&
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
A battery generates hydrogen gas during the
ch arging process. If there is a short circuit or
spar ksstart toform ,th ere is a danger of the
hy drogen gas igniting. #
Make sure that the positive term inal of
th e connected battery does not come
into contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,yo u must obse rveth e described
order forth e battery clamps. #
When giving starting assistance, alw ays
make sure that you on lyconnect battery
te rm inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jumper
cables. #
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. &
WARNING Risk ofexplosion during
ch arging process and starting assis tance
During thech arging process and starting
assis tance, the battery may release an explo‐
sive gas mixture. #
Avoid fire , open flames, creating spar ks
and smoking. #
Make sure that there is suf ficient venti‐
lation du ring thech arging process and
during starting assis tance. #
Do not lean over a batter y. &
WARNING Risk ofexplosion from a fro‐
zen battery
A dischar ged battery may freeze at temp era‐
tures slightly abo veor below freezing point.
During starting assis tance or battery charg‐
ing, battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis‐
ta nce. If
th ewa rning/indicator lamps do not light up in
th e instrument display around or below freezing point, it is
very likely that the discharged battery
has frozen.
In this case, obser vethefo llowing points:
R Do not give theve hicle starting assis tance or
ch arge the battery
R The service life of a battery that has been
th awe d may be reduced drastically
R The start-up behavior may de teriorate, partic‐
ularly at low temp eratures
R It is recommended that you ha veath awed
battery checked at a qualified specialist work‐
shop
* NO
TEDama gecaused bynume rous or
ex tended attempts tostart the engine Nume
rous or extended attempts tostart the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. When jump-s
tarting and charging the batteries,
obser vethefo llowing points:
R Only use undamaged jumper cables/ charging
cables with a suf ficient cross-section and
insula tedte rm inal clamps
R Non-insulated parts of thete rm inal clamps
must not come into con tact wi thother me tal
parts while the jumper cables/charging
cables are connected tothe battery/jump-
st art connection point
R The jumper cables/charging cables must not
come into con tact wi thany parts which may
mo vewhen the engine is running
R Always make sure that nei ther you nor the
battery is electros tatically charged
R Alwayske ep away from fire and open flames
R Do not lean over a battery
R When charging: only use a battery charger
th at has been tested and appr ovedby
Mercedes-Benz and read the operating
instructions foryo ur charge r before charging
th e batteries 296
Breakdown assis tance
has not
reached the le velto trig ger illumina‐
tion of the TPMS low tire pressure telltale.
Yo ur vehicle has also been equipped with a
TPMS malfunction indicator toindicate that
th e sy stem is not operating properly. The
TPMS malfunction indicator is combined with
th e low tire pressure telltale. When the sys‐
te m de tects a malfunction, the indicator lamp
will flash for appro ximately one minute and
th en remain continuously illumina ted. This
sequence will continue upon subsequent
ve hicle start-ups as long as the malfunction
ex ists.
When the malfunction indicator is illuminated,
th e sy stem may not be able todetect or sig‐
nal low tire pressure as intended. TPMS mal‐
functions may occur for a variet y of reasons,
including the ins tallation of replacement or
alternate tires or wheels on theve hicle that
pr ev ent the TPMS from functioning properly.
Alw aysch eck the TPMS malfunction telltale
af te rre placing one or more tires or wheels on
yo ur vehicle toensure that there placement
or alternate tires and wheels allow the TPMS
to continue tofunction properly. The sy
stem checks the tire pressure and thete m‐
perature 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.
The tire pressure and the tire temp erature appear
in the multifunction display (/ page177).
If th ere is a subs tantial loss of tire pressure, a
wa rning is issued:
R Via display messages (/ page 369)
R Viath e0077 warning lamp in the instrument
clus ter
It is the driver's responsibility toset the tire pres‐
sure tothere commended cold tire pressure suit‐
able forth e operating situation. Set the tire pres‐
sure for cold tires using a tire pressu regauge.
No tethat the cor rect tire pressure forth e cur rent
ope rating situation mu stfirs t be taught-in tothe
tire pressure moni toring sy stem.
In most cases, the tire pressure monitoring sys‐
te m will automatically 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 (/ page316).
