Page 345 of 502

Intheeve 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 343).
RVe hicles with a TIREFIT kit: you can repair
th e tire so that it is possible tocontinue the
journ eyfor a short period of time. Todo this,
use the TIREFIT kit (
→page 344).
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 386).
Note s on MOExtended tires (run-flat tires)
&
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.
Ve hicles 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.
Breakdown assis tance 34
3
Page 359 of 502

#Toactivate transport leve l:press button
1.
Indicator lamp 2lights up.
The vehicle is raised by1.2 in (30 mm) com‐
pared tothe normal le vel.
#Press button 1again and hold it for at least
fi ve seconds.
The vehicle is raised from thera ised le velto
th e transport le vel.
The transport le vel is reached when indicator
lamp 2flashes and theMax. Speed
35 km/h display message appears in the
multifunction displa y.
Load theve hicle and lash it down at all four
wheels. Otherwise, theve hicle could be dam‐
aged.
% A minimum dis tance of 4 in (10 cm) up wards
and 8 in (20 cm) down wards must be kept to
th e transport platform.
The vehicle is lo wered again in thefo llowing sit‐
uations:
RWhen driving fasterthan 21 mp h (35 km/h).
RAfter selecting a drive program using the
DY NA MIC SELECT switch.
The vehicle is adjus tedto the height of the last
active drive prog ram.
#To deactivate transpo rtleve l:start the
engine when theve hicle is at a standstill.
If transport leve l is activated, indicator lamp
2 flashes.
#Press and hold button 1for at least five
seconds.
The vehicle is adjus tedto the height of the
last active drive prog ram. Indicator lamp 2
goes out.
#Drive theve hicle off the transpor ter.
4MATIC vehicles
#Make sure that the front and rear axles come
to rest on the same transpor tation vehicle.
Breakdown assis tance 357
Page 370 of 502

The system checks the tire pressure and the tire
te mp erature of the tires ins talled on theve hicle
by means of a tire pressure sensor.
New tire pressure sensors, e.g. in winter tires,
are automatically taught-in during thefirs t jour‐
ney they are used.
If th ere is a subs tantial pressure loss or if the
tire temp erature is excessive, a warning will be
given:
Rvia display messages (→page 430)
Rvia theh warning lamp in the instrument
clus ter (→page 460)
It is the driver's responsibility toset the tire
pressure tothere commended cold tire pressure
suitable forth e operating situation. Set the tire
pressure for cold tires using a tire pressure
ga uge. Notethat the cor rect tire pressure forth e
cur rent operating situation must firs t be taught-
in to the tire pressure monitoring sy stem.
In most cases, the tire pressure monitoring sys‐
te m will auto matically update the new refere nce
va lues af teryo u ha vechanged the tire pressure.
Yo u can, ho wever,also update there fere nce val‐ ues
byrestarting the tire pressure monitoring
sy stem manually (
→page 369).
Sy stem limitations
The sy stem may be impaired or may n
ot function
in thefo llowing situations:
RIf th e tire pressure is set incor rectly
RIfth ere is a sudden pressure loss caused, for
ex ample, byafo re ign object penetrating the
tire.
RIf th ere is a malfunction caused byano ther
ra dio signal source
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
RNotes on tire pressure (→page 364)
Checking the tire pressure with the tire pres‐
sure moni toring sy stem
Requ irements:
RThe ignition is switched on. On-board computer:
,Service.Tires
One of thefo llowing displa ysappears:
RCur rent tire pressure of ea chwheel:
RTire pressure will be displayed after driving a
few minutes
RTire Pressure Monitor Active: thete ach-in
process of the sy stem is not yet comple te.
The tire pressures are already being moni‐
to re d.
#Compare the tire pressure with there com‐
mended tire pressure forth e cur rent operat‐
ing status (
→page 365). Observ eth e no tes
on tire temp erature (→page 364).
% The values displa yed in the multifunction dis‐
play may deviate from those of the tire pres‐
sure gauge as they referto sea le vel.At high
altitudes, the tire pressure values indicated
by pressure gauges are higher than those
shown bythe on-board computer. In this
case, do not reduce the tire pressure.
368
Wheels and tires
Page 406 of 502

