run flat MERCEDES-BENZ GLC SUV 2017 X253 Owner's Manual

Emissions controlService and warranty information .... 28
Engine
Check Engine warning lamp .......... .263
Display message ............................ 240
ECO start/stop function ................ 136
Engine number ............................... 364
Irregular running ............................ 138
Jump-starting ................................. 328
Starting (important safety notes) ... 133
Starting problems .......................... 138
Starting the engine with the
SmartKey ....................................... 134
Starting via smartphone ................ 134
Starting with the Start/Stop but-
ton ................................................. 134
Switching off .................................. 155
Tow-starting (vehicle) ..................... 333
Engine electronics
Problem (malfunction) ................... 138
Engine oil
Adding ...........................................3 08
Additives ........................................ 368
Checking the oil level ..................... 307
Checking the oil level using the
dipstick .......................................... 308
Display message ............................ 242
Filling capacity ............................... 368
General notes ................................ 367
Notes about oil grades ................... 367
Notes on oil level/consumption .... 307
Temperature (on-board computer,
Mercedes-AMG vehicles) ...............2 24
Entering an address
see also Digital Operator's Man-
ual ..................................................2 68
ESP
®(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 225
Characteristics ................................. 70
Crosswind Assist .............................7 3
Deactivating/activating (button
in Mercedes-AMG vehicles) .............7 1
Deactivating/activating (notes,
except Mercedes-AMG vehicles) ...... 70
Deactivating/activating (on-
board computer, except
Mercedes-AMG veh icle
s) ............... 220 Display message ............................ 228
Function/notes ................................ 70
General notes .................................. 70
Important safety information ........... 70
Trailer stabilization ........................... 73
Warning lamp ................................. 259
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 70
Exhaust
see Exhaust pipe
Exhaust check ................................... 158
Exhaust pipe
Cleaning ......................................... 316
Exterior lighting
Cleaning ......................................... 315
Setting options .............................. 111
see Lights
Exterior mirrors
Adjusting ....................................... 107
Dipping (automatic) ....................... 108
Folding in/out (automatically) ....... 107
Folding in/out (electrically) ........... 107
Out of position (troubleshooting) ... 108
Setting ........................................... 107
Storing settings (memory func-
tion) ............................................... 109
Storing the parking position .......... 108
Eyeglasses compartment ................. 279
F
Favorites
Overview ........................................ 271
Features ............................................. 290
Filler cap
see Refueling
Flat tire
Changing a wheel/mounting the
spare wheel ................................... 356
MOExtended tires .......................... 321
Preparing the vehicle ..................... 321
TIREFIT kit ...................................... 322
Floormats ........................................... 305
Frequencies
Mobile phone ................................. 362
Two-way radio ................................ 362
Front wheel arch
Removing/installing the cover ....... 117
Index11

ProblemPossible causes/consequences andMSolutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult or a per-
son of a stature corre-
sponding to that of an
adult.The classification of the person on the front-passenger seat is incor-
rect.
XMake sure the conditions for a correct classification of the person
on the front-passenger seat are met (Ypage 51).
XIf the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used.
XHave OCS checked as soon as possible at an authorized Mercedes- Benz Center.
The PASSENGER AIR
BAG OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger seat
is:
Runoccupied
Roccupied with the
weight of a child up to
twelve months old in a
child restraint system
OCS is malfunctioning.
XMake sure there is nothing between the seat cushion and the child
seat.
XMake sure that the entire base of the child restraint system rests on
the seat cushion of the front-passenger seat. The backrest of the
forward-facing child restraint system must lie as flat as possible
against the backrest of the front-passenger seat. If necessary,
adjust the position of the front-passenger seat.
XMake sure that the seat cushion length is fully retracted.
XWhen installing the child restraint system, make sure that the seat
belt is tight. Do not pull the seat belt tight using the front-passenger seat adjustment. This could result in the seat belt and the child
restraint system being pulled too tightly.
XCheck for correct installation of the child restraint system.
