
1, 2,
3...
4ETS (Electronic Traction System) see ETS/4ETS (Electronic Trac-
tion System)
12 Vsocket
see Socket (12 V) A
ABS (Anti-lock Braking System) Display message ............................ 142
Function/notes ................................ 52
Warning lamp .................................1 58
Activating/deactivating air-recir-
culation mode ...................................... 89
ADAPTIVE BRAKE ................................. 56
Adaptive brake lights .......................... 53
AdBlue ®
Additive ......................................... 252
Display message ............................ 148
Filling capacity ............................... 252
Important safety notes .................. 251
Low outside temperatures ............. 252
Purity ............................................. 252
Topping up ..................................... 111
Additives (engine oil) ........................ 253
Adjustin gthe seat ............................... 69
AF (alternative frequency) ................ 177
Airc onditioning
Windscreen heating ......................... 88
Airf ilter(wh ite display message) .... 148
Airv ents
Important safety notes .................... 93
Rea r................................................. 94
Setting ............................................. 93
Setting the centre airv ents ............. 94
Setting the sid eairvents ................. 94
Air-conditionin gsystem
see Climate control
Airbag
Introduction ..................................... 36
PASSENGER AIR BAG OFF indica-
tor lamp .......................................... .32
Airbags
Fron tairbag (driver ,front
passenger )....................................... 37
Important safety gu idelines............. 36 Triggering ......................................... 37
Alarm
ATA (Anti-Theft Alarm system) ......... 56
Switching off (ATA) .......................... 56
Switching the function on/off
(ATA) ................................................ 56
All-whee ldrive
Transfer case ................................. 124
Approach/departurea ngle.............. 121
Aquaplaning ....................................... 117
Ashtray ............................................... 208
Assembly tool
General notes ................................ 210
Radio aerial .................................... 210
Assistance display (on-board com-
puter) .................................................. 137
Assistance menu (on-board com-
puter) .................................................. 137
ASSYST service interva ldisplay
Servic emessages .......................... 216
ATA (Anti-Theft Alarm system)
Activating/deactivatin g................... 56
Function ........................................... 56
Switching off the alarm .................... 56
Audi oAUX jack .................................. 178
AUTO lights
Displa ymessage ............................ 145
see Lights
Automatic engine start (ECO start/
sto pfunction) ...................................... 99
Automatic engine switch-off (ECO
start/sto pfunction) ............................ 98
Automatic headlamp mode ................ 75
Automatic transmission
Displa ymessage ............................ 153
Drive position (EC Ostart/stop
function) ........................................ 103
Drive programs .............................. 104
Driving tip s.................................... 103
Emergency running mod e.............. 108
Engaging drive position .................. 103
Engaging neutral ............................ 102
Engaging reverse gea r................... 102
Engaging the park position ............ 102
Important safety notes .................. 101
Kickdow n....................................... 104
Manua lshifting .............................. 106 4
Index

AdBlue
®
Genera lnotes To function properly, BlueTE
Cexhaust gas after-
treatment must be operated with the reducing
agent AdBlue ®
.
When the supply of AdBlue ®
is almost used up,
the Refill AdBlue See Owner's Manual Refill AdBlue See Owner's Manual
message is shown in the multifunction display .A
warning tonea lso sounds.
If the Refill AdBlue No start in Xkm
Refill AdBlue No start in Xkm
message is shown in the multifunction display,
you can still drive the vehicle over the distance
shown. If AdBlue ®
is not topped up, you will
subsequently be unable to startt he engine.
When you see the warning message, it is rec-
ommended that you fill the AdBlue ®
reservoir
with 10 litres of AdBlue ®
.T his ensures that the
AdBlue ®
supply will last until the next regular
service due date.
Further information about BlueTEC exhaust gas
aftertreatmen tand about AdBlue ®
can
be obtained from any Mercedes-Benz Service
Centre.
i You can also have the AdBlue ®
tank refilled
at aq ualified specialist workshop.
