Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: On-vehicle Inspection

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Vehicle Exterior / Lighting (ext) / Stop Light Switch / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Disconnect the A55 stop light switch assembly connector.

*a

Front view of wire harness connector

(to Stop Light Switch Assembly)

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A55-1 (B) - A55-3 (GND)

Always

11 to 14 V

A55-5 (B) - A55-3 (GND)

Engine switch on (IG)

11 to 14 V

Standard Resistance:

Tester Connection

Condition

Specified Condition

A55-3 (GND) - Body ground

Always

Below 1 Ω

If the result is not as specified, repair or replace the wire harness or connector.

(c) Reconnect the A55 stop light switch assembly connector.

*a

Component with harness connected

(Stop Light Switch Assembly)

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A55-2 (L) - A55-3 (GND)

Brake pedal not depressed

Below 1 V

A55-2 (L) - A55-3 (GND)

Brake pedal depressed

11 to 14 V

A55-4 (L) - A55-3 (GND)

Engine switch on (IG), brake pedal not depressed

11 to 14 V

A55-4 (L) - A55-3 (GND)

Engine switch on (IG), brake pedal depressed

Below 1 V

If the result is not as specified, replace the stop light switch assembly.

    Components
    COMPONENTS ILLUSTRATION *1 STOP LIGHT SWITCH ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - ...

    Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during stop ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Sfi System: Actuator Supply Voltage "A" Stuck On (P06579E)
    MONITOR DESCRIPTION The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage is usually 0 V when the engine switch is turned off. If the output voltage is 7 V or higher when the engine switch is turned off, the ECM ...

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Audio And Visual System (for 8 Inch Display): Poor Sound Quality in All Modes (Low Volume)
    PROCEDURE 1. CHECK AUDIO SETTINGS (a) Set treble, middle and bass to the initial values and check that the sound is normal. OK: The sound returns to normal. HINT: Sound quality adjustment measures vary according to the type of amplifier. OK END NG 2. COMPARE ...

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

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

    © 2026 Copyright www.lexusrx.net
    0.1221