Make sure that the head restraint does not apply a load to the child
restraint system. If necessary, adjust the head restraint accord-
ingly.
XMake sure that no objects are applying additional weight onto the
seat.
XIf the PASSENGER AIR BAG OFF indicator lamp remains off and/or
the PASSENGER AIR BAG ON indicator lamp lights up, do not install a child restraint system on the front-passenger seat. It is recom-
mended that you install the child restraint system on a suitable rear
seat.
XHave OCS checked as soon as possible at an authorized Mercedes-Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag has
been deployed. There is a risk of injury.
Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified spe-
cialist workshop as soon as possible.
GWARNING
A deployed air bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.
Have the vehicle towed to a qualified special-
ist workshop in order to have a deployed air
bag replaced.
It is important for your safety and that of your
passenger to have deployed air bags replaced
Occupant safety55
Safety
Z

Tires
Display messagesPossible causes/consequences andMSolutions
CheckTirePressureSoonCanada only:
The tire pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible causes:
Ryou have changed the positions of the wheels and tires or installed
new wheels and tires
Rthe tire pressure in one or more tires has dropped significantly
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may be
greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 154).
XCheck the tires and, if necessary, follow the instructions for a flat
tire (Ypage 321).
XCheck the tire pressures and, if necessary, correct the tire pressure.
XRestart the tire pressure loss warning system when the tire pres-
sure is correct (Ypage 343).
CheckTirePressureThen Restart RunFlat Indicator
Canada only:
The tire pressure loss warning system generated a display message
and has not been restarted since.
XSet the correct tire pressure in all four tires.
XRestart the tire pressure loss warning system (Ypage 343).
Run Flat IndicatorInoperativeCanada only:
The tire pressure loss warning system is faulty.
XVisit a qualified specialist workshop.
PleaseCorrectTirePressureThe tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressures at the next opportunity (Ypage 345).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 345).
250Displa y messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Check TiresThe tire pressurein on eor mor etires has dropped significantly. The
whee lposition is displayed in th emultifunction display.
A warning tone also sounds.
GWARNIN G
Tir epressures that are to olow pos eth efollowin ghazards :
Rthey may burst, especially as th eload and vehicl espeed increase.
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthedrivin gcharacteristics ,as well as steering and braking ,may be
greatl yimpaired.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 154).
XCheckth etires and ,if necessary, follow th einstruction sfor aflat
tire (Ypage 321).
XChec kth etire pressur e (Ypage 345).
XIf necessary, correc tth etire pressure.
Warnin gTir eMal ‐functionThe tire pressur ein on eor mor etires has dropped suddenly. The whee l
position is shown in th emultifunction display.
GWARNIN G
Drivin gwit h a flat tire poses aris kof th efollowin ghazards :
Raflat tire affects th eabilit yto steer or brak eth evehicl e
Ryou could lose control of th evehicl e
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-up
and possibl y afire
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 154).
XCheckth etires and ,if necessary, follow th einstruction sfor aflat
tire (Ypage 321).
TirePress.Monito rCurrently Unavaila‐ble
Becausethere is interferenc efrom astron gsource of radi owaves, no
signals from th etire pressur esensor sare detected. The tire pressur e
monitor is temporarily malfunctioning .
XDrive on.
The tire pressur emonitor restarts automatically as soo nas th e
problem has been resolved.
TirePress .Sen ‐sor(s) Missin gThere is no signal from th etire pressur esensor of on eor several tires .
The pressur eof th eaffecte dtire is no tdisplayed in th emultifunction
display.
XHav eth efault ytire pressur esensor replace dat aqualified special -
ist workshop .
Display messages251
On-board computer and displays
Z

Flat tire
Preparing the vehicle
Your vehiclemay be equipped with:
RMOExtended tires (tires wit hrun-flat proper -
ties) (Ypage 321)
Vehicl epreparation is no tnecessar yon vehi-
cle swit hMOExtended tires
RaTIREFI Tkit (Ypage 320)
Vehicles equipped wit hMOExtended tires are
no tequipped wit h aTIREFI Tkit at th efactory. It
is therefor erecommended that you additionally
equip your vehicl ewit h a TIREFI Tkit if you moun t
tires that do no tfeature run-flat properties, e.g.
winte rtires . ATIREFI Tkit may be obtained from
a qualified specialist workshop.
