run flat MERCEDES-BENZ E-CLASS SALOON 2015 Owners Manual

Electronic Stability Program
see ESP ®
(Electronic Stabilit yProgram)
Emergency
Automatic measures after an acci-
den t................................................. 58
Emergency key
Unlockin gthe driver' sdoor ............ 102
Emergency key element
Function/notes ................................ 96
Insertin g......................................... .97
Lockin gvehicle .............................. 103
Removing ........................................ .97
Emergency release
Driver's door .................................. 102
Fuel filler flap ................................ .202
Emergency spare wheel
General notes ................................ 465
Important safety notes .................. 465
Inflating the collapsibl espare
wheel ............................................. 467
Removing ....................................... 465
Storage location ............................ 465
Stowing .......................................... 466
Technical data ............................... 468
Emergency unlocking
Tailgate .......................................... 110
Vehicle .......................................... .102
Engine
Display message ............................ 311
ECO start/stop function ................ 183
Engine numbe r............................... 473
Jump-starting ................................. 405
Running irregularl y......................... 187
Starting problems .......................... 187
Starting the engine with the key .... 182
Starting with KEYLESS GO ............. 182
Stopping ........................................ 206
Tow-starting (vehicle )..................... 411
Warning lamp (engine diagnos-
tics) ............................................... 336
Engine electronics
Note s............................................. 470
Problem (fault) ............................... 187
Engine oil
Additives ........................................ 479
Checking the oi llev el ..................... 380
Checking the oi llev el using the
dipstick .......................................... 381 Displa
ymessage ............................ 313
Filling capacity ............................... 478
Note sabout oilg rade s................... 478
Note sono illevel/consumption .... 380
Temperature (on-board computer, AMG vehicles) ................................ 296
Topping up ..................................... 381
Viscosity ........................................ 479
Environmental protection
Returning an end-of-life vehicl e....... 24
ESP ®
(Electroni cStability Pro-
gram)
Activating/deactivating (except
AMG vehicles) .................................. 84
Activating/deactivating (on-
board computer, except AMG
vehicles) ........................................ 287
AMG menu (on-board computer) ... 296
Characteristics ................................. 84
Deactivating/activating (button
in AMG vehicles) .............................. 85
Displa ymessage ............................ 300
ETS/4ETS ........................................ 83
Function/note s................................ 83
Genera lnotes .................................. 83
Important safety guideline s............. 83
Trailer stabilisation .......................... 86
Warning lamp ................................. 333
ETS/4ETS (Electroni cTraction Sys-
tem) ...................................................... 83
Exhaus tpipe (cleaning instruc-
tions) .................................................. 390
Exterior lighting
Setting soptions ............................. 142
see Lights
Exterior mirrors
Adjusting ....................................... 136
Anti-dazzle mod e(automatic) ........ 137
Folding in when locking (on-board computer) ...................................... 295
Folding in/out (automatically )....... 137
Folding in/out (electrically) ........... 137
Ou tofp osition (troubleshooting )... 137
Parking position ............................. 138
Resetting ....................................... 137
Storing settings (memory func-
tion) ............................................... 139 Index
11

Tyres
Display messages
Possible causes/consequence
sand M
MSolutions Tyr
epressure
Tyr epressure
Check tyres
Check tyres The tyr
epressure loss warning system ha sdetecte das ignificant
loss in pressure.
Aw arnin gtone also sounds.
Possibl ecauses:
R yo uh avec hange dthe positions of the wheels and tyres or fitted
new wheels and tyres
R the tyr epressure in one or mor etyres is not correct
G WARNING
Underinflated tyres pose the following risks:
R the tyres ma yburst, especiall yasthe load and vehicl espeed
increase
R the tyres ma yweare xcessivel yand/or unevenly, which may
greatl yimpai rtyret raction
R the driving characteristics, as well as steering and braking ,may
be greatl yimpaired
There is ariskofana ccident.
X Stop the vehicl ewithou tmaking any sudden steering or braking
manoeuvres .Pay attentio ntothe traffi cconditions as yo udoso.
X Safeguard the vehicl etoprevent it fro mrolling away
(Y page 205).
