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:
Deactivating/activating ESP®
Observe the "Important safety notes"
section.
WARNING
ESP® should not be deactivated during
normal driving other than in the
circumstances described below. Disabling
the s ...
Problems with the seat ventilation
If one or all of the indicator lamps in the seat
ventilation button are flashing, the seat
ventilation has switched off automatically.
The vehicle's electrical system voltage is too
low because ...
Calibrating the compass
Make sure that there is
sufficient space for
you to drive in a circle without impeding the
remaining traffic.
In order to calibrate the compass correctly,
observe the following points:
• ca ...