DTC B1089[44] ECU Failure (Data Memory Failure) (Wireless Access Module (Mid-version/Lo-version [Except Passive Entry and Start System]))

1. DTC B1089[44] description

This diagnosis is performed on the microprocessor inside the wireless access module.

2. Condition for setting DTC B1089[44]

  • The wireless access module detects an EEPROM malfunction.

3. Action taken when DTC B1089[44] sets

  • The wireless access module stops the functions except the diagnosis function.

When the ignition switch is ON:

  • The key monitor warning light illuminates.
  • CHECK SYSTEM is displayed on the multi-information display for 10 seconds (models with MID only).

When door locking/unlocking is requested:

  • The key monitor warning light illuminates for 10 seconds.
  • CHECK SYSTEM is displayed on the multi-information display for 10 seconds (models with MID only).