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 ...

Cargo & Towing
When properly equipped with the optional trailer hitch, the GLK350 is rated to tow up to 3,500 pounds. ...

Changing the picture format
Select Source in the AUX menu and press the button on the remote control to confirm. Select Display Aux or Disk Drive Aux and press the button to confirm. Select Auto16:9 optimized, 4:3 o ...