Page 225 of 337
Ins
tallth e co ver caps of the securing thre ad aTer
re moving thero of luggage rack.
If yo u ha veinstalled a rear lug gage rack on theta il-
ga te,th e additional weight will restrict the assis-
ta nce o.ered bythe pneumatic springs when you
open theta ilgate. You will then need more forc eto
open theta ilgate. Atlow outside temp eratures
below freezing point, you should pr ovide additional
support forth eta ilgate aTer opening it in order to
pr ev ent it from lo wering unintentionall y. 222
222
Tr
anspo rting
Page 226 of 337

N
N
o
ot
tes on maint
es on maint enance
enance
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmentally
pollution from disposal not in an environ-
mentally responsible manner If,
for operating reasons, individual mainte-
nance workis car ried out under your own
direction, the environmental pr otection
re qu irements must be obser ved. When dispos-
ing of operating 0uids, e.g. engine oil, the legal
re qu irements must be obser ved. This also
a.ects all parts that ha vecome into contact
with operating 0uids, e.g. /lters. #
Dispose of em pty con tainers, cleaning
clo ths and care products in an environ-
mentally responsible manner. #
Follow the inst ructions for use of care
products. #
Do not allow the engine torun longer
th an necessary when stationar y.When
working on theve hicle, comply with all
saf etyre gulations, such as the operating inst ruc-
tions, regulations concerning hazardous materials,
environmental pr otection measures, worksaf ety
and accident pr evention regulations.
Yo u must secure theve hicle on jack stands of suf-
fi cient load capacity if workis being car ried out
underneath theve hicle.
Please also referto the no tes about quali/ed spe-
cialist workshops (/ page 24).
The scope and regularity of the inspection and
maintenance workprimarily depend on the oTen
diverse operating conditions.
Yo u can obtain fur ther information concerning the
servicing of your vehicle from a quali/ed specialist
wo rkshop, e.g. a Mercedes-Benz Service Centre.
Yo u will /nd information about operating 0uids
appr ovedfo r Mercedes-Benz and capacities under
"Operating Fluids and Capacities" (/ page 271).
Obser vethe information under "Mercedes-Benz
GenuineParts" (/ page 16). Ser
Ser
vice int
vice int erv
erval display
al display Ser
Ser
vice int
vice int erv
erval displa
al displa y function
y function The ASS
YST PLUS service inter val display on the
inst rument cluster display pr ovides information on
th ere maining time or distance before the next
service due date. Under arduous operating conditions or if
theve hi-
cle is subjected toincreased loads, the ASS YST
PLUS service inter val display may shor tenthe
service inter val.
Yo u can obtain fur ther information concerning the
servicing of your vehicle from a quali/ed specialist
wo rkshop. Displa
Displa
ying t
ying the ser
he ser vice due date
vice due date R
R
eq
eq uir
uir ements
ements
R The ignition is switched on.
On-board computer: 4 Service 5
ASSYST PLUS
The next service due date is displa yed. #
T
To e
o e xit t
xit t he display
he display: :press thea or%
steering-wheel button. Inf
Inf
or
ormation on r
mation on r egular maint
egular maint enance w
enance work
ork *
N
NOOTE
TE Premature wearthro ugh failure to
obser veservice due dates Main
tenance workwhich is not car ried out at
th eright time or incomple tely can lead to
increased wear and damage totheve hicle. #
Adhere tothe prescribed service inter-
va ls. #
Always ha vethe prescribed maintenance
wo rkcar ried out at a quali/ed specialist
wo rkshop. N
No
ot
tes on special ser
es on special ser vice r
vice req
equir
uir ements
ements The prescribed service inter
val is based on normal
ve hicle use. Main tenance workwill need tobe per-
fo rm ed more oTen than prescribed if theve hicle is
operated under arduous operating conditions or
increased loads.
Arduous operating conditions include:
R regular city driving with frequent intermediate
stops
R frequent short-distance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is oTen leT idling for long
periods
R operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used Maintenance and care
223 223
Page 227 of 337

