See also:

Deactivating DISTRONIC PLUS
WARNING The DISTRONIC PLUS switches off and releases the brakes when the vehicle decelerates below the minimum speed of 20 mph (30 km/h) by operation of the system unless the DISTRONIC PLUS ...

Please bear the following in mind
For safety reasons, Mercedes-Benz recommends that you only use Tires and wheels which have been approved by Mercedes-Benz specifically for your vehicle. These tires have been specially a ...

Storing the current speed or calling upthe last stored speed
WARNING   The set speed stored in memory should only be set again if prevailing road conditions and legal speed limits permit. Possible acceleration or deceleration differences arising ...