esp MERCEDES-BENZ E-CLASS COUPE 2009 Repair Manual
[x] Cancel search | Manufacturer: MERCEDES-BENZ, Model Year: 2009, Model line: E-CLASS COUPE, Model: MERCEDES-BENZ E-CLASS COUPE 2009Pages: 313, PDF Size: 7.76 MB
Page 187 of 313
able washe
rfluid concentrate could dam-
age th eplastic lamp lenses of th ehead-
lamps.
X Mix th ewindscree nwashe rfluid in acon-
tainer beforehand.
X At temperatures abov efreezing:
Fill th ewashe rfluid reservoir wit hamix of
wate rand windscree nwashe rconcentrate
(e.g. MB SummerFit).
X At temperatures below freezing:
Fill th ewashe rfluid reservoir wit hamix of
water, antifreez eadditive and windscreen
washe rconcentrat e(e.g. MB WinterFit).
Adapt th emixing ratio to th eoutside tem-
peratures.
X To open: pull cap0046upwards by th etab.
X Top up wit hthe premixe dwashe rfluid.
X To close: presscap 0046 onto th efille rneck
until it engages. Tyres and wheels
Point
storemember
! For safety reasons, Mercedes-Ben zrec-
ommends that you only use tyres, wheels
and accessorie swhichhave been approved
by Mercedes-Ben zspecifically for your
vehicle .Thes etyres have been specially
adapted for use wit hthe control systems,
suc hasA BSor ESP ®
,a nd are marke das
follows:
R MO =Mercedes-Ben zOriginal
R MOE =Mercedes-Ben zOriginal Exten-
ded* (tyres wit hrun-flat characteristics)
Only use Mercedes-Ben zOriginal Extended
tyres* on wheels that have been specifi-
cally approved by Mercedes-Benz.
If you use other tyres, wheels and acces-
sories, Mercedes-Ben zcanno taccept any
responsibility for damag ethatm ay result
from this. Further informatio nabout tyres,
wheels and approved combinations can be obtaine
dfroma ny Mercedes-Ben zService
Centre.
! If you fit tyres other than those tested and
recommended by Mercedes-Benz, charac-
teristic ssuchash andling, noise levels and
fuel consumption ,etc.m ay be adversely
affected. In addition ,when driving wit ha
load, tyr edimensional variation scould
caus ethe tyres to come int ocontac twith
th eb odywork and axle components. This
could result in damag etothetyres or the
vehicle.
! Retreade dtyres are neither tested nor
recommended by Mercedes-Benz, since
previous damag ecanno talways be detec-
te donr etreade dtyres. As aresult,
Mercedes-Ben zcanno tguarante evehicle
safety if retreade dtyres are fitted. Do not
fit used tyres if you have no information
about their previous usage. G
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Tyres, wheel soraccessorie swhichh ave not
been approve dbyMercedes-Ben zfor your
vehicle or are no tused as they should be, can
impai rdriving safety. As aresult, you could
caus eana ccident. Before purchasin gand
usin gthem, enquire about their suitability,
legal stipulation sand factory recommenda-
tions at aMercedes-Ben zServic eCentre.
Modification work on th ebrak esystem and
wheel sisnotpermitted, no ristheuse of
spacer plates or brak edust shields. This inva-
lidates th eGeneral Operatin gPermit for the
vehicle.
Notes on selecting, fittin gand replac-
ing tyres R
Only fit tyres and wheels of th esame type
and make.
R Only fit tyres of th ecorrec tsizeo ntot he
wheels.
R Afte rfittin gnew tyres, run them in at mod-
erat espeeds for th efirst 10 0kmast hey 184
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Rim diameter
0046is part of th etyres izea nd
can be found on th etyres idewall. G
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Tyre pressur ethatise ither to ohigh or to olow
has anegative effec tonthevehicle's driving
safety, whic hcould lead you to caus eanacci-
dent. Therefore ,you should regularl ycheck
th ep ressur eofall thetyres, particularly prior
to lon gtrips, and correc tthe pressur easnec-
essary.
Use asuitable pressur egauge .The outer
appearanc eofatyred oes no tpermit any reli-
able conclusio nabout th etyrep ressure. G
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Do no tfit anythin gelse to th etyrev alv eo ther
than th estandard valv ecap.Inp articular, ret-
rofitte dtyrep ressur emonitors whic hare
screwed on to th evalvem ay overload it and
caus eittof ail.D ue to their design ,the valve
is kept open continuously, whic hmay lead to
air loss. G
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Should th etyrep ressur edropr epeatedly:
R chec kthe tyrefor foreign bodies.
