(CC_a027)
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1. Contactor not working
2. Self-test of internal ground fault monitoring circuit failed
3. Thermal sensor disconnected
4. Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1. Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2. If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds, and turn the circuit breaker ON
again. Then try reconnecting the Wall Connector to the vehicle.
3. If the issue persists, have an electrician make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4. Once your electrician has completed all work and restored power to the Wall Connector, try charging again by
reconnecting the Wall Connector to the vehicle.
5. If the issue persists, the Wall Connector requires service.
(CC_a028)
Unable to charge - Incorrect switch setting
Wall Connector rotary switch must be adjusted
What this alert means:
Incorrect rotary switch setting.
What to do:
Have your electrician adjust the Wall Connector’s internal rotary switch to a valid operating current setting. They should first
make sure there is no power to the Wall Connector. The correlation between switch setting and current should be printed on
the inside of the Wall Connector. Your electrician should also refer to the Set the Operating Current section in the Wall
Connector Installation Manual.
If the Wall Connector is set up for load sharing (circuit breaker sharing) and paired with other Wall Connectors, the rotary
switch of the primary unit must be set to an operating current setting that allows each paired Wall Connector to receive at
least 6A of charge current.
Example: Three Wall Connectors are paired for load sharing. The primary unit needs to be set to a current of at least 3 * 6A =
18A or greater.
(CC_a029)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:

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Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
1. If the issue persists, turn OFF the circuit breaker servicing the Wall Connector, wait 10 seconds, turn the circuit breaker ON
again, then try reconnecting the Wall Connector to the vehicle.
2. If the issue persists and other charging equipment is available, plug the vehicle into another Wall Connector or a Mobile
Connector to determine if the vehicle is able to communicate with other charging equipment.
3. If the issue persists, service is required.
(CC_a030)
Unable to charge - Primary / paired unit mismatch
Wall Connector current ratings must match
What this alert means:
Load sharing (circuit breaker sharing) network: The paired Wall Connectors have different maximum current capabilities.
What to do:
Only Wall Connectors with the same maximum current capabilities can be paired in a load sharing (circuit breaker sharing)
network. Have your electrician inspect the type labels on the Wall Connectors and make sure the current capabilities match. It
is further recommended that your electrician only pair Wall Connectors with the same part number, as an easy way to make
sure paired units are compatible.
(CC_a041)
Charge rate reduced - Wall connection hot
Outlet or Wall Connector wiring must be checked
High temperature detected by Wall Connector alerts indicate the building connection to the Wall Connector is getting too
warm, so charging has been slowed to protect the wiring and Wall Connector.
This is not typically an issue with your vehicle or your Wall Connector, but rather an issue with the building wiring. This may be
caused by a loose building wiring connection to the Wall Connector and can be fixed quickly by an electrician.
To regain normal charge speed, contact an electrician to inspect the building wiring connection to the Wall Connector. They
should make sure that all wires are properly connected and torqued according to the installation guide for the Wall Connector.
(CC_a043)
Wall Connector configuration must be completed
Refer to Installation Guide to enable charging
What this alert means:
Wall Connector configuration is incomplete.
What to do:
The Wall Connector needs to be commissioned to appropriately configure the circuit breaker size and protective earth
connection type.
For more information, refer to Commissioning Procedure in the Wall Connector Installation Manual. If the issue persists,
contact an electrician to inspect the building wiring connection to the Wall Connector. They should make sure the power
output and grounding connections are properly configured according to the installation guide for the Wall Connector.
(CP_a004)
Charging equipment not recognized
Try again or try different equipment
The charge port is unable to detect whether a charge cable is inserted or the type of charge cable connected.
If this alert appears while a charge cable is connected, it should be determined whether the issue is caused by the charging
equipment or the vehicle. Try charging the vehicle using different external charging equipment (charge cable, charging
station, charging stall, etc.).

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• If the vehicle begins charging, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
If this alert appears while a charge cable is not connected or if the issue is suspected to be with the vehicle, inspect the charge
port inlet and the charge cable connector for any obstructions (use a flashlight as necessary). Debris, moisture, and/or foreign
objects present in the charge port inlet or the charge cable connector can prevent the charge port from properly detecting
charge cables.
