WHEN REMOVING,INSTALLING,REPAIRING OR REPLACING PARTS PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

Refer to the LEXUS Repair Manual for each inspection procedure.


  1. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Replacement Part Necessary Procedures Effects / Inoperative Functions When Necessary Procedures are not Performed Note
    ECM Vehicle Identification Number (VIN) registration DTC 0630 is output -
    -
    -

      for 2AR-FSE (w/ EGR System)

    • Throttle body with motor assembly

    • Cleaning the deposits from the throttle body with motor assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust camshaft)

    • Camshaft timing gear assembly

    • Camshaft timing exhaust gear assembly

    • Piston or piston ring

    • Mass air flow meter sub-assembly

    • Fuel injector assembly (for direct injection)

    • Fuel injector assembly (for port injection)

    • Fuel pump (for high pressure)

    • Fuel pump (for low pressure)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • EGR valve assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    		 Initialization Engine control system -

      for 2AR-FSE (w/o EGR System)

    • Throttle body with motor assembly

    • Cleaning the deposits from the throttle body with motor assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust camshaft)

    • Camshaft timing gear assembly

    • Camshaft timing exhaust gear assembly

    • Piston or piston ring

    • Mass air flow meter sub-assembly

    • Fuel injector assembly (for direct injection)

    • Fuel injector assembly (for port injection)

    • Fuel pump (for high pressure)

    • Fuel pump (for low pressure)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    		 Initialization Engine control system -

      for 2GR-FXE

    • Throttle body with motor assembly

    • Cleaning the deposit of the throttle with motor body assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust side)

    • Camshaft timing gear assembly

    • Piston or piston ring

    • Mass air flow meter

    • Fuel injector assembly (for direct injection)

    • Fuel injector assembly (for port injection)

    • Fuel pump (for high pressure)

    • Fuel pump (for low pressure)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Gas leaks form exhaust system

    • Knock sensor

    		 Initialization Engine control system -

    • Forward recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Dynamic radar cruise control system

    • Forward recognition camera system

    • LDA/LKA system

    • Pre-crash safety system

    • Adaptive high beam system

    • Automatic high beam system

    		 -

    • Millimeter wave radar sensor assembly

    • No. 1 millimeter wave radar sensor bracket

    		 Adjust millimeter wave radar sensor assembly

    • Dynamic radar cruise control system

    • Forward recognition camera system

    • LDA/LKA system

    • Pre-crash safety system

    		 -

      for 2GR-FXE

    • Power steering ECU assembly

    • Hybrid vehicle transmission assembly

    		 Perform clutch oil pressure value learning initialization Large shift shock -
    Absorber control ECU Test mode procedure Adaptive variable suspension system -

    • Tire pressure warning ECU and receiver

    • Tire pressure warning valve and transmitter

    • Transmitter ID registration

    • Initialization

    		 Tire pressure warning system -
    Skid control ECU assembly

    • Initialization and calibration of the linear solenoid valve

    • Yaw rate and acceleration sensor zero point calibration

    • Change in brake feeling

    • VSC and ABS do not operate

    		 -
    Brake actuator assembly Bleed air

    • Decrease in brake effectiveness

    • DTC output

    • Clearing stored linear solenoid valve calibration data

    • Initialization and calibration of the linear solenoid valve

    • Change in brake feeling

    • VSC and ABS do not operate

    • Brake pedal stroke sensor assembly

    • Brake pedal

    • Clearing stored linear solenoid valve calibration data

    • Initialization and calibration of the linear solenoid valve

    • Change in brake feeling

    • VSC and ABS do not operate
    Yaw rate sensor

    • Clearing zero point calibration data

    • Yaw rate sensor zero point calibration

    		 VSC and ABS do not operate
    Electric parking brake ECU Initialization Electric parking brake system -

