Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Problem Symptoms Table
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 and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| System does not operate at all | Proceed to "Power Source Circuit" | |
| CAN communication system | | |
| Blind spot monitor sensor LH | | |
| System cannot be turned off | CAN communication system | |
| Blind spot monitor sensor LH | | |
| "BSM not available" or "Check BSM System" is displayed on the multi-information display | Check abnormality history | |
| Blind spot monitor sensor RH | | |
| Blind spot monitor sensor LH | | |
| Combination meter assembly | |
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| Symptom | Suspected Area | Link |
|---|---|---|
| Outer rear view mirror indicator RH does not illuminate | Proceed to "Blind Spot Monitor Beam Axis Confirmation" | |
| Outer mirror RH | | |
| Outer mirror control ECU assembly RH | | |
| Outer mirror actuator assembly RH | | |
| Blind spot monitor sensor RH | | |
| Outer rear view mirror indicator LH does not illuminate | Proceed to "Blind Spot Monitor Beam Axis Confirmation" | |
| Outer mirror LH | | |
| Outer mirror control ECU assembly LH | | |
| Outer mirror actuator assembly LH | | |
| Blind spot monitor sensor LH | | |
| Outer rear view mirror indicator RH remains illuminated | Proceed to "Blind Spot Monitor Beam Axis Confirmation" | |
| Blind spot monitor sensor RH | | |
| Outer rear view mirror indicator LH remains illuminated | Proceed to "Blind Spot Monitor Beam Axis Confirmation" | |
| Blind spot monitor sensor LH | | |
| Outer rear view mirror indicator RH does not flash | Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*1 | |
| Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*2 | | |
| Blind spot monitor sensor RH | | |
| Outer rear view mirror indicator LH does not flash | Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*1 | |
| Proceed to "Turn Signal Light" in Problem Symptoms Table for the Lighting (EXT) section*2 | | |
| Blind spot monitor sensor LH | | |
| Outer rear view mirror indicator RH continues to flash | Blind spot monitor sensor RH | |
| Outer rear view mirror indicator LH continues to flash | Blind spot monitor sensor LH | |
| Symptom | Suspected Area | Link |
|---|---|---|
| Function does not operate at all (Blind spot monitor function operates normally) | Data List / Active Test (Reverse) | |
| Automatic transmission system (U881E) | | |
| Automatic transmission system (U881F) | | |
| Blind spot monitor sensor RH | | |
| When shift lever is in R, detection operation is normal but RCTA indicator does not appear on multi-display assembly | CAN communication system | |
| Parking assist ECU*3 | | |
| Radio receiver assembly | | |
| Blind spot monitor sensor LH | | |
| Blind spot monitor sensor RH | | |
| Multi-display assembly | |
- *1: w/ Automatic Headlight Beam Level Control System
- *2: w/o Automatic Headlight Beam Level Control System
- *3: w/ Panoramic View Monitor System
Operation Check
OPERATION CHECK HINT: The blind spot monitor beam axis confirmation is performed to confirm whether the sensor's beam axis is correct, and perform adjustment of the beam axis by using reflector. BLIND ...
Terminals Of Ecu
TERMINALS OF ECU BLIND SPOT MONITOR SENSOR LH (MASTER) Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition X2-4 (OMIL) - X2-10 (BLGD) G - W-B Oute ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Do-it-yourself
maintenance: Engine compartment
Washer fluid tank
Brake fluid reservoir
Engine oil level dipstick
Engine coolant reservoir
Power control unit coolant reservoir
Fuse boxes
Radiator
Power control unit coolant
radiator
Condenser
Electric cooling fans
Engine oil filler cap
Engine oil
With the engine at ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Dynamic Torque Control Awd System: Low or High Power Supply Voltage (C1241)
DESCRIPTION If a malfunction in the power source circuit occurs, or a communication malfunction with the skid control ECU (brake actuator assembly) or speed sensor occurs, the 4WD ECU assembly prohibits operation. DTC No. Detection Item DTC Detection Condition Trouble Area C1241 Low o ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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