See also:

Cleaning the windows
WARNING Before cleaning the windshield or wiper blades, switch off the windshield wipers and remove the SmartKey from the ignition lock. On vehicles with KEYLESS-GO, press the Start/Stop b ...

2009 Mercedes-Benz CL-Class Review
Sometimes, being the only car of a particular type or price can put you in a lonely place — lonely enough that automakers usually avoid it, preferring to make their own copy of what everyone else ...

Problems with the SmartKey
Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. - ...