    Parking brake with bracket actuator assembly

    Tech Tips

    Replaced or removed and installed

    • Initialization

    • Parking brake bedding

    • Parking brake with bracket actuator assembly

    • Rear disc

    • Parking brake shoe

    Tech Tips

    Replaced or removed and installed

    		 Parking brake bedding

      for 2AR-FSE

    • Power steering ECU assembly

    • Power steering link assembly

    		 Calibration Power steering system -

      for 2GR-FXE

    • Power steering ECU assembly

    • Power steering link assembly

    		 Calibration Power steering system -

    • Front steering control ECU

    • Steering column

    • Steering intermediate shaft

    • Steering actuator assembly

    • Front wheel alignment

    		 Calibration and initialization Variable gear ratio steering system -

    • Rear steering control ECU

    • Rear steering link assembly

    • Rear wheel alignment

    		 Calibration Dynamic rear steering system -

      w/ Telematics System

    • Multi-media module receiver assembly

    • Telematics Transceiver (w/ Telematics Transceiver)

    		 Vehicle contract setting

    • G-BOOK service

    • Emergency call service

    		 -
    -

      w/ Telematics System

    • Multi-media module receiver assembly

    		 Download necessary data Some G-BOOK service content will be unavailable -
    -
    Multi-media module receiver assembly Parking assist monitor system initialization Parking assist monitor system -
    Spiral with sensor cable sub-assembly

    • Steering angle neutral point (Initialize parking assist monitor system)

    • Steering angle setting
    Suspension, tires, etc. Rear television camera optical axis (Back camera position setting)
    Rear television camera assembly
    Inner rear view mirror assembly Register transmitter code Garage door opener function -
    DCM (telematics transceiver) Vehicle contract setting G-BOOK service -

    • Certification ECU (smart key ECU assembly)

    • ID code box (immobiliser code ECU)

    • Main body ECU (multiplex network body ECU)

    • Steering lock ECU (steering lock actuator assembly)

    • Electrical key transmitter sub-assembly

    • Power management control ECU

    		 Registration

    • Wireless door lock operation

    • Entry operation

    • Engine starting

    • Steering unlock

    		 Refer to the Service Bulletin for the registration method

    • Air conditioning amplifier assembly

    • No. 1 blower damper servo sub-assembly

    • No. 1 rear cooling unit damper servo sub-assembly

    • No. 1 air conditioning radiator damper servo sub-assembly

    • No. 2 air conditioning radiator damper servo sub-assembly

    • No. 3 air conditioning radiator damper servo sub-assembly

    • No. 4 air conditioning radiator damper servo sub-assembly

    • No. 5 air conditioning radiator damper servo sub-assembly

    • No. 6 air conditioning radiator damper servo sub-assembly

    • No. 7 air conditioning radiator damper servo sub-assembly

    		 Initialization servo motor (Air conditioning system) Air conditioning system -
    Air Conditioning Amplifier Assembly Memory registration Memory call function -

    • Power seat switch assembly (for Driver Side, Standard Seat Type)

    • Position control ECU assembly (for Driver Side, Sports Seat Type, Luxury Seat Type)

    • Position control ECU assembly (for Front Passenger Side, Luxury Seat Type)

    		 Position sensor initialization

    • During manual operation, buzzer sounds

    • Memory function does not operate

    • Interference stop control does not operate normally

    • Linked control does not operate normally

    		 -

    • Power window regulator motor assembly

    • Power window regulator sub-assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up/down function

    • Jam protection function

    • Wireless transmitter-linked function

    • Key-linked function

    • Catch protection function

    		 -

    • Sliding roof glass sub-assembly

    • Sliding roof housing sub-assembly

    • Sliding roof drive gear sub-assembly

    • Sliding roof drive cable sub-assembly

    		 Initialize sliding roof system

    • Auto operation

    • Jam protection function

    • Sliding roof operation after power switch is turned off

    • Wireless door lock control function

    • Key-linked operation function

    		 -

    • Luggage closer motor assembly

    • MPX-B fuse

    • Luggage door closer assembly

    		 Initialization Power trunk lid system -
    Headlight ECU sub-assembly LH

    • Synchronize the vehicle information

    • Perform headlight ECU sub-assembly LH initialization

    		 Headlight leveling function -
    The vehicle height changes due to replacement of suspension components or after performing such operations as removal and reinstallation or replacement of the rear height control sensor subassembly LH Perform headlight ECU sub-assembly LH initialization