See also:

Switching on DISTRONIC PLUS, storing the current speed and maintaining it
Important safety notes WARNING The vehicle can be braked when DISTRONIC PLUS is activated. For this reason, deactivate DISTRONIC PLUS if the vehicle is to be set in motion by other means ( ...

Changing the battery
You require a CR 2025 3 V cell battery. Take the mechanical key out of the SmartKey. Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...

BAS (Brake Assist System)
Observe the "Important safety notes" section BAS operates in emergency braking situations. If you depress the brake pedal quickly, BAS automatically boosts the braking force, thus s ...