See also:

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 ...

Important safety notes
WARNING On slippery road surfaces, never downshift in order to obtain braking action. This could result in drive wheel slip and reduced vehicle control. Your vehicle's ABS will not prevent ...

M-Class in the Market
It's a bitter pill for a reviewer to swallow when you see a test car do so many things so right, yet fall short in a few key areas. Most shoppers — even most car reviewers — won't get to spend as ...