Mercedes-Benz GLK Owners Manual

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The first 1000 miles (1500 km)
The more you look after the engine when it is new, the more satisfied you will be with its performance in the future. Drive at varying vehicle speeds and engine speeds for the first 1000 miles ...

Setting the side air vents
► To open/close: turn thumbwheel 3 to the left or right. Side window defroster vent 1 is never completely shut, even if side air vent 2 is shut. ...

Brake fluid
WARNING Over a period of time, the brake fluid absorbs moisture from the air; this lowers its boiling point. If the boiling point of the brake fluid is too low, vapor pockets may form in th ...