See also:

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 ...

Deactivating DISTRONIC PLUS
There are several ways to deactivate DISTRONIC PLUS: Briefly press the cruise control lever forwards 1. or Brake, unless the vehicle is stationary. When you deactivate DISTRONIC PLUS, the ...

Brake fluid level
If you notice that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or less, check the brake system immediately for leaks. Also check the thickness of the bra ...