Contents: Anti-theft alarm ↡ Anti-tow device ↡ Device for protection against…↡ Start interlock device ↡
Anti-theft system component layout diagram
1 - Hood switch sensor; 2 - Interior volume/tow protection switch sensor; 3 - Tailgate switch sensor; 4 - Door lock switch sensor; 5 - Two-tone horn; 6 - General Activity Module (AAM); 7 - Anti-theft alarm siren
Anti-theft alarm
The layout of the main components of the anti-theft system is shown in the illustration. The anti-theft system is activated approximately 10 seconds after the car is locked using the remote control and is accompanied by the control LED on the console section of the instrument panel. In the event of unauthorized entry into the car, the system activates the alarm siren and turn signals in intermittent mode (with double the blinking frequency). The siren switches off automatically after 30 seconds, and the direction indicators after 4 minutes.
Note: Closing an unlocked door does not disable the anti-theft alarm.
Unlocking the doors using the remote control automatically disables the anti-theft alarm.
Note: When the driver's door is opened with the key, the anti-theft alarm is activated and can only be deactivated using the remote control or by turning the key in the ignition switch to position 1.
The alarm is triggered when an attempt is made to unlock any of the car doors (including tailgate), when trying to open the hood, change the position of the car, or when breaking any of the windows.
Anti-tow device
If the device is equipped accordingly, activation of the device triggers the anti-theft alarm when attempting to tow the vehicle. A description of the rules for activating and deactivating the device is provided in Section Interior controls and equipment.
Device for protection against unauthorized entry into the passenger compartment
If equipped accordingly, the device is activated to trigger the anti-theft alarm system when an unauthorized entry into the vehicle's interior is attempted. The device's operation is based on ultrasonic volume sensors installed inside the interior.
The device is activated approximately 60 seconds after the vehicle is locked using the remote control of the single lock.
Breaking the glass and putting your hands inside the car will trigger the anti-theft alarm.
A description of the rules for activating and deactivating the device is provided in Section Interior controls and equipment.
Start interlock device
The device is activated automatically when the key is removed from the ignition switch.
(Original material on the website: «mercedesman»)
To disable the device, simply insert the key equipped with the appropriate microchip into the ignition switch and turn it to position 2.
If the engine does not start and the odometer display alternately shows the messages "START" and "ERROR", then there is a malfunction in the starter interlock device and the vehicle should be taken to a Mercedes-Benz service station to have the malfunction rectified.