X Check the tyres and ,ifnecessary ,follo wthe instructions for a
fla ttyre( Ypage 397).
X Check the tyr epressures and ,ifnecessary ,correct the tyre
pressure.
X Restart the tyr epressure loss warning system when the tyre
pressure is correct (Y page 422).Check tyr
epres‐
Check tyr epres‐
sures sures
the nrestar tRun
the nrestar tRun
Fla tIndicator
Fla tIndicator The tyr
epressure loss warning system generated adisplay mes-
sage and ha snot been restarted since.
X Set the correct tyr epressure in al lfou rtyres.
X Restart the tyr epressure loss warning system (Y page 422).Run Fla
tIndicator
Run Fla tIndicator
inoperative inoperative The tyr
epressure loss warning system is faulty.
X Visi taq ualified specialis tworkshop. 322
Displa
ymessagesOn-b oardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Rectify
Rectify
tyr
ep ressure
tyr ep ressure The tyr
epressur eistoolow in at leas tone of th etyres, or th etyre
pressur edifference between th ewheels is to ogreat.
X Chec kthe tyrep ressures at th enexto pportunity (Y page 423).
X If necessary, correc tthe tyrep ressure.
X Restart th etyrep ressur emonitor (Y page 424). Check Check
tyre(s)
tyre(s) The tyr
epressur einoneor mor etyres has dropped significantly.
The whee lposition is displayed in th emultifunction display.
Aw arnin gtonea lso sounds.
G WARNING
Underinflated tyres pos ethe following risks:
R thet yres may burst, especially as th eload and vehicl espeed
increase
R thet yres may wear excessivel yand/o runevenly, whic hmay
greatl yimpair tyr etraction
R thed rivin gcharacteristics ,aswell as steerin gand braking, may
be greatl yimpaired
There is ariskofana ccident.
X Stop th evehicl ewithout makin gany sudden steerin gorbraking
manoeuvres .Pay attention to th etraffic condition sasyou do so.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Chec kthe tyres and ,ifneces sary, follow th einstructions fora
flat tyr e(Ypage 397).
X Chec kthe tyrep ressur e(Ypage 423).
X If necessary, correc tthe tyrep ressure. Warning
Warning
tyr
ed efect
tyr ed efect The tyr
epressur einoneor mor etyres has dropped suddenly. The
whee lposition is displayed in th emultifunction display.
G WARNING
If you drive wit haflat tyre, there is ariskoft hefollowing hazards:
R af lat tyr eaffects th eabilit ytos teer or brak ethe vehicle
R you could los econtro lofthevehicle
R continued drivin gwithaf lat tyr ewill caus eexces sive heat build-
up and possibl yafire
There is ariskofana ccident.
X Stop th evehicl ewithout makin gany sudden steerin gorbraking
manoeuvres .Pay attention to th etraffic condition sasyou do so.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Chec kthe tyres and ,ifneces sary, follow th einstructions fora
flat tyr e(Ypage 397). Display
messages
323On-boardcomputer an ddisplays Z

Vehicles with
acolla psibl eemergency
spare wheel (Example: equipment and country-specifi
cvaria-
tions possible)
: Towing eye
; One pair of gloves
= Jack
? Folding whee lchock
A Centring pin
B Shee tfor faulty wheel
C Tyre inflation compressor
D Wheel wrench
E Fusealloc ation chart
X Ope nthe boot lid/tailgate.
X Lif tthe boot floor (Y page 356)orthe lug-
gage compartment floor (Y page 357)
upwards. Flat tyre
Preparin
gthe vehicle
Your vehicl emaybe equipped with:
R MOExtende dtyres (tyres with run-fla tchar-
acteristics )(Ypage 398)
Vehicl epreparatio nisn ot necessary on
vehicles with MOExtende dtyres.
R aT IREFIT kit (Y page 395)
R an emergency spare whee l(certai ncoun-
trie sonly) (Y page 465)
Vehicles with MOExtende dtyres ar enot
equipped with aTIREFIT kit at the factory .Itis
therefore recommende dthatyou additionally equi
pyourvehicl ewithaT IREFIT kit if yo ufit
tyres tha tdon ot feature run-fla tcharacteris-
tics ,e.g.w inter tyres. ATIREFIT kit can be
obtained from aquali fied specialist work-
shop.
