Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: 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 is equipped with this system. Each seat operates independently.

FUNCTION OF MAIN COMPONENTS

Component

Function

Rear Seatback Frame Sub-assembly (Reclining Motor, Fold Motor)

Uses power supplied from the fold seat control ECU to operate the reclining motor and fold motor to recline, fold and return the rear seatback. Uses a Hall IC built into the fold motor to detect the position of the rear seatback.

Rear Power Seat Switch

  • Outputs a seatback angle adjustment signals to the fold seat control ECU to adjust the seatback reclining angle.
  • Outputs rear seat fold and return operation signals to the fold seat control ECU to perform a fold or return operation of the rear power seat.

Fold Seat Switch assembly

Outputs rear seat fold and return operation signals to the fold seat control ECU to perform a fold or return operation of the rear power seat.

Fold Seat Control ECU

Receives signals from each seat switch and operates the reclining motor and fold motor to recline and fold and return the rear power seat. Sounds a buzzer if conditions for the requested operation are not met or a jam is detected.

    Precaution
    PRECAUTION POWER FOLDING SEAT FUNCTION HANDLING PRECAUTIONS NOTICE: When a rear power seat is operating, make sure that the area around the seat is free of obstructions. When a rear power seat is ...

    Initialization
    INITIALIZATION INITIALIZATION (INITIAL POSITION MEMORIZATION) NOTICE: It is necessary to perform Initialization (initial position memorization) in the following situations. The fold seat control EC ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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