If the outside temperature is lower than Ò11 †,
it may be difficult to top up. If AdBlue ®
is frozen
and there is an active warning indicator, topping up may not be possible. Park the vehicle in a
warm place, e.g. in agarage, until AdBlue ®
has
become liquid again. Topping up is then possible
again. Alternatively, have the AdBlue ®
tank refil-
led at aqualified specialist workshop.
Before driving your vehicle outside Europe, have the AdBlue ®
supply checked at aqualified spe-
cialist workshop.
Further information about BlueTEC exhaust gas
aftertreatmen tand about AdBlue ®
can
be obtained from any Mercedes-Benz Service
Centre.
Important safety notes AdBlue
®
is aw ater-soluble fluid for the exhaust
ga sa ftertreatment of diese lengines. It is:
R non-toxic
R colourless and odourless
R non-flammable If you open the AdBlue
®
tank ,small amounts of
ammonia vapourm ay be released.
Ammonia vapours have apungent odoura nd are
particularly irritating to the skin, mucous mem-
branes and eyes.Y ou may experience aburning
sensation in youre yes,nose and throat. You
may also experience coughing and watery eyes.
Do not inhalea ny ammonia vapours that may be
released. Fill the AdBlue ®
tank only in well-ven-
tilated areas.
Do not swallow AdBlue ®
or let it come into con-
tact with skin, eyes or clothing. Keep AdBlue ®
awayf rom children.
If you or others come into contact with AdBlue ®
,
observe the following:
R immediately rinse AdBlue ®
off yours kin with
soap and water.
R if AdBlue ®
comes into contact with youre yes,
immediately rinse them thoroughl ywith clean
water. Seek medica lattention immediately.
R if AdBlue ®
is swallowed, immediately rinse
yourm outh out thoroughly. Drink plenty of
water. Seek medica lattention immediately.
R change immediately out of clothing that has
come into contact with AdBlue ®
.
! Only use AdBlue ®
in accordance with
ISO 22241. Do not mix any additives with
AdBlue ®
,a nd do not dilute AdBlue ®
with
water. This may destroy the BlueTEC exhaust
gas aftertreatment system.
! In order to fill the AdBlue ®
tank, the vehicle
must be parked on alevel surface. The
AdBlue ®
tank can only be filledasi ntended
with the vehicle parked on alevel surface.
Fluctuations in capacity willt hus be avoided.
Filling avehicle standing on an uneven sur-
face is not permitted. There is adanger of
overfilling, which can cause damage to Blue-
TEC exhaust gas aftertreatment components.
! Surfaces which have come into contact with
AdBlue ®
whiler efilling shouldber insed
immediately with water, or remove AdBlue ®
with amoist cloth and cold water. If AdBlue ®
has already crystallised, use asponge and
cold water to clean the area.A dBlue®
residue
crystallises after acertain amount of time and
soils the affected surfaces.
! AdBlue ®
is not afuel additive and must not
be addedtot he fuel tank. If AdBlue ®
is added Refuelling
111Driving and parking Z

X
Press the 6ora button to start dial-
ling.
or X To exit the redial memory: press the%
button. Assistance menu
Introduction In the
Assist.
Assist. menu, you have the following
options:
R Showin gthe assistance graphic
(Y page 137)
Showing the assistanc egraphic X
Press the =or; button on the steering
wheel to select the Assist.
Assist. menu.
X Press 9or: to select Assistance
Assistance
graphic
graphic.
X Press a.
The displa yisinoperative. Service menu
In the Serv.
Serv. menu, you have the following
options:
R Calling up display messages (Y page 141)
R Checking the tyre pressure electronically
(Y page 240)
R Calling up the service due date
(Y page 216)
R Checking the engine oil level (Y page 213)Settings menu
Introduction In the
Settings
Settings menu, you have the following
options:
R Changing the instrument cluster settings
(Y page 137)
R Changing the time/date settings
(Y page 138)
R Changing the light settings (Y page 138)
R Changing the vehicle settings (Y page 139)
R Changing the auxiliary heating settings
(Y page 139) R
Changing the convenience settings
(Y pag e140)
R Restorin gthe factory settings (Y page 141)
Instrumen tcluster Selecting the uni
tofmeasurement for dis-
tance
The Display unit Speed-/odometer: Display unit Speed-/odometer: func-
tion allowsy ou to choose whether certain dis-
playsa ppear in kilometres or miles in the mul-
tifunction display.
