LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2019 >> RX 350L FWD >> Repair and Diagnosis >> General Information >> OEM General Information >> Introduction - General Information >> Repair Instruction >> Initialization [12/2017 - 08/2019] >> Initialization [12/2017 - 08/2019]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Initialization [12/2017 - 08/2019]

  1. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED 
    Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
    Memorize steering angle neutral point LKA/LDA system Refer to INITIALIZATION [09/2015 - 08/2019]
    Pre-collision system
    Intelligent clearance sonar system*1
    Parking assist monitor system Refer to INITIALIZATION [09/2015 - 08/2019]
    Panoramic view monitor system Refer to INITIALIZATION [09/2015 - 08/2019]
    Lighting system (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [09/2015 - 08/2019]
    AFS (Adaptive Front-lighting System) Refer to INITIALIZATION [09/2015 - 08/2019]
    Initialize back door lock Power door lock control system Refer to INITIALIZATION [09/2015 - ]
    Reset back door close position Power back door system Refer to INITIALIZATION [09/2015 - 08/2019]

    *1: When performing learning using the Techstream.

    Refer to CALIBRATION [12/2017 - 08/2019]

    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, make sure to wait at least 90 seconds before disconnecting the cable from the negative (-) battery terminal. (for Audio and Visual System)
    • 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, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal. (for Navigation System)
  2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED 
    Replacement Part Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
    ECM Vehicle Identification Number (VIN) registration MIL comes on Refer to REGISTRATION [09/2015 - ]
    ECU communication ID registration (Immobilizer system) Engine start function Refer to REGISTRATION [09/2015 - 08/2019]
    • 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 assembly (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, etc.
    • Engine start function, etc.
    		 Refer to INITIALIZATION [09/2015 - 08/2019]
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly
    • Dynamic radar cruise control system
    • Pre-collision system
    • Forward recognition camera system
    • LKA/LDA system
    		 Refer to ADJUSTMENT [09/2015 - 08/2019]
    • Forward recognition camera
    • Windshield glass
    		 Adjust forward recognition camera
    • Dynamic radar cruise control system
    • LKA/LDA system
    • Pre-collision system
    • Forward recognition camera system
    • Automatic high beam system
    		 Refer to ADJUSTMENT [09/2015 - 08/2019]
    Automatic transaxle assembly Perform the following procedures in the order shown:
    1. Input transaxle compensation code into ECM
    2. Perform road test to allow ECM to learn
    • Large shift shock
    • Deterioration of fuel efficiency
    		 Refer to INITIALIZATION [08/2016 - 08/2019] for U881E Initialization
    Refer to REGISTRATION [09/2015 - ] for U881E Registration
    Refer to INITIALIZATION [09/2015 - 08/2019] for U881F Initialization
    Refer to REGISTRATION [09/2015 - ] for U881F Registration
    • Valve body assembly
    • Shift solenoid valve SL3, SL4 and/or SL5
    		 Perform the following procedures in the order shown:
    1. Reset transaxle compensation code
    2. Perform road test to allow ECM to learn
    Shift solenoid valve SL1 and/or SL2 Perform road test to allow ECM to learn
    ECM
    (If possible, read the transaxle compensation code from the previous ECM)    		 Perform the following procedures in the order shown:
    1. Transfer transaxle compensation code
    2. Perform road test to allow ECM to learn
    ECM
    (If impossible, read the transaxle compensation code from the previous ECM)    		 Perform the following procedures in the order shown:
    1. Reset transaxle compensation code
    2. Perform road test to allow ECM to learn
    4WD ECU assembly*4 Clear zero point calibration data Dynamic torque control AWD system Refer to CALIBRATION [09/2015 - ]
    • Acceleration sensor (airbag sensor assembly)*1
    • Acceleration sensor (yaw rate sensor assembly)*2
    • Clear zero point calibration data
    • Perform yaw rate and acceleration sensor zero point calibration
    Absorber Control ECU Registration of Vehicle Identification Information.
    • Interrupts damping force control
    • DTCs are stored