Information on changing and mounting wheels
(
Ypage 357).
XStop th evehicl eon solid, non-slippery and
leve lground ,as far away as possible from
traffic.
XSwitc hon th ehazard warning lamps.
XSecur eth evehicl eagainst rollin gaway
(Ypage 154).
XIf possible ,brin gth efron twheels int oth e
straight-ahead position .
XSwitchoff th eengine.
XRemove th eSmartKey from th eignition lock.
or, in vehicles wit hKEYLESS-GO start-function
or KEYLESS‑ GO
XOpen thedriver' sdoor .
The vehicl eelectronics are no win position
u. This means: "Key removed".
XRemove th eStart/Sto pbutto nfrom th eigni-
ti on loc k (Ypage 133).
XMakesure that th eengin ecanno tbe started
via your smartphon e (Ypage 134).
XMakesure that th epassenger sare no tendan -
gered as they do so. Mak esure that no on eis
near th edanger area while awhee lis bein g
changed. Anyon ewho is no tdirectly assisting
in th ewhee lchang eshould, for example ,
stand behind th ebarrier.
XGet out of th evehicle. Pay attention to traffic
condition swhen doin gso.
XClose th edriver' sdoor .
Vehicles with MOExtended tires (tires
with run-flat characteristics)
General notes
Wit hMOExtended tires (tires wit hrun flat char-
acteristics), you can continue to driv eyour vehi-
cle eve nif there is atotal loss of pressur ein on e
or mor etires .The affected tire must no tsho w
any clearly visible damage.
You can recognize aMOExtended tire by th e
MOExtended markin gwhic happear son th e
sidewall of th etire. You will fin dthis markin g
next to th etire siz edesignation ,th eload-bear -
ing capacit yand th espee dindex (
Ypage 351).
MOExtended tires may only be used in conjunc -
tion wit han active tire pressur eloss warning
system or wit han active tire pressur emonitor.
If apressure loss warning messag eappears
in th emultifunction display:
Robserv eth einstruction sin th edisplay mes -
sage s (Ypage 250).
Rcheck th etire for damag e
Rif driving on,observ eth efollowin gnote s
The driving distanc epossible in run-flat mod eis
approximately 50 mile s(80 km) when th evehi-
cle is partially laden .When th evehicl eis fully
laden it is approximately 19 mile s(30 km).
In addition to th evehicl eload, th edriving dis-
tance possible depend supon :
RVehicl espee d
RRoad condition
ROutside temperature
The driving distanc epossible in run-flat mod e
may be reduce dby extreme driv ing condi
tion
s
or maneuvers, or it can be increased throug h a
moderat estyle of driving .
The driving distanc epossible in run-flat mod eis
counted from th emomen tth etire pressur eloss
warning appear sin th emultifunction display.
You must no texcee d amaximum permissible
spee dof 50 mph (80 km/h).
When replacing on eor all tires ,pleas eobserv e
th efollowin gspecification sfor your vehicle's
tires :
Rsize
Rthetyp eand
Rth e"MOExtended" markin g
If atire has gon eflat and canno tbe replace d
wit h a MOExtended tire, astandard tire may be
used as atemporar ymeasure. Mak esure that
Flat tire321
Breakdown assistance

you use theproper siz eand typ e(summer or
winte rtires).
Vehicles equipped wit hMOExtended tires are
no tequipped wit h aTIREFI Tki tat th efactory. It
is therefor erecommended that you additionally
equip your vehicl ewit h a TIREFI Tki tif you moun t
tires that do no tfeature run-flat properties, e.g.
winte rtires . ATIREFI Tki tmay be obtained from
a qualified specialist workshop .
Important safety notes
GWARNIN G
Whe ndrivin gin emergenc ymode, th edrivin g
characteristics deteriorate ,e.g. when corner-
ing, accelerating quickl yand when braking.
