Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Horn Circuit

NOTICE:

• Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

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• Inspect the fuses for circuits related to this system before performing the following procedure.

Engine Hood Courtesy Switch Circuit

DESCRIPTION The engine hood courtesy switch is built into the hood lock assembly. This switch turns on when the engine hood is closed and turns off when the engine hood is opened. WIRING DIAGRAM CAUT ...

Security Horn Circuit

DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the security horn a ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Automatic Transaxle System: Pressure Control Solenoid "H" Actuator Stuck Off (P28167F)
DESCRIPTION Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected. The ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical malfunctions of the shift solenoid valves, transmission valve body assembly and automat ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Tilt Position Sensor or Tilt Motor Circuit Malfunction (B2610)
DESCRIPTION The tilt motor is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and tilts the steering column up and down. The tilt position sensor (Hall IC) in the tilt motor detects the tilt angle of the steering column and sends a signal to the multiplex til ...