Mercedes-Benz S-Class 2020, Owner'S Manual

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Opening the AdBlue ® filler cap
#
Press on the back area of fuel filler flap 1 .
#
Turn AdBlue
®
filler cap 2 anti-clockwise and
remove it.
%
You can also store the AdBlue ® filler cap in
the fuel filler cap holder in the fuel filler flap
hinge arm.
Top up AdBlue ®
Mercedes-Benz recommends topping up
AdBlue
®
at a filling pump. If no AdBlue
®
filling
pump is available, you can also top up AdBlue ®
using a canister.
#
Screw on the fastener of AdBlue
®
refill canis‐
ter 4 .
#
Screw disposable hose 3 onto the opening
of AdBlue
®
refill canister 4 until hand-tight.
#
Screw disposable hose 3 onto the filler
neck of the vehicle until hand-tight.
#
Lift up and tip AdBlue
®
refill canister 4 .
The filling process stops when the AdBlue
®
tank is completely full.
AdBlue
®
refill canister 4 can be removed
when it has been only partially emptied.
#
Unscrew and close disposable hose 3 and
AdBlue
®
refill canister 4 in reverse order.
#
Replace AdBlue
®
filler cap 2 and turn it
clockwise until it audibly engages.
#
Close fuel filler flap 1 .
#
Switch on the ignition for at least 60 sec‐
onds.
% If the engine could not be started due to the
AdBlue
®
tank being empty, it can take up to
60 seconds for the top up to be detected.
#
Start the vehicle.
222 Driving and parking