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

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Interior / Seat / Rear Power Seat Control System(for Third Row) / System Description

SYSTEM DESCRIPTION

REAR POWER SEAT CONTROL SYSTEM DESCRIPTION

  • The rear No. 2 power seats have fold , return and jam protection functions.
  • Each rear No. 2 power seat can be operated independently.

FUNCTION OF MAIN COMPONENTS

Component

Function
  • No. 2 Seatback Frame Sub-assembly LH (Reclining Motor)
  • No. 2 Seatback Frame Sub-assembly RH (Reclining Motor)

Uses power supplied from the fold seat control ECU (LH/RH seat) to operate and fold or return the rear No. 2 seatback. Uses a built in Hall IC to detect the position of the rear No. 2 seatback.
  • No. 2 Seat Cushion Frame Sub-assembly LH (Lifter Motor)
  • No. 2 Seat Cushion Frame Sub-assembly RH (Lifter Motor)

Uses power supplied from the fold seat control ECU (LH/RH seat) to operate and fold or return the rear No. 2 seat cushion. Uses a built in Hall IC to detect the position of the rear No. 2 seat cushion.
  • Fold Seat Switch Assembly
  • No. 1 Fold Seat Switch Assembly

Outputs rear No. 2 seat fold and return operation signals to the fold seat control ECU (LH/RH seat) to perform a fold or return operation of the rear No. 2 power seat.

Fold Seat Control ECU (LH/RH seat)

Receives signals from each seat switch and operates the reclining motor and lifter motor to fold and return the rear No. 2 power seat. Sounds a buzzer if conditions for the requested operation are not met or a jam is detected.
    Parts Location
    PARTS LOCATION ILLUSTRATION *1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - P/SEAT R/R FUSE - P/SEAT R/L FUSE *2 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-DCC NO. 2 FUSE - ECU- ...

    System Diagram
    SYSTEM DIAGRAM ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Specifications: Tire information
    Typical tire symbols Full-size tire Compact spare tire Tire size DOT and Tire Identification Number (TIN) Location of treadwear indicators Tire ply composition and materials Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies in a tire. ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Dynamic Radar Cruise Control System: Software Incompatibility with Brake System Control Module Not Programmed (U031851)
    DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake actuator assembly), the forward recognition camera stores DTC U031851. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from U031851 ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0127