There is aris kof an accident.
Do no texceed th estate dmaximum speed.
Avoid abrup tsteerin gand drivin gmaneuvers ,
and drivin gove robstacles (curbs ,potholes,
off-road). This applies in particular to aladen
vehicle.
Stop drivin gin emergenc ymod eif:
Ryou hear bangin gnoises .
Rthevehicl estart sto shake.
Ryou see smok eand smell rubber.
RES P®is intervenin gconstantly.
Rthere are tears in th esidewalls of th etire.
Afte rdrivin gin emergenc ymode, hav eth e
whee lrim schecke dat aqualified specialist
workshop wit hregard to their further use. The
defective tire mus tbe replaced in every case.
TIREFIT kit
Impor tant safety notes
TIREFITis atire sealant .
You can use TIREFI Tto seal punctures of up to
0.16 in (4 mm), particularl ythose in th etire
tread. You can use TIREFI Tat outside tempera-
tures down to Ò4 ‡ (Ò20†).
GWARNING
In th efollowin gsituations, th etire sealant is
unable to provid esufficien tbreakdown assis-
tance ,as it is unable to seal th etire properly:
Rthere are cut sor punctures in th etire larger
than those mentioned above.
Rth ewhee lrim is damaged.
Ryou hav edriven at ver ylow tire pressures or
on aflat tire.
There is aris kof an accident.
Do no tdrive th evehicle. Contac t aqualified
specialist workshop .
GWARNING
The tire sealant is harmful and causes irrita-
tion .It mus tno tcome into contact wit hyour
skin ,eyes or clothin gor be swallowed .Do no t
inhale TIREFI Tfumes. Kee ptire sealant away
from children .There is aris kof injury.
If you come into contact wit hth etire sealant ,
observ eth efollowing:
RRinse off th etire sealant from your skin
immediately wit hwater.
RIf th etire sealant comes into contact wit h
your eyes ,immediately rinse them thor-
oughly wit hclean water.
RIf tire sealant is swallowed ,immediately
rinse your mout hout thoroughl yand drink
plenty of water. Do no tinduc evomiting,
and see kmedica lattention immediately.
RImmediately chang eout of clothin gwhic h
has come into contact wit htire sealant .
RIf an allergic reaction occurs, see kmedica l
attention immediately.
!Afte ruse, excess tire sealant may run out of
th efiller hose. This could caus estains.
Therefore ,plac eth etire sealant bottl ewit h
filler hos ein th eplastic bag whic his con-
taine din th eTIREFI Tkit.
HEnvironmental not e
Hav eth eused tire sealant bottl edispose dof
professionally, e.g. at aqualified specialist
workshop .
322Flat tire
Breakdown assis tance

!Do not operate the tire inflation compressor
for longer than ten minutes at a time without
a break. It may otherwise overheat.
The tire inflation compressor can be operated
again once it has cooled down.
Comply with the manufacturer’s safety instruc-
tions on the sticker on the tire inflation com-
pressor.
Using the TIREFIT kit
XDo not remove any foreign objects which have
penetrated the tire, e.g. screws or nails.
XRemove the tire sealant bottle, the accompa-
nying TIREFIT sticker and the tire inflation
compressor from the stowage well under-
neath the cargo compartment floor
(
Ypage 320).
XAffix part :of the TIREFIT sticker to the
instrument cluster within the driver's field of
vision.
XAffix part ;of the TIREFIT sticker near the
valve on the wheel with the defective tire.
XPull connector ?with cable and hose Aout
of the tire inflation compressor housing.
XPush connector on hose Ainto flange Bon
tire sealant bottle :until the connector
engages.
XPlace tire sealant bottle :head down into
recess ;of the tire inflation compressor.
XRemove the cap from valve Con the faulty
tire.
XScrew filler hose Donto valve C.
XInsert plug ?into cigarette lighter socket
(Ypage 292) or into another 12 V socket in
your vehicle (Ypage 293).
