wheel MERCEDES-BENZ E-CLASS WAGON 2018 Repair Manual

Notes on care of vehicle parts
&
WARNING Risk of entrapment if the
windshield wipers are switch ed on while
th e windshield is being cleaned
If th e windshield wipers are set in motion
while you are cleaning the windshield or
wiper blades, you can betrapped bythe
wiper arm.
#Alw ays switch off the windshield wipers
and the ignition before cleaning the
windshield or wiper blades.
& WARNING Risk of burn s fromtailpipes
and tailpipe trim
The tailpipe and tailpipe trim can become
ve ry hot. If you come into contact withth ese
parts of theve hicle, you could burn yourself.
#Alw ays be particular lycareful around
th eta ilpipe and theta ilpipe trim.
#Allow theve hicle parts tocool down
before youto uch them.
Obser vethefo llowing information:
Information on cleaning and car eAvoiding vehicle damage
Wheels/rims Usewate r and acid-free wheel cleaners.
RDo not use acidic wheel cleaners toremo vebrake dust.
This could damage wheel bolts and brake components.
RTo avoid cor rosion of the brake discs and brake linings,
drive theve hicle for a few minutes af ter cleaning before
parking it. The brake discs and brake linings warm up and
dried out.
Wi ndo ws
Cleanthe windo wsonthe inside and outside using a damp
clo thand cleaning products recommended byMercedes-
Benz. Do not use dry clo
ths, abrasive products or cleaning agents
containing sol vents toclean the inside of the windo ws.
336
Maintenance and care

#Changetheflat tire immediately with
th e emer gency spa rewheel or spare
wheel. Alternativel y,consult a qualified
specialist workshop.
Ti re s with run-flat characteristics:
#Observ eth e information and warning
no tes on MOExtended tires (run-flat
tires).
In theeve nt of a flat tire, thefo llowing options
are available depending on your vehicle's equip‐
ment:
RVe hicles with MOExtended tires: it is pos‐
sible tocontinue the journey for a short
period of time. Make sure you observ eth e
no tes on MOExtended tires (run-flat tires)
(
→page 341).
RVe hicles with a TIREFIT kit: you can repair
th e tire so that it is possible tocontinue the
jou rney for a short period of time. Todo this,
use the TIREFIT kit (
→page 342).
RVe hicles with Mercedes-Benz
mbrace®(USA only): you can make a call for Ro
adside Assis tance via theove rhead control
panel in the case of a breakdown
(
→page 294).
RAll vehicles: change the wheel
(→page 384).
MOExtended tires (tires with run-flat proper‐
ties)
& WARNING Risk of accident when driving
in li mp-home mode
When driving in emergency mode the han‐
dling characteristics are impaired, e.g. when
cornering, when accelerating stronglyand
when braking.
#Do not exceed the specified maximum
speed.
#Av oid any abrupt steering and driving
maneuvers as well as driving over
obs tacles (curbs, pot holes, off-road).
This applies, in part icular,toa loaded
ve hicle.
#Stop driving in the emer gency mode if
yo u notice:
Rbanging noise
Rvehicle vibration
Rsmoke which smells like rubber
Rcontinuous ESP®inter vention
Rcrac ksin tire side walls
#After driving in emergency mode ha ve
th erims checkedby aqu alified special‐
ist workshop with rega rd totheir fur ther
use.
#The defective tire must be replaced in
eve rycase.
With MOExtended tires (run-flat tires), you can
continue todrive your vehicle even if there is a
tot al loss of pressure in one or more tires. How‐
eve r,th e tire af fected must not show any clearly
visible damage.
Yo u can recognize MOExtended tires bythe
MOExtended marking which appears onthe side
wa ll of the tire.
Breakdown assis tance 34
1

