Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Fail-safe Chart

FAIL-SAFE CHART

If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system.

Power Steering System

Malfunction

Fail-safe Operation

EPS warning light

Buzzer

  • Torque sensor (electric power steering column sub-assembly) malfunction
  • Power steering motor (power steering ECU assembly) malfunction
  • Power steering ECU assembly malfunction

Power steering assist stops or assist amount is limited

Red or yellow

Sounds intermittently or once

  • Vehicle speed signal malfunction
  • Skid control ECU (brake actuator assembly) malfunction

Power steering assist is temporarily limited

Yellow

Sounds once

HINT:

  • If the power steering assist stops, the EPS warning light comes on (red).
  • If the amount of power assist is reduced, the EPS warning light comes on (yellow) and a vibration or sound may occur.
  • The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or being driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal when the steering wheel is not turned for approximately 10 minutes with the engine idling.
  • If the battery is not sufficiently charged or the voltage decreases temporarily, the amount of power assist will be reduced and the EPS warning light will come on. In such cases, the amount of power assist returns to normal when the battery voltage recovers.
    EPS Warning Light Circuit
    DESCRIPTION If the power steering ECU assembly detects a malfunction, the power steering ECU assembly stores a DTC and illuminates the EPS warning light. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTIC ...

    Freeze Frame Data
    FREEZE FRAME DATA FREEZE FRAME DATA NOTICE: It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measur ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Blower Unit: Components
    COMPONENTS ILLUSTRATION *1 AIR FILTER COVER PLATE *2 BLOWER ASSEMBLY *3 BLOWER MOTOR WITH FAN SUB-ASSEMBLY *4 CLEAN AIR FILTER *5 NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY *6 NO. 5 AIR DUCT SUB-ASSEMBLY *7 AIR FILTER CASE *8 AIR FILTER SUB-ASSEMBLY ● Non- ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting (ext): Rear Turn Signal Light Bulb
    ReplacementREPLACEMENT 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. REMOVE REAR LIGHT COVER Click here 2. DISCONNECT REAR COMBINATION LIGHT ASSEMBLY (a) Apply protective tape around the rear combi ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0138