See also:

Locking and unlocking centrally
The SmartKey centrally locks/unlocks: the doors the tailgate the fuel filler flap 1 Locks the vehicle 2 Opens/closes the tailgate 3 Unlocks the vehicle When unlocking, the turn sign ...

High outside temperatures
If DEF heats up to over 122 °F (50 °C) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...

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 ...