NHTSA ID Number: 11034444
Manufacturer Communication Number: SA-040-26
TSB/Document Date: 2026-07-03
Summary
This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-009/25 08/22/25 and 02/18/25 DESCRIPTION Some customers may experience a Connected Vehicle failure. The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs. Index System Outline • MYMAZDA App Connected Vehicle (CV) Error Codes • Vehicle Confirmation Instructions • Troubleshooting Instructions • Resources
Occurs when a remote
engine stop request is made when the vehicle is in one of the following
conditions;
• Remote engine start is not requested
• Remote engine start is requested, but the engine is stopped
Description
Main factors;
• The signal condition at the parking place is poor.
• Necessary information is not properly transmitted from the vehicle to the center.
MyMazda App
Message
A remote engine stop request cannot be executed unless the vehicle was started with a remote
engine start request. [400S04]
User sent Remote Engine Stop request when in either of following status
Cause
• Having no request history of Remote Engine Start
• Having a request of Remote Engine Start, but its engine was stopped then.
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Process Flow
• Check if remote engine start has been requested
• Check the vehicle and make sure the engine is started
• Turn on IG-on, check the reception strength icon at the bottom
right of the center display.
Confirmation/
Recovery
Customer
If the reception is poor, the function cannot be executed.
Dealer
Follow the Vehicle Confirmation Instructions.
400S05
Description
It occurs when the remote door unlock cannot be executed because the previous request is being
processed.
MyMazda App
Message
Remote operation is in progress. Please wait for a while and try again. [400S05]
Cause
Multiple execution of remote control.
Process Flow
Confirmation/
Recovery
Customer
• Wait for a response to the previous request, or wait about 5 minutes
before attempting the operation again.
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• Turn on IG-on, check the reception strength icon at the bottom right of
the center display.
If the reception is poor, the function cannot be executed.
• If the information file cannot be sent to the system center when IG-off,
the vehicle status may not be updated.
Dealer
Follow the Vehicle Confirmation Instructions.
400S06
Description
This occurs when location information cannot be obtained when logging in, performing a service that
obtains location information, such as displaying a map or Vehicle Finder.
Main factorsThe signal condition at the parking place is poor.
MyMazda App
Message
The location data is not available. [400S06]
Cause
The signal condition at the parking place is poor.
Occurs in the case of specific conditions of in-vehicle data.
Process Flow
Turn on IG-on, check the reception strength icon at the
bottom right of the center display.
Confirmation/
Recovery
Customer
If the reception is poor, the function cannot be executed.
Dealer
Follow the Vehicle Confirmation Instructions.
400S07
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Description
It occurs if code generation for authentication is locked temporally.
MyMazda App
Message
N/A
Cause
Passcode generation is temporarily locked.
Process Flow
Confirmation/
Recovery
Customer
Wait at least 60 minutes and try again.
Dealer
If the error continues to occur, there may be a problem with the system
center -> Go to " Troubleshooting Instructions".
400S08
Description
This occurs when the OTP expiration time (10 minutes) has expired.
*OTP = one time passcode
MyMazda App
Message
N/A
Process Flow
Confirmation/
Recovery
400S09
Description
MyMazda App
Message
Customer
Resend a new verification code.
Dealer
If the error continues to occur, there may be a problem with the system
center -> Go to " Troubleshooting Instructions".
This occurs when the one-time passwords entered does not match.
Please check the verification code and try again. [400S09]
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Process Flow
Confirmation/
Recovery
Customer
Review the input data and try again.
Wait about 5 minutes and try the operation again.
Dealer
If the error continues to occur, there may be a problem with the system
center -> Go to " Troubleshooting Instructions".
400S10
Description
This occurs when the input OTP has already been accepted.
OTP = one time passcode
MyMazda App
Message
N/A
Process Flow
Confirmation/
Recovery
Customer
Resend a new verification code
Dealer
If the error continues to occur, there may be a problem with the system
center -> Go to " Troubleshooting Instructions".
400S11
Occurs when a request is executed exceeding the limit for consecutive executions of remote control
engine start (2 times).
Main factors;
Description
• Vehicle location information and mileage information are not updating properly, and the
number of executions is not updated.
• Necessary information cannot be sent from the vehicle to the center
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Remote Engine Start can only be executed two consecutive times in a row. (400S11)
MyMazda App
Message
If Remote Engine Start is used, the engine will stop running automatically after 15 minutes for safety,
security and emissions.
Remote Engine Start can only be used 2 consecutive times while the vehicle is not driven.
After the vehicle has been driven, the use count is reset.
Cause
Exceeded the number of times the remote engine start.
Process Flow
Check whether the request operation has been performed more than 3
times.
Check whether the following conditions (required conditions for
execution) are met.
Confirmation/
Recovery
• The vehicle has stopped after driving for more than 100 meters.
• 24 hours have passed since the last execution
Customer
Turn on IG-on, check the reception strength icon at the bottom right of
the center display.
If the reception is poor, the function cannot be executed.
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If the information file cannot be sent to the center when IG-off, the
vehicle status may not be updated.
Dealer
Follow the Vehicle Confirmation Instructions.
