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Initialization [09/2017 - 05/2019]

  1. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED 
    Necessary Procedures Effect/Inoperative Function When Necessary Procedures are not Performed Link
    Memorize steering angle neutral point Lane departure alert system (w/ Steering Control) Refer to INITIALIZATION [09/2017 - 05/2019]
    Pre-collision system
    Intelligent clearance sonar system*1
    AFS (Adaptive front-lighting system)
    Parking assist monitor system Refer to INITIALIZATION [09/2017 - ]
    Panoramic view monitor system Refer to INITIALIZATION [09/2017 - ]
    w/ Power Back Door: 
    1. Reset back door close position
    		 Power back door function Refer to INITIALIZATION [10/2014 - 05/2019]
    w/o Power Back Door: 
    1. Reset back door lock position
    		 Power door lock control system Refer to INITIALIZATION [10/2014 - ]

    () *1: When performing learning using the Techstream.

    NOTE:

    After the engine switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

    WAITING TIME BEFORE DISCONNECTING CABLE FROM NEGATIVE (-) BATTERY TERMINAL

    System Name See Procedure
    Vehicle enrolled in Lexus Enform system or safety connect system 6 minutes
    Vehicle not enrolled in Lexus Enform system and safety connect system 1 minute
  2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED 
    Replacement Part Necessary Procedure Effect / Inoperative Function when Necessary Procedures are not Performed Link
    ECM Vehicle Identification Number (VIN) registration DTC P063051 is output Refer to REGISTRATION [10/2014 - ]
    Heavy Knock History
    1. Save history
    2. Write history
    		 -
    If possible, read the transaxle compensation code from the previous ECM Possible: 
    1. Reset memory
    2. Input transaxle compensation code (Into the new ECM)
    3. Perform road test to allow ECM to learn
    • Large shift shock
    • Deterioration of fuel efficiency
    		 Refer to REGISTRATION [10/2014 - ] for U661E Registration
    Refer to INITIALIZATION [10/2014 - ] for U661E Initialization
    Refer to REGISTRATION [10/2014 - ] for U661F Registration
    Refer to INITIALIZATION [10/2014 - ] for U661F Initialization
    Impossible: 
    1. Reset memory
    2. Reset transaxle compensation code
    3. Perform road test to allow ECM to learn
    Code registration (Immobilizer system) Engine start Refer to REGISTRATION [10/2014 - 05/2019]
    Piston ring Heavy Knock History
    1. Initializes the stored history data
    		 - Refer to INITIALIZATION [10/2014 - 05/2019]
    • 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 port injection)
    • Fuel injector assembly (for direct injection)
    • Fuel pump (for low pressure side)
    • Fuel pump (for high pressure side)
    • Fuel pressure sensor (for low pressure side)
    • Fuel pressure sensor (for high pressure side)
    • Air fuel ratio sensor
    • Heated oxygen sensor
    • Engine coolant temperature sensor
    • Spark plug
    • Ignition coil assembly
    • Air leaks from intake system
    • Gas leaks from exhaust system
    • Knock control sensor
    		 Inspection after repair Poor idle, engine start, etc.
    • Forward recognition camera
    • Windshield glass
    		 Adjust forward recognition camera
    • Dynamic radar cruise control system
    • Forward recognition camera system
    • Lane departure alert system (w/ Steering Control)
    • Pre-collision system
    • Automatic high beam system
    		 Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [09/2017 - 05/2019]
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly
    • Dynamic radar cruise control system
    • Forward recognition camera system
    • Lane departure alert system (w/ Steering Control)
    • Pre-collision system
    		 Refer to ADJUSTMENT [09/2017 - 05/2019]
    Automatic Transaxle Assembly
    1. Reset memory
    2. Input transaxle compensation code into ECM
    3. Perform road test to allow ECM to learn
    • Large shift shock
    • Deterioration of fuel efficiency
    		 Refer to REGISTRATION [10/2014 - ] for U661F Registration
