Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) When a malfunction occurs in the lane control system, a message will be displayed on the multi-information display and, depending on the malfunction, functions of the lane control system will be disabled.

Warning Message

Cause

Fail-safe Operation

Conditions to Return to Normal Condition

Lane Departure Alert Function

Steering Assist Function

Lane Centering Function

Vehicle Sway Warning Function

X: Control is suspended

LTA Malfunction Visit Your Dealer

Lane control system is malfunctioning

HINT:

Click here

X

X

X

X

After system returns to normal, engine switch is turned off and then to on (IG) or LTA main switch is turned off and then to on.

Front Camera Unavailable

Forward recognition camera temperature out of operating range

X

X

X

X

Forward recognition camera temperature returns to normal

Abnormal forward recognition camera voltage

X

X

X

X

Forward recognition camera voltage returns to normal

Forward recognition camera is temporarily unavailable (forward recognition camera recognition stopped)

X

X

X

X

The conditions which prevent the forward recognition camera from performing recognition return to normal.

Front Camera Unavailable See Owner's Manual

  • Area of windshield glass in front of forward recognition camera is dirty or fogged up
  • Lens of forward recognition camera is dirty or fogged up

X

X

X

X

Forward recognition camera or area of windshield glass in front of forward recognition camera is cleaned

LTA Unavailable

Sensor other than forward recognition camera sensor is temporarily unavailable

HINT:

Click here

X

X

X

X

Temporarily unavailable sensor becomes available

    Data List / Active Test
    DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa ...

    Diagnostic Trouble Code Chart
    DIAGNOSTIC TROUBLE CODE CHART Lane Control System DTC No. Detection Item Link C1A7496 Steering Vibrator Component Internal Failure U010087 Lost Communication with ECM/PCM "A" M ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Steering System: Assist Map Number Mismatch (C1582)
    DESCRIPTION When an incorrect ECM, main body ECU (multiplex network body ECU) or skid control ECU (brake actuator assembly) is installed after the assist map has been written to the power steering ECU assembly, DTC C1582 is stored because the information stored in the power steering ECU assembly doe ...

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Electric Parking Brake System: Supply Voltage Circuit IG Open (C123A14)
    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C123A14 Supply Voltage Circuit IG Open Diagnosis Condition: Engine switch on (IG) Malfunction Status: When the ECM is communicating via CAN communication, IG power is not input to the skid c ...

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

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

    © 2026 Copyright www.lexusrx.net
    0.0115