    		 Refer to TEST MODE PROCEDURE [09/2015 - ]
    • Tire pressure warning ECU and receiver (Electrical key and tire pressure monitoring system receiver assembly)
    • Tire pressure warning valve and transmitter
    • Register Transmitter ID
    • Initialize tire pressure warning system
    • 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 - 08/2019] for Registration
    Refer to INITIALIZATION [09/2015 - 08/2019] for Initialization
    Skid control ECU (brake actuator assembly) Operate the electric parking brake switch assembly Parking brake indicator light (red) blinks when the engine switch is first turned on (IG) Refer to PRECAUTION [08/2016 - 08/2019]
    Skid control ECU (brake actuator assembly) Perform yaw rate and acceleration sensor zero point calibration and store system information.
    • VSC disabled or malfunctioning
    • DTCs are output
    • Slip indicator light illuminated
    • ABS warning light illuminated
    		 Refer to CALIBRATION [09/2015 - 08/2019]
    • Yaw rate and acceleration sensor (airbag sensor assembly)*1
    • Yaw rate and acceleration sensor*2
    		 Perform the following procedures in the order shown:
    1. Clearing zero point calibration data and system information.
    2. Perform yaw rate and acceleration sensor zero point calibration and store system information.
    Power steering ECU assembly
    • Perform torque sensor zero point calibration
    • Assist map writing
    • DTCs are output
    • Steering effort different between turning steering wheel left and right
    • EPS warning light illuminates
    		 Refer to CALIBRATION [09/2015 - ]
    Electric power steering column sub-assembly Perform torque sensor zero point calibration
    DCM (telematics transceiver) DCM activation Safety connect system Refer to DCM ACTIVATION [12/2017 - 08/2019]
    Perform code registration (Immobilizer system) Telematics System Refer to REGISTRATION [09/2015 - 08/2019]
    BUB (Back-up battery) Perform backup battery replacement reset Safety connect system Refer to INITIALIZATION [12/2017 - 08/2019]
    Steering sensor Steering angle neutral point (Initialize intelligent clearance sonar system)
    • Intelligent clearance sonar system
    • Intuitive parking assist system (w/ Intelligent Clearance Sonar System)
    		 Refer to CALIBRATION [12/2017 - 08/2019]
    • Suspension, tires, etc.*3
    • Front bumper assembly
    • Rear bumper assembly
    • Ultrasonic sensor
    • Ultrasonic sensor detection angle
    • Ultrasonic sensor detection angle registration
    Clearance warning ECU assembly
    • Ultrasonic sensor detection angle
    • Steering angle neutral point
    • Registration of bumper type
    • Ultrasonic sensor detection angle registration
    Steering sensor
    • Steering angle neutral point (Initialize parking assist monitor system)
    • Steering angle setting
    		 Parking assist monitor system Refer to INITIALIZATION [09/2015 - 08/2019] for Initialization
    Refer to CALIBRATION [12/2017 - 08/2019] for Calibration
    Suspension, tires, etc.*3 Rear television camera assembly optical axis (Back camera position setting)
    Rear television camera assembly
    • Parking assist monitor system initialization
    • Rear television camera assembly optical axis (Back camera position setting)
    Steering sensor Steering angle neutral point (Initialize panoramic view monitor system) Panoramic view monitor system Refer to INITIALIZATION [09/2015 - 08/2019] for Initialization
    Refer to CALIBRATION [12/2017 - 08/2019] for Calibration
    Parking assist ECU
    • Parking assist ECU initialization
    • Adjust steering angle
    Rear television camera assembly Rear television camera view adjustment
    • Front television camera assembly
    • Front bumper assembly
    • Radiator grille
    		 Front television camera view adjustment
    • Side television camera assembly LH
    • Outer rear view mirror assembly LH
    • Side television camera assembly RH
    • Outer rear view mirror assembly RH
    		 Side television camera view adjustment
    • Front television camera assembly, front bumper assembly or radiator grille
    • 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
    Suspension, tires, etc.*3
    • Parking assist ECU initialization
    • Adjust steering angle
    Blind spot monitor sensor Blind Spot Monitor Beam Axis Adjustment
    • Intelligent clearance sonar system
    • Blind spot monitor system
    		 Refer to OPERATION CHECK [12/2017 - 08/2019]
    • Inner rear view mirror assembly