In
these or similar operating conditions, ha vethe
air /lter, engine oil and oil /lter, forex ample,
re placed more frequentl y.
If th eve hicle is subjected toincreased loads, the
tyres must be checked more frequentl y.Yo u can
obtain fur ther information at a quali/ed specialist
wo rkshop. N
Non-oper
on-oper ational times wit
ational times wit h t
h the batt
he batt er
ery disconnec-
y disconnec-
t
t ed
ed The AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date on
th e inst rument cluster before disconnecting
th e battery (/ page 223). Engine com
Engine com
par
par tment
tment Opening and closing t
Opening and closing t
he bonnet
he bonnet &
W
WARNING
ARNING Risk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and injury
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonnet's range of mo vement. #
Do not open or close the bonnet if there
is a person in the bonnet's range of
mo vement. &
W WARNING
ARNING Risk of injury from touching
components under voltage
The ignition system and the fuel injection sys-
te m wo rkunder high voltage. You could receive
an elect ric shoc k. #
Neverto uch components of the ignition
system or the fuel injection system when
th e ignition is switched on. The
following are examples of live components:
R Ignition coils
R Spark plug connectors
R Injectors &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. *
N
NOOTE
TE Damage tobonnet or windscreen
wipers when opening the bonnet If
th e windscreen wipers ha vebeen folded
back from the windscreen when the bonnet is
opened, the windscreen wipers or the bonnet
may be damaged. #
Ensure that the windscreen wipers ha ve
not been folded back from the wind-
screen. Opening t
Opening t
he bonnet
he bonnet #
Pull the handle 1torelease the bonnet. 224
224
Maintenance and care
Page 228 of 337

#
Reach into thega p, push le ver2 ofthe bon-
net catch tothe leT and liT the bonnet.
When the bonnet has opened around 40 cm, it
will be automatically opened and held bythe
ga s pressure spring dampers.
Closing t
Closing t he bonnet
he bonn et &
W WARNI NG
ARNI NGRisk of /re due to0ammable
materials in the engine compartment or on
th eex haust system
Flammable materials may ignite. #
Ensure that there are no 0ammable
ex tern al materials in the engine compart-
ment or on theex haust system aTer
maintenance workhas been car ried out. *
N NOOTE
TE Damage tothe bonnet due topress-
ing it closed manually Pushing
the bonnet closed with your hands
could damage it. #
Toclose the bonnet, let it drop from the
speci/ed height. #
Lowe rth e bonnet and let it fall from a height of
appr oximately 30 cm, applying a little forc e as
yo u let it go. #
Ifth e bonnet remains slightly open, open it
again and let it fall, applying slightly more force
as you let it go, until it engages. Engine oil
Engine oil
Chec
Chec
king engine oil lev
king engine oil lev el wit
el with on-boar
h on-boar d com
d comput
puter
er
(engine wit
(engine wit hout oil dips
hout oil dipstic tick)
k)
R
R eq
eq uir
uir ements:
ements:
R The engine oil le vel is de term ined during driv-
ing.
R The engine is at normal operating temp erature.
R The vehicle is le vel during the measuring proc-
ess.
R The bonnet is not open.
Depending on the driving pro/le, the oil le vel can
be displa yed only aTer a driving time of up to
30 minutes and only when the ignition is switched
on.
On-board computer:
4 Service 5
Engine oil level
One of t One of t he f
he follo
ollowing messag
wing messag es appear
es appears on t
s on the dis-
he dis-
pla
pla y of t
y of t he on-boar
he on-boar d com
d comput
puter:
er:
Engine oil level Measurement in progress... #
Measurement of the oil le vel not yetpossible.
Re peat thequ ery aTer driving for a maximum
of 30 minutes.
Engine oil level OK
The bar for displaying the oil le vel on the display is
gr een and is between "min" and "max". #
Do not top up oil. The engine oil le vel is cor-
re ct.
Engine oil level Warm up engine #
Warm upthe engine tooperating temp erature.
Engine oil level Correct measurement only if vehi-
cle is on level ground #
Park theve hicle on a le vel sur face.
Engine oil level Add 1,0 l
The bar for displaying the oil le vel on the display is
orange and is below "min".
The oil le vel is too lo w. #
Add 1 l of engine oil (/ page 227).
Engine oil level Reduce oil level
The bar for displaying the oil le vel on the display is
orange and is abo ve"max".
The oil le vel is too high. Maintenance and care
225 225
Page 229 of 337

