
R
Displaying the coolant temperature (PLUG-
IN HYBRID vehicles) (Y page 327)
R Displaying the AdBlue ®
level and range
(Y page 327) (BlueTEC vehicles only)
Displaying the AdBlue ®
level and range The
AdBlue
AdBlue menu is only available in BlueTEC
vehicles.
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Service
Servicemenu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the AdBlue
AdBlue
submenu.
X Press ato confirm your selection.
The range and AdBlue ®
level appear in a bar
graph in the multifunction display.
Observe the information and notes on "Refu- elling" (Y page 207).
Displaying the coolant temperature The
Coolant
Coolant menu is only available in PLUG-
IN HYBRID vehicles.
Observe the notes on coolant temperature
(Y page 313).
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Coolant Coolant
submenu.
X Press ato confirm your selection.
The coolant temperature is shown in a bar
display. Settings menu
Introduction Depending on the equipment fitted in the
vehicle, you have the following options in the
Settings Settings menu:
R Changing assistance settings
(Y page 327)
R Changing HYBRID settings (PLUG-IN
HYBRID vehicles) (Y page 329)
R Changing head-up display settings
(Y page 330)
R Changing the light settings (Y page 331)
R Changing the instrument cluster settings
(Y page 332)
R Changing the vehicle settings
(Y page 333)
R Restoring the factory settings
(Y page 334)
Assistance submenu Traffic Sign Assist
You can activate or deactivate the warning
function of Traffic Sign Assist in the
Traffic Traffic
Sign Assist
Sign Assist menu. When the function is
activated, detected traffic signs and informa-
tion appear in the multifunction display for
five seconds.
X Press òon the steering wheel to open
the menu list.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu. Menus and submenus
327On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions 8
Reserve fuel level Reserve fuel level The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel level
drops into the reserve range.
X Refuel at the nearest filling station. C C There is very little fuel in the fuel tank.
The auxiliary heating cannot be operated.
X Refuel at the nearest filling station without fail. ¸
Replace Replace
air
aircleaner
cleaner Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X Consult a qualified specialist workshop. !
Clean Clean
the
thefuel
fuel fil‐
fil‐
ter
ter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X Consult a qualified specialist workshop. Refill AdBlue See Refill AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
level has fallen below the reserve range. A warning
tone also sounds.
X Refill AdBlue ®
as soon as possible (Y page 207).Refill AdBlue No
Refill AdBlue No
start in ... mi start in ... mi
The AdBlue
®
level is only sufficient for the indicated distance. A
warning tone also sounds.
X Refill AdBlue ®
immediately (Y page 207).
i If you drive the vehicle faster than 15 km/h the
Refill
Refill
AdBlue
AdBlue No
Nostart
start in
in...
... mi
mimessage goes out after approx-
imately one minute. Refill
Refill
AdBlue
AdBlueEng.
Eng.
start not possible
start not possible The AdBlue
®
tank is empty. A warning tone also sounds. You can
no longer start the engine.
X Add at least 3.5 l of AdBlue ®
(Y page 207).
X Turn the ignition on for approximately one minute.
The system requires approximately one minute after refilling to
detect the change in the AdBlue ®
level.
X Start the engine. Check AdBlue See
Check AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Consult a qualified specialist workshop. 356
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Eng.
Eng.
start
start not
notpos‐
pos‐
sible in ... mi
sible in ... mi The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Consult a qualified specialist workshop immediately. Eng.
Eng.
start
start not
notpos‐
pos‐
sible sible The AdBlue
®
system is malfunctioning. A warning tone also
sounds. You can no longer start the engine.
X Consult a qualified specialist workshop immediately. Hybrid drive system
Display messages
Possible causes/consequences and
M MSolutions d
Vehicle is opera‐ Vehicle is opera‐
tional Switch off tional Switch off
the ignition the ignition
before exiting before exiting PLUG-IN HYBRID vehicles:
You are exiting the vehicle when it is in a ready-to-drive state. The
READY indicator in the multifunction display is on. A warning tone also sounds.
If you leave the vehicle:
X Safeguard the vehicle against rolling away (Y page 219).
X Switch off the ignition and remove the key.
If you do not leave the vehicle: X Switch off the electrical consumers, e.g. automatic climate con-
trol, seat heating.
Please note the following: the electrical consumers are supplied by
the 12 V battery. If the vehicle is left in a ready-to-drive state for an extended period, it will switch off once the 12 V battery is almostempty. It will then only be possible to start the vehicle using a
second battery (jump-starting). Change Change
the
thecurrent
current
drive program
drive program
before changing before changing
the operating the operating
mode modeor Exit manual
Exit manual
drive program M
drive program M
before changing before changing
the operating mode the operating mode PLUG-IN HYBRID vehicles:
You have attempted to change the operating mode in the auto-
matic drive program
S(Sport), S+(Sport Plus) or in the manual
drive program M.
X Activate drive program C(Comfort) or E(Economy)
(Y page 295).
X Select the preferred operating mode HYBRID,E-MODE,E-SAVE
or CHARGE (Ypage 290). Display
messages
357On-board computer and displays Z