    		 Re-registration of codes in the garage door opener system
    • Register transmitter code
    • Rolling code systems
    		 Garage door opener system Refer to REGISTRATION [09/2015 - ]
    • Certification ECU (smart key ECU assembly)
    • ID code box (immobilizer code ECU)
    • Steering lock ECU (steering lock actuator or upper bracket assembly)
    • Electrical key transmitter sub-assembly
    • ECM
    • Main body ECU (multiplex network body ECU)
    		 Perform code registration (Immobilizer system)
    • Wireless door lock control system
    • Smart access system with push-button start
    • Engine start function
    • Steering lock system
    		 Refer to REGISTRATION [09/2015 - 08/2019]
    • Occupant detection ECU
    • Front passenger seat
    		 Zero point calibration (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 [09/2015 - ]
    • Position control ECU and switch assembly LH
    • Front seatback frame sub-assembly LH
    • Front seat adjuster assembly LH
    		 Initialize position control ECU Front power seat control system (w/ Memory) Refer to REGISTRATION [09/2015 - ]
    for Rear Power Seat Control System (for Second Row) 
    • Fold seat control ECU (for LH side)
    • Fold seat control ECU (for RH side)
    • Rear seatback frame sub-assembly LH
    • Rear seatback frame sub-assembly RH
    		 Initial position memorization Rear power seat function (for Second Row) Refer to INITIALIZATION [09/2015 - ]
    for Rear Power Seat Control System (for Third Row) 
    • Fold seat control ECU (LH seat)
    • Fold seat control ECU (RH seat)
    • No. 2 seatback frame sub-assembly LH
    • No. 2 seatback frame sub-assembly RH
    • No. 2 seat cushion frame sub-assembly LH
    • No. 2 seat cushion frame sub-assembly RH
    		 Initial position memorization Rear power seat function (for Third Row) Refer to INITIALIZATION [12/2017 - ]
    • Air conditioning amplifier assembly
    • No. 1 air conditioning radiator damper servo sub-assembly
    • No. 1 blower damper servo sub-assembly
    • No. 2 air conditioning radiator damper servo sub-assembly
    • No. 3 air conditioning radiator damper servo sub-assembly
    • Rear No. 1 cooling unit damper servo sub-assembly*5
    • Rear No. 2 cooling unit damper servo sub-assembly*5
    		 Initialization servo motor (Air conditioning system) DTCs are output Refer to INITIALIZATION [09/2015 - ]
    • Door window regulator assembly
    • Power window regulator motor sub-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 [09/2015 - ]
    • Sliding roof ECU (sliding roof drive gear sub-assembly)
    • Sliding roof glass sub-assembly
    • Sliding roof drive cable sub-assembly
    		 Initialize sliding roof system
    • Auto operation function
    • Jam protection function
    • Key-off operation function
    • Key-linked function
    • Wireless transmitter-linked function
    • Sliding roof open warning function
    		 Refer to INITIALIZATION [09/2015 - ]
    • Sliding roof ECU (sliding roof drive gear assembly)
    • Slide roof housing panel
    • Slide roof rail sub-assembly
    • Sliding roof glass sub-assembly
    		 Initialize panoramic moon roof system (for Sliding Roof)
    • Auto operation function
    • Jam protection function
    • Key-off operation function
    • Key-linked function
    • Wireless transmitter linked function
    • Sliding roof open warning function
    		 Refer to INITIALIZATION [09/2015 - ]
    • Roof sunshade ECU (sliding roof drive gear assembly)
    • Sunshade trim sub-assembly
    • Slide roof rail sub-assembly
    		 Initialize panoramic moon roof system (for Roof Sunshade)
    • Auto operation function
    • Jam protection function
    • Key-off operation function
    Multiplex network door ECU Reset Back Door Close Position Power back door system Refer to INITIALIZATION [09/2015 - 08/2019]
    Headlight ECU sub-assembly LH
    • Synchronize vehicle information
    • Initialize headlight ECU sub-assembly LH
    • Automatic headlight beam level control system
    • AFS (Adaptive front-lighting system)
    		 Refer to INITIALIZATION [09/2015 - 08/2019]
    Rear height control sensor sub-assembly RH Initialize headlight ECU sub-assembly LH
    Suspension, tires, etc.*3

    *1: w/ Optitron Meter Type*2: w/ TFT Meter Type*3: The vehicle height changes because of suspension or tire replacement*4: When the 4WD ECU assembly is replaced with a new one, calibration is unnecessary.*5: w/ Rear Air Conditioning System

scientia non olet · About LEMON Manuals