400S12
Description
This occurs when a request is accepted again during the contract/cancellation process for a
connected service.
MyMazda App
Message
"The enrollment process may take a few minutes. Once it is completed, you will be notified in the
MyMazda app.
Thank you for your patience. [400S12]"
Cause
Enrollment request is being processed.
Process Flow
Wait a few hours (up to 24 hours) and after receiving a push notification that
OTP display is possible, execute the OTP request again.
Processing is only performed between 6:00 a.m. and 10:00 p.m. Eastern
time, so it may take more than 24 hours.
Turn on IG-on, check the reception strength icon at the bottom right of the
center display.
Customer
If the reception is poor, the function cannot be executed.
Confirmation/
Recovery
Dealer
Follow the Vehicle Confirmation Instructions.
What happens when you open the Communication Line Status screen on
MCVV and search for the target VIN;
→ "Status" = "Open Requested" or "Open Flag Setting Requested"
"Status Detail" = "Processing"
The service contract process is proceeding normally. Wait for the
push notification to proceed.
"Status" = "Close Requested"
"Status Detail" = "Processing"
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In this case, the cancellation process is in progress, so you will need
to wait several hours (up to 12 hours).
After that, check that "Status Detail" = "Close Completed" for the
target VIN on MCVV and perform the cancellation process again.
"Status" = "Open Requested"
"Status Detail" = "Request failed" or "Open failed"
In this case, the line opening request has failed → Go to "
Troubleshooting Instructions".
"Status" = "Open Requested"
"Status Detail" = "Request failed" or "Flag setting failed"
In this case, the request to start using the service has failed → Go to
" Troubleshooting Instructions".
"Status" = "Close Requested"
"Status Detail" = "Request failed" or "Close failed"
In this case, the line blockage request has failed → Go to "
Troubleshooting Instructions".
*Please note that if you perform TCU exchange when "Status" is in a state
other than "Opened" or "Closed", contract execution processing will not be
possible.
400S13
Description
This occurs when a contract (agreement to terms) request is accepted when a connected service
contract is already in place.
MyMazda App
Message
Your connected services enrollment is complete. If you still see the "ENROLL" button, please logout
of the app and login again. [400S13]
Cause
Enrollment processing has already been completed.
Process Flow
Confirmation/
Recovery
Customer
If the "ENROLL" button continues to be displayed, sign out and log in
again.
Dealer
If the error continues to occur, there may be a problem with the system
center. -> Go to " Troubleshooting Instructions".
400S14
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Description
This occurs when either the date of initial registration or the vehicle registration number cannot be
obtained.
Cause
Registration of vehicle information is incomplete.
Process Flow
Confirmation/
Recovery
Customer
Dealer
--It is suspected data registration problem at system center. -> Go to "
Troubleshooting Instructions".
400S15
Description
This occurs when the next contract cannot be processed because the cancellation process is in
progress.
MyMazda App We are processing your request and it may take up to 5 minutes. You will be notified within the app
Message
once it is complete. If you do not see a confirmation message, please contact the call center. [400S15]
Cause
Unsubscribe request is being processed.
Process Flow
Confirmation/
Recovery
Customer
Dealer
--Recovery work is required at the system center. -> Go to "
Troubleshooting Instructions".
400S16
Description
Occurs when remote control operation is performed while battery power consumption is exceeding
(power saving mode).
Main factors
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• 12V battery is weak or insufficiently charged
• The necessary information file cannot be sent from the vehicle to the system center.
MyMazda App
Message
Remote control request cannot be executed because the vehicle's battery is too low. Please start your
vehicle to charge the battery and try it again. [400S16]
Cause
Because of power saving mode.
12V battery discharged.
Process Flow
Run the engine for more than 5 minutes or start the EV system to
charge the 12V battery.Turn on IG-on, check the reception strength
icon at the bottom right of the center display.
Confirmation/
Recovery
Customer
If the reception is poor, the function cannot be executed.
Dealer
Follow the Vehicle Confirmation Instructions.
400S17
Description
This issue occurs when performing Add VIN on a vehicle that does not have a connected contract
(occurs only for destinations that do not have a function that supports vehicle identification).
MyMazda App
Message
N/A
Cause
Target vehicle is not eligible for CV service
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Process Flow
Confirmation/
Recovery
Customer
Confirm the status of connected service contract
Dealer
Confirm the status of connected service contract by MCVV
If service activated is confirmed, it is suspected that registered
information is incorrect. -> Go to " Troubleshooting Instructions
".
400S18
Description
Occurs when updating the geofence settings and the previous settings request is still in
progress.
MyMazda App
Message
Ignition On Setting / Guest Driver Alert is in progress. Please try again shortly. [400S18]
Cause
IG-ON notification settings/geofence settings are in progress.
Process Flow
Confirmation/
Recovery
Perform IG-on operation on the vehicle (complete the previous setting execution
process).
Turn on IG-on, check the reception strength icon at the bottom right of the center
display.
Customer
If the reception is poor, the function cannot be executed.
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TSB/Document ID: SA-040-26
Replacement Service Bulletin Number:
MFR Communication Date: 2026-06-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem: Connected Vehicle
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