See also:

Remote vehicle locking
If you forget to lock your vehicle but are no longer in the vicinity of the vehicle, it can be locked for you by the Mercedes-Benz Customer Assistance Center. The vehicle can be locked remotely ...

High-beam spot lamp (vehicles with halogen daytime running lamps)
Switch off the lights. Open the hood. Turn housing cover 1 counter-clockwise and pull it out. Turn bulb holder 2 counter-clockwise and pull it out. Take the bulb out of bulb holder 2. ...

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 ...