It is recommended that any debris / foreign objects be removed and any moisture be allowed to dry. Afterward, try re-inserting
the cable into the charge port. Charging should now be possible.
• Try charging with multiple, different types of charging equipment.
• Make sure any charge port inlet obstruction has been removed.
(CP_a010)
Charging equipment communication error
Try again or try different equipment
Your vehicle is unable to charge because it cannot communicate effectively with the external charging equipment. It cannot
sense a valid control pilot signal coming from the charging equipment.
First, confirm the lack of effective communication is caused by the external charging equipment rather than an issue with your
vehicle. This is usually the case.
Try charging the vehicle using different external charging equipment (including charge cable, charging station, or charging
stall).
• If the vehicle begins charging, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
If the issue is suspected to be with the vehicle, inspect the charge port inlet and the charge cable connector for any
obstructions (use a flashlight as necessary). Debris, moisture, and/or foreign objects present in the charge port inlet or the
charge cable connector can prevent the charge port from properly communicating with the charging equipment.
It is recommended that any debris / foreign objects be removed and any moisture be allowed to dry. Afterward, try re-inserting
the cable into the charge port. Charging should now be possible.
As this alert is usually specific to external charging equipment and power sources, and it does not typically indicate an issue
with your vehicle that can be resolved by scheduling service, it is recommended that you:
• Try charging with multiple, different types of charging equipment.
• Make sure any charge port inlet obstruction has been removed.
(CP_a043)
Charge port door sensor fault
Charge port may not operate as expected
One of the charge port door sensors is not functioning normally. When this occurs, the charge port may be unable to
accurately sense the charge port door position and the charge port may not operate as expected.
• The charge port latch may intermittently remain engaged when the charge port door is opened.
• The charge port light may illuminate only intermittently when the charge port door is opened.
If you encounter these or similar behaviors while the alert is present, try closing the charge port door and then opening it again
to restore normal function.
For more information, see Opening the Charge Port on page 417.

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(CP_a046)
Charging equipment communication lost
Check power source and charging equipment
Charging stopped because communication between the vehicle and the external charging equipment was interrupted.
Confirm whether the external charging equipment is powered by looking for any status lights, displays, or other indicators on
the equipment.
If the equipment is not powered, try to restore the external charging equipment’s power source.
• If attempting to charge at a public station and power is unable to be restored, contact the station operator.
• If attempting to charge at a private station (for example: charging at home) and power is unable to be restored, contact an
electrician.
If the equipment is powered, try charging the vehicle using different external charging equipment.
• If the vehicle begins charging, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
• Make sure the external charging equipment is powered.
• Try charging with multiple, different types of charging equipment.
(CP_a051)
Charge port may not open when pressed
Use another method to open the charge port
One of the charge port door sensors is not communicating properly. This may cause the charge port to not recognize the
request to open when the charge port door is pressed.
You can still use all other usual methods to open the charge port door:
• Request that the charge port door open using your vehicle touchscreen.
• Request that the charge port door open using your Tesla Mobile App.
• With your vehicle unlocked, press the charge handle button on any Tesla charge cable, including a Wall Connector, Mobile
Connector, or Supercharger.
• Hold and press the trunk button on your key fob.
For more information, see Opening the Charge Port on page 417.
(CP_a053)
Unable to charge - Charge station not powered
Check power source or try a different station
Charging cannot begin because the charging equipment is not ready. A charge handle is detected, but the charging station is
not communicating with the vehicle. This issue could occur because:
• The charging station is not powered.
• The control pilot signal between the charging station and the vehicle is interrupted.
Try charging the vehicle with different charging equipment or at a different charging station.
If the vehicle starts to charge, the issue was likely with the equipment.
If using a Mobile Connector or Wall Connector, first check the status lights on the front. If no status lights are visible, check
the power source and contact an electrician to inspect the building wiring connection to the wall outlet or the Wall Connector
to confirm that all wires are properly connected and torqued.

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If using other external charging equipment, consult the product's owner's manual to learn how to confirm that the station is
powered. Contact an electrician to inspect the building wiring and charging equipment as necessary.
If the vehicle still does not charge, the issue may be with the vehicle.
• Try charging with different charge equipment / at different stations.
