See also:

Servicing the brakes
If the red brake warning lamp lights up in the instrument cluster and you hear a warning tone while the engine is running, the brake fluid level may be too low. Observe additional warning me ...

Introduction
In the DriveAssist. menu you can:  - show the distance display  - activate/deactivate ESP®  - activate/deactivate PRE-SAFE® Brake  - activate/deactivate ATTENTION AS ...

4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are permanently driven. Together with ESP® and 4ETS, it improves the traction of your vehicle whenever a drive wheel spins due to insufficient grip. WARNING&nb ...