H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner.
Service products include the following:
R fuels
R exhaust gas aftertreatment additives, e.g.
AdBlue ®
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windscreen washer fluid
R climate control system refrigerant
Components and service products must be
matched. Only use products recommended
by Mercedes-Benz. Damage which is caused
by the use of products which have not been
recommended is not covered by the
Mercedes-Benz warranty or goodwill ges-
tures. They are listed in this Mercedes-Benz
Owner's Manual in the appropriate section.
You can identify service products approved
by Mercedes-Benz by the following inscrip-
tions on the container:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB-Approval (e.g. MB-Approval 229.51)
Other designations or recommendations indi- cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
Other identifications, for example:
R 0 W-30
R 5 W-30
R 5 W-40
Further information can be obtained from any
Mercedes-Benz Service Centre or on the
Internet at http://bevo.mercedes-benz.com. Fuel
Important safety notes G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. G
WARNING
Fuels are poisonous and hazardous to health. There is a danger of injury.
Do not swallow fuel or let it come into contact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of the reach of chil-
dren.
If you or others come into contact with fuel,
observe the following:
R Wash the fuel off any affected areas of skin
with water and soap immediately.
R If you get fuel in your eyes, rinse them thor-
oughly with clean water immediately. Seek immediate medical attention.
R If fuel is swallowed, seek immediate medi-
cal attention. Do not induce vomiting.
R Change any clothing that has come into
contact with fuel immediately. Service products and capacities
481Technical data Z

i
Further information on country-specific
fuel properties and fuel types with low-tem-
perature resistance can be obtained from
oil companies, e.g. at filling stations.
Fuel consumption information H
Environmental note
CO 2(carbon dioxide) is the gas which scien-
tists believe to be principally responsible for
global warming (the greenhouse effect). Your
vehicle's CO 2emissions are directly related to
fuel consumption and therefore depend on:
R efficient use of the fuel by the engine
R driving style
R other non-technical factors, such as envi-
ronmental influences, road conditions or
traffic flow
You can minimise your vehicle's CO 2emis-
sions by driving carefully and having it serv-
iced regularly.
The vehicle will use more fuel than usual in the following situations:
R at very low outside temperatures
R in urban traffic
R on short journeys
R in mountainous terrain
R when towing a trailer
i Only for certain countries: you can find
the current consumption and emission val-
ues of your vehicle in the COC documents
(EU CERTIFICATE OF CONFORMITY). These documents are delivered with your vehicle.
The consumption figures were, in each
case, based on the currently applicable ver- sion:
R for vehicles that comply with standards
up to and including the EURO 4 standard,
in accordance with EU Directive
80/1268/EEC
R for vehicles that comply with or exceed
the EURO 5 standard, in accordance with Regulation (EC) No. 715/2007 Deviations from these values may occur
under normal operating conditions. AdBlue
®
Important safety notes AdBlue
®
is a water-soluble fluid for the
exhaust gas aftertreatment of diesel engines. It is:
R non-toxic
R colourless and odourless
R non-flammable
If you open the AdBlue ®
tank, small amounts
of ammonia vapour may be released.
Ammonia vapours have a pungent odour and
are particularly irritating to the skin, to
mucous membranes and to the eyes. You may experience a burning sensation in your eyes,
nose and throat. You may also experience
coughing and watery eyes.
Do not inhale any ammonia vapours that may
be released. Only fill the AdBlue ®
tank in well-
ventilated areas.
Low outside temperatures AdBlue
®
freezes at a temperature of approx-
imately -11 †. The vehicle is delivered from
the factory equipped with an AdBlue ®
pre-
heating system. Winter operation can thus be
guaranteed even at temperatures below
-11 †.
Additives !
Only use AdBlue ®
in accordance with ISO
22241. Do not use additives with AdBlue ®
and do not dilute AdBlue ®
with water. This
may destroy the BlueTEC exhaust gas after-
treatment system. 484
Service products and capacitiesTechnical data

Purity
!
Impurities in AdBlue ®
(e.g. due to other
service products, cleaning agents or dust)
lead to:
R increased emission values
R damage to the catalytic converter
R engine damage
R malfunctions in the BlueTEC ®
exhaust
gas aftertreatment system
Assuring the purity of AdBlue ®
is particularly
important with respect to avoiding malfunc-
tions in the BlueTEC exhaust gas aftertreat-
ment system.
If AdBlue ®
is pumped out of the AdBlue ®
tank,
e.g. during repair work, do not use this fluid to refill the tank. The purity of the fluid can no
longer be guaranteed.
Capacities Model Total capacity
All models
27.0 l
Engine oil
General notes When handling engine oil, observe the impor-
tant safety notes on service products
(Y page 480).
The quality of the engine oil is decisive for the function and service life of an engine. After
extensive tests, Mercedes-Benz approves engine oils that correspond to the current
technical standard.
Therefore, only Mercedes-Benz approved
engine oils may be used in Mercedes-Benz
engines.
Further information on tested and approved
engine oils can be obtained from any
Mercedes-Benz Service Centre. Mercedes-
Benz recommends that you have the oil
change carried out at a qualified specialist
workshop. Mercedes-Benz approval is indica-
ted on the oil container by the inscription
"MB-Freigabe" or "MB-Approval" and the cor- responding designation, e.g. MB-Freigabe or
MB-Approval 229.51.
You can call up an overview of approved
engine oils on the Internet at
http://bevo.mercedes-benz.com by enter-
ing the designation, e.g. 229.5.
The table shows which engine oils have been
approved for your vehicle.
Petrol engines: in certain countries, differ-
ent engine oils can be used, provided that the
maintenance intervals are reduced. For more
information, please contact a qualified spe-
cialist workshop. Petrol engines MB-Freigabe
or MB-
Approval All models
229.5
Diesel engines MB-Freigabe
or MB-
Approval All models
228.51,
229.31,
229.51, 229.52 Service products and capacities
485Technical data Z