Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Fail-safe Chart

FAIL-SAFE CHART

MALFUNCTION DETECTION

(a) Operation when malfunction is detected

Content

Operation

Heater failure

Overcurrent detection of drive element

Heater output off

Overheating detection of drive element

Heater output off

Power failure

Low-voltage detection

Heater output off

Over-voltage detection

Heater output off

Heater OFF timer

30 minutes after heated steering wheel system is turned on

Heater output off

(b) Malfunction detection conditions

(1) When an open or short in the steering wheel heater unit thermistor continues for 2 seconds or more.

(2) When the steering heater switch is pressed continuously for 10 seconds or more.

    Heated Steering Wheel System
    ...

    How To Proceed With Troubleshooting
    CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the heated steering wheel system. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. INSPECT BATTERY VO ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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