Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Seat Belt Tension Reducer System

Parts Location

PARTS LOCATION

ILLUSTRATION

*A

w/ Seat Position Memory System

-

-

*1

FRONT SEAT INNER BELT ASSEMBLY LH

*2

FRONT SEAT INNER BELT ASSEMBLY RH

*3

FRONT SEAT OUTER BELT ASSEMBLY LH

*4

FRONT SEAT OUTER BELT ASSEMBLY RH

*5

POSITION CONTROL ECU AND SWITCH ASSEMBLY LH

*6

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

- ECU-IG1 NO. 4 FUSE

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

System Name

See Procedure

Lane Control System

Pre-collision System

Intelligent Clearance Sonar System

Parking Assist Monitor System

Panoramic View Monitor System

Lighting System (w/ Automatic Headlight Beam Level Control System)

Power Door Lock Control System

Power Back Door System (w/ Outside Door Control Switch)

System Diagram

SYSTEM DIAGRAM

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 probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Seat Belt Tension Reducer System

Symptom

Suspected Area

Link

Driver seat belt tension reducer does not operate

Wire harness or connector

-

Front seat inner belt assembly LH

Front seat outer belt assembly LH

Position control ECU and switch assembly LH*

-

Front passenger seat belt tension reducer does not operate

Wire harness or connector

-

Front seat inner belt assembly RH

Front seat outer belt assembly RH

  • *: w/ Seat Position Memory System
    Installation
    INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL OUTER BELT ANCHOR BRACKET SUB-AS ...

    Seat Belt Warning System
    ...

    Other materials:

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    INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL WASHER NOZZLE SUB-ASSEMBLY (a) Connect a new washer nozzle sub-assembly to the washer hose. (b) Engage the 2 claws as indicated by t ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Sfi System: ECM Power Source Circuit
    DESCRIPTION When the engine switch is turned on (IG), the battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes a current to flow to the coil of the semiconductor pwr integration ECU (EFI-MAIN relay), closing the contacts and supplying ...

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

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

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