If it is no
tpossible toengag eall-wheel driv ewhen
th ev ehicle is rolling: #
Vehicles with automatic transmission:
brief lymo vethes elector le verto005C . Engaging/disen
gaging all-wheel drive *
NO
TERisk of damag etothe transfer
case If
yo us tepont he accelerator pedal while the
all-wheel driv eisengaged or disen gage d, the
trans ferc ase ma ybedamaged. #
Do no tstepont he accelera torp edal
when thei ndicator lam pinthe switch
fo rt he all-wheel driv eisflashing. #
Toengage/disen gage: press theu pper sec‐
tion of switch 1.
The indicator lam pinswitch 1flashes while
th ea ll-wheel driv eisengaged or disengaged.
The 00E5 and003D warning lamps light up in
th ei nstrument displa y.ESP ®
and ASR are
deacti vatedf or thed uration of thes hifto per‐
ation. If thes hifto peration is successful, the
00E5 and003D warning lamps in thei nstru‐
ment displa ygoout and ESP ®
and ASR are
re activated.
As lon gasthe indicator lam pinswitch 1is
fl ashing, youc an cancel thes hifto peration by
pressing switch 1again. If thes hifto peration
fa ils, thei ndicator lam pinswitch 1brief ly
fl ashes thre et imes. One of thes hiftconditions
wa sn otmet.
If th ei ndicator lam pinswitch 1lights up, all-
wheel driv eisengaged. Arele vant messa ge
appear sinthe displa yofthe on-boar dcomputer. %
If
th eL OW RANGE gear reduction is engaged,
th ea ll-wheel driv ecann otbe disengaged. Fu
nction of theL OW RANGE gear reduction The
LOWR ANGE gear reduction enables very
slo wd riving in ther espectiv egears. If youe ngage
LO WR ANGE, thee ngine' sperform anc echarac‐
te rist ics and thea utomatic transmission's shift‐
ing characteristic sareadjus teda ccording ly.T he
transmission ratio from thee ngine tothew heels
is around 40% lo werthan in ther oad posi tion.
The driv etorque is increased cor respondingly.
Conditions fore ngaging/disengaging
Th ef ollowing shifting condition smustbem etin
order toengag eordisengag eLOW RANGE:
R All-wheel driv eisengaged (/ page119).
R Thee ngin eisr unning.
R Thev ehicle is stationar y.
R Youd epress theb rake pedal.
R Vehicles with automatic transmission: the
selector le verisinp osition005Dor005C. Engaging and disen
gaging LOW range 1
Enga ging and disengaging LOWr ange
% On
vehicles wit hDSR (Downhill Speed Regu‐
lation), switch 1isreplaced wit hthe switch
fo rD SR. Driving and parking
11 9
st
yletos uitthep reva iling road and weather con‐
ditions.
If yo ua ctivat eord eactivat ethe all-wheel driv ein
av ehicle wit hthis option, ASR will be deactivated
fo rt he duration of thea ctivation/deactivation
process.
Ve hicles without steering wheel but tons: if
ASR is malfunctioning, the00E5 indicator lamp
lights up while thee ngine is running and the
engine output ma ybereduced (/ page23).
ASR impr ovestraction, i.e. thet ransfer of po wer
from thet ires tother oad sur face, foras ustained
period and, thereb y,also impr ovesthe driving
st abilit yoft hevehicle. If thed riving wheels start
to spin, ASR brakes individuald rive wheels and
limits thee ngine torque. ASRthus significantly
assists youw hen pullin gawaya nd accelerating,
especiall yonw etor slippe ryroads.
If traction on ther oad sur face is no tsufficient,
eve nASR will no tallow youtop ullaway without
dif ficulty .The typ eoftires and totalwe ight of the
ve hicle as well as theg radient of ther oad also
pla yac rucial role.
If AS Rinter venes, the00E5 warning lam pinthe
instrument display flashes. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning ,ESP ®
canno tcarry
out vehicle stabilization. In addition ,other
driving saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have ESP ®
ch eckedataq ualified spe‐
cialis tworks hop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo ud eactivat eESP®
,E SP ®
canno tcarry out
ve hicle stabilization. #
ESP ®
shoul donlybed eactivated in the
fo llowing situations. Do no
topera tethev ehicle on aroller dynamo me‐
te r( e.g. forap erform anc etest). If youh ave to
operat ethe vehicle on aroller dynamo meter,con‐
sult aqualified specialis tworks hop beforehand. If
yo ua ctivat eord eactivat ethe all-wheel driv ein
av ehicle wit hthis option, ESP ®
will be deactiva‐
te df or thed uration of thea ctivation/deactiva‐
tion process.
