Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: System Description

NOTICE:

• Use only the specified bulbs if replacement is necessary.
• Do not connect other lights, such as fog lights, etc. to the wire harness or trailer.
• Do not splice wires into the wire harness.
• Do not exceed the allowable rated current of the towing converter relay.
• Never disassemble or modify the parts related to the towing converter system or the vehicle.
• Make sure there are no shorts in the lighting circuit of the trailer.

HINT:

• The towing converter system has an Auto Current Cut (ACC) function to prevent the towing converter system from being affected by malfunctions in the trailer wire harness. If the current in the towing converter system circuit exceeds its rated current due to additional lights or a short, the towing converter relay will interrupt the power supply to the towing converter system.

  If the automatic current cut function operates, reset the towing converter system.

  Click here

• Make sure to turn off the vehicle lights when connecting or disconnecting the trailer connector.
• Make sure to hold the towing socket connector and trailer connector when connecting or disconnecting the connectors, so that connector force is not applied to the wire harnesses or bracket.
• Make sure to put the cap on the towing socket connector when the trailer connector is disconnected.

Parts Location

PARTS LOCATION ILLUSTRATION *1 TOWING CONVERTER RELAY *2 TOWING SOCKET *3 ENGINE ROOM RELAY BLOCK - SEMICONDUCTOR POWER INTEGRATION ECU - TOWING FUSE *4 INSTRUMENT PANEL JUNCTION B ...

System Diagram

SYSTEM DIAGRAM TOWING CONVERTER SYSTEM ...

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