(CP_a054)
Charge port latch not engaged
Fully insert charge cable or check for obstruction
The charge port latch is unable to latch the charge cable in the charge port inlet. If the latch is not engaged, AC charging (for
example, charging with a Mobile Connector or Wall Connector) will be limited to 16A and DC Fast Charging / Supercharging
will be unavailable.
The charge port light will pulse amber if this alert appears during AC charging and will be solid amber if this alert appears
when attempting to DC Fast Charge / Supercharge.
Try re-inserting the charge cable fully into the charge port inlet.
If your vehicle begins charging and the charge port light pulses green, the charge cable may not have been fully inserted
before. The latch may not have engaged during previous attempts because the cable was not fully inserted. AC charging
should no longer be limited, and DC Fast Charging / Supercharging should be available.
If charging is still limited or the vehicle will not charge at all, inspect the charge port inlet and the charge cable connector for
any obstructions (use a flashlight as needed). Debris and/or foreign objects in the charge port inlet or the charge cable
connector can prevent you from fully inserting the charge cable. If the cable is not fully inserted, the charge port latch will not
engage.
It is recommended that any debris / foreign objects be removed. Afterward, try re-inserting the cable into the charge port
inlet. AC charging should no longer be limited, and DC Fast Charging / Supercharging should be available.
• Make sure the charge cable is fully inserted during charging.
• Make sure any charge port inlet obstruction has been removed.
(CP_a055)
Charging equipment communication lost
Check power source and charging equipment
Charging stopped because communication between the vehicle and the external charging equipment was interrupted.
Confirm whether the external charging equipment is powered by looking for any status lights, displays, or other indicators on
the equipment.
If the equipment is not powered, try to restore the external charging equipment’s power source.
• If attempting to charge at a public station and power is unable to be restored, contact the station operator.
• If attempting to charge at a private station (for example: charging at home) and power is unable to be restored, contact an
electrician.
If the equipment is powered, try charging the vehicle using different external charging equipment.
• If the vehicle begins charging, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
• Make sure the external charging equipment is powered.
• Try charging with multiple, different types of charging equipment.

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(CP_a056)
Charging stopped - Charge cable disconnected
Close charge port - Press brake pedal and retry
Charging has stopped because your vehicle has detected that the connection between the charge port and charge cable has
been unexpectedly interrupted.
Before disconnecting a charge cable, make sure you first stop charging.
With some external charging equipment, charging may be stopped by pressing the button on the charge handle.
You can also stop charging from your vehicle touchscreen, your Tesla Mobile App, or the charging station.
For more information, see Stopping Charging on page 423.
(CP_a057)
Charging equipment reports error
Check equipment for error code or message
Charging was interrupted because the external charging equipment has reported a fault that prevents the vehicle from
charging.
Inspect the external charging equipment and look for status lights, displays, or other status indicators on the equipment.
Consult the equipment owner’s manual for further troubleshooting instructions.
Try charging the vehicle with different charging equipment or at a different charging station.
• If the vehicle starts to charge, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
• Try charging with different charge equipment / at different stations.
(CP_a058)
Unable to AC charge - Unplug and retry
Or try DC Fast Charging / Supercharging
Your vehicle is unable to AC charge because it has detected one of the following conditions and has tried to charge too many
times without success:
• The charge port is unable to detect whether a charge cable is inserted or detect the type of charge cable connected.
• Your vehicle is unable to sense a valid pilot control signal coming from the charging station, so it cannot communicate
effectively with the external charging equipment.
• Communication between your vehicle and the external charging equipment has been interrupted.
• The external charging equipment has reported an error that prevents your vehicle from charging.
When this alert is present, there will always be at least one other alert present that identifies a more specific condition.
For more information and troubleshooting suggestions, it is recommended that you check in your vehicle touchscreen for
other recent alerts that involve charging.
(CP_a066)
Charging equipment not ready
See equipment instructions to start charging
Charging cannot begin because the charging station is communicating to your vehicle that either the external charging
equipment is not ready or charging is not authorized. The control pilot signal that communicates between the charging station
and your vehicle indicates that your vehicle is not allowed to start charging. This could occur because:
• The charging station is actively delaying charging. For example, this can happen because the station has a scheduled
charging feature activated.

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• The charging station requires further activation before the charge session can begin. Some additional authentication may
be needed before the station will start charging your vehicle.
◦ For example: a charging card, a mobile app, or a credit card may be required.