R chec kwhether th ewhee lisl osing air or the
valv eisl eaking.
R mak esuret hato nlyav alvec ap approved
by Mercedes-Ben zisfittedont hetyre
valve. Tyre pressures that are to
olow hav eanega-
tive effec tonvehiclesafety, whic hcould lead
you to caus eanaccident.
If possible, you should only correc ttyrep res-
sures when th etyres are cold. Dependin gon
th ea mbien ttem perature, th espeed you are
drivin gata nd theload on th etyres, th etyre
temperature and thus th etyrep ressur emay
chang ebyapproximately 0. 1bar per 10 †.
Tak ethisi ntoa ccoun twhen checking the
pressur eofwarm tyres and only correc titif
it is to olow for th ecurren toperating condi-
tions.
Drivin gwitht yrep ressur ethatist oohigh or
to ol ow can:
R shorten th eservic elife of th etyres
R increase th elikelihood of tyr edamage
R hav ean egative effec tonhandlin gcharac-
teristics (e.g. by causin gaquaplaning)
Also chec kthe pressur eofthe"Minispare"
emergenc yspar ew heel*. H
Environmental note
Chec kthe tyrep ressur eregularly, at least
every 14 days. Tyre pressure loss warning
Whil ethe vehicl eisinm otion,the tyrep res-
sur eloss warnin gsystem monitors th eset
tyr ep ressur eusingthe rotational speed of
th ew heels. This enables th esystem to detect
significant pressur eloss in atyre. If th espeed
of rotation of awhee lcha nges as aresult of
al oss of pressure, acorre spondin gwarning
message will appear in th emulti-function dis-
play. G
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The tyr epressur eloss warnin gsystem does
no tw arn you of an incorrectl yset tyr epres-
sure. The table on th einside of th efuel filler
flap will help you decide whether th etyre
pressures should be corrected. Ty
res an dwheels
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The tyre pressure loss warning system does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detected by the tyre pressure loss
warning system.
The tyre pressure monitor is not able to warn
you of asudden loss of pressure, e.g. if the
tyre is penetrated by aforeign object.
In the event of asudden loss of pressure, bring
the vehicle to ahalt by braking carefully. Do
not make any sudden steerin gmovements
when doing so.
The function of the tyre pressure loss warning
system is limited or delaye dif:
R snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt avery sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration).
R you are towing avery heavy or large trailer.
R you are driving with aheavy load (in the
vehicle or on the roof).
Restarting the tyrep ressureloss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R
changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the inside of the fuel filler flap
to ensure that the tyre pressure in all four
tyres is set correctly for the respective
operating conditions.
X Observe the notes in the section on tyre
pressures (Y page 186). G
Risk of accident
The tyre pressure loss warning system can
only give reliable warnings if you have set the
correc ttyre pressure.
If an incorrect tyre pressure is set, these
incorrect values will be monitored.
At yre with insufficien tpressure results in
vehicle instability when driving, thus increas-
ing the risk of an accident.
X Make sure that the key is in position 2in
the ignition lock.
In the multi-function display you will see the
standard display (Y page 108).
X Press the 0040or003E button to select the
Service menu.
X Press the 003Cor003D button to select
Tyre pressure.
X Press the 0064button.
The multi-function display shows the mes-
sage:
Run Flat Indicator active Restart
with OK
If you wish to confirm the restart:
X Press the 0064button.
The multi-function display shows the mes-
sage:
Tyre press. now OK?
X Press the 003Cor003D button to select
Yes.
X Press the 0064button.
You will see the following message in the
multi-function display:
Run Flat Indicator restarted
After ateach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres.
If you wish to cancel the restart:
X Press the 0041button.
or
X When the Tyre press. now OK? message
appears, press 003Cor003D to select
Cancel. 188
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X
Press the 0064button.
The tyre pressure values stored at the last
restart will continue to be monitored. Interchanging the wheels
G
Risk of accident
Interchange the fron tand rear wheels only if
they have the same dimensions :for example
size, offset ,etc.
After awheel is changed, have the tightening
torque checked at aspecialist workshop that
has the necessary specialist knowledge and
tools to carry out the work required.
