Lexus NX: 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.

Heated Steering Wheel System

Symptom

Suspected Area

Link

Steering wheel does not heat up when heated steering wheel switch is pressed

Refer to "Steering wheel does not heat up when heated steering wheel switch is pressed"

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 Terminals Of Ecu

TERMINALS OF ECU HINT: Perform the inspection from the harness side with the connectors connected. STEERING HEATER AND VIBRATION ECU (a) Measure the voltage or resistance according to the value(s) in

 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

 Steering Wheel does not Heat Up When Heated Steering Wheel Switch is Pressed

DESCRIPTION Click here WIRING DIAGRAM Click here CAUTION / NOTICE / HINT HINT: Inspect the fuses for circuits related to this system before performing the following inspection procedure. The

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 Parts Location

PARTS LOCATION ILLUSTRATION *A w/ Panoramic View Monitor System *B w/ Parking Assist Monitor System *1 FRONT CORNER ULTRASONIC SENSOR (FR SENSOR) *2 FRONT CENTER ULTRASONIC SENSOR (FRC SENSOR) *3 FRONT CENTER ULTRASONIC SENSOR (FLC SENSOR) *4 FRONT CORNER ULTRASONIC SEN

 Extension Module Disconnected 2 (B1543)

DESCRIPTION If the radio receiver assembly cannot detect the navigation ECU for a certain period of time (90 seconds) after the power switch is turned on (ACC) and the radio receiver assembly confirms that the information is missing by checking past navigation ECU recognition information (registered

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