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 ...

Activating/deactivating climate control
Important information WARNING When the climate control system is deactivated, the outside air supply and circulation are also deactivated. Only choose this setting for a short time. Otherw ...

Heavy and light loads
WARNING Depressing the brake pedal constantly results in excessive and premature wear to the brake pads. It may also cause the brakes to overheat, seriously impairing their effectiveness. ...