If ESP ®
is malfunctioning or deactivated, the
00E5 warning lam plight supw hilethee ngine is
ru nning and thee ngine output ma ybereduced
(/ page23).
% Onl
yuse wheels wit hthe recommended tire
sizes. Only then will ESP ®
function properly. Ac
tivating/deactivatin gESP®
(Electronic Sta‐
bility Prog ram) On-boa
rdcompu ter:
4 Settings 5
DriveAssist 5
ESP (ESP) #
Select Ein(On) or Aus00BB (Off). Fu
nctions of ESP ®
Crosswind Assist Crosswind Assis
tdoes no tworkifE SP®
is deacti‐
va tedord isabled due toam alfunction.
Crosswind Assis tdoes no treact under thef ollow‐
ing conditions:
R The vehicle is subjected tosevere jolts and
vib rations, e.g .asar esult of une vens urfaces
or po tholes.
R The vehicle loses traction, e.g. on sno worice
or when hydroplaning.
R The driver is per form ing sudden and lar ge
st eering mo vements.
Crosswind Assis tisoperational again as soon as
th ed riving conditions retur nton ormal.
Crosswind Assi stdetects stro ng crosswind gu sts
th at can impair abilit yofyourvehicle todrive
st ra ight ahead. Crosswin dAssis tinter venes
depending on thed irection and stre ngt hoft he
crosswind.
As tabilizing brak eapplicatio nhelps youtok eep
th ev ehicle on trac k.
Information is shown in thei nstrument clus terin
th ee vent of aclearly discernible inter vention by
Crosswind Assist.
Crosswind Assis tisactiveabove avehicle speed
of 50 mph(80 km/h )whent he vehicle is driving
st ra ight ahead or cornering gently. 13 8
Driving and pa rking
&
WARNING Risk of inju ryfrom tightening
whee lbolts and nuts
If yo ut ighten thew heel bolts or wheel nuts
when thev ehicle is raised, thej ackc ould tip. #
Onlytighten wheel bolts or wheel nuts
when thev ehicle is on theg round. #
Obser vethei nformation on thec hoice of
tires (/ page218). #
Fors afet yr easons, onl yuse wheel bolt sor
wheel nut swhichh aveb een appr ovedby
Mercedes-Benza ndfort he wheel in question.
When youi nstallth es teel spar ewheel, it is
essential youu se shor twheel bolt sfor as teel
wheel. Using other wheel bolts when ins talling
th es teel spar ewheel ma ylead todamag etothe
brak esystem. 1
Wheel bolt fora lloy wheels
2 Wheel bolt fors teel wheel #
Clean thew heel and wheel hub contact sur fa‐
ces. #
Vehicles with Super Single tires: first
ins tallth ea dap terf or then arro ws parew heel
on thew heel hub. #
Slide then ew wheel whic histobeinstalled
ont othe wheel hub or thea dap terf or the
spar ewheel and push it on. #
Slide then ew wheel whic histobeinstalled
ont othe wheel hub and push it on.
Wheels centered using thew heel bolts: #
Vehicles wit halloyw heels: use thes hort
wheel bolts fort he steel spar ewheel from the
ve hicle tool kit. #
Screw inthew heel bolts until they aref inger-
tight.
Wheels with wh eeln uts: #
Front wheels wit hwheel nut co ver:press the
wheel nut co vero ntot he wheel nuts. #
Screw inthre ew heel nuts overthe fixing
discs of thew heel nut co ver. #
Turn thew heel so that thew heel bolts ar ein
th em iddle of theh oles. #
Screw inther emaining wheel nuts. #
Slightly tigh tena llth ew heel nuts. Lo
weri ngthev ehicle af teraw heelchange &
WARNING Risk of inju rythro ugh incor‐
re ct tigh tening torque
Th ew heel scould come loose if thew heel
bolts or wheel nuts ar enottightened tothe
prescribed tightening torque. #
Makesur ethe wheel bolts or wheel
nuts ar etightened tothep rescribed
tightening torque. #
Ifyo ua renots ure, do no tmovet he
ve hicle. Consult aqualified specialist
wo rkshop and ha vethet ightening tor‐
qu ec hec kedi mmediately. Re
quirements:
R The ne wwheel has been ins talled
(/ page223).
