NHTSA ID Number: 11034448
Manufacturer Communication Number: SA-042-26
TSB/Document Date: 2026-07-03
Summary
This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION Mazda
Connect Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out
•
•
•
•
2025 - Current Mazda3
2025 - Current CX-30
2025 - Current CX-5
2025 - Current CX-50
2026 - Current CX-70
2025 - Current CX-90
2025 - Current MX-5
NOTE:
• MCVV FREETRIAL Subscription End Date is currently showing incorrect
information, 3 years instead of 1 year, for the vehicles listed above. MCVV will
be corrected soon to show the correct 1 year Subscription End Date. This
Service Alert will be revised after MCVV correction has been completed.
• Customer communications do provide 1-year free trial period information.
Opening the TCU Communication Line
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1. Select “hamburger menu” on top right of screen.
2. From the MYMAZDA dropdown, select My Vehicles.
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3. Select “menu” on top right of screen.
4. Select "Add Vehicle".
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5. Select "SCAN VIN".
6. Select "SCAN".
NOTE: You can also manually enter the VIN if preffered. Select "ENTER VIN".
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7. Select "NEXT".
8. Select "VALIDATE".
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9. Select "NEXT".
10. Enter Vehicle Name and select local dealer, then select "SUBMIT".
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11. Select "ENROLL".
12a. If the communication line is closed, this message will appear advising the
customer to wait for the communication line to re-open.
Authorization Code (OTP) is processing. This may take up to 12 hours to
complete.
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When the communication line re-opens, this message will appear:
"Connectivity is Complete"
Subscription Required
12b.
NOTE 1: If the Connected Vehicle Services free trial period has ended, there will
be a pop-up notification, "Subscription Required", requesting the customer to
sign up for a paid subscription plan.
This pop-up notification will not disappear until customer has paid for
subscription plan through the Mazda Connected Services Owner Portal.
Once customer has purchased a subscription plan, it is recommended to close
the app & re-login back into MyMazda app to refresh the connected services
status.
Once system recognizes customer’s subscription status (this could take up to 12
hours), the “subscription required” pop-up will disappear.
NOTE 2: If the customer is having difficulty with the Mazda Connected Services
Owner Portal, refer the customer to CEC at (800) 222-5500.
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12. Select "START".
13. Agree to the Terms & Conditions, then select "AGREE".
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14. You will see a message stating "Activation Process in Progress", Select
"CLOSE".
15. You will receive a message saying "Connectivity is Complete"; however, it is
actually not complete. OK to close this window. Go to next step.
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16. Turn the ignition OFF for 10 minutes or longer.
17. Turn the ignition ON.
18. Check the Connected Vehicle reception strength icon:
• Reception strength icon shows normal
strength. TCU is now active. Proceed to
Enrollment.
• Reception strength icon shows "X". TCU
activation is still processing. Repeat steps 16
-18.
NOTE:
• This step may need to be repeated a few
times until normal strength is shown.
• If steps 16-18 was repeated several times with
no change, disconnect 12V battery for 5-10
minutes, then recheck reception strength icon.
Remote Engine Start Will Not Function under the following conditions:
WARNING: Safe usage is the customer's responsibility, such as making sure the vehicle is started in a well-ventilated
area.
Item
Condition
1
Remote Engine Start function is not available on EV and PHEV (inline 4) models (see SA-038/23)
2
3
Automatic transmission shift position except "P"
4
Vehicles equipped with manual transmission
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5
Vehicle speed above 3 mi/h (5 km/h)
6
Brake pedal switch malfunction
7
Engine has been running by remote engine start function
8
Engine started by remote engine start more than 2 consecutive times while the vehicle is not driven
NOTE: The vehicle must be driven 1-mile or 24-hours must pass from the last successful Remote
Engine Start for the use count to reset.
2021 Mazda3, 2021 CX-30, CX-50, MX-30: Vehicle's electrical control area network (CAN) is in
"Sleep Mode"
9
or
10
A registered key is detected in the vehicle
11
Brake pedal switch detects brake application
Low fuel warning
12
13
Engine starts, then turns OFF due to abnormal high engine rpm detected. (Engine rotation over
3000 rpm continued for more than 0.2 [s])
14
No engine rpm detected after sending engine start request (Engine rotation 0 rpm continued for
more than 0.2 [s])
15
When the CAN data signal for engine shut off is present (e.g.: door ajar signal)
16
After 10 second maximum cranking time
17
Burglar alarm status is "Alarm" and "Alarm stand by" - CAUTION - DO NOT enable (see TheftDeterrent System section in SA-012/20)
18
Room fuse blown/missing
Connected Services Disabled
19
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Connected Vehicle Maintenance Mode enabled (Restricted Transmitting Mode in MDARS)
20
21
Vehicle is parked (stored) for approximately 1 week or longer or in deep sleep mode (Drive the
vehicle for a few miles to recover)
DTC stored
22
23
Remote engine start aftermarket accessory installed
Mazda Remote Engine Start (BCKA-V7-620) accessory installed (No MyMazda app remote engine
start function)
24
Mazda Remote Engine Start (RES) Removal
a. Remove the Mazda Remote Engine Start (RES) accessory module.
b. Deactivate and activate Advanced Key(s). Refer to MGSS IMMOBILIZER SYSTEM-RELATED
PARTS PROGRAMMING [(US)].
