Mercedes-Benz GLC : Seats and stowing / Seats

Notes on the correct driver's seat position

WARNING Risk of accident due to adjusting the vehicle settings while the vehicle is in motion You could lose control of the vehicle in the following situations in particular: If you adjust the driver's seat, the head restraint, the steering wheel or the mirror while the vehicle is in motion If you fasten your seat belt while the vehicle is in motion Before starting the engine: In particular, adjust the driver's seat, head restraint, steering wheel and mirror, and fasten your seat belt...

Adjusting the front seat mechanically and electrically (without Seat Comfort Package)

WARNING Risk of becoming trapped if the seats are adjusted by children Children could become trapped if they adjust the seats, particularly when unattended...

Other information:

Mercedes-Benz GLC 2016-2026 Owners Manual: Restraint system functionality. Malfunctioning restraint system

Restraint system functionality When the ignition is switched on, a self-test is performed, during which the restraint system warning lamp lights up. It goes out no later than a few seconds after the vehicle is started. The components of the restraint system are then functional...

Mercedes-Benz GLC 2016-2026 Owners Manual: Installing the cargo compartment cover

..