Mercedes-Benz GLC : Anti-theft protection / Function of the immobilizer

The immobilizer prevents your vehicle from being started without the correct SmartKey.

The immobilizer is automatically activated when the ignition is switched off and deactivated when the ignition is switched on.

When leaving the vehicle, always take the Smart‐ Key with you and lock the vehicle. Anyone can start the engine if a valid SmartKey has been left inside the vehicle.

In the event the engine cannot be started (yet the vehicle’s battery is charged), the system is not operational. Contact an authorized Mercedes-Benz Center or call 1-800-FOR-MERCedes (in the USA) or 1-800-387-0100 (in Canada).

    Anti-theft protection

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    ATA (anti-theft alarm system)

    Function of the ATA system If the ATA system is armed, a visual and audible alarm is triggered in the following situations: When a door is opened When the tailgate is opened When the hood is opened When the interior motion sensor is triggered When the tow-away alarm is triggered The ATA system is armed automatically after approximately ten seconds in the following situations: After locking the vehicle with the SmartKey After locking the vehicle using KEYLESS-GO Indicator lamp flashes when the ATA system is armed...

    Other information:

    Mercedes-Benz GLC 2016-2025 Owners Manual: Notes on regularly inspecting wheels and tires


    WARNING Risk of injury through damaged tires Damaged tires can cause tire pressure loss. Check the tires regularly for signs of damage and replace any damaged tires immediately. WARNING Risk of hydroplaning due to insufficient tire tread Insufficient tire tread will result in reduced tire grip...

    Mercedes-Benz GLC 2016-2025 Owners Manual: Protective capacity of the airbags


    Depending on the accident situation, an airbag may supplement the protection offered by a correctly fastened seat belt. WARNING Risk of injury or death due to an incorrect seat position If you deviate from the correct seat position, the airbag cannot perform its intended protective function...

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