Lexus NX: Initialization

INITIALIZATION

NOTICE:

  • The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU sub-assembly LH removal/installation are shown below.

    Performed Work or System Condition

    Necessary Procedures

    Proceed to

    Replacement of the headlight ECU sub-assembly LH and headlight assembly LH

    Synchronize the vehicle information

    Perform headlight ECU sub-assembly LH initialization

    Replacement of the rear height control sensor sub-assembly LH, removal and reinstallation of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. have been performed

    Perform headlight ECU sub-assembly LH initialization

    Auxiliary battery terminal is disconnected and connected

    Steering sensor zero point calibration

  • If the steering sensor zero point calibration is not performed, the AFS (adaptive front-lighting system) and cornering lights may not operate correctly.
  • A new headlight ECU sub-assembly LH cannot operate until the vehicle information is registered.
  • After replacing the headlight ECU sub-assembly LH, it is necessary to perform vehicle information registration and initialization.
  • Even if the headlight ECU sub-assembly RH is replaced with a new one, vehicle information registration and initialization are not necessary.

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 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE NOTICE: If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH. Click he

 Terminals Of Ecu

TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here CHECK HEADLIGHT ECU SUB-ASSEMBLY LH Click here CHECK HEADLIGHT ECU SUB-ASS

 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 Techstream on. (d) Enter the following menus: Body Electrical / AFS / Trouble Codes.

SEE MORE:

 Lost Communication With Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U013187,U015587,U029387)

DESCRIPTION When a malfunction is detected between various ECUs and sensors, these DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area U012587 Lost Communication With Multi-axis Acceleration Sensor Module Missing Message 3 seconds after the power switch is t

 Generator Inverter Performance (P0A7A-122)

DTC SUMMARY MALFUNCTION DESCRIPTION This DTC indicates that a large current flowed in the inverter for the generator. The cause of this malfunction may be one of the following: Area Main Malfunction Description Step Inverter low-voltage circuit The connectors are not connected properly

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