See also:

Cleaning the seat belts
– Use clean, lukewarm water and soap solution. Do not clean the seat belts using chemical cleaning agents. Do not dry the seat belts by warming them above 176 °F (80 °C) or placing them ...

Displaying the digital speedometer oroutside temperature
If you have selected the digital speedometer for the status bar, the outside temperature is displayed here. ► Press the button on the steering wheel to select the standard display. ...

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