Problems with the SmartKey

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Useful information
This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are ...

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 ...

BAS (Brake Assist System)
Observe the "Important safety notes" section  . WARNING If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of an accident ...