Caution / Notice / Hint
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- If DTC B1244-00 is output, perform troubleshooting for that DTC first.
w/ Automatic Headlight Beam Level Control System: Refer to DTC B1244-00: Light Sensor Circuit Malfunction [09/2023 - ]
w/o Automatic Headlight Beam Level Control System: Refer to DTC B1244-00: Light Sensor Circuit Malfunction [09/2023 - ]
- The air conditioning system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the air conditioning system after confirming that the communication systems are functioning properly.
- When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.
- To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.