Sy stem limits
The sy stem may be impaired or may not function
in thefo llowing situations:
R Ifth e tire pressure is set incor rectly
R Ifth ere is a sudden pressure loss caused by a
fo re ign object penetrating the tire, forex am‐
ple
R Ifth ere is a malfunction caused byano ther
ra dio signal source
R Ifth ere is a change of tire size Wheels and tires
315
Make sure
toobser vethefo llowing fur ther rela‐
te d subject:
R Notes on tire pressure (/ page310)
Checking the tire pressure with the tire pres‐
sure monitoring sy stem
Requ irements:
R The ignition is switched on.
On-board computer: 4 Service 5
Tires
One of thefo llowing displa ysappears:
R The cur rent tire pressure and tire temp era‐
ture of the individual wheels. Instrument Display with color display
R The cur rent tire pressure for each wheel. Instrument Display with black
and white display
R Tire pressure will be displayed after driving a
few minutes :th ete ach-in process of the sys‐
te m is not yet compl ete. The tire pressures
are already being monitored. #
Compare the tire pressure with there com‐
mended tire pressure forth e cur rent ope rat‐
ing condition (/ page 311). Obser vethe
no tes on tire temp erature (/ page310).
% 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 a pressure gauge are higher than those shown
bythe on-board computer. In this
case, do not reduce the tire pressure.
Make sure toobser vethefo llowing fur ther rela‐
te d subject:
R Notes on tire pressure (/ page310)
Rest arting the tire pressure monitor
Requ irements:
R The recommended tire pressure is cor rectly
set forth ere spective operating condition on
each of the wheels (/ page310).
R Rest
artthe tire pressure monitoring sys‐
te m in the following situations:
- The tire pressure has changed.
- The wheels or tires ha vebeen changed or
newly ins talled.
On-board computer: 4 Service 5
Tires #
Scroll down in the menu.
The Use Current Pressures as New Refer-
ence Values message appears in the multi‐
function displa y. #
Con firm the message toinitiate a restart.
The Tire Press. Monitor Restarted message
appears in the multifunction displa y.
Cur rent wa rning messages are dele ted and
th e0077 yellow warning lamp goes out.
Af teryo u ha vedriven for a few minutes, the
sy stem checks whe ther the cur rent tire pres‐
su res are within the specified range. The cur‐
re nt tire pressures are then accep ted as ref‐
erence values and monitored. 316
Wheels and tires
Fo
rve hicles with twin tires with a GVW of
11 ,030 lbs or 12,125 lbs, only use tires with
th e dimension LT215/85 R16 whi chhave
been appr ovedfo rth is vehicle bythe manu‐
fa cturer. It is not permissible touse tires with
dif fere nt dimensions; doing so may lead to a
ge neral ope rating pe rmit being rende red
in va lid.
% Ve
hicles with single tires:
Fo rve hicles with single tires with a GVW less
th an or equal to9,480 lbs, only use tires with
th e dimension LT245/75 R16 whi chhave
been appr ovedfo rth is vehicle bythe manu‐
fa cturer. It is not permissible touse tires with
dif fere nt dimensions; doing so may lead to a
ge neral ope rating pe rmit being rende red
in va lid.
% Ve
hicles with Super Single tires:
Fo rve hicles with single tires with a GVW of
11 ,030 lbs, only use tires with the dimen‐
sions 225/ 75R16C (FA) and 285/65 R16C
(RA) which ha vebeen appr ovedfo rth is vehi‐
cle bythe manufacturer. It is not permissible
to use tires with dif fere nt dimensions; doing
so may lead toage neral ope rating pe rmit
being rende red in valid.
Be sure toalso obse rveth efo llowing fur ther rela‐
te d subjects:
R Notes on tire pressure (/ page310)
R Tire and Loading In form ation placard
(/ page 317)
R Tire size designation, load-beari ng capacity,
speed rating and load ind ex (/page 321)
R Tire pressure table
R Notes on the emer gency spa rewheel
(/ page 332) Note
s onchanging wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels if the
wheels or tires ha vediffere nt dimensions may
se verely impair the driving characteristics.
The wheel brakes or wheel suspension com‐
ponents may also be damaged. #
Rotate front and rear wheels only if the
wheels and tires are of the same dimen‐
sions. On
vehicles that ha vethe same size front and
re ar wheels, rotate the wheels according tothe
inter vals in the tire manufacturer's warranty book
in your vehicle documents. If this is not available,
ro tate the tires every3,000 (5,000) to
6,000 miles (10,000 km), depending on the
degree of wear. Ensure that the direction of rota‐
tion is maintained.
