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Home >> Lexus >> 2002 >> LX 470 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System >> Trouble Shooting >> Pre-Check >> Anti-Theft System

Anti-Theft System

The system sounds the horns and flashes the headlights and the taillights for approximately 1 minute when the system is set to the anti-theft mode and any of the following conditions are met:

At the same time the system locks all doors (if all doors are not locked at once, the system repeats door locking operation every 0.55 seconds during the 1 minute alarm time).

There are 2 modes in this system, which are active mode and passive mode. All initial setting is performed in active mode. It can be switched to passive mode by specified operation. See PASSIVE MODE CHANGING METHOD .

The 4 conditions in this system are:

  1. Disarming Condition

    • When the alarming function does not operate.
    • When anti-theft function is not performed.
  2. Disarming Preparation Condition

    • Time until transferring to disarming condition.
    • Anti-theft function is not performed.
  3. Arming Condition

    When anti-theft function is possible.
  4. Alarming Condition

    Once theft is detected, light and sound are used to inform people around the vehicle.
    • Alarming method is horn, security horn, headlight and taillight.
    • Alarming time is 60 seconds.
    • Alarming output is a continuous 0.25 seconds when ON and 0.25 seconds when OFF.
    In the arming condition when either of the doors are unlocked and with no key in the key cylinder, a force lock signal is output.