Mercedes-Benz recommends that you use a
Mercedes-Benz Servic eCentre for this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at aq ualified specialist workshop.
The wheels could work loose if they are not
tightened to atorque of 130 Nm.
For safety reasons, Mercedes-Benz recom-
mends that you only use wheel bolts of the
correc tsize which have been approved for
Mercedes-Benz vehicles.
The wear patterns on the fronta nd rear tyres
differ, depending on the operating conditions.
Interchange the wheels before aclear wear
patter nhas formed on the tyres. Frontt yres
typically wear more on the shoulders and the
rear tyres in the centre.
On vehicles that have the same size fronta nd
rear wheels you can interchange the wheels
every 5,000 km to 10,00 0kmdepending on
the degree of tyre wear. Do not reverse the
direction of tyre rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time awheel
is interchanged. Check the tyre pressure and,
if necessary, restart the tyre pressure loss
warning system*. Winter driving
Points to remember
Have your vehicle winterproofed at aqualified
specialist workshop, e.g. at aMercedes-Benz
Servic eCentre, at the onset of winter.
Observe the notes in the "Changing awheel"
section (Y page 189). Winter tyres
Use winter tyres at temperatures below
+7 ˚C and in wintry road conditions. Only
winter tyres displaying the 004Dsnowflake
symbol in addition to the M+S markin gpro-
vide optimum grip in wintry road conditions.
Only these tyres will allow the ABS and ESP
driving systems to function optimally in win-
ter, as these tyres have been designed spe-
cifically for driving on snow.
Use winter tyres of the same make and tread
on all wheels to maintain safe handling char-
acteristics. G
Risk of accident
Winter tyres with atread depth of less than
4mmm ust be replaced immediately. They are
no longer suitable for winter use and can no
longer provide sufficient grip. This could
cause you to lose control of your vehicle and
cause an accident.
Always observe the maximum permissible
speed specified for the winter tyres you have
fitted. If you fit winter tyres which have a
lower maximum permissible speed than that
of the vehicle, affix an appropriate warning
sign in the driver's field of vision. This can be
obtained at aqualified specialist workshop,
e.g. from aMercedes-Benz Servic eCentre.
Under these circumstances, you should also
restrict the maximum speed of the vehicle
using permanen tSpeedtronic 37
to the maxi-
mum permissible speed for the winter tyres
(Y page 135).
37 Only available for certain countries. Winter driving
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Once you have fitted the winter tyres:
X
Check the tyre pressures (Y page 186).
X Restart the tyre pressure loss warning sys-
tem (Y page 187). G
Risk of accident
If you fit the spare wheel* when driving with
winter tyres, bear in mind that driving stability
will be impaired owing to unstable cornering
characteristics caused by the different tyres.
You should therefore adapty our driving style
and drive carefully.
Have the spare wheel* replaced at the near-
est qualified specialist workshop which has
the necessary specialist knowledge and tools
to carry out the work required. Mercedes-
Benz recommends that you use aMercedes-
Benz Service Centre for this purpose. In par-
ticular, work relevant to safety or on safety-
related systems must be carried out at aquali-
fied specialist workshop. Snow chains
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains which
have been speciallya pproved for your vehicle
by Mercedes-Benz,ora re ofacorresponding
standard of quality.
If you intend to fit snow chains, pleaseb ear
the following points in mind:
R you may not attach snow chains to all
wheel-tyre combinations; see the "Tyres
and wheels" section in the "Technical data"
chapter.
R snow chains must not be fitted to emer-
gency spare wheels, e.g. a"Minispare"
emergency spare wheel.
R Fit snow chains only in pairs and only to the
rear wheels. Comply with the manufactur-
er's installation instructions.
Do not exceed the maximum permissible
speed of 50 km/h.
i You may wish to deactivate ESP ®
when
pulling awayw ith snow chains fitted (Y
page 54). This way,y ou can allowthe
wheels to spin in acontrolled manner, ach-
ieving an increased driving force (cutting
action). Winter driving
G
Risk of accident
Do not shift down for additional engine brak-
ing on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Vehicles with manual transmission: engage
neutral.
X Vehicles with automatic transmission*:
shift the selector lever to N.
X Try to bring the vehicle under control by
using corrective steering. Driving tips
Rolling with the engines
witchedoff G
Risk of accident
Never switch the engine off while the vehicle
is in motion.
