Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.

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.
  • If the auxiliary battery voltage becomes low, rear mirror heater operation is canceled to prioritize supplying power to the power steering system.

    for Manual Tilt and Manual Telescopic Steering Column: Click here

    for Power Tilt and Power Telescopic Steering Column: Click here

General:

Symptom

Suspected Area

Link

RH side power mirror cannot be adjusted with power mirror switch

Outer rear view mirror assembly RH

Outer mirror switch assembly

Harness or connector

-

LH side power mirror cannot be adjusted with power mirror switch

Outer rear view mirror assembly LH

Outer mirror switch assembly

Harness or connector

-

Power mirror cannot be adjusted with power mirror switch

Outer mirror switch assembly

Harness or connector

-

Mirror heater does not operate

Proceed to "Mirror Heater does not Operate with Rear Defogger Switch"

Retract Function:

Symptom

Suspected Area

Link

Power retract mirrors do not operate

Proceed to "Power Retract Mirrors do not Operate with Power Retract Mirror Switch"

AUTO power retract mirrors do not operate

Proceed to "AUTO Power Retract Mirrors do not operate"

READ NEXT:

 Terminals Of Ecu

TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU), INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY *1 Main Body ECU (Multiplex Network Body ECU) - - (a) Remove the main body ECU

 Diagnosis System

DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here INSPECT AUXILIARY BATTERY VOLTAGE (a) Measure the auxiliary battery voltage with the power switch off. Standard voltage: 11 to 14 V If th

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th

SEE MORE:

 Oil Pressure Switch

ComponentsCOMPONENTS ILLUSTRATION *1 ENGINE OIL PRESSURE SWITCH ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque TOYOTA Genuine Adhesive 1344, Three Bond 1344 or equivalent. ★ Precoated part - - RemovalREMOVAL PROCEDURE 1. REMOVE ENGINE OIL PRESSURE SWITCH

 Inspection

INSPECTION PROCEDURE 1. INSPECT TRIP SWITCH (LIGHT CONTROL RHEOSTAT) *1 Up Switch *2 Down Switch *a Component without harness connected (Trip Switch (Light Control Rheostat)) (a) Check the resistance. Measure the resistance according to the value(s) in the table below. Standard

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