Page 307 of 446

Rthee nergy supply or theo n-boar delectri‐
cal sy stem is malfunctioning.
When your vehicle is then towe da way,signif‐
icantly mor eeffor tm aybe requ iredtosteer
and brak ethan is normally required.
#Useatow bar.
#Mak esuret hat thes teering wheel can
mo vefreely ,befor etow ing thev ehicle
aw ay.
* NO
TEDama gedue to to wing away at
exc essivel yhigh speeds or overlong dis‐
ta nces
The driv etra in could be damaged when tow‐
ing at excessively high speeds or over long
dis tances.
#At ow ing speed of 31mp h(50 km/h)
mus tnotbe exc eeded.
#Atow ing dis tance of 31mile s(50 km)
mus tnotbe exc eeded.
Ifav ehicle mus tbetow st artedort owedaway,
its weight mus tnotexc eed thep ermissible gross
mass of thet ow ing vehicle.
&
WARNING Risk of accident whe ntow ing
av ehicle whic histoo heavy
If th ev ehicle being tow- star tedort owed
aw ay is heavier than thep ermissible gross
mass of your vehicle, thef ollowing situations
can occur:
RThe towing eyem aybecome de tach ed.
RThe vehicle/trailer combination may
swer veoreve noverturn.
#If ano ther vehicle is tow- star tedo r
to we da way,its weight mus tnotexc eed
th ep ermissible gross mass of your ow n
ve hicle.
#Information on thep ermissible gross mass of
th ev ehicle can be found on thev ehicle iden‐
tification plat e(
→page342). During
thet ow ing procedure, obser vethef ollow‐
ing:
RDeactivat ethe DISTRONIC dis tance pilot.
RDo no tactivate theH OLD function.
RVehicles with automatic transmission: Do
no to pen thed rive r's door or front passenger
door ,otherwise thea utomatic transmission
automaticall yshifts toposition j.
#Makesuret hat theb atter yisc onnected and
ch arge d.
When theb atter yisd ischar ged:
RThe engin ecann otbe star ted.
RThe elect ricp arkin gb rake canno tbe
re leased or applied.
RVe hicles with automatic transmission:
The au tomatic transmission canno tbeshif‐
te dtop osition iorj.
#Ins tallth et ow ing eye(→pag e307).
#Attach thet ow bar.
Breakdown assis tance 305
Page 308 of 446

*NO
TEDama gedue toincor rect connec‐
tion
#Onl yconnect thet ow ro pe or towb arto
th et ow ing eyes.
#Deactivat eautomatic locking (→pag e62).
#Deactivat eActiv eBrake Assi st(→pag e156).
#Vehicles with automatic transmission:
Shif tthe automatic transmission toposition
i.
% Vehicles with automatic transmission: If
th ea utomatic transmission cannot be shif‐
te dtop osition i,havethev ehicle trans‐
por teda way(
→pag e306).
#When towing away wit hthe rear axle
ra ised: movethef ront wheels int othe
st ra ight-ahead position.
#When towing away wit hone axle raised:
switc hont he powersupp ly.
#When towing away wit hbotha xleson
th eg round: switch onthei gnition.
#Re lease thee lectric parking brake. *
NO
TEDama gedue toexcessiv etracti ve
po we r
Ifyo up ullaway sharpl y,thet ractiv epowe r
ma ybet oo high and thev ehicles could be
damaged.
#Pull away slowl yand smoo thly.
Loading the vehicl efor transport
Transpor tatio nofv ehicles should onl ybecarried
out byprofessional reco very companies.
#Obser vethen otes on towing away
(→pag e304).
#Connec tthe towb arto thet ow ing eyet o
load thev ehicle.
#Vehicles with automatic transmission:
Shif tthe automatic transmission toposition
i.
% Ve
hicles with automatic transmission:
The au tomatic transmission ma ybelocked
in position jinthee vent of damage tothe
electrics. Toshif ttoi,p rovide theo n- boar
delectrical sy stem wit hpowe r
(
→pag e301).
#Load thev ehicle ont othe transpor ter.
#Ve hicles with automatic transmission:
Shif tthe automatic transmission toposition
j.
#Use thee lectric parking brak etosecurethe
ve hicle and pr event it from rolling away.
#Onl ysecur ethe vehicle bythew heels.
4MATIC vehicles/ vehicles with automatic
transmission
#Mak esuret hat thef ront and rear axle scome
to rest on thes ame transpor tvehicle.
