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:
Entering a destination from the list of
last destinations
To activate navigation mode: press the
function button once or twice.
To show the menu: press
the COMAND
controller.
Select Destination in the navigation
system menu bar by turning t ...
Starting procedure with the SmartKey
To start the engine using the SmartKey instead of KEYLESS-GO, pull the Start/
Stop button out of the ignition lock.
X Turn the SmartKey to position 3 in the ignition lock () and release
it as ...
Center console, lower section
Stowage compartment Ashtray Cigarette lighter Power socket
Selector lever
Cup holder
Stowage compartment
Audio/COMAND controller
Selects the drive program
...