You can determine whether the multifunction
display shows certain messages in miles or kil-
ometres.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Display unit Speed-/odometer
Display unit Speed-/odometer function.
You will see the selected setting: km
kmorMiles
Miles.
X Press ato save the setting.
The selected unit of measurement for distance
applies to the following:
R digital speedometer in the Trip Tripmenu
R the total distance recorder and the trip meter
R trip computer
R current consumption and the range
R the navigation instruction sintheNavi
Navi menu
R ASSYST service interval display
Selecting permanent display You can determine whether the multifunction
displayp ermanently shows your speed or the
outside temperature.
X Press the =or; button on the steering
wheel to select the Settings
Settingsmenu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Permanent display:
Permanent display: function.
You will see the selected setting: outside
outside
temperature
temperature orDig. speedo [mph]
Dig. speedo [mph].
X Press ato save the setting.
i The speed is displayed in mph. Menus and submenus
137On-boardcomputer and displays Z

Display messages
Possible causes/consequence
sand M
MSolutions The poly-V-belt may have torn.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Check the poly-V-belt.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Wait until the display message disappears before restarting the
engine. The engine may otherwise be damaged.
X Pay attention to the coolant temperature gauge.
X Consult aqualified specialist workshop. # The battery is no longer being charged.
Aw
arning tonea lso sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R am alfunction in the electronics
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK: X Consult aqualified specialist workshop. 4
Check Check
eng.
eng.oil
oillev.
lev.
when
when next
nextrefuelling
refuelling The engine oil level has dropped to the minimum level.
Aw
arning tonea lso sounds.
X Check the oil level when next refuelling, at the latest (Y page 213).
X If necessary, top up the engine oil (Y page 213).
X Have the engine checked at aqualified specialist workshop if the
engine oil needs topping up more often than usual. 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. Display me
ssages
147On-board compute rand displays Z

Note
sono illevel Depending on your drivin
gstyle ,the vehicle
consumes up to 0.8 litres of oi lper 1,000 km.
The oi lconsumption ma ybehighe rtha nt his
when the vehicl eisnew or if yo ufrequentl ydrive
at high engine speeds.
To check the oi llev el:
R park the vehicl eonalevel surface
R the engine shoul dbeswitched off for approx-
imatel yfivem inute sifthe engine is at normal
operating temperature
R if the engine is not at normal operating tem-
perature, e.g .ifthe engine wa sonlys tarted
briefly, wait approximately 30 minute sbefore
carrying out the measurement
Checking the oil level using the oil dip-
stick X
Pull dipstick :out of the dipstick tube.
X Wipe off dipstick :.
X Slowly slide oil dipstick :into the guide tube
to the stop and take it out again after approx- imately three seconds.
If the level is between MIN mark =and MAX
mark ;,the oil level is correct.
X If the oil level has dropped to MIN mark =or
below, top up with 1.0 lofe ngine oil.
Checking the oil level using the on-
board computer X
Make sure that the key is in position 2in the
ignition lock.
X Press 9or: on the steering wheel to
select the following message: Engine oil Engine oil
level Measuring now Measurement level Measuring now Measurement
accurate only if vehicle is level accurate only if vehicle is level The measurement takes
afew seconds. You will
see one of the following messages in the multi-
function display:
R Engine oil level OK Engine oil level OK
R Add 1.1 litres eng. oil when next
Add 1.1 litres eng. oil when next
refuelling refuelling
X Top up the oil if necessary.
If the engine is at normal operating temperature and the Engine oil Reduce oil level
Engine oil Reduce oil level dis-
play appears, too much oil has been added.
X Have excess oil siphoned off.
If the Switch ignition on to check
Switch ignition on to check
engine oil level
engine oil level message appears:
X Turn the key to position 2in the ignition lock
(Y page 96).