306
Breakdown assis tance
Page 309 of 446
*NO
TEDama getothed rive trai ndueto
incor rect positioning
#Do no tposition thev ehicle abo vethe
connection point of thet ranspor tvehi‐
cle.
Installing thet ow ing eye
%
The towing eyeisp artoft hevehicle tool kit.
#Press them arkonc over 1 inwa rdsa nd
re mo ve.
#Scr ew inthet ow ing eye clockwise tothe
st op.
% Mak esuret hat co ver1 engages in the
bumper when your emo vethet ow ing eye. *
NO
TEDama gedue toincor rect us eof
th et ow ing eye
When atow ing eyeisu sedtoreco verav ehi‐
cle, thev ehicle ma ybedamaged in thep roc‐
ess.
#Onl yusethet ow ing eyetot owaway or
to ws tart thev ehicle.
Tows tarting thev ehicle (emer gency engine
st art)
* NO
TEDama getothea utomatic trans‐
mission due to towstarting
The automatic transmissionm aybe damaged
in thep rocess of tows tartin gv ehicles with
automatic transmission.
#Ve hicles wit hautomatic transmission
mus tnotbe tows tarted.
Breakdown assis tance 307
Page 310 of 446

Electrical fuses
Notesone lectrical fuses
&
WARNING Risk of accident and injury
due to ov erloaded lines
If yo um anipulat eorb ridg eaf aulty fuse or if
yo ur eplace it wit hafuse wit hahigher
amperage, thee lectric line could be overloa‐
ded.
This could result in afire.
#Alwa ys replace faulty fuse swiths peci‐
fi ed ne wfuses conta iningthe cor rect
amperage.
* NO
TEDama gecaused byincor rect fuses
Incor rect fuses ma ycause damag etoelectri‐
cal components or sy stems.
#Onl yuse Mercedes-Benz appr oved
fuse switht he cor rect fus erating.
Blow nfuses must bereplaced wit hfuses of the
same rating ,which youc an recognize bythe colo
rand fus erating. Th efuser atings ar eliste d
in thef use assignmen tdiagram.
Fu se assignment diag ram: onthef use bo xin
th et runk (
→pag e310).
* NO
TEDama geor malfunctions caused
by moisture
Moistur emaycause dama getothee lectrical
sy stem or cause it tomalfunction.
#When thef use bo xisopen, mak esure
th at no moistur ecan enter thef use
box.
#When closing thef use box, mak esure
th at thes eal of thel id is positioned cor‐
re ctly on thef use box.
Ifan ewlyinser tedf use also blo ws,have the
cause trace dand rectifie dataq ualified special‐
is tw orks hop.
Ensur ethe following befor ereplacing afuse:
RThe vehicle is secured agains trolling away.
RAll electrica lconsumer sareswitched off.
RThe ignition is switched off. The electrica
lfus es ar eloc ated in various fuse
bo xes:
RFu se bo xinthe engine compartment on the
driver's side (→pag e308)
RFuse bo xont he driver's side of thec ockpit
(→pag e310)
RFuse bo xinthe front-passenge rfootwell
(→pag e310)
RFuse bo xinthe trunk on ther ight-hand side
of thev ehicle, when vie wedint he direction
of tra vel(
→pag e310)
Fu se bo xinthe engine compartment
Prerequisites
Obser vethen otes on electrical fuses
(
→pag e308).
Ha ve thef ollowing readil yavailable:
RAd ryclo th
RAs crew driver
308
Breakdown assis tance
Page 311 of 446
Opening
&WARNING Risk of injury from usingthe
windshield wiper swhile thee ngine hood
is open
When thee ngine hood is open and thew ind‐
shield wiper saresetinm otion ,you can be
trappe dbythe wiper linkage.
#Alw ayss witc hoffthew indshield wipers
and ignition befor eopening thee ngine
hood.
#Tu rn clip 2on co ver1 aquar ter-tur nto
th el eft.
#Pull co ver1 upwards in thed irection of the
ar row .
#Remo veanye xisting moisture fromthef use
bo xu sing adryclo th.
#Loosen scr ews4,r emovefuse bo xlid 3
from thet op.
Closing
#Chec kwhether thes eal is positioned cor‐
re ctly in thel id.
Breakdown assis tance 309
Page 312 of 446
#Insertlid int othe brac ketatt herear of the
fuse box.