XTurn the SmartKey to position 1in the igni-
tion lock (Ypage 132).
XPress on and off switch =on the tire inflation
compressor.
The tire inflation compressor is switched on.
The tire is inflated.
First, tire sealant is pumped into the tire. The
pressure may briefly rise to approximately
500 kPa (5 bar/73 psi).
Do not switch off the tire inflation com-
pressor during this phase.
XLet the tire inflation compressor run for a
maximum of ten minutes. The tire should then
have attained a pressure of at least 200 kPa
(2.0 bar/29 psi).
If a pressure of 200 kPa (2.0 bar/29 psi) has
been attained after five minutes, see "Tire pres-
sure reached" (
Ypage 324).
If a tire pressure of 200 kPa (2.0 bar/29 psi) has
not been attained after five minutes, see "Tire
pressure not reached" (
Ypage 324).
If tire sealant has escaped, clean it off affected
areas as quickly as possible. Use plain water if
possible.
Flat tire323
Breakdown assistance
Z

Important safety notes
GWARNING
If wheels and tires of th ewrong siz eare used,
th ewhee lbrakes or suspension component s
may be damaged. Ther eis aris kof an acci-
dent.
Always replace wheels and tires wit hthose
that fulfill th especification sof th eoriginal
part .
When replacing wheels, mak esur eto use th e
correct:
Rdesignation
Rmodel
When replacing tires ,mak esur eto use th e
correct:
Rdesignation
Rmanufacturer
Rmodel
GWARNIN G
A flat tire severely impairs th edriving ,steer -
ing and braking characteristics of th evehicle.
Ther eis aris kof accident.
Tires without run-flat characteristics :
Rdo notdriv ewit h a flat tire.
Rimmediately replace th eflat tire wit hyour
emergenc yspar ewhee lor spar ewheel, or
consult aqualified specialist workshop.
Tires wit hrun-flat characteristics :
Rpay attention to theinformation and warn -
ing notice son MOExtended tires (tire swit h
run-flat characteristics).
Accessories that are no tapprove dfor your vehi-
cle by Mercedes-Ben zor are no tbein gused cor-
rectl ycan impair th eoperating safety.
Before purchasing and usin gnon-approve d
accessories, visit aqualified specialist work-
sho pand inquire about :
Rsuitability
Rlegal stipulation s
Rfactory recommendation sFurther information regarding wheels and tires
can be foun
dunder "Wheel/tire combinations"
(
Ypage 360).
You can ask for information regarding permitte d
wheel-tire combination sat an authorize d
Mercedes-Ben zCenter.
Information on tire pressur ecan be found:
Ron th eTir eand Loading Information placard
on th eB-pillar on th edriver' sside
(
Ypage 346)
Rin th etire pressur etable in th efuel filler flap
(Ypage 339)
Runder "Tir epressure" (Ypage 339)
Operation
Information on driving
Checkth etire pressur ewhen th evehicl eis
heavily laden and adjust prio rto atrip.
While driving ,pay attention to vibrations, noises
and unusual handlin gcharacteristics ,e.g. pull-
ing to on eside .This may indicat ethat th e
wheels or tires are damaged. If you suspec tthat
a tire is defective, reduce your spee dimmedi-
ately. Stop th evehicl eas soo nas possible to
chec kth ewheels and tires for damage. Hidden
tire damag ecould also be causing th eunusual
handlin gcharacteristics .If you fin dno sign sof
damage, hav eth etires and wheels checke dat a
qualified specialist workshop.
When parking your vehicle, mak esur ethat th e
tires do no tget deformed by th ecur bor other
obstacles. If they canno tbe avoided, driv eove r
obstacles suc has curbs slowly and at an obtuse
angle. Otherwise, you may damag eth ewheels
or tires .
Regular checking of wheels and tires
GWARNIN G
Damaged tires can caus etire inflation pres-
sur eloss .As aresult ,you could lose control of
your vehicle. Ther eis aris kof accident.
Chec kth etires regularly for sign sof damag e
and replace any damaged tires immediately.
