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:
Superlative comfort whatever the conditions
The welcoming interior with its top-quality materials provides passengers
with that feel-good atmosphere as only Mercedes knows how, with more than ample
space for up to seven passengers. The GL-C ...
Adjusting the seats electrically
1 Head restraint height
2 Seat cushion angle
3 Seat height
4 Seat fore-and-aft adjustment
5 Backrest angle
Vehicles with memory function:
if PRE-SAFE
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Function buttons
The COMAND function buttons allow you to
select a main function directly.
1 Function button for roller sunblind
2 Function button for radio and CD/DVD or SD card
3 Back button
4 Lumbar s ...