Problems with the SmartKey

See also:

Activating/deactivating MAX COOL maximum cooling
The MAX COOL function is only available in vehicles for the USA. MAX COOL is only operational when the engine is running. ► To activate: press the Ù button. The indicator lamp ...

SmartKey battery
Important safety notes WARNING Batteries contain toxic and corrosive substances. If batteries are swallowed, it can result in severe health problems. There is a risk of fatal injury. Keep batt ...

Winter operation
Please bear the following in mind At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes- Benz Center. Observe the notes in the ...