There is no power assistance for the steering
and the service brake when the engine is not
running.
You will require considerably more effort to
steer and brake and you could therefore lose
control of the vehicle and cause an accident. 190
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Brakes
G
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Do not change down for additional engine
braking on aslipper yroads urface. Thi scould
cause the drive wheels to lose thei rgripa nd
the vehicl ecould skid. G
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Make sure tha tothe rroa du sers are not
endangere dbyyourb raking.
Downhil lgradients On long and stee
pdownhil lstretches ,espe-
ciall yift he vehicl eisladen or towing atrailer,
yo um usts hift to alower gearing oodtime or,
on vehicles with automatic transmission*,
select shift range 1,2or 3.
i Thisalsoa pplies if youhavea ctivated
cruis econtrol, SPEEDTRONIC or DIS-
TRONIC PLUS*.
Thi sw illu se the braking effect of the engine,
so less braking will be required to maintain
the speed .Thisr elieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly. If yo uneed
additional braking ,depress the brake pedal
repeatedly rather tha ncontinuously.
Heavy and light loads If the brakes have been subjected to
aheavy
load ,don ot stop the vehicl eimmediately, but
drive on for ashort while. Thi sallow sthe air-
flo wtoc oolthe brakes more quickly. G
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Never depress the brake peda lcontinuously
whil ethe vehicl eisinmotion, e.g .neve rcause
the brakes to ru bbyapplyingconstant slight
peda lpressure. Thi scauses the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely.
If the brakes have been used onl ymoderately,
yo us houl doccasionall ytest thei reffective-
ness .Todot his, brake more firmly from a highe
rspeed .Thisi mprove sthe gri pofthe
brakes.
Wet roads If driving in heavy rain for
aprolonged period
of time withou tbraking ,ther em aybe a
delaye dreactio nfrom the brakes when brak-
ing for the first time .Thism ayalso occu rafter
the vehicl ehasbeen washed.
Yo uh avetod epress the brake peda lmore
firmly .Maintain agreate rdistance from the
vehicl einfront.
After driving on awetroa dorh aving the vehi-
cle washed, brake firmly whil epayin gatten-
tio ntot he traffic conditions. Thi swaythe
brake discs will become warm, drying more
quickly, which will protect them against cor-
rosion.
Limite dbraking performanc eonsalt
treate droads G
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The laye rofsaltont he brake discs and the
brake pads/lining smaycause adelay in the
braking effect, resulting in asignificantly lon-
ger braking distance, which could lead to an
accident.
To avoid thi sdanger ,you should:
R occasionall ybrake carefully, withou tput-
ting othe rroa du sers at risk, when yo uare
driving on salte droads. Thi shelps to
remove any salt tha tmayhave started to
buil dupont he brake discs and the brake
pads/linings.
R maintain agreate rdistance to the vehicle
ahea dand drive with particula rcare.
R carefull yapply the brakes at the end of a
trip and immediatel yaftercommencing a
new trip ,sothats altr esidue sare removed
from the brake discs. Driving tips
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New brak
epads/linings For safety reasons, Mercedes-Benz recom-
mend
stha tyou onl yhaveb rake pads/linings
fitted to your vehicl ewhich have been
approved for Mercedes-Benz vehicles or
which correspond to an equivalent quality
standard. Brake pads/lining swhich have not
been approved for Mercedes-Benz vehicles or
which ar enot of an equivalent quality could
affec tyou rv ehicle' soperating safety. G
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New brake pads/lining sonlyr each their opti-
mu mb raking effect after several hundred kil-
ometres of driving. Before thi soptimum brak-
ing effect is reached, yo ushoul dcompensate
for the reduced braking effect by applying
greate rpressure when braking .Thisa lso
applie safter the brake discs or the brake
pads/lining shaveb eenr eplaced. Tyre grip
G
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Whil ethe vehicl ecan be full ycontrolle data
certai nspeed on dry roads ,you must reduce
your spee donwetor icy roads to achieve the
same roa dsafety .Otherwise, yo ucould cause
an accident.
Pa yp articula rattentio ntothe roa dconditions
at temperatures around freezing point.
