See also:

DISTRONIC PLUS displays in the speedometer
When DISTRONIC PLUS is activated, one or two segments 2 in the set speed range light up. For design reasons, the speed displayed in the speedometer may differ slightly from the speed set fo ...

Purity
Assuring the purity of DEF is particularly important with respect to avoiding malfunctions in the exhaust gas aftertreatment system. If DEF is pumped out of the DEF tank, e.g. during repair wo ...

Problems with the seat ventilation
The seat ventilation has switched off prematurely or cannot be switched on. The vehicle's electrical system voltage is too low because too many electrical consumers are switched on. Switch o ...