Vehicles with tire pressure monitoring sys‐
te m: MOExtended tires may only be used in con‐
junction wi than activated tire pressure monitor‐
ing sy stem.
If a pressure loss warning message appears in
th e multifunction display:
RCheck the tire for dama ge.
RIf driving on, obser vethefo llowing no tes.
Driving distance possible in limp-home mode
af te r the pressure loss warning:
Load condition Driving distance pos‐
sible in limp-homemode
Pa rtially laden 50 miles (80 km)
Fu lly laden 19miles (30 km)
RThe driving dis tance possible in li mp-home
mode may vary depending on the driving
st yle.
RMaximum permissible speed 50 mph
(80 km/h). If a tire has gone
flat and cannot be replaced
with an MOEx tended tire, you can use a stand‐
ard tire as a temp orary measure.
Using the TIREFIT kit
Ha ve thefo llowing readily available:
RTire sealant bottle
REnclosed TIREFIT sticke r
RTire inflation compressor
Yo u can use TIREFIT tire sealant toseal punctu‐
re s of up to0.16 in (4 mm), particular lythose in
th e tire conta ct surface.You can use TIREFIT in
outside temp eratures down to-4 °F (-20 °C).
&
WARNING Risk of accident when using
tire sealant.
In thefo llowing situations, the tire sealant is
unable toprov ide suf ficient breakdown assis‐
ta nce, as it is unable toseal the tire proper ly:
RThere are cuts or punctures in the tire
lar gerth an those pr eviously mentioned.
RThe wheel rim is dama ged.
RYo u ha vedriven at a very low tire pres‐
sure or on a flat tire.
#Do not continue driving.
#Consult a qualified specialist workshop.
&
WARNING Risk of injury and poisoning
from tire sealant
The tire sealant is harmful and causes ir rita ‐
tion. Do not allow it tocome into contact
wi th th e skin, eyes or clo thing, and do not
swallow it. Do not inhale tire sealant fumes.
Ke ep the tire sealant away from children.
If yo u come into contact withth e tire sealant,
obser vethefo llowing:
#Rinse off the tire sealant from your skin
immediately using water.
#If tire sealant gets into your eyes, thor‐
oughly rinse out theey es using clean
wate r.
342
Breakdown assis tance

#If tire sealant has been swallowed,
immediately rinse out the mouth thor‐
oughly and drink plenty of water.Do not
induce vomiting and seek medical
attention immediately.
#Change out of any clo thes conta mina‐
te d with tire sealant immediatel y.
#If allergicreactions occur, seek medical
attention immediatel y.
*NO
TEOverheating due tothe tire infla‐
tion compressor running too long
#Do not runth e tire inflation compressor
fo r longer than ten minu tes without
inter ruption.
Comply with the manufacturer's saf etyno tes in
th est icke r on the tire inflation compressor.
Ha ve the tire sealant bottle replaced everyfour
ye ars at a qualified specialist workshop.
#Do not remo veany fore ign objects which
ha ve penetra tedth e tire.
#Af fix pa rt1 ofthe TIREFIT sticke rto the
instrument clus ter within the driver's field of
vision.
#Af fix pa rt2 ofthe TIREFIT sticke r near the
va lve on the wheel with the defective tire.
#Pull plug 4with the cable and hose 5out
of the tire inflation compressor housing.
#Push the plug of hose 5into flange 6of
tire sealant bottle 1until the plug engages.
#Place tire sealant bottle 1head down wards
into recess 2ofthe tire inflation compres‐
sor.
Breakdown assis tance 34
3

Perm itted towing me thods
Bo th axles on thegr oundFront axle raisedRe ar axle raised
Ve hicles with manual transmission Yes, maximum 31miles (50 km) at
31 mp h (50 km/h) Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h) Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h)
Ve hicles with automatic transmis‐
sion Ye
s, maximum 31miles (50 km) at
31 mp h (50 km/h) No
Yes, if thesteering wheel is fixe d in
th e center position with a steering
wheel loc k.
4MATIC vehicles Yes, maximum 31miles (50 km) at
31 mp h (50 km/h) No
No
Towing wit h araised axle: towing should be
per form ed byato wing compan y.
Towing theve hicle with bo thaxles on the
gr ound
#Obser vethe no tes on the permitted towing
me thods (→page 351) (→page 352).
#Make sure that the battery is connected and
ch arge d.
When the battery is dischar ged:
Rthe engine cannot bestar ted.
Rth e electric parking brake cannot bereleased
or applied.
Rve hicles with automatic transmission: the
automatic transmission cannot be shif tedto
position iorj.
352
Breakdown assis tance

