Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

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.
Entire System

Symptom

Suspected Area

Link

System does not operate at all (both the blind spot monitor function and RCTA function do not operate)

Proceed to "Power Source Circuit"

Proceed to "Main Switch Circuit"

Blind spot monitor sensor LH

System cannot be turned off

Proceed to "Main Switch Circuit"

Blind spot monitor sensor LH

"Blind Spot Monitor Unavailable" is displayed on the multi-information display

Check abnormality history

Blind spot monitor sensor RH

Blind spot monitor sensor LH

Combination meter assembly

"Blind Spot Monitor System Malfunction Visit Your Dealer" is displayed on the multi-information display

Check abnormality history

Blind spot monitor sensor RH

Blind spot monitor sensor LH

Combination meter assembly

Blind Spot Monitor Function

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 retractor 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 retractor 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 Switch Circuit" in Problem Symptoms Table for the Lighting (EXT) section

Blind spot monitor sensor RH

Outer rear view mirror indicator LH does not flash

Proceed to "Turn Signal Switch Circuit" in Problem Symptoms Table for the Lighting (EXT) section

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

RCTA Function

Symptom

Suspected Area

Link

Function does not operate at all (the blind spot monitor function operates normally)

Data List / Active Test (Reverse)

Hybrid control system

Blind spot monitor sensor LH

When shift lever is in R, detection operation is normal but RCTA indicator does not appear on multi-display

CAN communication system

Blind spot monitor sensor RH

Blind spot monitor sensor LH

Rear television camera assembly*1

Parking Assist ECU *2

Multi-display assembly

*1: w/ Parking Assist Monitor System

*2: w/ Panoramic View Monitor System

READ NEXT:

 Terminals Of Ecu

TERMINALS OF ECU BLIND SPOT MONITOR SENSOR LH (MASTER) Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition V1-3 (BIND) - V1-10 (BLGD) B - W-B Blin

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) Blind spot monitor data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctionin

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the blind spot monitor main switch (combination switch assembly) on. (d) Turn the Techst

SEE MORE:

 Customization

Customizable features Your vehicle includes a variety of electronic features that can be personalized to suit your preferences. The settings of these features can be changed using the multi-information display, the Remote Touch, or at your Lexus dealer. Customizing vehicle features When c

 Removal

REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY Click here 2. REMOVE REAR DECK FLOOR BOX Click here 3. REMOVE DECK FLOOR BOX LH Click here 4. PRECAUTIO

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