See also:

Important safety notes
Have the batteries changed at a qualified specialist workshop. WARNING Batteries contain toxic substances. Swallowing batteries can lead to serious health issues or death. Keep batteries out ...

Switching wavebands
See "Switching wavebands" in the radio mode section. ...

Vehicle remote opening
If you have unintentionally locked your vehicle (e.g. the SmartKey is still in the vehicle) and a replacement SmartKey is not available, the vehicle can be opened by a Mercedes-Benz Customer A ...