Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 202

Depressurising the fuel tank (plug-in hybrid with
petrol engine)
Pull switch 1 once briefly.
#
Indicator lamp 2 will flash and the
wait Depressurising fuel tank
appear on the driver's display.
When the fuel tank is depressurised, indicator
lamp 2 will light up continuously.
The Fuel tank is depressurised Ready for
refuelling
display and the fuel filler flap will open auto-
matically.
%
Depressurising the fuel tank may take several
minutes.
The fuel tank can be depressurised only if the
conditions described above are fulfilled. Other-
wise, drive the vehicle at least 0.5 km and repeat
the process.
%
In the following situations, there is a malfunc-
tion:
Indicator lamp
R
goes out.
The yellow ; engine diagnostics warn-
R
ing lamp lights up.
* NOTE Damage to the fuel filler flap when
opening it
Please
message will
If an attempt is made to open a fuel filler flap
that is not unlocked, the fuel filler flap or the
opening mechanism may be damaged.
message will appear on the driver's
2 flashes initially and then
Driving and parking 199
Only refuel when the fuel filler flap has
#
opened automatically.
®
AdBlue (vehicles with a diesel engine only)
®
▌Notes on topping up AdBlue
®
AdBlue is a water-soluble fluid for the NOx
exhaust gas aftertreatment of diesel engines. In
order for the exhaust gas aftertreatment to func-
®
tion properly, only use AdBlue
with ISO 22241.
®
AdBlue is characterised by the following:
non-toxic
R
colourless and odourless
R
non-flammable
R
®
If you open the AdBlue tank, small amounts of
ammonia vapour may be released. Only fill the
®
AdBlue tank in well-ventilated areas.
®
Do not let AdBlue come into contact with skin,
®
eyes or clothes. Keep AdBlue away from chil-
dren.
in accordance