If ice ha sformed on the roa dsurface (e.g.
fro mf og), athinf ilmofw ater rapidl yforms on
the ice when yo ubrake, considerabl yreduc-
ing tyr egrip. Drive with particula rcareins uch
weather conditions. Driving on we
troads
If water ha saccumulate dtoacertaindepth
on the roa dsurface, there is adangerofa qua-
planing occurring, eve nif:
R yo ud rive at lo wspeeds
R the tyres have adequate trea ddepth For thi
sreason, do not drive in tyr eruts, and
brake carefully. Driving on flooded roads
If yo uhavetod rive on stretche sofroadon
which water ha scollected ,pleas ebearin
mind that:
R the maximum permissibl estill water depth
is 25 cm.
R yo us houl ddrive no faste rtha natw alking
pace.
! Bea rinm indt hatv ehicles travelling in
front or in the opposite directio ncreate
waves .Thism aycause the maximum per-
missibl ewater depth to be exceeded.
Failur etoo bserve these note smayresult
in damage to the engine ,electrica lsys tems
and transmission. Driving abroad
Points to remember
An extensive Mercedes-Benz Service network
is also availabl einother countries .The
Service Hotline's current telephone numbers
for us ewheny ou area broa da reto be found
in the "Service24h" chapte rofthe Service
Booklet.
Onl ylow -octan efuelisa vailable in certain
countries.
Yo uc an find furthe rinformation abou tfuel
grade son(Ypage 178). Symmetrical dipped beam
If your journey take syou to countries where
vehicles ar edriven on the opposite side of the
roa dtot he country in which the vehicl eis
registered, your headlamps must be switched
to symmetrical dipped beam .Thisp revents
oncoming traffi cfromb eing dazzled.
Have the headlamps converte dasclose as
possibl etothe borde rbefor ed riving in these 192
Driving ab
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Trailer power supply
When it leaves the factory ,you rv ehicle's
trailer socket outle tise quippe dwithap er-
manent powe rsuppl yand apower supply that
is switched on via the ignition lock.
The permanent powe rsuppl yiss upplie dvia
trailer socket pi n9.
The powe rsuppl ythatiss witched on via the
ignition lock is supplied via trailer socket
pi n1 0.
! Youc an connect consumers with apower
rating of up to 240 Wtothe permanent
powe rsuppl yand up to 180 Wtothe power
supply tha tiss witched on via the ignition
lock.
Yo um ustn ot charge atrailer battery using
the powe rsupply.
The trailer' spermanent powe rsuppl yis
switched off in the event of lo wvehicl esupply
voltag eand after si xhours at the latest.
Yo uc an obtai nfurthe rinformatio nabout
installing the trailer electrics fro maqualified
specialis tworkshop ,e.g.aM ercedes-Benz
Service Centre.
X To switc hthe connected power supply
on or off: turnthe key in the ignition lock
to position 2or 0,r espectively. Bulb failure indicator fo
rLEDs
i If LED lamps ar efitte dint he trailer, an
error message ma yappea rinthe multi-
functio ndisplay –evenift hereisnof ault –
if the corresponding LED chain' scurrent
dra wd rops belo w50milliamperes (mA).
To ensur ereliabl eoperatio noft he bulb failure
indicator, aminimu mcurrent of 50 mA must
be guaranteed by the manufacturer of each
LED chain in the trailer lighting. Trailer with 7-pi
nconnect or
If your trailer ha sa7-pinc onnector, yo ucan
connect it to the 13-pin socket on the ball
coupling using an adapter or, if necessary ,an
adapter cable .Both of these can be obtained
at aq uali fied specialis tworkshop ,e.g.ata
Mercedes-Benz Service Centre.
Fittin gthe adapter X
Open the socket cover.
X Insert connector with lug 0046into
groove 0047on the socket and tur nthe con-
necto rclockwise to the stop.
X Make the cove rengage.
X If yo uareusing an adapter cable ,sec ure
the cable to the trailer with cable ties.
! Make sure tha tthere is sufficient cable
play so tha tthe cable canno tbecome
detached when cornering. Service
ASSYST PLUS service interval display
The ASSYST PLU Sservice interva ldisplay
informs yo uofthe next service du edate.
The service du edateiss hown in the multi-
functio ndisplay ,for example:
Nex tservic eAin..d ays
Nex tservic eAin. .. km
Servic eAdue
The letter indicates which service is due. A
stands for aminor service and Bfor am ajor Service
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service.
Anumber or another letter may be
displayed after the letter. This figure indicates
any necessary additional maintenance work
to be performed. If you report this displayed
information to aqualified specialist work-
shop, for example aMercedes-Benz Service
Centre, they can inform you of the costs the
service will incur.
