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Home >> Lexus >> 2012 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Wireless Door Lock Control System (Diagnostics - Introduction) >> Wireless Door Lock Control System >> System Description >> System Description

System Description

  1. WIRELESS DOOR LOCK CONTROL SYSTEM 

    The wireless door lock control system functions to lock and unlock all the doors from a distance. The system is controlled by a hand-held transmitter which sends radio waves to the door control receiver. The main body ECU RH performs an ID code identification process and engages the door lock control.

  2. FUNCTION OF MAIN COMPONENTS 
    Component Function
    Door control transmitter
    • Has LOCK, UNLOCK, LUGGAGE OPEN, and PANIC switches.
    • Transmits weak radio waves (recognition codes and function codes) to the door control receiver.
    • Illuminates the indicator light (LED) during transmission.
    Door control receiver Receives weak radio waves from the door control transmitter and sends them to the certification ECU.
    • Front door courtesy light switch
    • Rear door courtesy light switch
    • Luggage compartment door courtesy light switch
    		 Turns on when a door is opened and turns off when it is closed. Outputs door status codes (open or closed) to the main body ECU RH.
    Door lock position switch Transmits the door lock positions of each door to the main body ECU RH.
    Wireless door lock buzzer Emits beep (answer back) when doors are locked or unlocked, or luggage compartment door is opened by wireless operation.
    Certification ECU Sends wireless door lock control signals in response to the code data from the door control receiver and signals from each ECU.
  3. SYSTEM FUNCTION 

    The door control transmitter has LOCK, UNLOCK, LUGGAGE OPEN, and PANIC switches. Operating these switches activates each function.

    The wireless door lock control system has the following functions:

    HINT: 

    The following functions' default settings are ON. Part of these functions can be customized. Refer to CUSTOMIZE PARAMETERS .

    Function Operation
    All door lock Pressing the LOCK switch locks all doors.
    All door unlock Pressing the UNLOCK switch twice within 3 seconds unlocks all the doors after deriver's the door is unlocked.
    Automatic lock If none of the doors is opened within 30 seconds after they are unlocked by the wireless door lock control, all the doors will lock again automatically.
    Luggage compartment door open Pressing the LUGGAGE OPEN switch of the transmitter for longer than 0.8 seconds opens the luggage compartment door.
    Answer back
    • When the doors are locked by wireless operation, the hazard warning lights flash once and the wireless door lock buzzer sounds once.
    • When the doors are unlocked by wireless operation, the hazard warning lights flash twice and the wireless door lock buzzer sounds twice.
    • When the luggage compartment door is opened by wireless operation, the wireless door lock buzzer sounds for 0.5 seconds.
    Panic alarm Pressing the PANIC switch of the transmitter for longer than about 0.8 seconds causes the following alarms to activate:
    • Sounds the horn and security horn.
    • Flashes the hazard lights, headlights, and taillights.
    • Illuminates the front interior light (when the switch is in the DOOR position).
    Power window and sliding roof* open Pressing the UNLOCK switch for 2.4 seconds or more opens all power windows and sliding roof*.
    Illuminated Entry When all the doors are locked, pressing the UNLOCK switch causes the interior light to come on simultaneously with the unlock operation.
    Memory Call This function operates the memory system in accordance with the key ID.

    *: with sliding roof

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