Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
  • If the problem only occurs in certain locations or at certain times of day, check for wave interference.
  • If optional components are installed, check for wave interference from the components.
Immobiliser System

Symptom

Suspected Area

Link

Security indicator light does not blink

Proceed to "Security Indicator Light Does not Blink"

Immobiliser system does not operate properly

Proceed to "Immobiliser System does not Operate Properly"

Hybrid control system cannot be started*1

Certification ECU (Smart key ECU assembly)

Hybrid vehicle control ECU

Hybrid control system

Power source mode cannot be changed*1

Power switch

Certification ECU (Smart key ECU assembly)

Steering lock lock/unlock not possible*2

Steering lock ECU (Steering lock actuator assembly)

Hybrid control system cannot be started by Lexus Enform Remote (Hybrid control system can be started by push-button start function)*3

Proceed to "Remote Engine Starter does not Operate"

  • *1: Refer to Problem Symptoms Table for Smart Access System with Push-button Start (for Start Function).
  • *2: Refer to Problem Symptoms Table for Steering Lock System.
  • *3: w/ Lexus Enform Remote

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 Terminals Of Ecu

TERMINALS OF ECU CHECK POWER SWITCH (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Input/Output Wiring Color Terminal Description

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) The certification ECU (smart key ECU assembly) and hybrid vehicle control ECU control the vehicle immobiliser system functions. Immobiliser system data and Diagnostic

 Dtc Check / Clear

DTC CHECK / CLEAR NOTICE: When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until

SEE MORE:

 Installation

INSTALLATION PROCEDURE 1. INSTALL KICK DOOR CONTROL SENSOR (a) Insert the guide, attach the 2 claws and install the kick door control sensor to the kick door control bracket as shown in the illustration. NOTICE: Do not subject the kick door control sensor to strong impacts or force, and do n

 USB Audio System Recognition/Play Error

DESCRIPTION When a USB device or "iPod" is connected to the USB jack of the No. 1 stereo jack adapter assembly, it must have playable files. The device must also communicate with and be recognized by the radio receiver assembly. This diagnosis procedure is for when a device is not recognized, or fil

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