Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Initialization

• The fold seat control ECU has been replaced with a new one.
• Initialization Cancel (Initial Position Reset) has been performed.
• The cable was disconnected from the negative (-) battery terminal when a rear power seat was being operated.

HINT:

• Initialization can only be performed using the rear power seat switch of the rear power seat to be initialized. If the fold seat switch assembly is operated before initialization has been completed, a buzzer will sound continuously.
• If initialization has not been completed, the rear power seat can only be reclined using the rear power seat switch.
• The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH.

• The fold seat control ECU has been replaced with a used one.
• The rear seatback has been moved with the fold seat control ECU removed.
• The position of the rear seatback is abnormal due to the seat being disassembled or parts of the seat being replaced.

• Initialization has been completed.
• The rear power seat switch and fold seat switch assembly are not being operated.
• The vehicle is stopped.

  Engine Switch State	Condition
  Engine switch on (IG)	Shift lever in P, stop light switch assembly on or parking brake applied
  	Vehicle speed below 5 km/h (3.1 mph)
  Engine switch off	-

• The back door is open.

System Description

SYSTEM DESCRIPTION REAR POWER SEAT CONTROL SYSTEM DESCRIPTION The rear power seats have the following functions: reclining, fold and return, and jam protection. Both the left and right rear seat ...

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Knock Sensor: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during knock control sensor removal/installation are shown below. Necessary Procedures After Parts Removed/Inst ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Cylinder Head: Inspection
INSPECTION CAUTION / NOTICE / HINT HINT: Use the same procedure for bank 1 and bank 2. The following procedure is for bank 2. PROCEDURE 1. INSPECT CYLINDER HEAD LH (a) Using a precision straightedge and feeler gauge, check the surfaces which contact the cylinder block sub-assembly and manifo ...