Mercedes-Benz M-Class
Mercedes-Benz M-Class

See also:
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 ...
Checking the coolant level
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
► Turn the SmartKey to position
2 in the ignition lock.
On vehicles with KEYLESS-GO, ...
Refrigerant of the air-conditioning
system
The air-conditioning system is filled with
R134a refrigerant and a special PAG
lubricant.
Never use refrigerant R 12 (CFC) or
mineral lubricants. Otherwise, you could
damage the air-condition ...
