See also:

Checking the coolant level
Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. Turn the SmartKey to position 2 in the ignition lock. On vehicles with KEYLESS-GO, press ...

Safety
The GLK350 sports all the active safety systems you'd expect in a modern mom's car (especially a Mercedes): six airbags - including dual-stage driver and front passenger airbags and side curtain a ...

Low-beam headlamps (halogen headlamps)
Low-beam headlamps (halogen headlamps) Switch off the lights. Open the hood. Turn housing cover 1 counter-clockwise and pull it out. Turn bulb holder 2 counter-clockwise and pull it out. ...