See also:

General information
If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged. ► Check the battery ...

Creating new contacts/changing contacts
In certain countries, this function stops being available from a vehicle speed of more than approximately 3 mph (5 km/h). As soon as the speed falls below approximately 2 mph (3 km/h), the f ...

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