Informatio nonchanging/fitting awheel
( Y page 426).
X Stop the vehicl easfar away as possible
from traffic on solid ,non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Safeguar dthe vehicl eagain st rolling away
(Y page 205).
X If possible, bring the front wheels into the
straight-ahea dposition.
X Vehicles with AIRMATIC: make sure that
"normal" level is selecte d(Ypage 231).
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS‑ GO:
X Ope nthe driver' sdoor.
The on-boar delectronics now have status
0.T hisist he same as the key having been
removed.
X Remove the Start/Sto pbutton from the
ignition lock (Y page 179).
X Make sure tha tthe passenger sarenot
endangere dasthey do so. Make sure that
no one is nea rthe danger area whil ea
whee lisbeing changed .Anyone wh oisnot
directl yassis ting in the whee lchange
should, for example, stand behind the bar-
rier.
X Ge toutof the vehicle. Pa yattentio ntotraf-
fic conditions when doing so.
X Close the driver' sdoor.
X Place the warning triangl eatasuitabl edis-
tance (Y page 394). Observe lega lrequire-
ments. Flat tyre
397Breakdown assis tance

MOExtended tyres (tyres with run-flat
characteristics)
General notes With MOExtended tyres (tyre
swith run-flat
characteristics), you can continue to drive
yourv ehicleeven if there is atotal loss of
pressure in one or more tyres. The affected
tyre must not show any clearly visible dam-
age.
You can recognise MOExtended tyres by the
MOExtended marking which appears on the
tyre wall. You willf ind this marking next to the
tyre size designation, the load-bearing capa-
city and the spee dindex.
MOExtended tyres may only be usedinc on-
junction with an activated tyre pressure loss
warning system or tyre pressure monitor.
If ap ressure lossw arningmessage
appears in the multifunction display:
R observe the instructions in the display mes-
sage s(Ypage3 22)
R check the tyre for damage
R if driving on, observe the following notes
The driving distance possible in run-fla tmode
is approximately 80 km when the vehicl eis
partiallyl aden and approximately 30 km
when the vehicl eisfullyladen.
In addition to the vehicl eload, the driving dis-
tance possible depends upon:
R vehicl espeed
R road condition
R outside temperature
The driving distance possible in run-fla tmode
may be reduced by extreme driving condi-
tions/manoeuvres ,oritcan be increased
through amoderate style of driving.
The driving distance possible in run-fla tmode
is counted from the moment the tyre pressure loss warning appears in the multifunction dis-
play.
You must not exceed amaximu mspee dof
80 km/h. When replacing one or all tyres, observe the
following specifications for yourv
ehicle's
tyres:
R size
R the type and
R the "MOExtended "mark.
If at yre has gone flat and cannot be replaced
with an MOExtended tyre, astandard tyre
may be usedasat emporary measure. Make
sure that you use the prope rsize and type
(summer or winter tyre).
Vehicles with MOExtended tyres are not
equipped with aTIREFIT kit at the factory. It is
therefore recommende dthat you additionally
equip yourv ehiclewithaTIREFIT kit if you fit
tyres that do not feature run-fla tcharacteris-
tics, e.g. winter tyres. ATIREFIT kit can be
obtained from aqualified specialist work-
shop.
Important safety notes G
WARNING
When driving in emergency mode, the driving characteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is arisk of accident.
Do not exceed the stated maximu mspeed.
Avoid abrupt steering and driving manoeu-
vres, and driving over obstacles (kerbs, pot-
holes, off-road). This appliesinp articulartoa
laden vehicle.
Stop driving in emergency mode if:
R you hearb anging noises.
R the vehicl estarts to shake.
R you see smoke and smell rubber.
R ESP ®
is intervening constantly.
R there are tears in the sidewalls of the tyre.
After driving in emergency mode, have the
whee lrims checked at aqualified specialist
worksho pwith regard to their further use .The
faulty tyre must be replaced. 398
Flat tyreBreakdown assistance

X
Pull plug ?with the cable and hose Aout
of the housing.
X Screw hose Aontof lange Bof tyre seal-
ant bottle :.
