Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

  • If no problem symptoms are found when a DTC is output in the DTC check on the lane tracing assist, check each symptom by checking the suspected areas in the order they are listed.
  • 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:

Before performing failure diagnosis according to the following inspection points, check the forward recognition camera system power source circuit fuses and relays.

LANE CONTROL SYSTEM

Symptom

Suspected Area

Link

Lane tracing assist system does not operate at all

Steering pad switch circuit

Forward recognition camera adjustment

HINT:

Perform forward recognition camera axis alignment with either "One time recognition" or "Sequential recognition".

  • One time recognition:
  • Sequential recognition:

The LTA/LDA indicator light does not turn on even by operating the LTA/LDA main switch (steering pad switch assembly)

Indicator circuit

Steering pad switch circuit

Combination meter assembly

The LTA/LDA indicator light does not turn off even by operating the LTA/LDA main switch (steering pad switch assembly)

Indicator circuit

Steering pad switch circuit

Combination meter assembly

The lane tracing assist is not canceled even by operating the turn signals

Data list / Active test (Check the item "Turn Switch (Right)", "Turn Switch (Left)")

Turn signal switch circuit

The lane tracing assist does not operate many times even when the white lines are visible

Check conditions for operating/not operating

Forward recognition camera adjustment

HINT:

Perform forward recognition camera axis alignment with either "One time recognition" or "Sequential recognition".

  • One time recognition:
  • Sequential recognition:

The lane tracing assist is operating but the system control status is not displayed on the multi-information display

Data list / Active test (Check the item "LDA Control")

Combination meter assembly

Lane departure warning function is on but the buzzer does not sound even when straying from white line

Combination meter assembly

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 Diagnosis System

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 Components

COMPONENTS ILLUSTRATION *A w/ AVS - - *1 REAR NO. 1 SUSPENSION ARM ASSEMBLY LH *2 REAR SHOCK ABSORBER ASSEMBLY LH *3 REAR SUSPENSION TOE ADJUST CAM SUB-ASSEMBLY *4 NO. 2 CAMBER ADJUST CAM N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part * F

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