Check the charging station for any instructions that explain the steps necessary to enable charging. For example, look for a
touchscreen terminal, LED status indicators, printed instructions, or a payment interface that might provide guidance. If you
cannot enable charging on the current charging station, try charging the vehicle with different charging equipment or at a
different charging station.
• If the vehicle starts to charge, the issue was likely with the equipment.
• If the vehicle still does not charge, the issue may be with the vehicle.
As this alert is usually specific to external charging equipment and power sources, and it does not typically indicate an issue
with your vehicle that can be resolved by scheduling service, it is recommended that you:
• Try charging with different charge equipment / at different stations.
(CP_a078)
Cable blocked - Charge port latch may be frozen
Try using Defrost Car button in Mobile App
The charge port latch cannot unlatch the charge cable, and cold ambient temperature is detected.
To remove any strain on the cable, re-insert the charge cable fully into the charge port inlet. Try again to unlatch the charge
cable.
If the charge cable still cannot be removed, the charge port latch may be frozen.
Press the Defrost Car button in your Tesla Mobile App to defrost your vehicle for approximately 30 - 45 minutes. This should
help thaw any ice on the charge port latch so the charge cable can be removed.
NOTE: Be sure to use Defrost Car in your Mobile App to defrost your vehicle. Adjusting the climate control settings in your
vehicle's touchscreen will not be as effective.
If the charge cable still cannot be removed, try the manual release cable in your vehicle’s trunk.
1. Make sure your vehicle is not actively charging.
◦ In your vehicle touchscreen, access the charging screen.
◦ If necessary, press Stop Charging.
2. Open the rear trunk.
3. Pull the charge port release cable downwards to unlatch the charge cable.
◦ Note: The release cable is located on the left hand side of the rear trunk. It may be recessed within a small opening of
the trunk interior trim.
4. Pull the charge cable from the charge port.
For more information on using the manual release cable, see Manually Releasing Charge Cable on page 426.
(CP_a079)
Charge rate reduced - Charge port may be frozen
Try using Defrost Car button in Mobile App
The charge port latch is unable to secure the charge cable in the charge port inlet, and cold ambient temperature is detected.
If the latch is not engaged, AC charging (for example, charging with a Mobile Connector or Wall Connector) will be limited to
16A and DC Fast Charging / Supercharging will be unavailable.
The charge port light will pulse amber if this alert appears during AC charging, and it will be solid amber if this alert appears
when attempting to DC Fast Charge / Supercharge.
Try re-inserting the charge cable fully into the charge port inlet.

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If your vehicle begins charging and the charge port light pulses green, the charge cable may not have been fully inserted
before. The latch may not have engaged during previous attempts because the cable was not fully inserted. AC charging
should no longer be limited, and DC Fast Charging / Supercharging should be available.
If charging is still limited or the vehicle will not charge at all, inspect the charge port inlet and the charge cable connector for
any obstructions (use a flashlight as needed). Debris and/or foreign objects in the charge port inlet or the charge cable
connector can prevent you from fully inserting the charge cable. If the cable is not fully inserted, the charge port latch will not
engage.
It is recommended that any debris / foreign objects be removed. Afterward, try re-inserting the cable into the charge port
inlet. AC charging should no longer be limited, and DC Fast Charging / Supercharging should be available.
If you have checked for and cleared any debris or foreign objects, but charging is still limited or your vehicle will not charge at
all, the charge port latch may be frozen. Press the Defrost Car button in your Tesla Mobile App to defrost your vehicle for
approximately 30 - 45 minutes. This should help thaw any ice on the charge port latch so the charge cable can be properly
inserted.
NOTE: Be sure to use Defrost Car in your Mobile App to defrost your vehicle. Adjusting the climate control settings in your
vehicle's touchscreen will not be as effective.
As this alert usually indicates a temporary condition due to cold ambient temperature or a charge port inlet obstruction, and it
does not typically indicate an issue with your vehicle that can be resolved by scheduling service, it is recommended that you:
• Make sure the charge cable is fully inserted during charging.
• Make sure any charge port inlet obstruction has been removed.
• Press the Defrost Car button in your Tesla Mobile App to defrost your vehicle for approximately 30 - 45 minutes before
trying to charge again.
If the alert remains present, limited AC charging should still be available.