It is imperati vetoobser vethe instructions and
saf ety no tes on "Changing a wheel" when doing
so. Wheel size categories of wheels
The de
term ined vehicle speed is displa yed in the
instrument clus ter and is impor tant for control‐
ling the driving saf ety sy stems and driving sys‐
te ms. The display accuracy of the speedome ter
and the odome ter is legally prescribed. De term in‐
ing the speed is dependent on the tire size or the
ro lling circumference of the tires. The rim diame‐
te r is alw ays specified in inches.
Fo rth is reason, theve hicle contro l units can be
coded forth efo llowing wheel size categories:
Wheel size category 3
R 225/75 R16C FA
R 285/65 R16C RA
R LT24 5/75 R16
R LT21 5/85 R16
% Mercedes-Benz
recommends that youstay
within a wheel size category when changing a
tire. In this wa y,yo uav oid recoding the con‐
trol units.
If yo uch ange the wheel size of your vehicle, for
ins tance when changing wheels for winter opera‐
tion, check that it is assigned tothe cor rect
wheel size catego ry. If the wheel size category
ch anges, you must ha veyour vehicle's control
units recoded at a qualified specialist workshop.
Otherwise, the display accuracy of the speedom‐
et er and the odome ter will be outside the legally
prescribed tolerance. It may also be lo wer,i.e.
th e cur rent road speed is then higher than the
speed shown on the speedome ter.If a deviation
is outside thera nge of tolerance, driving saf ety
sy stems and driving sy stems may be operation‐
ally impaired or may de tect a malfunction and
switch themselves off. 326
Wheels and tires
Display messages
Int
roduction Fu
nction of display messages
The display messages appear on the multifunc‐
tion displa y.
The display messages with graphic displa yscan
be displa yed in simplified form at in the Opera‐
to r's Manual and may deviate from the display on
th e multifunction displa y.The multifunction dis‐
play sho wshigh-priority display messages in red.
In addition, a warning tone sounds for specific
display messa ges.
Ac t in accordance wi th the display messages and
comply with the additional instructions in this
Operator's Manual.
In addition, symbols are shown for some display
messa ges:
0091 Fu
rther information
0061 Hide display messages
Yo u can use the left-hand Touch Control toselect
between the symbols byswiping tothe left or
ri ght. Pressing 0091displa ysfur ther information
on the multifunction displa y.Pressing 0061hides
th e display message.
Yo u can hide lo w-priority display messages by
pressing the¤ button or with the left-hand
To uch Control. The displ aymessages are sa ved in
th e message memor y.
Re ctify the cause of a display message as quickly
as possible.
Yo u cannot hide high-priority displ aymessages.
The multifunction display will show these display
messages until their causes ha vebeen rectified.
Calling up sa ved displ aymessages
On-boa rdcompu ter:
4 Service 5
1 Message
If th ere are no display messages, No Messages
appears on the multifunction displa y.#
Brows eth ro ugh the display messages by
swiping upwards or down wards on left-hand
To uch Control. #
Exiting the message memor y:press the
0038 button. Display messages and
warning and indicator lamps 355
Saf
ety sy stems Display messages
Possible causes/consequences and 0050 0050Solutions
0075
Left Side Curtain Airbag
Malfunction Service
Required (exa mp le) *T
herespective window cur tain airbag is malfunctioning
(/ page 35). &
WARNING Risk of inju ryor fata l injury due tomalfunctions
in the window airbag
If th e window airbag is malfunctioning, it might be triggered
unintentionally or might not be triggered at all in theeve nt of an
accident wi thhigh deceleration. #
Have the window airbag checked and repaired immediately
at a qualified specialist workshop. #
Consult a qualified specialist workshop immediatel y.
0075 Front Left Malfunction
Service Required (exa m‐
ple) *T
herespective restra int sy stem is malfunctioning (/ page31). &
WARNING Risk of inju rydue tomalfunctions in there stra int
sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem com‐
ponents may be triggered unintentionally or may not deploy as
intended during an accident. This may af fect the Emer gency Ten‐
sioning Devices or airbags, forex ample. #
Have there stra int sy stem checked and repaired immedi‐
ately at a qualified specialist workshop. Re
cognition of a restra int sy stem malfunction:
R The 0075 restra int sy stem warning lamp does not light up when
th e ignition is switched on.
R The 0075 restra int sy stem warning lamp lights up continuously
or repeatedly during a journe y. #
Consult a qualified specialist workshop immediatel y.