If the Waiting period for engine oil
Waiting period for engine oil
level not observed
level not observed message appears:
X If the engine is at normal operating tem-
perature:
repeat the measurement after
approximately five minutes.
X If the engine is not at normal operating
temperature:
e.g. if the engine was only star-
ted briefly, repeat the measurement after
approximately 30 minutes.
If the Engine oil level Not when engine Engine oil level Not when engine
on
on message appears:
X Switch off the engine.
X If the engine is at normal operating tem-
perature:wait approximately five minutes
before carrying out the measurement.
X If the engine is not at normal operating
temperature:
e.g. if the engine was only star-
ted briefly, wait approximately 30 minutes
before carrying out the measurement.
If you wish to cancel the measurement ,press
the 9 or: button on the multifunction
steering wheel.
Topping up engineo il !
Use only engine oils and oil filters that are
approved for vehicles with aservice system. A
list of the engine oils and oil filters that have
been tested and approved in accordance with
Mercedes-Benz Specifications for Service
Products is available at any Mercedes-Benz
Service Centre. Engine compartment
213Maintenance and care Z

fully, and alwaysw
ipee ntire sea tsections to
avoi dleaving visible lines .Leave the sea tto
dry afterwards .Cleaning results depend on
the type of dirt and how long it has been there.
Note that regular care is essentia ltomake sure
that the appearance and comfort of the covers
are retained over time.
Cleaning the seat belts G
WARNING
Seat belts may be severely weakened if
bleached or coloured. This may lea dtothe
seat belts, for example, tearing or failing in an accident. There is an increased risk of injury,
possibly even fatal.
Never bleach or colou rseat belts.
! Do not clea
nthe seat belts using chemical
cleaning agents. Do not dry the seat belts at
temperatures above 80 †orindirect sun-
light.
X Use clean, lukewarm water and soap solution.
Cleaning the wood luggage-compart-
ment floor !
For cleanin
gand treating the wooden lug-
gage compartment floor, do not use any of the
following:
R microfibre cloth
R householdc leaning agents
R commercially available furniture polishes,
sprays or similari tems
R steam cleaners
Otherwise, the surface of the wooden luggage
compartment floor will be damaged.
! Do not apply self-adhesive films or masking
strips to the wooden luggage compartment
floor; the solvent residue and plasticisers con-
tained in them may destroy the paintwork.
Use alint-free cotton cloth to remove dust, dirt
and fingerprints. If necessary, dampen the lint-
free cotton cloth with asmall amount of clear
water.
Use wood oil recommended and approved by
Mercedes-Benz to treat and protect the wooden
luggage compartment floor. This revitalises the
wooden surface and increases the resilience of
the wood. To apply the wood oil:
X Using the sanding pad that comes with the
care set, sand the wooden surface in the
direction of the grain.
X Clean off the wood dust.
X Using acotton cloth, distribute athin layer of
wood oil evenly over the wooden surface
using asimple wiping motion .Always wipe
along the grain.
X Then, using asecond cotton cloth, apply the
remaining wood oil.
An ew protective coat forms within approx-
imately four hours.
As econd treatment with the wood oil is recom-
mended for extremely worn wooden luggage
compartment floor surfaces.
Cleaning the roof lining and carpets X
Roof lining: if it is verydirty, us easoft brush
or dry shampoo.
X Carpets: uset he carpet and textil ecleaning
agents recommended and approved by
Mercedes-Benz. Care
221Maintenanc eand care Z

vapours. Keep fuel
sout 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 area sofskin
with water and soap immediately.
R If you get fuel in youre yes, rinse them thor-
oughly with clea nwater immediately. Seek
immediate medical attention.
R If fuel is swallowed,s eek immediate medi-
cal attention. Do not induce vomiting.
R Change any clothing that has come into
contact with fuel immediately.
Tank capacity Model Total capa-
city G3
50dPROFESSIONAL Approx.
96.0 l Model Of which
reserve fuel G3
50dPROFESSIONAL Approx.
14.0 l Diesel
Fuel grade
G
WARNING
If you mix diesel fuel with petrol, the flash
point of this fuel mixture is lower than that of pure diesel fuel.W hen the engine is running,
components in the exhaust system may over-
heatu nnoticed. There is arisk of fire.