X Place tyre sealant bottle :head down-
wards into recess ;of the tyre inflation
compressor. X
Remove the cap from valve Con the faulty
tyre.
X Screw filler hose Dontov alveC.
X Inser tconnector ?into a12V socket
(Y page 366) in your vehicle.
X Turn the key to position 1in the ignition
lock (Y page 179).
X Press on/of fswitch =on the tyre inflation
compressor to I.
The tyre inflation compressor is switched
on. The tyre is inflated.
First ,tyre sealant is pumped into the tyre.
The pressure may briefly rise to approx-
imately 500 kPa (5 bar/73 psi).
Do not switch off the tyrei nflation com-
pressor during this phase.
X Let the tyre inflation compressor run for
five minutes. The tyre should then have
attained apressure of at least 180 kPa
(1.8 bar/26 psi).
If ap ressure of 180 kPa (1.8 bar/26 psi )has
been attained after five minutes, see "Tyre
pressure reached" (Y page 400).
If at yre pressure of 180 kPa (1.8 bar/26 psi)
has not been attained after five minutes, see "Tyre pressure not reached" (Y page 400).If the tyre sealant leaks out, allow it to dry. It
can then be removed like alayer of film.
If you get tyre sealant on your clothing, have it cleaned as soon as possible with perchloro-
ethylene.
Tyrep ressure not reached If
ap ressure of 180 kPa (1.8 bar/26 psi )has
not been attained after five minutes:
X Switc hoff the tyre inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tyre.
X Very slowly drive forwards or reverse
approximately 10 m.
X Pump up the tyre again.
After amaximum of five minutes the tyre
pressure must be at least 180 kPa (1.8 bar/
26 psi). G
WARNING
If the required tyre pressure is not reached
after the specified time, the tyre is too badly
damaged. The tyre sealant cannot repair the
tyre in this instance. Damaged tyres and atyre
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is arisk of accident.
Do not continue driving. Contact aqualified
specialist workshop.
Tyrep ressure reached G
WARNING
At yre temporarily sealed with tyre sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is arisk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed the specified maximum speed with atyre that
has been repaired using tyre sealant.
The maximum speed for atyre sealed with
tyre sealant is 80 km/h. The upper part of the
TIREFI Tsticker must be affixed to the instru- 400
Flat tyreBreakdown assistance

ment cluster where it willbee
asily seen by
the driver.
! After use, excess tyre sealant may run out
of the filler hose. This could caus estains.
Therefore, place the filler hose in the plastic
bag which contained the TIREFIT kit. H
Environmental note
Have the used tyre sealant bottle disposed of
professionally, e.g. at aqualified specialist
workshop.
If at yre pressure of 180 kPa (1.8 bar/26 psi)
has been attained after five minutes:
X Switch off the tyre inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tyre.
X Stow the tyre sealant bottle, the tyre infla-
tion compresso rand the warning triangle.
X Pull away immediately.
X Stop after driving for approximatel yten
minutes and check the tyre pressure with
the tyre inflation compressor.
The tyre pressure must now be at least
130 kPa (1.3 bar/19 psi). G
WARNING
If the required tyre pressure is not reached
after driving for ashort period, the tyre is too
badly damaged. The tyre sealant cannot
repair the tyre in this instance. Damage dtyres
and atyre pressure that is too low can signif-
icantly impair the vehicle's braking and driv-
ing characteristics. There is arisk of accident.
Do not continue driving. Contact aqualified
specialist workshop.
i In yourv
ehicle, you willf indasticker with
the Mercedes-Benz Service24h telephone
number, e.g. on the B-pillar on the driver's
side.
X Correct the tyre pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the fuel filler
flap for values.
X To increase the tyre pressure: switch on
the tyre inflation compressor. X
To reduce the tyre pressure: depress
pressure release button Enext to pres-
sure gauge F.
X When the tyre pressure is correct, unscrew
the filler hose from the valve of the sealed
tyre.
X Screw the valve cap onto the tyre valve of
the sealed tyre.
X Pullt he tyre sealant bottle out of the tyre
inflation compressor.
The filler hose stays on the tyre sealant
bottle.
