Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the auxiliary battery voltage becomes low, windshield deicer operation is canceled to prioritize supplying power to the power steering system.

for Power Tilt and Power Telescopic Steering Column: Click here

for Manual Tilt and Manual Telescopic Steering Column: Click here

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.
Windshield Deicer System

Symptom

Suspected Area

Link

Windshield deicer does not operate

Proceed to "Windshield Deicer does not Operate"

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 Terminals Of Ecu

TERMINALS OF ECU CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the I50 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s) in th

 Data List / Active Test

DATA LIST / ACTIVE TEST ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive func

 Windshield Deicer does not Operate

DESCRIPTION When the windshield deicer switch is operated, the operation signal is transmitted to the radio receiver assembly. The radio receiver assembly transmits the operation signal to the air con

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 Headlight Dimmer Switch Circuit

DESCRIPTION The main body ECU (multiplex network body ECU) receives light control switch signals, dimmer switch signals, fog light switch signals from the headlight dimmer switch. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Recognition code registration is necessary when replacing the main bo

 Inspection

INSPECTION PROCEDURE 1. PRECAUTION NOTICE: After performing the following check, initialize the fold seat control ECU (initial position reset and initial position memorization). Click here 2. INSPECT REAR SEATBACK FRAME SUB-ASSEMBLY LH (a) Check the operation of the reclining motor. (1) Apply auxi

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