Displaymessages
Int roduction
Note s on display messages
Display messages appear on the multifunction
displa y.
Displ aymessage s with graphic symbols are sim‐
plified in the Operator's Manual and may dif fer
from the symbols on the multifunction displa y.
The multifunction display sho wshigh-priority dis‐
play messages in red. Cer tain display messages
are accompanied byawa rning tone.
Please respond in accordance with the display
messages and follow the additional no tes in this
Opera tor's Manual.
Fo r some display message s, a symbol is also
shown:
R¤ Further information
RO Hide display message
Yo u can select the desired symbol byswiping
left or right on the left-hand Touch Control.
Press the¤ symbol toshow fur ther informa‐
tion on the multifunction displa y.Press theO
symbol tohide the display message.
Yo u can hide lo w-priority display messages by
pressing the¤ button or the left-hand Touch
Control. The display messages arethen stored in
th e message memor y.
Re ctify the cause of a display message as
qu ickly as possible.
High-priority display messages cannot be hid‐
den. The multifunction display sho ws these dis‐
play messages continuously until the cause of
th e display message has been rectified. Calling up
stored displ aymessages
On-boa rdcompute r:
,Service.1 Message
If th ere are no display messages, No Messages
appears on the multifunction displa y.
#Scrollthro ugh the display messages byswip‐
ing upwards or down wards on the left-hand
To uch Control.
#To exitth e message memor y:press the
¤ button.
404
Display messages and warning/indicator lamps
Page 407 of 502
Safety sy stems
Display messages
Possible causes/consequences and MSolutions
!
÷
Inoperative See Operator's
Manual*
ABS and ESP
®are malfunctioning.
Other driving sy stems and driving saf etysy stems may also malfunction.
&
WARNING Risk of skidding if ABS and ESP®are malfunctioning
If ABS and ESP
®are malfunctioning, the wheels could lock when braking and ESP®cannot carryout vehicle
st abilization.
The steering capability and braking characteristics are thus se verely impaired .Th ebr aking dis tance in an emer‐
ge ncy braking situation can increase. In addition, other driving saf etysy stems are switched off.
#Drive on carefull y.
#Have ABS and ESP®checked immediately at a qualified specialist workshop.
#Drive on carefully.
#Visit a qualified specialist workshop immediatel y.
Displaymessage s andwarning/indicator lamps 405
Page 408 of 502

Displaymessages
Possible causes/consequences and MSolutions
!
÷
Currently Unavailable See
Operator's Manual*
ABS and ESP
®are temp orarily una vailable.
Other driving sy stems and driving saf etysy stems may also malfunction.
&
WARNING Risk of skidding if ABS and ESP®are malfunctioning
If ABS and ESP
®are malfunctioning, the wheels could lock when braking and ESP®cannot carryout vehicle
st abilization.
The steering capability and braking characteristics are thus se verely impaired .Th ebr aking dis tance in an emer‐
ge ncy braking situation can increase. In addition, other driving saf etysy stems are switched off.
#Drive on carefull y.
#Have ABS and ESP®checked immediately at a qualified specialist workshop.
#Carefully drive on a suitable stre tch of road, making slight steering mo vements at a speed abo ve19 mp h
(30 km/h).
#If th e display message does not disappear, consult a qualified specialist workshop immediately. Drive carefully.
406
Display messages and warning/indicator lamps
Page 409 of 502
Displaymessages
Possible causes/consequences and MSolutions
÷
Inoperative See Operator's
Manual*
ESP
®is malfunctioning.
Other driving sy stems and driving saf etysy stems may also malfunction.
The brake sy stem continues tooperate normally. The braking dis tance in an emergency braking situation can
increase.
& WARNING Risk of skidding if ESP®is malfunctioning
If ESP
®is malfunctioning, ESP®cannot car ryout vehicle stabilization. In addition, other driving saf etysy stems
are switched off.
#Drive on carefull y.
#Have ESP®checked at a qualified specialist workshop.
#Drive on carefully.
#Vi sit a qualified specialist workshop immediatel y.
Displaymessage s andwarning/indicator lamps 407
Page 410 of 502
Displaymessages
Possible causes/consequences and MSolutions
÷
Currently Unavailable See
Operator's Manual*
ESP
®is temp orarily una vailable.
Other driving and driving saf etysy stems may also be malfunctioning.
&
WARNING Risk of skidding if ESP®is malfunctioning
If ESP
®is malfunctioning, ESP®cannot car ryout vehicle stabilization. In addition, other driving saf etysy stems
are switched off.
#Drive on carefull y.
#Have ESP®checked at a qualified specialist workshop.
#Carefully drive on a suitable stre tch of road, making slight steering mo vements at a speed abo ve19 mp h
(30 km/h).
#If th e display message does not disappear, consult a qualified specialist workshop immediately. Drive carefully.
408
Display messages and warning/indicator lamps