X Drive to the nearest qualified specialist
workshop and have the tyre changed there.
X Have the tyre sealant bottle replaced as
soon as possible at aqualified specialist
workshop.
X Have the tyre sealant bottle replaced every
four years at aqualified specialist work-
shop. Battery (vehicle)
Important safety notes
Work on the battery ,e.g. removing or fitting,
requires specialist knowledge and the use of
specia ltools. Therefore, alwaysh ave work on
the battery carrie dout at aqualified specialist
workshop. G
WARNING
Work carried out incorrectly on the battery
can lead, for example, to ashort circuit and
thus damage the vehicl eelectronics. This can Battery (vehicle)
401Breakdown assistance
Z

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variation sare pos-
sible. Not ethat your vehicle may not be
equipped with all of the function sdescri-
bed. This is also the case for system sand
function srelevan ttosafety.
i Read the information on qualified special-
ist workshops: (Y page 27). Important safet
ynotes G
WARNING
If wheels and tyres of the wrong size are used, the wheel brakes or suspensio ncomponents
may be damaged. There is arisk of an acci-
dent.
Always replace wheels and tyres with those
that fulfil the specification softhe original
part.
When replacin gwheels, make sure to fit the
correct:
R designation
R type
When replacin gtyres, make sure to fit the
correct:
R designation
R manufacturer
R type G
WARNING
Af lat tyre severely impairs the driving, steer-
ing and brakin gcharacteristic softhe vehicle.
There is arisk of accident.
Tyres without run-flat characteristics:
R do not drive with aflat tyre.
R immediately replace the flat tyre with your
emergency spare wheel or spare wheel, or
consult aqualified specialist workshop. Tyres with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tyres (tyres
with run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benz or are not being
used correctly can impair the operating
safety.
Before purchasin gand using non-approved
accessories, visit aqualified specialist work-
shop and enquire about:
R suitability
R legal stipulations
R factory recommendations
Information on the sizes and types of wheels
and tyres for your vehicle can be found under
"Wheel/tyre combinations" (Y page 431).
Information on tyre pressures can be found:
R on the tyre pressure label on the fuel filler
flap (Y page 202)
R under "Tyre pressure" (Y page 420)
Modification work on the brake system and
wheels is not permitted. The use of wheel
spacers or brake dust shields is not permit-
ted. This invalidates the general operating
permit for the vehicle.
i Further information on wheels and tyres
can be obtained at any qualified specialist
workshop. Operation
Information on driving
Check the tyre pressures when the vehicle is
heavily laden and adjust prior to atrip.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicat ethat
the wheels or tyres are damaged. If you sus-
pect that atyre is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to chec kthe wheels and tyres for
damage. Hidden tyre damage could also be 416
OperationWheels and tyres

tyr
eloa dr ating and spee drating required for
your vehicle.
Pa ys pecial attentio ntocountry-specific
requirements for tyr eapproval. These
requirements can stipulate aspecific tyre
typ efor your vehicle. Furthermore, the us eof
certain tyr etypes in certain regions and areas
of operatio ncan be highl ybeneficial. Yo ucan
fin df urthe rinformation regarding tyres at
specialis ttyrer etailers ,atqualified specialist
workshop soratany Mercedes-Benz Service
Centre.
R Onl yfit tyres and wheels of the same type
and make.
Exception: it is permissibl etofitad ifferent
typ eorm akeint he event of aflatt yre.
Observe the "MOExtende dtyres (tyres with
run-flat characteristics) "section
(Y page 398).
R Onl yfit tyres of the correct size onto the
wheels.
R Ru ninn ew tyres at moderate speeds for
the first 100 km .The yo nlyr each their full
performance after thi sdistance.
R Do not drive with tyres which have too little
trea ddepth.T hiso therwis esignificantly
reduce sthe tractio nonwetroads (aqua-
planing).
R Replace the tyres after si xyears at the lat-
est, regardles sofwear.
Observe the note sonthe emergency spare
whee l(Y page 465). MOExtende
dtyre s(tyres with run-flat
characteristics)
With MOExtende dtyres (tyres with run-flat
characteristics) ,you can continue to drive
your vehicl eevenift here is atota llos sof
pressure in one or mor etyres.
