See also:

Daytime running lamps
Daytime running lamps in Canada The daytime running lamps function is required by law in Canada. It cannot therefore be deactivated. Turn the light switch to or . With the engine running: d ...

Checking the battery
•► Press the or button. The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is ...

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 ...