The Importance of Backup Battery Replacement Reset in Vehicle Telematics Systems

The Importance of Backup Battery Replacement Reset

When it comes to vehicle telematics systems, a secondary battery known as the backup battery plays a crucial role in providing power to the system in case the main vehicle battery is disconnected or depleted. However, when the backup battery needs to be replaced, it’s essential to reset the telematics system to ensure it’s properly configured and functioning correctly.

Why Reset the Telematics System?

Resetting the telematics system after backup battery replacement is crucial for several reasons:

  • It allows the system to properly recognize the new backup battery and ensure it’s functioning correctly.
  • It helps prevent issues with the telematics system, such as error messages or reduced functionality, that can occur if the system is not properly reset.
  • It ensures the telematics system continues to provide its intended features and services, such as emergency calling, vehicle tracking, and remote diagnostics.

When to Perform Backup Battery Replacement Reset?

The backup battery replacement reset should be performed whenever the emergency backup battery in the telematics module is replaced. This is typically required every 4 years, as the backup battery cannot be recharged and must be replaced if depleted. Failing to perform the reset can cause issues with the telematics system, such as “SOS system failure” messages.

Instruction to Access the Backup Battery Replacement reset in the OBD Scanner

The Backup Battery Replacement reset can be accessed by following this instruction.

  1. Open your OBD scanner.
  2. Select Local Diagnose if you are using Launch X431.
  3. Select Car Brand Select Model (auto-detect is better to detect the vehicle VIN).
  4. Select and check the following: TS(Telematics System)
  5. Select Special Function Then click Backup Battery Replacement reset.

The sample car model with this feature is the Toyota Alphard HEV 2023.
Important Note

It’s essential to note that information is missing on whether it is required to reset the Battery Management System (BMS) after replacing the backup battery. It’s recommended to consult the vehicle’s manual or contact a professional for guidance on this matter.