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Driving and operating131AdBlue
General information
The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system.
The designation of this fluid is AdBlue Ⓡ. It is a non-toxic, non-flammable,
colourless and odourless fluid which
consists of 32% urea and 68% water.
Note
AdBlue Ⓡ is a registered trademark
of the Verband der
Automobilindustrie e.V. (VDA).9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.
The typical AdBlue consumption is
approx. two litres per 1000 km, but
can also be higher depending on
driving behaviour (e.g. high load or
towing).
Level warnings
If the AdBlue level falls below a
certain value, a level warning (e.g.
"AdBlue Range: 2400 km") will be
shown in the Driver Information
Centre 3 91, located in the centre of
the instrument cluster.
Refill the tank with a volume of at least
10 litres of AdBlue as soon as
possible. Refer to " Refilling AdBlue"
below.
Driving is possible without any
restrictions.
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132Driving and operatingIf AdBlue is not refilled within a certaindistance, further level warnings are
shown in the Driver Information
Centre, depending on the current
AdBlue level.
Subsequent requests to refill AdBlue
and finally the announcement that an engine restart will be prevented are
displayed in the Driver Information
Centre.
Note
These restrictions are a legal
requirement.At an AdBlue range of 900 km, the following warning messages are
alternately displayed in the Driver
Information Centre:
● AdBlue Low Refill Now
● Engine Restart Prevented in
900 km
Additionally, control indicator Y
flashes continuously.
Engine restarts prevented
Before the prevention of an engine
restart, the following warning
messages are alternately displayed in the Driver Information Centre:
● AdBlue Empty Refill Now
● Engine Will Not Restart
These messages indicate that after
switching off the ignition, an engine
restart will be prohibited.
Additionally, control indicator Y
flashes continuously.
After the prevention of an engine
start, a warning message (e.g. "Refill
AdBlue To Start Vehicle") is displayed
in the Driver Information Centre
reminding the driver that AdBlue level
is insufficient.
To allow the engine to be restarted,
the tank should be filled with at least
10 litres of AdBlue.
High emission warningsIf the exhaust emission rises above a
certain value, warnings similar to the
range warnings as described above
will be displayed in the Driver
Information Centre.
Requests to have the exhaust system checked and finally the
announcement that an engine restart
will be prevented are displayed in the
Driver Information Centre.
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Driving and operating133Note
These restrictions are a legal
requirement.
Seek the assistance of a workshop as
soon as possible.
Refilling AdBlueCaution
Only use AdBlue that complies
with European standards
DIN 70 070 and ISO 22241-1.
Do not use additives.
Do not dilute AdBlue.
Otherwise the selective catalytic
reduction system could be
damaged.
Note
If AdBlue must be refilled at very low temperatures, the refilling of AdBlue
may not be detected by the system.
In this case, park the vehicle in a
space with a higher ambient
temperature until AdBlue is
liquefied.
Note
If engine starting is prohibited due to low AdBlue level, we recommend
refilling the tank completely or with a volume of at least ten litres of AdBlue(depending on AdBlue
consumption).
Avoid minor top-ups (e.g. less than five litres), otherwise the system
may not detect a refill.
Note
When unscrewing the protective cap
from the filler neck, ammonia fumes
may emerge. Do not inhale as the
fumes have a pungent smell. The
fumes are not harmful by inhalation.
The vehicle must be parked on a level surface.
The filler neck for AdBlue is located at
the rear bumper on the left-hand side of the vehicle.9 Danger
Vehicles with stop-start system:
The engine must be switched off
and the ignition key removed, to
avoid risk of engine being
restarted automatically by the
system.
Capacities 3 211.
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134Driving and operatingFilling station9Danger
Follow the operating and safety
instructions of the filling station
when refilling AdBlue.
1. Switch off engine and remove key
from ignition switch.
2. Disengage the cover using a suitable screwdriver and remove.
3. Unscrew protective capanticlockwise from the filler neck.
4. Fully insert the pump nozzle intothe filler neck and switch it on.
5. When refilling is complete, mount the protective cap and turn
clockwise until it engages.
6. Replace the cover by inserting the
right side first.
AdBlue canister Note
Only use the designated AdBlue
canisters for refilling, to prevent a
topping-up of too much AdBlue.
Additionally, the fumes in the tank
are captured in the canister and do
not emerge.
Note
Since AdBlue has a limited
durability, check the date of expiry
before refilling.
1. Switch off engine and remove key
from ignition switch.
2. Disengage the cover using a suitable screwdriver and remove.
3. Unscrew protective cap anticlockwise from the filler neck.
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Driving and operating135
4. Attach the adapter (located inglovebox) to the filler neck.
5. Open AdBlue canister.
6. Mount one end of the hose on the
canister and screw the other end
on the filler neck adapter.
7. Lift the canister until it is empty. 8. Unscrew the hose from the filler neck adapter.
9. Remove the adapter and return to
its container in the glovebox.
10. Mount the protective cap and turn
clockwise until it engages.
11. Replace the cover.
Note
Dispose of AdBlue canister and
hose according to environmental requirements.
Note
If an AdBlue refill is not detected,
drive continuously for 10 minutes,
keeping vehicle speed above
20 km/h.
If the AdBlue refill is detected
successfully, AdBlue level warnings
will disappear.
If the AdBlue refill is not detected
some time after running the engine,
seek the assistance of a workshop.
Note
If less than 10 litres of AdBlue have
been refilled during the last 2 years,
the remaining fluid should be
exchanged since AdBlue has a
limited durability. Seek the
assistance of a workshop.
Disregard could lead to damage to
the selective catalytic reduction
system.
Filler cap
Only use genuine filler caps. AdBlue
tank has a special filler cap.Fault
If the system detects an operating
fault, control indicator Y illuminates
together with a warning chime. Seek
the assistance of a workshop
immediately.
A corresponding message may
appear in the Driver Information
Centre 3 91.
Page 205 of 225

Service and maintenance203Engine oil viscosity
The SAE viscosity grade gives
information of the thickness of the oil.
Multigrade oil is indicated by two figures, e.g. SAE 5W-30. The first
figure, followed by a W, indicates the
low temperature viscosity and the
second figure the high temperature viscosity.
Select the appropriate viscosity grade depending on the minimum ambient
temperature 3 206.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.
Coolant and antifreeze
Use only silicate-free long life coolant (LLC) antifreeze. Consult a
workshop.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
northern countries with very low
temperatures the factory filled coolant
provides frost protection down to
approx. -37 °C. This concentrationshould be maintained all year round.
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional coolant additives will be rejected.
Brake and clutch fluidOver time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified interval.
AdBlue
Only use AdBlue to reduce the
nitrogen oxides in the exhaust
emission 3 131.
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Technical data207Engine dataSales designation2.0 CDTI2.2 CDTI2.2 CDTIEngine identifier codeB 20 DTHA 22 DMA 22 DMHNumber of cylinders444Piston displacement [cm3
]195622312231Engine power [kW]125120135at rpm375038003800Torque [Nm]400350400at rpm1750-250020002000Fuel typeDieselDieselDiesel
AdBlue 3 131.
Page 213 of 225
Technical data211Capacities
Engine oilEngineB 20 DTHA 22 DMA 22 DMHincluding filter [l]4.95.65.6between MIN and MAX [l]1.01.01.0
Fuel tank
Diesel, nominal capacity [l]65
AdBlue tank
AdBlue, nominal capacity [l]12.2