Anti-theft systems
Immobiliser
The immobiliser prevents your vehicle from being started without the correct key.
Activating the immobiliser
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With the key: remove the key from the ignition lock.
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With KEYLESS GO*: press the KEYLESS GO button on the dashboard.
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The engine switches off.
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Deactivating the immobiliser
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With the key: turn the key to position 2 in the ignition lock.
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With KEYLESS GO*: press the KEYLESS GO button on the dashboard twice without depressing the brake.
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The immobiliser is always deactivated when you start the engine.
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ATA* (anti-theft alarm system)
A visual and audible alarm is triggered if the alarm system is primed and you open:
The alarm is not switched off even if you close an open door again.
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 | Indicator lamp |
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To prime: lock the vehicle using the key. On vehicles with KEYLESS GO*, the alarm system is primed via the sensor surface on the exterior door handle.
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Indicator lamp flashes. The alarm system is primed after approximately 30 seconds.
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To deactivate: unlock the vehicle using the key. On vehicles with KEYLESS GO*, you can also unlock the vehicle by grasping the door handle.
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You can assign the following functions to the programmable button in the centre console more:
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Switching off the alarm
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With the key: insert the key into the ignition lock.
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The alarm is switched off.
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or |
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Press the 
or  button on the key.
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The alarm is switched off.
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With KEYLESS GO*: grasp the door handle. The key must be outside the vehicle.
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The alarm is switched off.
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or |
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Press the KEYLESS GO* button on the dashboard. The key must be inside the vehicle.
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The alarm is switched off.
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Tow-away protection*
An audible and
visual alarm is triggered if your vehicle's angle of inclination is altered
while tow-away protection is primed. This happens if the vehicle is jacked up
on one side, for example.
To prevent a false alarm,
deactivate tow-away protection manually if your vehicle:
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is being
transported
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is being loaded,
e.g. onto a ferry or car transporter
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is being parked on
a movable surface, e.g. split-level garages
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When you unlock
your vehicle using the key or KEYLESS GO*, tow-away protection is
automatically deactivated. Tow-away protection remains deactivated until you
unlock and lock the vehicle again.
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To
activate/deactivate: more
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Interior motion sensor*
If the interior motion sensor is primed, a visual and audible alarm is triggered if movement is detected in the vehicle interior while the vehicle is locked. This occurs, for example, if someone breaks the side windows of your vehicle or reaches into the vehicle's interior.
To prevent a false alarm, deactivate the interior motion sensor if you lock your vehicle and
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Make sure that:
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the side windows are closed
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the sliding/tilting sunroof is closed.
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there are no objects, e.g. mascots, hanging on the rear-view mirror or on the grasp handles on the roof trim.
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This will prevent false alarms.
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To activate/deactivate: more.
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The interior motion sensor remains deactivated until you unlock and lock the vehicle again.
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