    Refer to INITIALIZATION [10/2014 - ] for U661F Initialization
    Refer to REGISTRATION [10/2014 - ] for U661E Registration
    Refer to INITIALIZATION [10/2014 - ] for U661E Initialization
    • Valve body assembly
    • Shift solenoid valve SL3 and/or SL4
    1. Reset memory
    2. Reset transaxle compensation code
    3. Perform road test to allow ECM to learn
    • Large shift shock
    • Deterioration of fuel efficiency
    Shift solenoid valve SL1 and/or SL2 Perform road test to allow ECM to learn
    • Large shift shock
    • Deterioration of fuel efficiency
    4WD ECU assembly
    HINT: 
    When replacing the 4WD ECU assembly with a new one, it is not necessary to perform initialization.    		 Clear zero point calibration data AWD initial performance (acceleration, etc.) Refer to CALIBRATION [10/2014 - ]
    Absorber control ECU Perform registration of vehicle identification information
    • Interrupts damping force control
    • DTCs are output
    		 Refer to TEST MODE PROCEDURE [10/2014 - ]
    • Tire pressure warning ECU and receiver
    • Tire pressure warning valve and transmitter
    • Transmitter ID registration
    • Initialization
    • When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates.
    • Tire pressure warning function
    		 Refer to REGISTRATION [09/2015 - 05/2019] for Registration
    Refer to INITIALIZATION [09/2015 - 05/2019] for Initialization
    Skid control ECU (brake actuator assembly) Yaw rate and acceleration sensor zero point calibration and store system information
    • DTCs are output
    • ABS warning light illumination
    • Slip indicator light illumination
    • VSC disable or malfunctioning
    		 Refer to CALIBRATION [10/2014 - 05/2019]
    Yaw rate and acceleration sensor (airbag ECU assembly)
    1. Clear zero point calibration data and store system information
    2. Yaw rate and acceleration sensor zero point calibration and store system information
    Clear zero point calibration data AWD initial performance (acceleration, etc.) Refer to CALIBRATION [10/2014 - ]
    Wheel alignment adjustment
    1. Clear zero point calibration data.
    2. Perform yaw rate and acceleration sensor zero point calibration.
    		 VSC malfunctioning Refer to CALIBRATION [10/2014 - 05/2019]
    Parking brake ECU assembly Operate the electric parking brake switch (integration control and panel assembly) Parking brake indicator light (red) blinks when the engine switch is first turned on (IG) Refer to PRECAUTION [10/2014 - ]
    for Power Tilt and Power Telescopic Steering Column: 
    • Power steering ECU assembly
    • Electric power steering column sub-assembly
    		 Perform torque sensor zero point calibration
    • DTCs are output
    • Steering effort different between turning steering wheel left and right
    		 Refer to CALIBRATION [10/2014 - 05/2019]
    Power steering ECU assembly Assist map writing
    • DTCs are output
    • EPS warning light illuminated
    		 Refer to CALIBRATION [10/2014 - 05/2019] for Manual Tilt and Manual Telescopic Steering Column
    Refer to CALIBRATION [10/2014 - 05/2019] for Power Tilt and Power Telescopic Steering Column
    Radio receiver assembly After replacing the radio receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, radio ID registration is necessary.*1 The SXM satellite radio cannot be used -
    Re-install the eOwner's manual The eOwner's manual cannot be used
    DCM (telematics transceiver) DCM activation Safety connect system Refer to DCM ACTIVATION [09/2017 - 10/2019]
    Code registration (Immobilizer system) Telematics system Refer to REGISTRATION [10/2014 - 05/2019]
    Front bumper assembly w/ Intelligent Clearance Sonar System: 
    • Measurement of ultrasonic sensor detection angle
    • Ultrasonic sensor detection angle registration
    • Intelligent clearance sonar system
    • Intuitive parking assist system (w/ Intelligent Clearance Sonar System)
    		 Refer to CALIBRATION [09/2017 - ]
    w/ Panoramic View Monitor System: 
    1. Front television camera view adjustment