&WARNING Risk of accident due tolimi‐
te d saf ety-re lated functions during the
to wing process
Saf ety-re lated functions are limited or no lon‐
ge rav ailable in thefo llowing situations:
Rth e ignition is switched off.
Rthe brake sy stem or po werst eering sys‐
te m is malfunctioning.
Rth e energy supply or the on-board electri‐
cal sy stem is malfunctioning.
When your vehicle is then towe daw ay, signif‐
icantly more ef fort may be requ ired tosteer
and brake than is no rmally requ ired.
#Use a tow bar.
#Make sure that thesteering wheel can
mo vefreely, before towing theve hicle
aw ay.
* NO
TEDama gedue toexcessive tracti ve
po we r
Ifyo u pull away sharpl y,the tractive po wer
may be too high and theve hicles could be
damaged.
#Pull away slowly and smoo thly.
Loading the vehicle for transport
#Obser vethe no tes on towing away
(→page 352).
#Connect theto w bar totheto wing eyeto
load theve hicle.
#Ve hicles with automatic transmission:
Shift the automatic transmission toposition
i.
% Ve
hicles with automatic transmission:
The au tomatic transmission may be loc ked
in position jintheeve nt of damage tothe
electrical sy stem. Toshift toi, pr ovide the
on-board electrical sy stem with po wer
(
→page 348).
#Load theve hicle onto the transpor ter.
#Ve hicles with automatic transmission:
Shift the automatic transmission toposition
j.
#Use the electric parking brake tosecure the
ve hicle and pr event it from rolling away.
#Only secure theve hicle bythe wheels.
Ve hicles with ADS PLUS (Adaptive Damping
Sy stem PLUS)
&
WARNING Risk of an accident when
transporting vehicles with Adaptive
Damping Sy stem PLUS
The reduced damping forc es on theve hicle
being transpor ted can cause theve hicle/
trailer combination tostart toswing.
As a result, when transporting vehicles with
th eAd aptive Damping Sy stem PLUS, the
ve hicle/trailer combination may start toskid.
Consequentl y,yo u could lose cont rol of your
ve hicle.
#When transporting, ensure that:
354
Breakdown assis tance

RThevehicle has been loaded onto
th e transpor ter cor rectly
RThe vehicle is secured at all four
wheels with suit abletensioning
st ra ps
RThe maximum permissible speed of
35 mph (60 km/h) is not exceeded
when transporting
* NO
TEDama getotheve hicle from secur‐
ing it incor rectly
#Af ter loading, theve hicle must be
secured at all four wheels. Otherwise,
th eve hicle could be damaged.
#A minimum dis tance of 8 in (20 cm) up
and 4 in (10 cm) down must bekept to
th e transport platform.
#Secure theve hicle on all four wheels af ter
loading. 4MATIC
vehicles/ve hicles with automatic
transmission
#Make sure that the front and rear axles come
to rest on the same transport vehicle.
* NO
TEDama getothe driv etra in due to
incor rect positioning
#Do not position theve hicle abo vethe
connection point of the transport vehi‐
cle.
To wing eyesto rage location
Towing eye1 is attached tothe edge of the
cargo compart ment underthe cargo compart‐
ment floor.
Ve hicles with folding bench seat: Thetowing
ey e is located under a co ver.
Breakdown assis tance 355

Noise or unusual handling characteristics
While driving, pay attention tovibrations, noises
and unusual handling characteristics, e.g. pulling
to one side. This may indicate that the wheels or
tires are damaged. If you suspect that a tire is
defective, reduce your speed immediatel y.Stop
th eve hicle as soon as possible tocheck the
wheels and tires for dama ge. Hidden tire dam‐
age could also be causing the unusual handling
ch aracteristics. If youfind no signs of damage,
ha ve the tires and wheels checked at a qualified
specialist workshop.
Checking wheels and tires regular ly
&
WARNING Risk of accident from dam‐
aged tires
Dama ged tires can cause tire pressure loss.
As a result, you could lose cont rol of your
ve hicle.
#Check the tires regularly for signs of
dama geand replace any damaged tires
immediatel y.
&
WARNING Risk of aquaplaning due to
insuf ficient tire tread
Insuff icient tire tread will result in reduced
tire grip. The tire tread is no longer able to
dissipate water.
This means that in heavy rain or slush the
ri sk of hydroplaning is increased, in particu‐
lar if vehicle speed is not adap tedto suit the
conditions.
If th e tire pressure is too high or too lo w,
tires may exhibit dif fere nt le vels of wear at
dif fere nt locations on the tire conta ct sur‐
fa ce.
#Thus, you should regularly check the
tread de pth and the condition of the tire
conta ct surf ace across the entire width
of all tires.
Minimum tread dep thfor:
RSummer tires: âin (3 mm)
RM+S tires: ãin (4 mm)
#For saf etyre asons, replace the tires
before the legally prescribed limit for
th e minimum tread dep thisreached.
Car ryout thefo llowing checks on all wheels reg‐
ularly, at least once a month or as requ ired, e.g.
prior toa long journey or driving off- road:
RCheck the tire pressure (→page 361).
RVisual inspection of wheels and tires for
damage.
RCheck theva lve caps.
The valves must be pr otected against mois‐
ture and dirt bytheva lve caps appr oved
especially foryo ur vehicle byMercedes-Benz.
RVisual check of the tread dep thand the tire
conta ct surf ace across the entire width.
The minimum tread dep thfor summer tires is
â in (3 mm) and for winter tires ãin
(4 mm).
360 Wheels and tires

