See also:

Additives
Only use DEF in accordance with ISO 22241. Do not use additives with DEF and do not dilute DEF with water. This may destroy the BlueTEC exhaust gas aftertreatment system. ...

Other status indicators of the navigation system
O: you have reached the destination or an intermediate destination. New route... or Calculating route...: a new route is being calculated. Off Map or Off road: the vehicle position is outside t ...

Service messages
Information on the type of service and service intervals (see separate Service Booklet). You can obtain further information from an authorized Mercedes-Benz Center or at http://www.mbusa.com (U ...