Problems with the SmartKey

Doors

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    Nuts & Bolts
    Overall reliability for the current C-Class has been average. In crash tests by the Insurance Institute for Highway Safety, the car earned the top score of Good in front, side, rear and roof-crush ...

    Resetting the side windows
    You must reset each side window if a side window can no longer be closed fully. Close all the doors. Turn the SmartKey to position 1 or 2 in the ignition lock. Pull the corresponding switch on ...

    Safety
    The CLS has not been crash-tested by either the federal government or the Insurance Institute for Highway Safety. It comes equipped with seat-mounted side airbags for front passengers and side-c ...