Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: DCM Communication Stop Mode

NOTICE:

• Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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• Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

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• After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

  DTC check procedure: Turn the engine switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

• After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed.

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• Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

• Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
• Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

Parking Assist ECU Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Parking Assist ECU Communication Stop Mode Either condition is met: "Panoramic View Monitor" is not displayed on the CAN Bus Check scree ...

Millimeter Wave Radar Sensor Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Millimeter Wave Radar Sensor Communication Stop Mode Either condition is met: "Front Radar" is not displayed on the CAN Bus Check screen ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Rear No. 1 Seat Inner Belt Assembly(for Captain Seat Type): Inspection
INSPECTION PROCEDURE 1. INSPECT REAR SEAT 3 POINT TYPE BELT ASSEMBLY RH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 Rear No. 1 RH seat belt unfastened Below 1 Ω Rear No. 1 ...

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Vehicle Stability Control System: Steering Angle Sensor Module Signal Stuck In Range (C05262A)
DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the steering angle sensor via CAN communication. HINT: When a malfunction occurs in the communication line to the steering angle sensor, U012687 is output. If a DTC related to the CAN communication line is output, first ...