Six marks1 show where the bar indicators
(ar row ) are integrated into the tire tread. They
are visible once a tread dep thof appr oximately
á in (1.6 mm) has been reached.
Note s on snow chains
&
WARNING Risk of accident due toincor‐
re ct mounting of snow chains
If yo u ha vemounted snow chains tothe front
wheels, the snow chains may drag against
th eve hicle body or chassis components.
This could cause damage totheve hicle or
th e tires.
#Ne ver mount snow chains on the front
wheels.
#Only mount snow chains on there ar
wheels in pairs.
* NO
TEDama getothe wheel trim from
mounted snow chains
If snow ch ains are mounte dto steel wheels,
th e wheel trims can be damaged.
#Re mo vethe wheel trims of steel wheels
before mounting snow chains.
RSn ow chains are only pe rmissible for cer tain
wheel/tire combinations. You can obtain
information about this from an authorized
Mercedes-Benz Center.
RFo r saf etyre asons, only use snow ch ainsthat
ha ve been specifically appr oved foryo ur
ve hicle byMercedes-Benz, or snow chains
with the same quality standard.
RIf snow ch ains are moun ted, the maximum
permissible speed is 30 mph (50 km/h).
RVehicles with Parking Pilo t:Do no t use
Pa rking Assist PARKTRONI Cif sn ow ch ains
are mounte d.
RVehicles with AIR BODY CONT ROL:If snow
ch ains are mounte d, only drive atraised vehi‐
cle le vel.
% You can deactivate ESP
®to pull away
(→page 170). This allo wsthe wheels tospin,
achieving an increased driving forc e.
Tire pressure
Note s on tire pressure
&
WARNING Risk of accident due toinsuf‐
fi cient or excessive tire pressure
Underinfla ted or overinfla ted tires pose the
fo llowing risks:
RThe tires may bur st, especially as the
load and vehicle speed increase.
Wheels and tires 361

RThe tires maywearexc essively and/or
une venly, which may greatlyimpair tire
traction.
RThe driving characteristics, as well as
st eering and braking, may be greatly
impaired.
#Comply with there commended tire
pressure and check the tire pressure of
all tires including the spare wheel regu‐
larly:
Rat least once a month
Rwhen the load changes
Rbefore embarking on a longe r journey
Rif operating conditionschange, e.g. off-
ro ad driving
#Ad just the tire pressure as necessar y.
Driving withtire pressure that is too high or too
low can:
RSho rten the service life of the tires.
RCause increased tire damage.
RAd versely af fect handling characteristics and
th us dr iving saf ety, e.g. due to hydroplaning.
&
WARNING Risk of an accident due to
insuf ficient tire pressure
Ti re s with pressure that is too low can over‐
heat and bur stas a result.
In addition, they also suf fer from excessive
and/or ir regular wear, which can significantly
impair the braking properties and the han‐
dling characteristics.
#Av oid excessively low tire pressures in
all the tires, including the spare wheel.
Tire pressure which is too low can cause:
RTire defects as a result of overheating
RImpaired handling characteristics
RIrre gular wear
RIncreased fuel consum ption
&
WARNING Risk of accident from exces‐
sive tire pressure
Ti re s with excessively high pressure can
burs t because they are damaged more easily
by highw ayfill, pot holes etc.
In addition, they also suf fer from ir regular
we ar, which can significantly impair the brak‐
ing properties and the handling characteris‐
tics.
#Av oid excessively high tire pressures in
all the tires, including the spare wheel.
Excessively high tire pressure can result in:
RIncreased braking dis tance
RImpaired handling characteristics
RIrre gular wear
RImpaired driving com fort
RSusceptibility todamage
362
Wheels and tires