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 work, it must not be returned to the tank. The purity of the fluid can no longer be guaranteed.
Impurities in DEF (e.g. due to other
service products, cleaning agents or dust)
lead to:
• increased emission values
• damage to the catalytic converter
• engine damage
• malfunctions in the BlueTEC exhaust gas aftertreatment system
See also:
Releasing the electric parking brake
automatically
The electric parking brake is released
automatically when the following conditions
are simultaneously fulfilled:
• the engine is running.
• the automatic transmission is in position D or R.
...
Activating video DVD mode
Insert a video DVD.
The Rear Seat Entertainment System loads
the disc.
If disc mode was the last mode selected, it
will now be active.
If it was not, switch on video DVD mode as
described in ...