Anti-Theft Systems: Description

NOTE: This article also applies to Lexus LX470. Refer to Land Cruiser, unless otherwise indicated.

WARNING: Deactivate air bag system before performing any service operation. See AIR BAG RESTRAINT SYSTEMS article. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy.

Anti-theft system is designed to sound horns and flash headlights and taillights for one minute if any side door or rear (luggage compartment) door is opened without using ignition key or keyless entry system remote transmitter, hood is opened, or battery is disconnected and reconnected when vehicle is locked. Anti-theft system will also lock any door not previously locked.

Anti-theft system consists of standard horns, anti-theft system horn, hood courtesy switch, anti-theft system Electronic Control Unit (ECU), SECURITY indicator light, ignition switch with key unlock warning switch, door lock assemblies with door unlock detection switches and door lock motors, door courtesy switches, door key lock and unlock switches and a rear door key lock and unlock switch. See Fig 1.

Fig 1: Locating Anti-Theft System Components