#
Siphon o. any excess engine oil that has been
added. Todo so, consult a quali/ed specialist
wo rkshop.
For engine oil level turn on ignition #
Switch the ignition on tocheck the engine oil
le ve l.
Engine oil level System inoperative
The /ll le vel sensor is defective or not plugged in. #
Have the oil le vel display checked at a quali/ed
specialist workshop.
Engine oil level System currently unavail. #
Close the bonnet.
Chec Chec king t
king t he engine oil lev
he engine oil lev el wit
el with t
h the on-board
he on-board
com
com put
puter (engine wit
er (engine wit h oil dips
h oil dipstictick)
k)
R R eq eq uir
uir ements:
ements:
R The vehicle is le vel during the measuring proc-
ess.
R The engine is switched o. at normal operating
te mp erature.
R Awa iting period of /ve minutes is obser ved.
R The ignition is switched on.
To check the engine oil le vel with the on-board
computer, the engine must ha vea /ll le vel sensor.
If not, the engine oil le vel can be checked only with
th e oil dipstick (/ page 226).
On-board computer: 4 Service 5
Engine oil level
The f
The f ollo
ollowing messag
wing messag es ma
es may appear on t
y appear on t he display
he display
of t
of t he on-boar
he on-boar d com
d comput
puter:
er:
Engine oil level OK #
Do not top up oil.
Engine oil level Add 1,0 l #
Addth e speci/ed quantity of oil
(/ page 227). #
Repeat the engine oil measurement aTer a few
minutes.
Engine oil level Reduce oil level
The oil le vel is too high. #
Siphon o. any excess engine oil that has been
added. Todo so, consult a quali/ed specialist
wo rkshop.
For engine oil level turn on ignition #
Switch on the ignition.
Waiting period for engine oil level not observed #
Ifth e engine is at normal operating temp era-
ture, repeat the engine oil measurement aTer
appr oximately /ve minutes. #
Ifth e engine is not at normal operating tem-
perature, repeat the engine oil measurement
aTer appr oximately 30 minutes.
Engine oil level Not with the engine running #
Switch o. the engine and, when it is at normal
operating temp erature, wait appr oximately
/ve minutes before measuring the engine oil
le ve l.
Engine oil level System inoperative
The engine oil le vel measurement is malfunction-
ing. #
Check the oil le vel using the oil dipstick
(/ page 226). #
Have the oil le vel display checked at a quali/ed
specialist workshop.
Chec Chec king t
king t he engine oil lev
he engine oil lev el wit
el with an oil dips
h an oil dips tick
tick &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. The engine oil becomes dirty during operation,
loses quality and also gradually loses volume.
Check the oil le velre gular lyand top up the oil or
ha ve itch anged if necessar y.
Re gular lych eck the 0uid le vel and the major
assemblies for leaks. If you de tect 0uid loss, for
ex ample, oil drops on theve hicle parking space,
consult a quali/ed specialist workshop as quickly
as possible. #
Only check the oil le vel when the engine is at
normal operating temp erature. 226
226
Maintenance and care
Page 230 of 337

Oil dipstick and engine oil /ller opening (e
xample:
petrol engine) Oil dipstick and engine oil /ller opening (e
xample:
diesel engine) #
Pull oil dipstick 1out of the dipstick tube. #
Wipe the oil dipstick 1using a lint-fre e cloth. #
Insert the oil dipstick 1back into the guide
tube as far as it will go and pull it out again.
If th e le vel is between MIN mark 3and MAX
mark 2,the oil le vel is adequate. #
Ifth e oil le vel has dropped toor below mini-
mum mark 3, open cap 4and top up the
engine oil (/ page 227).
The di.erence in quantity between mar ks2 and
3 depends on the engine:
R Diesel engines, about 2 l
R Petrol engines about 1.5 litres T
T
opping up t
opping up t he engine oil
he engine oil &
W
WARNING
ARNING Risk of /re and injury from
engine oil
If engine oil comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Make sure that no engine oil is spilled
next tothe /ller opening. #
Allow the engine tocool o. and thor-
oughly clean the engine oil from compo-
nent parts before starting theve hicle. &
W WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. *
N
NOOTE
TE Damage caused bytopping up too
much engine oil To
o much engine oil can damage the engine or
th e catalytic con verter. #
Have excess engine oil remo ved at a
qu ali/ed specialist workshop. *
N
NOOTE
TE Engine damage due touse of addi-
tives in the engine oil The use of additional additives in
the engine oil
can damage the engine. #
Do not use any additional additives in the
engine oil. +
ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TE Environmental
damage due tohydraulic 0uid le vel spill-
ages while topping up If 0uid spills onto soil,
the environment will be
damaged. #
Make sure that no 0uid spills while top-
ping up. Maintenance and care
227
227
Page 231 of 337