MOExtende dtyres ma yonlybeu sedinc on-
junction with an activated tyr epressure loss
warning system or with an activated tyr epres-
sure monitor and on wheels specifically tes-
ted by Mercedes-Benz. Note
sond rivingwithM OExtende dtyres with
af latt yre( Ypage 398).
Vehicles with MOExtende dtyres ar enot
equipped with aTIREFIT kit at the factory .Itis
therefore recommende dthatyou additionally
equi pyourvehicl ewithaT IREFIT kit if yo ufit
tyres tha tdon ot featur erun-flat characteris-
tics ,e.g.w inter tyres .ATIREFIT kit can be
obtained fro maqualified specialis twork-
shop. Winter operation
General notes
Hav eyourvehicl ewinterproofed at aquali fied
specialis tworkshop at the onse tofwinter.
Observe the note sinthe "Changing awheel"
sectio n(Ypage 426). Driving with summe
rtyres
At temperatures belo w+7†,summertyres
lose elasticity and therefore tractio nand
braking power. Chang ethe tyres on your vehi-
cle to M+S tyres .Using summe rtyres at very
col dtemperatures could cause tears to form,
thereb ydamagin gthe tyres permanently.
Mercedes-Benz cannot accep tresponsibility
for thi stypeofd amage. G
WARNING
Damaged tyres can cause tyr einflatio npres-
sure loss. As aresult, yo ucould lose contro lof
your vehicle. There is ariskofa ccident.
Check the tyres regularly for signs of damage and replace any damage dtyres immediately. M+S tyres
G
WARNING
M+S tyres with atyret rea ddepth of less than
4m marenot suitabl efor us einw inter as they
do not provid esufficient traction. There is a
ris kofa ccident. 418
Winter operationWheel
sand tyres

If
at yre size precedes atyre pressure, the
following tyre pressure information is only
validf or that tyre size.
Use asuitable pressure gauge to check the
tyre pressure. The outer appearance of atyre
does not permit any reliable conclusion about the tyre pressure. On vehicle sfitted with the
electronic tyre pressure monitor, the tyre
pressure can be checked using the on-board
computer.
If possible, only correct tyre pressures when
the tyres are cold.
The tyres are cold:
R if the vehicle has been parked with the tyres
out of direct sunlight for at least three
hours and
R if the vehicle has not been driven further
than 1.6 km
Depending on the ambient temperature ,the
vehicle speed and the loadont he tyres, the
tyre temperature and thus the tyre pressure
changes by approximately 10 kPa (0. 1bar/
1.5 psi )per 10 †. Take this into account
when checking the pressure of warm tyres.
Only correct the tyre pressure if it is too low
for the current operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have anegative effect on handling charac-
teristics and thus driving safety (e.g. aqua-
planing) The tyre pressure values given for low loads
are minimum values which offer you good ride
comfort characteristics.
However, you can also use the values given
for higherl oads. These are permissible and
willn ot adversely affect the running of the
vehicle.
Speeds up to 210 km/h: despite the values
stated on the tyre pressure information label (fuel filler flap), for speedsupt o210 km/h
and with R16 tyres, the values stated can be
reduced as follows, withou tareduction in
safety:
R Saloon: Ò30 kPa (Ò0.3 bar/Ò4p si)
R Estate: Ò20 kPa (Ò0.2 bar/Ò3p si)
This does not apply to vehicle stowing a
trailer.
This improves the ride comfort of yourv ehi-
cle; however, fuel consumption may increase slightly. Tyre pressure lossw
arning system
General notes Whilet
he vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect significant pressure loss in atyre. If the speed
of rotation of awhee lchanges as aresultofa
loss of pressure, acorresponding warning
messag ewilla ppear in the multifunction dis-
play.
You can recognise the tyre pressure loss
warning by the Run Flat Indicator Run Flat Indicator
active Restart with OK
active Restart with OK messagewhich
appears in the Serv.
Serv.menu of the multifunc-
tion display.I nformation on the messag edis-
playc an be found in the "Restarting the tyre
pressure loss warning system" section
(Y page 422). Tyre pressure
421Wheelsand tyres Z