Obser vethen otes on raising thev ehicle
(/ page221).
Ve hicles with rear wheel drive
Only use them iddle roda nd thep um pleve rrod
wit hthe larges tdiame terf or thej ackasa lug
wrenc hextension. Only inse rtthem iddle rodon
th el ug wrench, and alw aysasf ar as it will go.
Otherwise, ther ods could bend and defor mso
muc hthat they can no longer be use daspump
le ve rs fort he jac k.
Ve hicles wit hSuper Single tires: if youm ountthe
spar ewheel tother ear axle, do no texceed the
maximu mspeed of 34 mph(55 km/h) and the
maximu mdista nce of 62 miles (100 km) .Other‐
wise, thet ransmission could be damaged due to
th ed iffe re nt rotational speed softhe wheels. #
Using thep um pleve r,slowly tur nthe drain
scr ew onthej acka ppr oximatel yone revo lu‐
tion and carefull ylow erthev ehicle. 224
Wheels and tires
#
Place thej acktoo ne side. #
Pull ther od wit hthe smalles tdiame tero ffthe
pum pleve r.
The shor tened pu mpleve rs erve sasal ug
wrenc hextension. #
Startin gwitht he middle rod, slide thel ug
wrenc hextensio nasfar as it will go ont othe
lug wrench. #
Tighten thew heel bolts or nuts evenlyint he
sequence indicated (1 to6 ).
Specified tightenin gtorque:
R Steel wheel bolts: 177l b-f t(24 0N m)
R Whee lnuts: 133lb-f t(18 0N m)
R Alloywheel bolts: 133lb-f t(18 0N m) #
Push thep isto nont hehydraulic jac kinagain
and close thep ressur erelease scr ew. #
Vehicles with all-wheel drive: turnthe jack
spindle clockwise as farasitw illg o.
% Yo
uc an no winstallth eh ub caps on steel
wheels wit hwheel bolts. The ins tallation pro‐
cedur edepends on whe ther theh ub cap acts
as atrimt hat co vers thew hole wheel, or just
co vers thec enter. #
Wheel wit hhub cap: position theo pening for
th et irev alveint he hub cap overthe tire
va lve. #
Push thee dgeoft he hub cap ont othe wheel
ri mw ithb othh ands until it engages into
place. Mak esuret he hub cap retaining
cat ches engag eonthesteel wheel. #
Wheel with central hub cap: positionthe
re tainin glugs of thec ent ralh ub cap overthe
whee lbolts. #
Hitthem iddle of theh ub cap toengag eiton
th ew heel. #
Secur ethe faulty wheel in thes par ew heel
brac ket. #
Vehicles with Super Single tires: transport
th ed efectiv erear wheel in thel oad area. The
re ar wheel is tool arge fort he spar ewheel
brac ket. #
Chec kthe tir epressur eoft he newl yins talled
wheel and adjus titifnecessar y. #
Retighten thew heel bolts or wheel nuts tothe
specified tightening torque af tert he vehicle
has been driven 31miles (50 km). #
When using awhee lors parew hee lwitha
ne worn ewly painted whee lrim, ha vethe
wheel bolt sornutsr etightene dafter appr ox‐
ima tely 620 mile s(1,000 km) to3,10 0m iles
(5,000 km).
% Ve
hicles with thet irep ressur emonitor
sy stem: all ins talled wheels mus tbeequip‐
ped wit hfunctioning sensors.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubject:
R Notesont irep ressur e(/pag e204) Spar
ewheel Note
sont he spar ewheel &
WARNING Risk of accident caused by
incor rect wheel and tir edimensions
Wheel and tir edimensions as well as thet ype
of tir emayvary between thes par ew heel and
th ew heel tobe replaced. When thes pare
wheel is ins talled, driving characteristic smay
be se verely af fected.
To prev ent hazardous situations: #
Adapty our driving stylea ccording lyand
driv ecarefull y. #
Neverins tall mor ethan one spar ewheel
th at dif fers from thew heel tobe
re placed. #
Onlyusethes par ew heel that dif fers
from thew heel tobe replaced fora
shor ttime. #
Do no tswitc hoffESP ®
. #
Have thes par ew heel of adiffe re nt size
re placed at then eares tqualified spe‐
cialis tworks hop. The wheel and tire Wheels and tires
225