25
First remote control attempt fails, second attempt works fine (Go to TSB 16-002/20)
26
CSP04 Status Open
Remote Engine Start Function Will turn engine OFF under the following conditions
Item
Condition
1
Vehicle door(s) opened
2
Vehicle trunk opened
3
Vehicle hood opened
4
Ignition switch push button "ON" detected
5
Remote engine STOP request
6
Brake pedal switch detects brake application
7
DTC stored
8
Engine will stop running automatically after 15 minutes for safety, security and emissions
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TCU Communication Line Status
NOTE:
• Customer/Dealer can activate CV services anytime via MyMazda app (there just might be a slight delay in
making the backend connection since it was temporarily deactivated).
• When TCU is in Deactivation Mode, infotainment Over-the-Air (OTA) Connectivity Master Unit (CMU)
software update is not possible (disabled).
• Prior to Retail Date, the TCU is active.
TCU Communication Line Status Check:
Reception Icon Shows normal strength
Communication
Line is Open
Infotainment
Center
Communication
Display
Line is Closed
Reception Icon Shows "X"
• No CV
Contract
• One Time
Passcode
(OTP) is
processing
Mazda
Connected
Vehicle
Viewer
(MCVV)
1. Go to Mazda
Connected
Vehicle Viewer
(MCVV).
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2. Select "Vehicle
Communication
Line Status
Reference".
3. Enter VIN, then
select "Search".
Communication Line is Closed
Vehicle Status
Reference
Enter VIN and
then select
"Search".
Communication Line is Open and CV Contract is active
TCU in Deactivation Mode (Status -> Closed)
Vehicle
Communication
Line Status
Reference
Enter VIN and
then select
"Search".
One Time Passcode (OTP) is processing
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TCU Active (Status -> Opened)
Customer Opt-Out
Some customers may request to stop data communication from their vehicle. Use this procedure to manually deactivate
the TCU.
CAUTION: If customer has an active In-Car WiFi contract, the customer must contact the carrier and cancel In-Car WiFi
service.
1. Check Connected vehicle
reception strength icon.
Infotainment Center displays “X” - No action needed.
Inform the customer that TCU is already deactivated. Data
communication is not being transmitted from the vehicle.
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Infotainment Center displays normal reception - go to next step.
Is the customer currently
2. enrolled into Connected
Vehicle services?
Yes - MCVV shows customer enrollment - go to step 4.
No - MCVV shows no customer enrollment - go to next step 3.
Go to:
Enroll into Connected Vehicle
services.
3. NOTE: This step can be
performed by dealer or
customer.
1. Installing the MyMazda APP
2. Registering Your User Information
3. Registering Vehicle Information
4. Registering Connected Service
• After enrollment, go to step 4.
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4. After enrollment, using the
MyMazda App, delete VIN.
CAUTION: If customer has an
active In-Car WiFi contract,
the customer must contact the
carrier and cancel In-Car WiFi
service.
a. From the main screen, select menu.
b. From the MYMAZDA drop down, select My Vehicles.
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c. Select Edit Vehicle.
d. Select Delete Vehicle.
5. Turn the ignition OFF and wait 5-10 minutes.
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Turn the ignition on and
Inform the customer that TCU is deactivated. Data communication is
confirm that the connected
not being transmitted from the vehicle.
6. vehicle
NOTE: The following functions have been disabled:
reception strength icon shows
“X”.
• Connected Vehicle Services (Remote Functions, Find My
Car....etc)
• In-car WiFi
• Recall Notifications
• Over the Air (OTA) software updates*
• Alexa*
• Hybrid Navigation*
*Some Models
Educational Videos
Overview
Using MyMazda App
In-car Wi-Fi hotspot
MyMazda remote
Notifications
Saftey features
Resources
Customer Connected Vehicle Online Enrollment Information
1. Installing the MyMazda APP
2. Registering Your User Information
3. Registering Vehicle Information
4. Registering Connected Service
MAZDA CONNECTED SERVICES
SA-023/25 - CONNECTED VEHICLE SYMPTOM TROUBLESHOOTING
SA-009/25 - MYMAZDA APP CONNECTED VEHICLE ERROR CODE DESCRIPTION AND RECOVERY
INFORMATION
Dealer Connected Vehicle Questionnaire
Connected Services Owner's Manual
MAZDA CONNECT and MAZDA CONNECTED SERVICES USER GUIDE
MAZDA CONNECTED VEHICLE VIEWER (MCVV) USER GUIDE
MAZDA CONNECT ESSENTIALS (30076WBT)
MAZDA CONNECT & CONNECTED SERVICES FOCAL POINT (30093FOC)
MAZDA CONNECTED SERVICES SMART CARDS
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MAZDA CONNECTED SERVICES: CUSTOMER OUTREACH
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- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
- Formulated for engines with 75,000 miles or more, Valvoline...
- Delivers 20% better wear protection and 15% better sludge...
- Extra detergents safeguard against friction, corrosion and...
- Advanced friction-fighting additives help maximize...
- Provides performance benefits for high mileage, new and...
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TSB/Document ID: SA-042-26
Replacement Service Bulletin Number:
MFR Communication Date: 2026-07-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem: Mazda Connect
Previous TSB | Next TSB |
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