The ASSYST PLUS service interval display
does not take into account any periods of
time during which the battery is disconnec-
ted. To maintain the time-dependent service
schedule:
X Note down the service due date displayed
before disconnecting the battery.
or
X Subtract the battery disconnection periods
from the service date shown on the display
after reconnecting the battery.
Hiding aservice message X
Press 0041or0064.
Service overdue Ad
isplaym essage is shown in the multi-func-
tion display, for example:
Service Aoverdue by ... days
Service Aoverdue by .. km
i If you fail to have the service performed
by the specified date, you may be violating
applicable laws. Your warranty may be inva-
lidated and goodwills ettlementsmay be
refused.
Callingupa service due date X
Switch on the ignition.
X Press the 0040or003E button to select the
Service menu.
X Press the 003Cor003D button to select the
ASSYST PLUS submenu and confirm with
0064.
The multi-function displays hows the
service due date. Care
Care and cleaning products
Regular care of your vehicle is acondition for
retaining the quality in the long term.
Use only care products and cleaning agents
recommended and approved by Mercedes-
Benz.
! For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
and do not scrub.
Do not touch the surfaces and protective
films with hard objects, e.g. rings or ice
scrapers. You could otherwise scratch or
damage the surfaces and protective film. H
Environmental note
Dispose of empty packaging, cleaning cloths
and polishing wads in an environmentally
responsible manner.
! Do not park the vehicle for along period
of time directly after cleaning, especially if
the wheels have just been cleaned with a
wheel cleaner. Wheel cleaners could cause
rapid corrosion of the brake discs and
brake pads/linings. After cleaning, park
the vehicle when it is at normal operating
temperature. Exterior care
Automatic car wash G
Risk of accident
The vehicle is braked when the HOLD function
or DISTRONIC PLUS* is activated. Therefore,
deactivate the Hold function or DISTRONIC
PLUS before the vehicle is washed in an auto-
matic car wash. 198
CareOperation
*o
ptional
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!
Do not clean the camera lens and the area
around the reversing camera with ahigh-
pressure cleaner.
Cleaning the exhaust tail pipes Impurities combined with the effects of road
grit and corrosive environmental factors may
cause flash rust to form on the surface. Reg-
ularc are of the exhaust tail pipes will ensure
that their original shine is restored.
! Do not clean the exhaust tail pipes with
alkaline-based cleaning agents such as
wheel cleaner.
X Cleant he exhaust tail pipes with achrome
care product approved by Mercedes-Benz.
Trailer tow hitch* The ball coupling must be cleaned if it
becomes dirty or corroded.
X Remove any rust using awire brush.
X Remove dirt with aclean, lint-free cloth or
ab rush.
! Do not clean the ball coupling with ahigh-
pressure cleaner. Do not use solvents. X
After cleaning, lightly oil or grease ball cou-
pling 0046.
X Check that the vehicle's trailer tow hitch is
working properly.
! Observe the note on care provided by the
trailer manufacturer. i
Maintenance of the ball coupling and
trailer tow hitch can also be performed by
any Mercedes-Benz Service Centre. H
Environmental note
Dispose of oily and greasy cloths in an envi-
ronmentally-responsible manner. Interior care
Cleaning the steering wheelb oss and
dashboard G
Risk of injury
When cleaning the steering wheel boss and
dashboard, do not use cockpit sprays or
cleaning agents containing solvents. Cleaning
agents containing solvents cause the surface
to become porous, and as aresult, plastic
parts may break awayw hen an airbagis
deployed, which may result in severe injuries.
X Wipe the dashboard and steering wheel
boss with adamp, lint-free cloth (e.g. a
microfibre cloth) and cleaning agent.
X Heavy soiling: use car care and cleaning
products recommended and approved by
Mercedes-Benz.
Cleaning the COMAND display X
Before cleaning the display, make sure that
it is switched off and has cooled down.
X Cleant he displays urface using acommer-
cially-available microfibre cloth and TFT/
LCD displayc leaner.
X Dry the displays urface usingadry micro-
fibre cloth.
! For cleaning, do not use any of the fol-
lowing:
R alcohol-based solvents or petrol
R abrasive cleaning agents
R commercially-available householdc lean-
ing agents Care
203Operation
*optional
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