    		 Panoramic view monitor system Refer to CALIBRATION [09/2017 - 05/2019]
    w/ Intelligent Clearance Sonar System: 
    • Rear bumper assembly
    • Ultrasonic sensor
    • Measurement of ultrasonic sensor detection angle
    • Ultrasonic sensor detection angle registration
    • Intelligent clearance sonar system
    • Intuitive parking assist system (w/ Intelligent Clearance Sonar System)
    		 Refer to CALIBRATION [09/2017 - ]
    Clearance warning ECU assembly w/ Intelligent Clearance Sonar System: 
    • Measurement of ultrasonic sensor detection angle
    • Steering angle neutral point
    • Bumper type registration
    • Ultrasonic sensor detection angle registration
    • Intelligent clearance sonar system
    • Intuitive parking assist system (w/ Intelligent Clearance Sonar System)
    		 Refer to CALIBRATION [09/2017 - ]
    w/ Intuitive parking assist system (w/o Intelligent Clearance Sonar System): 
    1. Registration of bumper type
    		 Intuitive parking assist system (w/o Intelligent Clearance Sonar System) Refer to CALIBRATION [09/2017 - 07/2020]
    w/ Intuitive parking assist system (w/o Intelligent Clearance Sonar System): 
    1. Ultrasonic sensor (front left sensor, front left center sensor, front right center sensor, front right sensor)
    		 Initialization of ultrasonic sensors (front left sensor, front left center sensor, front right center sensor, front right sensor) Intuitive parking assist system (w/o Intelligent Clearance Sonar System) Refer to CALIBRATION [09/2017 - 07/2020]
    w/ Intuitive parking assist system (w/o Intelligent Clearance Sonar System): 
    1. Ultrasonic sensor (rear left sensor, rear left center sensor, rear right center sensor, rear right sensor)
    		 Initialization of ultrasonic sensors (rear left sensor, rear left center sensor, rear right center sensor, rear right sensor)
    Steering sensor w/ Intelligent Clearance Sonar System: 
    1. Steering angle neutral point (Initialize intelligent clearance sonar system)
    		 Intelligent clearance sonar system Refer to CALIBRATION [09/2017 - ]
    w/ Parking Assist Monitor System: 
    • Steering angle neutral point (Initialize parking assist monitor system)
    • Steering angle setting
    		 Parking assist monitor system Refer to INITIALIZATION [09/2017 - ] for Initialization
    Refer to CALIBRATION [09/2017 - ] for Calibration
    w/ Panoramic View Monitor System: 
    • Steering angle neutral point (Initialize panoramic view monitor system)
    • Steering angle setting
    		 Panoramic view monitor system Refer to INITIALIZATION [09/2017 - ] for Initialization
    Refer to CALIBRATION [09/2017 - 05/2019] for Calibration
    Suspension, tires, etc.*2 w/ Intelligent Clearance Sonar System: 
    • Measurement of ultrasonic sensor detection angle
    • Ultrasonic sensor detection angle registration
    		 Intelligent clearance sonar system Refer to CALIBRATION [09/2017 - ]
    w/ Parking Assist Monitor System: 
    1. Rear television camera assembly optical axis (Back camera position setting)
    		 Parking assist monitor system Refer to CALIBRATION [09/2017 - ]
    w/ Panoramic View Monitor System: 
    • Parking assist ECU initialization
    • Adjust steering angle
    		 Panoramic view monitor system Refer to CALIBRATION [09/2017 - 05/2019]
    Rear television camera assembly w/ Parking Assist Monitor System: 
    • Parking assist monitor system initialization
    • Rear television camera assembly optical axis (Back camera position setting)
    		 Parking assist monitor system Refer to CALIBRATION [09/2017 - ]
    w/ Panoramic View Monitor System: 
    1. Rear television camera view adjustment
    		 Panoramic view monitor system Refer to CALIBRATION [09/2017 - 05/2019]
    w/ Panoramic View Monitor System: 
    1. Parking assist ECU
    • Parking assist ECU initialization
    • Adjust steering angle
    		 Panoramic view monitor system Refer to CALIBRATION [09/2017 - 05/2019]
    Blind spot monitor sensor Blind Spot Monitor Beam Axis Adjustment
    • DTCs are output
    • Blind spot monitor system
    		 Refer to OPERATION CHECK [09/2017 - ]
