2009 Lexus LS 600hLFACTORY OEM SERVICE PROCEDURE

Repair Instruction: Initialization: Description

PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED / RECONNECTED

Necessary Procedures Procedure Details Effects / Inoperative Functions When Necessary Procedures are not Performed Notes
Navigation system (for DVD) initialization After turning the power switch ON (IG), insert the map disc. Navigation system (for DVD) If the map disc is inside when disconnecting the cable from the battery terminal, this procedure is not necessary
Correction of steering angle neutral point Fully turn the steering wheel to the right and left. Parking guidance function -
Rear curtain position reset operation
  1. Turn the power switch ON (IG).
  2. Push the front or rear switch's rear door sunshade switch twice.
 Rear curtain -
Reset power trunk lid system Completely close the luggage compartment door by hand once. Power trunk lid function It is not necessary to perform initialization if the negative (-) battery cable is disconnected while the luggage compartment door is closed.
NOTE:

After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

Replacement Part Necessary Procedures Effects / Inoperative Functions When Necessary Procedures are not Performed Notes
Hybrid vehicle control ECU
  1. Perform clutch oil pressure value learning initialization
  2. Initialize radar cruise control system
  3. Register VIN
  • Large shift shock
  • Radar cruise control system
  • DTC P0630-804 is output
  • Perform initialization with power switch ON (READY), shift lever on P and vehicle stopped
  • During learning operation, "T/M LEARNING" appears on meter's multi-information display
Hybrid vehicle transmission assembly Perform clutch oil pressure value learning initialization Large shift shock
  • Perform initialization with power switch ON (READY), shift lever on P and vehicle stopped
  • During learning operation, "T/M LEARNING" appears on meter's multi-information display
  • Suspension control ECU
  • Height control sensor
 Vehicle height offset calibration Vehicle height sensor data may be affected due to installation position, or vehicle height recognition may be erroneous May also occur when vehicle height is uneven due to deterioration over time
Tire pressure warning ECU
  1. Register transmitter IDs
  2. Initialize tire pressure warning system
  • When DTC detection conditions of "transmitter ID not received" DTC is met, TPMS indicator blinks for 1 minute, and then illuminates
  • Tire pressure monitoring function
 -
Tire pressure warning valve and transmitter
  1. Register transmitter IDs
  2. Initialize tire pressure warning system
  • When DTC detection conditions of "transmitter ID not received" DTC is met, TPMS indicator blinks for 1 minute, and then illuminates
  • Tire pressure monitoring function of replaced wheel
 Even if only one wheel is replaced, IDs for all 5 wheels must be registered
Skid control ECU
  • Initialize linear solenoid valve and perform calibration
  • Perform yaw rate and acceleration sensor zero point calibration
  • Brake warning light / yellow (minor malfunction) illumination
  • Brake warning light / red (malfunction)
  • ABS warning light illumination
  • VSC warning display of multi-information display
  • Master warning light illumination
 -
Brake actuator
  1. Bleed air
  2. Clear stored value of linear solenoid valve and calibration data
  3. Initialize linear solenoid valve and perform calibration
 Brake does not operate properly -
  • Brake pedal stroke sensor
  • Brake pedal
  1. Inspect and adjust brake pedal height
  2. Adjust brake pedal stroke sensor
  3. Clear stored value of linear solenoid valve and calibration data
  4. Initialize linear solenoid valve and perform calibration
  • Brake warning light / yellow (minor malfunction) illumination
  • Brake warning light / red (malfunction)
  • ABS warning light illumination
  • Master warning light illumination
 -
Yaw rate and acceleration sensor
  1. Clear zero point calibration data
  2. Perform yaw rate and acceleration sensor zero point calibration
  • Brake warning light / yellow (minor malfunction) illumination
  • Brake warning light / red (malfunction)
  • ABS warning light illumination
  • VSC warning display of multi-information display
  • Master warning light illumination
  • VSC control is prohibited or operation is incorrect
  • VGRS system
 -
Electric parking brake ECU
  • Reset memory
  • Acquire tension sensor zero point
 Electric parking brake does not operate normally -
Electric parking brake actuator
  • Reset memory
  • Acquire tension sensor zero point
  • Parking brake bedding
  • Electric parking brake does not operate normally
  • Parking brake performance may not be normal
 -
  • Rear disc
  • Parking brake shoe
 Parking brake bedding Parking brake performance may not be normal -
  • Steering control ECU
  • Steering column
  • Steering intermediate shaft
 Actuator angle neutral point calibration and initialization Steering wheel off-center -
Power steering gear assembly
  • Actuator angle neutral point calibration and initialization
  • Rotation angle sensor value initialization
  • Torque sensor zero point calibration
  • VGRS system calibration procedure
  • Steering wheel off-center
  • Difference in amount of steering assist between left and right
 -
Power steering ECU
  • Rotation angle sensor value initialization
  • Torque sensor zero point calibration
  • Steering wheel off-center
  • Difference in amount of steering assist between left and right
 -
Occupant classification ECU
  • Perform zero point calibration
  • Registration ECU data
  • Occupant classification system
  • Passenger airbag ON/OFF indicator
  • Airbag system (Front passenger side)
  • Seat belt warning system (Front passenger side)
 -
  • ID code box
  • Steering lock ECU
  • ECM
  • Key
  • Certification ECU
 Registration
  • Wireless door lock operation
  • Entry operation
  • Engine starting
  • Steering unlock
 -
Front millimeter wave radar sensor Adjust front millimeter wave radar sensor DTC C1A11 or C1A14 is output -
Steering angle sensor connector Correction of steering angle neutral point Parking guidance function -
Television camera Television camera optical axis
(Camera position setting)		 Vehicle width extension lines and expected course are deviated -
Parking assist ECU
  • Correction of steering angle neutral point
  • Store left and right maximum steering angle
  • Television camera optical axis

    (Camera position setting)
  • Vehicle width extension lines and expected course are deviated
  • Parking assist function
 -
Mayday ECU
  • Mayday ECU initialization
  • Mayday ECU registration / enrollment
 LEXUS link system -
Mayday battery
  • Mayday battery registration
  • Mayday battery confirmation
 DTC 6-1 remains output -
Power window regulator motor
(All doors)		 Initialize power window control system
  • AUTO UP / DOWN
  • Jam protection
  • Key-off
 When the battery is replaced, it is not necessary to initialize the power window regulator motor
Inner rear view mirror
  • Compass zone setting
  • Compass calibration
 Direction is not displayed correctly -
  • Front power seat switch

    (Seat ECU)

  • Front seat adjuster
  • Position control ECU
  • Rear seat adjuster
 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
 -
  • RR MPX-B1 fuse
  • Luggage closer motor assembly
  • Luggage door closer assembly
 Reset power trunk lid system Power trunk lid function -
  • Rear door ECU LH
  • Rear door ECU RH
 Rear curtain position reset operation Rear curtain -
  • Sliding roof drive gear

    (Sliding roof ECU)

  • Sliding roof housing
  • Sliding roof glass
 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

    (Driver's door only)

  • Entry lock switch-linked operation
 -
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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