(CP_a101)
Charge rate reduced - Wall connection hot
Outlet or Wall Connector wiring must be checked
High temperature detected by Wall Connector alerts indicate the building connection to the Wall Connector is getting too
warm, so charging has been slowed to protect the wiring and Wall Connector.
This is not typically an issue with your vehicle or your Wall Connector, but rather an issue with the building wiring. This may be
caused by a loose building wiring connection to the Wall Connector and can be fixed quickly by an electrician.
To regain normal charge speed, contact an electrician to inspect the building wiring connection to the Wall Connector. They
should make sure that all wires are properly connected and torqued according to the installation guide for the Wall Connector.
(CP_a102)
Unable to charge - Wall connection too hot
Outlet or Wall Connector wiring must be checked
High temperature detected by Wall Connector alerts indicate the building connection to the Wall Connector is getting too
warm, so charging has stopped to protect the wiring and Wall Connector.
This is not typically an issue with your vehicle or your Wall Connector, but rather an issue with the building wiring. This may be
caused by a loose building wiring connection to the Wall Connector and can be fixed quickly by an electrician.
To regain normal charge operation, contact an electrician to inspect the building wiring connection to the Wall Connector.
They should make sure that all wires are properly connected and torqued according to the installation guide for the Wall
Connector.
(CP_a143)
Charging adapter has electric arc flash hazard
Use different charging equipment
Charging is unavailable because your vehicle has detected an electric arc flash hazard in the third-party charging adapter used
to connect a Combined Charging System (CCS) charge handle to your vehicle’s charge port.

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An electric arc flash can occur if you attempt to unplug while actively charging with the third-party charging adapter, and an
electric arc flash can cause serious bodily injury and/or property damage.
Follow the steps below to mitigate this risk:
1. Make sure charging is completely stopped.
a. Use your vehicle touchscreen to confirm charging has stopped, or to stop charging if necessary.
b. Use the charging station display and controls to confirm charging has stopped, or to end any active charging session.
2. Make sure no flashing green or blue light (LED) is visible on your vehicle’s charge port.
3. Unplug the charging adapter from your vehicle’s charge port.
4. Confirm again that the charging station indicates no active charging session.
5. Unplug the charging adapter from the charge handle.
Use different charging equipment to charge your vehicle.
(DI_a175)
Cruise control unavailable
Cruise Control, including Traffic-Aware Cruise Control, is currently unavailable. Take control and drive your vehicle manually.
Continue to your destination. Your vehicle is OK to drive.
Cruise Control might become unavailable due to many factors, including:
• Driver input or behavior:
◦ Unbuckling the driver’s seat belt
◦ Not closing the doors, front trunk, or trunk
◦ Canceling a Cruise Control request
◦ Trying to activate Cruise Control below minimum speed of 18mph (30 km/h)
• Environmental / external conditions
• Vehicle System Restraints:
◦ May include camera or radar lack of visibility
• Valet Mode is active:
◦ For more information, see Valet Mode on page 183.
When any condition preventing Cruise Control activation is no longer present, Cruise Control should be available.
If this alert persists throughout subsequent drives, schedule service at your convenience. Your vehicle is OK to drive in the
meantime.
For more information, see Traffic-Aware Cruise Control on page 299.
(DI_a184)
Autopark canceled
Take control
Autopark has been canceled. You need to park or finish parking your vehicle manually.
Once the parking maneuver is complete, apply the brakes and shift into Park. Your vehicle will otherwise remain free-rolling.
Autopark can be canceled due to many factors, including the following:
• Driver input or behavior
◦ Moving the steering wheelsteering yoke
◦ Pressing the accelerator pedal

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◦ Pressing the brake pedal
◦ Opening a door and/or exiting the vehicle
◦ Pressing the Cancel button on the touchscreen
• Environmental / external conditions
◦ Steep slope / grade
◦ Weather conditions affecting visibility / sensor function
◦ Curb cannot be detected
• A trailer is attached to the vehicle
• Vehicle system constraints
Autopark should be available again during your next drive.
If this alert persists throughout subsequent drives, schedule service at your earliest convenience. Your vehicle is OK to drive
in the meantime.
For more information, see To Cancel Parking on page 329 and Limitations on page 329.
