Keyless Entry System: General Description
- Antenna and receiver are incorporated in the ETACS-ECU.
- ID code can be registered by using scan tool MB991958 (MUT-III sub assembly).
- Transmitter is a key holder type, which incorporates lock button, unlock button, trunk button and panic button < Vehicles with panic alarm system >.
- When the transmitter unlock button is pressed once, the driver's door will be unlocked. If the button is pressed twice, all the doors will be unlocked. The adjustment function also allows you to open all the doors by pressing the unlock button only once. For further details on using the multi-center display (middle grade type) to adjust the unlock operation, refer to ON-VEHICLE SERVICE .
- When the transmitter is operated, the answerback function will work as follows:
- The answerback operation can be altered as follows:
NOTE: Enabling/disabling the hazard warning light flashing, the horn sounding in accordance with the answerback function. For further details on using the transmitter to adjust answerback, see KEYLESS ENTRY SYSTEM DIAGNOSIS . For further details on using the multi-center display (middle grade type) to adjust answerback, refer to ON-VEHICLE SERVICE .
- If none of the doors is opened or the ignition key is not inserted in the ignition switch within 30 seconds after the doors are unlocked using the transmitter, the ETACS-ECU will relock the doors automatically. This is called "Timer lock function." This timer lock function prevents accidental unlocking of doors. The adjustment function allows you to change the timer lock period from 30 seconds (default setting) to 60, 120 or 180 seconds. For further details on using the multi-center display (middle grade type) to adjust the timer lock period, refer to
ON-VEHICLE SERVICE
. NOTE: The timer lock period begins when the doors are unlocked, and ends when the doors is relocked automatically.