Mercedes-Benz GLK Owners Manual

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Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Opening/closing the garage door
Once programmed, the integrated garage door opener will assume the function of the garage door system's remote control. Please also read the operating instructions for the garage door system. ...

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 t ...