(DI_a185)
Autopark aborted
Autopark has aborted and the Electronic Parking Brake has been applied. You need to park or finish parking your vehicle
manually.
Once the parking maneuver is complete, apply the brakes and shift into Park. Your vehicle will otherwise remain free-rolling.
Autopark can abort due to many factors, including the following:
• Driver input or behavior
◦ Using the gear stalk
◦ Moving the steering wheelsteering yoke
◦ Pressing the accelerator pedal
◦ Pressing the brake pedal
◦ Opening a door and/or exiting the vehicle
◦ Pressing the Cancel button on the touchscreen
• Environmental / external conditions
◦ Steep slope / grade
◦ Weather conditions affecting visibility / sensor function
◦ Curb cannot be detected
• A trailer is attached to the vehicle
• Vehicle system constraints
Autopark should be available again during your next drive.
If this alert persists throughout subsequent drives, contact Tesla Service at your earliest convenience. Your vehicle is OK to
drive in the meantime.
For more information, see To Cancel Parking on page 329 and Limitations on page 329.
(DI_a201)
Regenerative braking temporarily reduced
Regen will increase as vehicle is driven
Regenerative braking performance has been temporarily reduced to below 65% of its full capacity. The exact reduction is
indicated by the dashed lines on the power meter.
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While this alert is present, the deceleration rate of the vehicle due to regenerative braking will be reduced and more brake
pedal application will be required to slow the vehicle (similar to what is needed in a gas-powered, non-electric, vehicle).
This alert is expected under the following conditions:
• Battery is near full charge:
◦ Regenerative braking is reduced when the battery is at 95% charge or higher.
• Battery is cold:
◦ The battery may not be warm enough for full regenerative braking performance (possibly at the beginning of a drive).
◦ In extremely cold climates, this alert may remain present indefinitely and regenerative braking may remain reduced, as
driving the vehicle may not warm the battery enough to fully restore performance.
Typically, driving will clear this alert because it will reduce the battery charge level below 95% and sufficiently warm the
battery.
This is a completely normal part of vehicle operation and should not cause alarm. The notice on the screen is for your
information only.
For more information on regenerative braking, see the Regenerative Braking section in the Owner’s Manual. Regenerative
Braking on page 233.
(DI_a245)
Vehicle Hold feature unavailable
Keep brake pedal pressed while stopped
Vehicle Hold is currently unavailable due to system constraints. When stopping, use the brake pedal to bring your vehicle to a
complete stop and keep your vehicle stationary.
Continue to your destination. Your vehicle is OK to drive.
If Vehicle Hold is not available during your next drive, contact Tesla Service. Your vehicle is OK to drive in the meantime.
For more information, see Vehicle Hold on page 252.
(ESP_a118)
Assist for low brake performance activated
To stop, keep brake pedal firmly pressed
Hydraulic Fade Compensation is active. This brake assist function activates temporarily to make sure you have full braking
capability in conditions where reduced braking performance is detected by your vehicle.
Continue to press the brake pedal as you normally would, and do not "pump" (repeatedly press and release) the pedal as this
will interrupt the function.
This alert will clear when your vehicle comes to a stop or you are no longer pressing the brake pedal. It may still be displayed
for up to 5 seconds afterward.
When this assist function activates, you may feel the brake pedal pull away from your foot and notice a strong increase in brake
pressure. You may also hear a pumping sound coming from the brake hydraulic unit at the front of the vehicle. This will usually
last for a few seconds, depending on road surface and vehicle speed. This is completely normal and does not indicate any
issue with your vehicle.
Reduced braking performance is usually temporary, and can occur for a number of reasons including high brake temperatures
after heavy brake use, or driving in extremely cold or wet conditions. It can also indicate that your brake pads or rotors have
worn to the point that normal replacement is needed.
If you continue to experience reduced braking performance which does not improve over time, please contact Tesla service at
your convenience for a brake inspection.
For more information, see Hydraulic Fade Compensation on page 232.

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(PCS_a016)
Cannot charge - Poor grid power quality possible
Retry / Try other charge location or Supercharging
Charging has stopped due to a condition that prevents your vehicle from charging with AC power. DC fast charging /
Supercharging should still function as expected.
This condition could occur due to power supply disturbances caused by the external charging equipment or by the electrical
power grid. In some cases, this condition can even result from turning on nearby electric devices that draw a lot of power.
