DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CLEAR DTC
- Clear the DTCs.
Powertrain > Transmission > Clear DTCs
HINT:
Write down the currently output DTCs before clearing them.
Result
Proceed to NEXT
Result:
NEXT
See step 2
- Clear the DTCs.
- CHECK DTC OUTPUT (DTC U0129-87)
Pre-procedure1
- Start the engine and drive the vehicle at a low speed.
Procedure1
- Read the DTCs using the GTS.
Powertrain > Transmission > Trouble Codes
Result
Result Proceed to U0129-87 is not output A U0129-87 is output B Post-procedure1
- None
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]
Result:
B
GO TO CAN COMMUNICATION SYSTEM. Refer to DIAGNOSIS SYSTEM [10/2022 - 08/2023] Refer to DIAGNOSIS SYSTEM [08/2023 - 10/2024] Refer to DIAGNOSIS SYSTEM [10/2024 - ]
- Start the engine and drive the vehicle at a low speed.