#Fo ld down lid of thef use bo xand tighten
scr ews4.
#Inser tcove r1 on bo thsides and engage
saf etyc lips.
#Clos ethe hood.
Cockpit fuse box
The fuse bo xisonthe side of thed ashboard
under acover.
#Contact an authorized Mercedes-Benz Cen‐
terf or fur ther information.
Fu se bo xinthe front-passenger foot we ll
Prerequisites
Obser vethen otes on electrical fuses
(
→pag e308).
#Open co ver1 inthed irection of thea rrow
and remo veit.
Fuse bo xinthe trunk
Prerequisites
Obser vethen otes on electrical fuses
(
→pag e308).
#Fold co ver1 down in thed irection of the
ar row .
The fuse assignment diagram is in areces son
th es ide of thef use box.
310
Breakdown assis tance
Page 335 of 446

RAttemp eratures belo w45°F(7°C), use win‐
te rt ires or all-seaso ntires mar kedM +Sfor
all wheels.
Wi nter tires bearing thei snowflak esym‐
bol in addition totheM +S marking pr ovide
th eb estp ossible grip in wintr yroad condi‐
tions.
RFo rM +S tires, only use tires wit hthe same
tread.
RObser vethem aximum permissible speed for
th eM +S tir emounted.
If th is is belo wthe vehicle's maximum speed,
th is mus tbeindicated in an appropriat elabel
in thed rive r's field of vision.
RBreak-in ne wtires at moderat espeeds for
th ef irst 60 mile s(10 0k m).
RReplace thet ires af ters ixyearsatt he latest,
re ga rdless of wear.
RWhen replacing with tires that do no tfea‐
tu re run-flat characteristics: vehicles with
MOExtended tires ar enotequipped wit ha
TIREFIT kit at thef actor y.Equi pthe vehicle
wit haT IREFIT kit af terr eplacing wit htires th
at do no tfeatur erun- flat characteristics,
e.g .winter tires.
Fo rm orei nformation on wheels and tires, con‐
ta ct aq ualified specialis tworks hop.
Be sur etoalso observ ethe following fur ther
re lated subjects:
RNo tesont irep ressur e(→page312)
RTire and Loading Info rmatio nplacard
(→pag e319)
RTire pressur etable (→pag e314)
Note sonr otating wheels
&
WARNING Risk of injury thro ugh dif fer‐
ent whee lsizes
Inter changing thef ront and rear wheels if the
wheels or tires ha vediffere nt dimensions
ma yseverel yimp air thed riving characteris‐
tics.
The wheel brakes or wheel suspension com‐
ponent smayalso be damaged.
#Rotate front and rear wheels only ifth e
wheels and tires ar eofthe same dimen‐
sions.
The wear patte rnsont he front and rear wheels
dif fer:
RFr ont wheels wear mor eonthe shoulder of
th et ire
RRear wheels wear mor einthe center of the
tire
On vehicles that ha vethes ame size front and
re ar wheels,r otatet he wheels according tothe
inter vals in thet irem anufacturer's warranty
book in your vehicle documents. If this is not
av ailable, rotate thet ires every
3000 to6000 mile s(5000to1 0000 km),
depending on thew ear.Ensuret hat thed irection
of rotatio nism aintained.
It is impe rativ etoo bservethei nstruction sand
saf etyn otes on "Wheel change" when doings o.
Wheels and tires333
Page 371 of 446
Drivingsystems
Displa ymessages
Possible causes/consequences and MSolutions
À
ATTENTION ASSIST: Take a
Break!*A
TTENTION ASSIS Thas de tected fatigue or an increasing la ckof concentration on thep artoft he driver
(
→pag e184).
#If necessary ,tak eab reak.
À
ATTENTION ASSIST Inoper-
ative *A
TTENTION ASSIS Tismalfunctioning.
#Visit aq ualified specialis tworks hop.
ë
Off *T
he HOLD function is deactivated because thev ehicle is skidding or acondition fora ctivation is no tmet.
#Re activat ethe HOLD function later or checkt he activation conditions fort he HOLD function .
É
Vehicle Rising Please Wait *T
hevehicle le velist oo lo wandthev ehicle rises tothes elected vehicle le vel.
#Wa it until thed ispla ymessag edisappear sbefor epulling away.
Displ aymessage sand warning/indicator lamps 369