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:
Vehicles with manual transmission
Shift to either first gear or reverse gear R.
Turn the SmartKey to position 0 in the ignition lock and remove it. The
immobilizer is activated.
Apply the parking brake firmly.
...
Important safety notes
WARNING
If you tow the vehicle, you must use a rigid
towing bar if:
- the engine is not running.
- there is a brake system malfunction.
- there is a malfunction in ...
Setting climate control to automatic
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and ...