Example: engine oil /ller opening
#
Obser vethe information rega rding appro ved
engine oil under "Operating 0uids and capaci-
ties" (/ page 275). #
Unscr ewand remo vethe cap 1. #
Top up engine oil. #
Fitth e cap 1onthe /ller opening and
tighten.
When doing so, make sure that the cap
engages cor rectl y. #
If present, check the oil le vel using the oil dip-
stick (/ page 226). #
Inthe case of vehicles without an oil dipstic k,
ch eck the oil le vel with the on-board computer
aTer the next journey (/ page 225).
It is necessary torunth e engine for an extended
period aTer each oil top up tocor rectly de tect the
oil le vel.Fill le velch anges during oil top ups may
not be immediately visible. Depending on the driv-
ing pro/le, the new oil le vel can only be displa yed
aTer a driving time of up to60 minutes.
If necessar y,only top up thequ antity of oil shown
in the inst rument cluster display and check the oil
le ve l again aTer the next journe y. Chec Chec
king/t
king/t opping up t
opping up t he coolant
he coolant &
W
WARNING
ARNING Risk of /re‑ and injury from
antifreeze
If antifreeze comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Allow the engine tocool down before you
to p up the antifreeze. #
Make sure that no antif reeze spills out
next tothe /ller opening. #
Thoroughly clean the antifreeze from
component parts before starting the
ve hicle. &
W WARNING
ARNING Risk of scalding from hot cool-
ant
If yo u open the cap, you could be scalded. #
Letthe mo tor cool down before opening
th e cap. #
When opening the cap, wear pr otective
glo ves and saf ety glasses. #
Open the cap slo wlytorelease pressure. Check and
top up the coolant only when theve hi-
cle is stationary and in a horizontal position and
th e engine has cooled down. The coolant temp era-
ture must be below 50°C. &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. Coolant contains gl
ycol and is therefore poison-
ous. #
Obser vethe information under "Operating 0u-
ids and capacities" (/ page 277).
* NO
NOTE
TEPaintwork damage due tocoolant If coolant
gets on painted sur faces, the paint-
wo rkcan be damaged. #
Add coolant carefull y. #
Remo vespilled coolant. Re
gular lych eck the engine cooling system and the
heating system for leaks. If there is a loss of cool-
ant, ha vethe cause de term ined and recti/ed in a
qu ali/ed specialist workshop without dela y. 228
228
Maintenance and care
Page 232 of 337

Example: cap and coolant
expansion reser voir
Chec
Chec king t
king t he coolant lev
he coolant lev el
el #
Slowly turn the cap 1ofthe coolant expan-
sion reser voir2 half a turn anti-clockwise and
allow overpressure toescape. #
Turn cap 1further and remo veit.
The coolant le vel is cor rect in thefo llowing cases:
R Uptomar ker bar 3when the engine is cold
R Ifth e engine is warm, up to1.5 cm over
mar ker bar 3
T
T op up t
op up t he coolant
he coolant
Only use coolant appr oved for Mercedes-Benz to
av oid damaging the engine cooling system. #
Referto the information on coolant
(/ page 277). #
Re/ll the coolant up tothe mar ker bar 3in
th e /ller opening of the coolant expansion res-
er vo ir2. #
Replace cap 1and tighten in a clockwise
direction. #
Start the engine. #
Set thete mp erature in theve hicle interior to
th e maximum output on the control panel of
th e climate control. #
ATer about /ve minutes, switch o. the engine
again and allow it tocool down. #
Check the coolant le vel again and top up the
coolant if necessar y. F
F
illing up t
illing up t he windscr
he windscr een w
een washer syst
asher syst em
em &
W
WARNING
ARNING Risk of /re and injury from
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly 0am-
mable. #
Avoid /re, naked 0ames, smoking and
th e creation of spar kswhen using wind-
screen washer concentrate. &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. *
N
NOOTE
TE Damage totheex terior lighting due
to unsuitable windscreen washer 0uid Unsuitable windscreen
washer 0uids may dam-
age the plastic sur face of theex terior lighting. #
Only use windscreen washer 0uids that
are also suitable for use on plastic sur fa-
ces, e.g. MB SummerFit or MB WinterFit. T
T
opping up t
opping up t he w
he washer
asher 0uid
0uid Wa
sher 0uid reser voir (e xamp le) #
Obser vethe no tes on windscreen washer 0uid
(/ page 277). #
Pull cap 1upwards bytheta b. #
Top up thewa sher 0uid. Main
tenance and ca re
229
229