Chec kwheels and tires for damag eat least once
a month .Chec kwheels and tires after driving
336Operation
Wheels and tires

off-road or on rough roads. Damaged wheels
can cause a loss of tire pressure.
Pay particular attention to damage such as:
Rcuts in the tires
Rpunctures in the tires
Rtears in the tires
Rbulges on tires
Rdeformation or severe corrosion on wheels
Regularly check the tire tread depth and the
condition of the tread across the whole width of
the tire (
Ypage 337). If necessary, turn the
front wheels to full lock in order to inspect the
inner side of the tire surface.
All wheels must have a valve cap to protect the
valve against dirt and moisture. Do not mount
anything onto the valve other than the standard
valve cap or other valve caps approved by
Mercedes-Benz for your vehicle. Do not use any
other valve caps or systems, e.g. tire pressure
monitoring systems.
Regularly check the pressure of all the tires par-
ticularly prior to long trips. Adjust the tire pres-
sure as necessary (
Ypage 339).
The service life of tires depends, among other
things, on the following factors:
RDriving style
RTire pressure
RDistance covered
Notes on tire tread
GWARNING
Insufficient tire tread will reduce tire traction.
The tire is no longer able to dissipate water.
This means that on wet road surfaces, the risk
of hydroplaning increases, in particular where speed is not adapted to suit the driving con-
ditions. There is a risk of accident.
If the tire pressure is too high or too low, tires
may exhibit different levels of wear at differ-
ent locations on the tire tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
width of all tires.
Minimum tire tread depth for:
RSummer tires: âin (3 mm)
RM+S tires: ãin (4 mm)
For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached.
Marking :shows where the bar indicator
(arrow) for tread wear is integrated into the tire
tread.
Treadwear indicators (TWI) are required by law. Six indicators are positioned on the tire tread.
They are visible once a tread depth of approx-
imately áin (1.6 mm) has been reached. If this
is the case, the tire is so worn that it must be
replaced.
Selecting, mounting and replacing
tires
ROnly mount tires and wheels of the same type
and make.
Exception: it is permissible to install a differ-
ent type or make in the event of a flat tire.
Observe the "MOExtended tires (tires with
run-flat characteristics" section (
Ypage 321).
ROnly mount tires of the correct size onto the
wheels.
RBreak in new tires at moderate speeds for the
first 60 miles (100 km). The new tires only
reach their full performance after this dis-
tance.
RDo not drive with tires which have too little
tread depth, as this significantly reduces the
traction on wet roads (hydroplaning).
RReplace the tires after six years at the latest,
regardless of wear.
Operation337
Wheels and tires
Z

MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive your vehi-
cle even if there is a total loss of pressure in one
or more tires.
MOExtended tires may only be used in conjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor
and on wheels specifically tested by Mercedes-
Benz.
Notes on driving with MOExtended tires with a
flat tire (
Ypage 321).
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory. It
is therefore recommended that you additionally
equip your vehicle with a TIREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. A TIREFIT kit can be obtained from a qualified specialist workshop.
Winter operation
General notes
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section (
Ypage 356).
Driving with summer tires
At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your vehicle
to M+S tires. Using summer tires at very cold
temperatures could cause cracks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
GWARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of
your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
M+S tires
GWARNING
M+S tires with a tire tread depth of less than
ã in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than ãin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use winter
tires or all-season tires. Both types of tire are
identified by the M+S marking.
Only winter tires bearing the isnowflake
symbol in addition to the M+S marking provide
the best possible grip in wintry road conditions.
Only these tires will allow driving safety systems
such as ABS and ESP
®to function optimally in
winter. These tires have been developed specif-
ically for driving in snow.
Use M+S tires of the same make and tread on all
wheels to maintain safe handling characteris-
tics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
When you have mounted the M+S tires:
XCheck the tire pressures (Ypage 342).
XVehicles for Canada: restart the tire pres-
sure loss warning system (Ypage 343).
XRestart the tire pressure monitor
(Ypage 345).
Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
338Winter operation
Wheels and tires