See also:

Changing the battery
You require a CR 2025 3 V cell battery. - Take the mechanical key out of the SmartKey. - Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...

Wet roads
WARNING After driving in heavy rain for some time without applying the brakes or through water deep enough to wet brake components, the first braking action may be somewhat reduced. You hav ...

SmartKey battery
Important safety notes It is advisable to have batteries replaced at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center. WARNING   Batteries contain toxic and c ...