0075 SRS Malfunction Service
Required *T
herestra int sy stem is malfunctioning (/ page31). &
WARNING Risk of inju rydue tomalfunctions in there stra int
sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem com‐
ponents may be triggered unintentionally or may not deploy as
intended during an accident. This may af fect the Emer gency Ten‐
sioning Devices or airbags, forex ample. #
Have there stra int sy stem checked and repaired immedi‐
ately at a qualified specialist workshop. Re
cognition of a restra int sy stem malfunction:
R The 0075 restra int sy stem warning lamp does not light up when
th e ignition is switched on.
R The 0075 restra int sy stem warning lamp lights up continuously
or repeatedly during a journe y. #
Consult a qualified specialist workshop immediatel y. 356
Display messages and warning and indicator lamps
Display messages
Possible causes/consequences and 0050 0050Solutions
0024
Parking Brake Inopera-
tive *A
malfunction has occur red in the sy stem; the parking brake is inop‐
erative. &
WARNING Risk of an accident due toa brake sy stem mal‐
function
If th e brake sy stem is malfunctioning, braking characteristics
may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified
specialist workshop. #
Park theve hicle on a le vel sur face only and secu reit against
ro lling away. #
Vehicles with automatic transmission: shiftthe transmission
to position 005D. #
Have the brake sy stem checked at a qualified specialist work‐
shop immediatel y.
0024 Incline Too Steep See
Operator's Manual *T
he on-board electrical sy stem voltage is low or a malfunction has
occur red in the sy stem; the holding forc e may not be suf ficient for
th e incline. &
WARNING Risk of accident if the electrical parking brake
has insuf ficient holding force
If th e electrical parking brake does not ha vesuf ficient holding
fo rc e on a steep incline, theve hicle may rollaw ay. #
Park theve hicle on a le vel sur face only and secu reit
against rolling away. #
Shift the automatic transmission toposition 005D. Obser
vethe no tes on parking theve hicle (/ page140).
0024 Par king Brake See Oper-
ator's Manual *T
he on-board electrical sy stem voltage is low or a malfunction has
occur red in the sy stem; the closing forc e may not be suf ficient for
th e incline. &
WARNING Risk of an accident due toa brake sy stem mal‐
function
If th e brake sy stem is malfunctioning, braking characteristics
may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified
specialist workshop. #
Park theve hicle on a le vel sur face only and secu reit against
ro lling away. #
Vehicles with automatic transmission: shiftthe transmission
to position 005D. #
Have the brake sy stem checked at a qualified specialist work‐
shop immediatel y. Displ
aymessa ges and warning and indicator lamps 357
Display messages
Possible causes/consequences and 0050 0050Solutions
Check Brake Pads See
Operator's Manual *T
he brakepads ha vereached their wear limit. &
WARNING Risk of accident due torestricted braking po wer
When the brake pads ha vereached their wear limit, the braking
po we r may be restricted. #
Drive on carefully. #
Have the brake sy stem checked immediately at a qualified
specialist workshop. #
Visit a qualified specialist workshop.
004D
Check Brake Fluid Level *T
here is not enough brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the brak‐
ing characteristics may be impaired. #
Pull over and stop theve hicle safely as soon as possible,
paying attention toroad and traf fic conditions. Do not con‐
tinue driving under any circums tances. #
Consult a qualified specialist workshop. #
Do not add brake fluid. #
Stop theve hicle immediately in accordance with the traf fic con‐
ditions. Do not continue driving. #
Consult a qualified specialist workshop. #
Do not add brake fluid.
Active Brake Assist Func-
tions Limited See Opera-
tor's Manual *A
ctive Brake Assi stis malfunctioning. #
Visit a qualified specialist workshop.
Active Brake Assist Func-
tions Currently Limited
See Operator's Manual *A
ctive Brake Assi stistemp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page149). #
Drive on.
When the ambient conditions are within the sy stem limits, the
sy stem will be available again. #
Ifth e display message does not disappear, stop in accordance
with the traf fic conditions and restart the engine.
Radar Sensors Dirty See
Operator's Manual *
The radar sensor sy stem is malfunctioning. Possible causes:
R Dirt on the sensors
R Heavy precipitation
R Exte nded country driving wi thout other traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning
or temp orarily una vailable.
When the causes ha vebeen eliminated, the driving sy stems and
driving saf ety sy stems will be available again.
If th e display message does not disappear, proceed as follo ws: 358
Display messages and warning and indicator lamps