See also:

Checking tire pressure manually
To determine and set the correct tire pressure, proceed as follows: Remove the valve cap of the tire that is to be checked. Press the tire pressure gauge securely onto the valve. Read the tire ...

EBD (electronic brake force distribution)
Observe the "Important safety notes" section. EBD monitors and controls the brake pressure on the rear wheels to improve driving stability while braking. WARNING If EBD has malfu ...

Roadside Assistance button
  Press and hold Roadside Assistance button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in Roadside Assistance but ...