    w/ Panoramic View Monitor System: 
    • Front television camera assembly
    • Radiator grille assembly
    		 Front television camera view adjustment Panoramic view monitor system Refer to CALIBRATION [09/2017 - 05/2019]
    w/ Panoramic View Monitor System: 
    • Side television camera assembly LH
    • Outer rear view mirror assembly LH
    		 Side television camera view adjustment
    w/ Panoramic View Monitor System: 
    • Side television camera assembly RH
    • Outer rear view mirror assembly RH
    		 Side television camera view adjustment
    w/ Panoramic View Monitor System: 
    • Front television camera assembly or radiator grille assembly
    • Rear television camera assembly
    • Side television camera assembly LH or outer rear view mirror assembly LH
    • Side television camera assembly RH or outer rear view mirror assembly RH
    		 Television camera view adjustment
    Inner rear view mirror assembly Register transmitter code Garage door opener function Refer to REGISTRATION [10/2014 - ]
    • Certification ECU (smart key ECU assembly)
    • Steering lock ECU (steering lock actuator assembly)
    • ID code box (immobilizer code ECU)
    • Main body ECU (multiplex network body ECU)
    • Electrical key transmitter sub-assembly
    		 Code registration (Immobilizer system)
    • Wireless door lock control system
    • Smart Access system with push-button start
    • Immobilizer system
    • Steering lock system
    		 Refer to REGISTRATION [10/2014 - 05/2019]
    • Air conditioning amplifier assembly
    • No. 1 air conditioning radiator damper servo sub-assembly
    • No. 2 air conditioning radiator damper servo sub-assembly
    • No. 1 blower mode damper servo sub-assembly
    		 Initialization servo motor (Air conditioning system) DTCs are output Refer to INITIALIZATION [10/2014 - ]
    • Occupant detection ECU
    • Front passenger seat
    		 Zero point calibration and sensitivity check (Occupant classification system)
    • Occupant classification system
    • Passenger airbag ON/OFF indicator
    • Airbag system (Front passenger side)
    • Seat belt warning system (Front passenger)
    		 Refer to INITIALIZATION [10/2014 - ]
    • Door window regulator assembly
    • Power window regulator motor assembly
    • Door glass
    • Door glass run
    		 Initialize power window control system
    • Auto up and down function
    • Jam protection function
    • Remote control function
    • Key-linked function
    • Wireless transmitter-linked function
    • Key-off operation function
    • Catch protection function
    • Window open warning function
    		 Refer to INITIALIZATION [10/2014 - ]
    w/ Sliding Roof System: 
    • Sliding roof glass sub-assembly
    • Sliding roof drive gear sub-assembly (sliding roof ECU)
    		 Initialize sliding roof system
    • Auto operation function
    • Jam protection function
    • Key-off operation function
    • Key-linked function
    • Sliding roof open warning function
    • Wireless transmitter-linked function
    		 Refer to INITIALIZATION [10/2014 - ]
    w/ Power Back Door System: 
    1. Multiplex network door ECU
    		 Initialize power back door system Power back door system Refer to INITIALIZATION [10/2014 - 05/2019]
    w/ Power Back Door System: 
    • Multiplex network door ECU
    • Kick door control sensor*3
    		 Reset connection history There are cases where the connection history display differs from the vehicle condition Refer to DATA LIST / ACTIVE TEST [09/2017 - ]
    w/ Headlight ECU: 
    1. Headlight light control ECU sub-assembly LH
    • Synchronize the vehicle information
    • Perform headlight ECU sub-assembly LH initialization
    • Headlight leveling function
    • AFS (Adaptive front-lighting system)
    		 Refer to INITIALIZATION [09/2017 - 07/2020]
    w/ Headlight ECU: 
    1. 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

    () *1: w/ SXM System*2: The vehicle height changes because of suspension or tire replacement*3: w/ Hands Free Power Back Door

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