Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Problem Symptoms Table

HINT:

• Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
• Inspect the fuses related to this system before inspecting the suspected areas below.

System Diagram

SYSTEM DIAGRAM ...

On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN SYSTEM CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fans when insp ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lexus Enform System: DCM Data Signal Circuit between Navigation ECU and DCM
DESCRIPTION This circuit is used to send and receive signals between the DCM (Telematics Transceiver), radio receiver assembly and navigation ECU. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) (a) Disconnect the J157 DCM (T ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU
DESCRIPTION This circuit includes the navigation ECU and radio receiver assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) (a) Disconnect the J149 radio receiver assembly connector. (b) Disconnect the J153 navigation ECU connector. ...