Theft deterrent locking systems
Immobilizer
The immobilizer prevents your vehicle from being started without the correct SmartKey.
When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be started by anyone with a valid SmartKey that is left inside the vehicle.
- To activate with the SmartKey: remove the SmartKey from the ignition lock.
- To activate with KEYLESS-GO: switch the ignition off and open the driver's door.
- To deactivate: switch on the ignition.
The immobilizer is always
deactivated
when you start the engine.
In the event that the engine cannot be started when the starter battery is fully charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz Center or call 1-800-FOR-MERCedes (in USA) or 1-800-387-0100 (in Canada).
ATA (Anti-Theft Alarm system)
A visual and audible alarm is triggered if the
alarm system is armed and you open:
- a door
- the vehicle with the mechanical key
- the tailgate
- the hood
The alarm is not switched off, even if you close the open door that has triggered it, for example.
If the alarm stays on for more
than 30
seconds, the emergency call system
mbrace (USA only) or TELE AID (Canada
only) initiates a call to the Customer
Assistance Center automatically. The
emergency call system initiates the call
provided that:
- you have subscribed to the mbrace/TELE AID service.
- the mbrace/TELE AID service has been activated properly.
- the required mobile phone, power supply and GPS are available.
- To arm: lock the vehicle with the SmartKey or KEYLESS-GO.
Indicator lamp 1 flashes. The alarm system is armed after approximately 15 seconds.
- To deactivate: unlock the vehicle with the SmartKey or KEYLESS-GO.
- To stop the alarm using the SmartKey: insert the SmartKey into the ignition lock.
The alarm is switched off.
or
- Press the 
or
button on the
SmartKey.
The alarm is switched off.
- To stop the alarm using KEYLESS-GO: grasp the outside door handle. The SmartKey must be outside the vehicle.
The alarm is switched off.
or
- Press the Start/Stop button on the
dashboard. The SmartKey must be inside
the vehicle.
The alarm is switched off.
See also:
Off-road driving systems
4MATIC (permanent four-wheel drive)
If you fail to adapt your driving style, 4MATIC
can neither reduce the risk of accident nor
override the laws of physics. 4MATIC cannot
take account of road, we ...
Service products and capacities
Important safety notes
Service products include the following:
- fuels (e.g. gasoline, diesel)
- additives for exhaust gas aftertreatment (DEF)
- lubricants (e.g. engine oil, transmission oil)
- ...
Important safety notes
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
...