Never refue lwith petrol. Never add petrol to
diesel fuel.
! When refuelling, only use diesel fuel that
conforms to the European standard EN 590 or is of equivalent quality .Fuel that does not
conform to EN 590 can leadtoi ncreased wear
as wellasd amage to the engine and exhaust
system. !
Do not use the following:
R marine diesel
R heating oil
R bio-diesel
R vegetable oil
R petrol
R paraffin
R kerosene
Do not mix such fuels with diesel fuel and do
not use any special additives. Otherwise,
engine damage may occur.
! Vehiclesw
ith diesel particle filters: in
countries outside the EU, only use low sulphur
Euro diesel with asulphurc ontent of under
50 ppm. Otherwise, the emission control sys- tem could be damaged.
You will usually find information aboutt he fuel
quality on the pump. If you cannot find the label
on the petrol pump, ask the filling station staff.
Information on refuelling (Y page 109).
Low outside temperatures In winter months, diesel fuel with an improved
cold flow quality is available. In Europe, the
EN 590 standard defines various climate-
dependent temperature categories. Malfunc-
tions can be avoided by refuelling with diesel
fuel that corresponds to the climatic specifica-
tions outlined in EN 590. At unusually low out-
side temperatures, it is possible that the flow
characteristics of the diesel fuel could be insuf- ficient. Accordingly, diesel fuel from warmer
areas may not be suitablef or operation in colder
climatic conditions.
i Further information on country-specific fuel
properties and fuel types with low-tempera-
ture resistance can be obtained from oil com- panies, e.g. at filling stations. AdBlue
®
Important safety notes Comply with the important safety notes for ser-
vice produc tswhen handlin gAdBlue ®
(Y page 250). Service products and capacities
251Technical data Z

AdBlue
®
is aw ater-soluble fluid for the exhaust
ga sa ftertreatment of diese lengines. It is:
R non-toxic
R colourless and odourless
R non-flammable
If yo uopent he AdBlue ®
tank, small amounts of
ammoni avapour mayber eleased.
Ammonia vapour shaveap ungent odou rand are
particularly irritating to the skin, mucou smem-
branes and eyes. Yo umayexperience aburning
sensation in your eyes, nose and throat. You
ma yalsoe xperience coughing and watery eyes.
Do not inhal eany ammoni avapours thatmaybe
released .Fillt he AdBlue ®
tank onl yinwell-ven-
tilate dareas.
Lo wo utside temperatures AdBlue
®
freeze satat emperature of approx-
imatel y-11 †. The vehicl eisdelivere dfrom the
factory equipped with an AdBlue ®
preheating
system .Winter operatio ncan thu sbeguaran-
tee devenatt emperature sbelow -11 †.
Additives !
Onl
yuse 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.
Purity !
Impurities in AdBlue ®
(e.g. due to other ser-
vice 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
aftertreatments ystem
Assuring the purity of AdBlue ®
is particularly
important with regard to avoiding malfunctions
in the BlueTEC exhaust gas aftertreatments ys-
tem.
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 lon-
ger be guaranteed. Fillin
gcapacities Model Tota
lcapacity G3
50dPROFES-
SIONAL 15.0 l
Engine oil
General notes When handling engin
eoil, observe the important
safety notes on service products (Y page 250).
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 curren ttech-
nical 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 Servic eCentre. Mercedes-Benz recom-
mends that you have the oil change carried out
at aq ualified specialist workshop. Mercedes-
Benz approval is indicated on the oil container
by the inscription „MB-Freigabe“ or „MB
Approval“ and the corresponding designation,
e.g. MB-Freigabeor MB Approval 229.51.
You can call up an overview of approved engine oils on the Internet at
http://bevo.mercedes-benz.com by entering
the designation ,e.g. 229.5.
The table shows which engine oils have been
approved for your vehicle. Model MB-Freigabe or
MB Approval
G3
50dPROFESSIONAL 229.51, 229.52252
Service products and capacitiesTechnical data