If these possible causes can be ruled out, then a condition with your vehicle itself may also be affecting AC charging.
This alert is often accompanied by other alerts that can help you identify and troubleshoot the condition. Start by investigating
any other displayed alerts that relate to charging.
Further troubleshooting tips based on equipment type:
• If using a Mobile Connector, try charging your vehicle with a different wall outlet.
◦ If your vehicle starts to charge and continues to charge as expected, the issue was likely with the original wall outlet. It
is recommended that you contact an electrician to inspect the building wiring connection to that outlet.
◦ If your vehicle still does not start to charge, or does not continue to charge as expected, the issue may be with the
Mobile Connector or the electrical grid.
• If using a Wall Connector, try charging your vehicle with different charging equipment like a Mobile Connector powered by
a separate wall outlet.
◦ If your vehicle starts to charge and continues to charge as expected, the issue was likely with the Wall Connector.
Contact an electrician to inspect the building wiring connection to the Wall Connector. They should make sure that all
wires are properly connected and torqued according to the installation guide for the Wall Connector.
As this alert is usually specific to external charging equipment and power sources, and it does not typically indicate an issue
with your vehicle that can be resolved by scheduling service, it is recommended that you:
• Try charging with different wall outlets.
• Try charging with multiple, different types of charging equipment at different locations.
(PCS_a017)
Charging stopped - Power lost while charging
Check power source and charging equipment
Power has been lost during charging. This could result from the charging equipment losing power from the source (for
example, a wall outlet) or from an issue with the charging equipment.
This alert is often accompanied by other alerts that can help you identify and troubleshoot the issue. Start by investigating any
other displayed alerts that relate to charging issues.
Alternatively, you can check Mobile Connector or Wall Connector status lights to confirm power to the device, and also refer
to the product owner’s manual for troubleshooting information based on blink codes. If using other (non-Tesla) external
charging equipment, check for a display or other user interface that provides troubleshooting help.
If there is clearly no power to the charging equipment, check the circuit breaker for the wall outlet / Wall Connector to make
sure it has not tripped.
Further troubleshooting tips based on equipment type:
• If using a Mobile Connector, try charging the vehicle with a different wall outlet.
◦ If the vehicle starts to charge, the issue was likely with the original wall outlet. It is recommended that you contact an
electrician to inspect the building wiring connection to that outlet.
◦ If the vehicle still does not charge, the issue may be with the Mobile Connector.
• If using a Wall Connector, try charging the vehicle with different charging equipment like a Mobile Connector powered by a
separate wall outlet.

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Owners Manual
◦ If the vehicle starts to charge, the issue was likely with the Wall Connector. Contact an electrician to inspect the
building wiring connection to the Wall Connector. They should make sure that all wires are properly connected and
torqued according to the installation guide for the Wall Connector.
• Try charging with different wall outlets.
• Try charging with different charging equipment.
(PCS_a019)
Charging slowed - Poor grid power quality possible
Unplug and retry / Try different charging location
Charging speed has been reduced due to a condition that affects your vehicle’s ability to charge with AC power. DC fast
charging / Supercharging should still function as expected.
This condition could occur due to power supply disturbances caused by the external charging equipment or by the electrical
power grid. In some cases, this condition can even result from turning on nearby electric devices that draw a lot of power.
If these possible causes can be ruled out, then a condition with your vehicle itself may also be affecting AC charging.
This alert is often accompanied by other alerts that can help you identify and troubleshoot the condition. Start by investigating
any other displayed alerts that relate to charging.
Further troubleshooting tips based on equipment type:
• If using a Mobile Connector, try charging your vehicle with a different wall outlet.
◦ If charging speed is no longer reduced, the issue was likely with the original wall outlet. It is recommended that you
contact an electrician to inspect the building wiring connection to that outlet.
◦ If charging speed is still reduced, the issue may be with the Mobile Connector or the electrical grid.
• If using a Wall Connector, try charging your vehicle with different charging equipment like a Mobile Connector powered by
a separate wall outlet.
◦ If charging speed is no longer reduced, the issue was likely with the Wall Connector. Contact an electrician to inspect
the building wiring connection to the Wall Connector. They should make sure that all wires are properly connected and
torqued according to the installation guide for the Wall Connector.