Mercedes-Benztests genuine Mercedes-Benz
parts, conversion parts and accessories that
have been specifically approved for the type of
vehicle for:
Rreliability
Rsafety
Rsuitability
Despite ongoing market research, Mercedes-
Benz is unable to assess other parts. Even if an
independent or official approval has been pro-
vided in exceptional cases, Mercedes-Benz
accepts no responsibility for the use of such
parts in Mercedes-Benzv ehicles.
In some countries, certain parts are only offi-
cially approved for installation or modification if
they comply with legal requirements. All genu-
ine Mercedes-Benzp arts satisfy these require-
ments .Make sure that all parts are suitable for
your vehicle.
Always specify the vehicle identification number
(VIN) (
Ypage 294) and engine number when
ordering genuine Mercedes-Benzp arts
(
Ypage 295).
QR code for rescue card
The QR Code stickers are affixed to the B-pillar
on the driver's and front-passenger side.
In the event of an accident the rescue services
use the QR Code to quickly find the rescue card
for your vehicle. The current rescue card con-
tains the most important information on your
vehicle, e.g. the electric cable routes, in acom-
pact form.
Further information can be found under http://
portal.aftersales.i.daimler.com.
Data stored in the vehicle
Data Recording
Aw ide range of electronic components in your
vehicle contain data memories.
These data memories temporarily or perma-
nently store technical information about:
Rthe vehicle's operating state
Revents
Rfaults In general, this technical information docu-
ments the state of
acomponent, amodule, a
system or the surroundings.
These include, for example:
Roperating conditionsofs ystem components,
e.g. fluid levels
Rthe vehicle's status messages and those of its
individual components, e.g. number of wheel
revolutions/speed, deceleration in move-
ment, lateral acceleration, accelerator pedal
position
Rmalfunctions and defects in important system
components, e.g. lights, brakes
Rvehicle reactions and operating conditionsi n
special driving situations, e.g. airbag deploy-
ment, intervention of stability control sys-
tems
Rambient conditions, e.g. outside temperature
This data is of an exclusively technical nature
and can be used to:
Rassist in detectin gand rectifying faults and
defects
Ranalyze vehicle functions, e.g. after an acci-
dent
Roptimize vehicle functions
The data cannot be used to trace the vehicle's
movements.
When your vehicle is serviced, technical infor-
mation can be read from the event data memory
and fault data memory.
Services include, for example:
Rrepair services
Rservice processes
Rwarranty events
Rquality assurance
The vehicle is read out by employees of the ser- vice network (including the manufacturer) using
special diagnostic testers .You can obtain more
information there, if required.
After afault has been rectified, the information
is deleted from the fault memory or is continu-
ally overwritten.
When operating the vehicle, situations are con-
ceivable in which this technical data, in connec-
tion with other information (if necessary, after
consultation with an authorized expert), could
be traced to aperson.
32Introduction
Have the vehicle towedtoaqualifiedspecial-
ist workshop in orde rtohavead eployed air
bagr eplaced.
It is important for your safety and that of any
passengers to hav edeployed ai rbagsr eplaced
and to hav eany malfunctioning ai rbags
repaired. Thisw illh elptom ake surethe ai rbags
continuetop erform theirp rotective functio nfor
the vehicle occupants in the event of acrash.
GWARNING
PyrotechnicE mergency Tensioning Devices
that hav ebeend eployed are no longer opera-
tiona land are unable to perform theiri nten-
ded protective function. Thisp oses an
increased risk of injury or even fata linjury.
Therefore, hav epyrotechnicE mergency Ten-
sioning Device swhich hav ebeent riggered
immediately replaced at aqualifie dspecialist
workshop.
If the Emergency Tensioning Device sorairbags
are deployed, yo uwillh earab angandasmall
amount of powder may also be released.T he
6 restraint system warning lamp will light up.
Only in rare case swillt he bang affect your hear-
ing. The powder released is generally not haz-
ardous to health, it coul dhowever cause short-
term breathing difficultie sinpeople with asthma
or other respiratory problems. If it is safe to do
so, yo ushould leave the vehicle immediately or
openaw indow in orde rtoprevent breathing
difficulties.
Air bags and pyrotechni cEmergency Tensioning
Device s(ETDs) contai nperchlorate material,
which may require specialh andling and regard
for the environment. Check with your loca lgov-
ernment’sd isposal guidelines .Calif ornia resi-
dents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Methodofoperation
During the first stag eofacollision, the restraint
system control uni tevaluates important physi-
cal data relating to vehicle deceleratio noraccel-
eration, such as:
RDuration
RDirection
RIntensity Base
dont he evaluatio nofthis data, the
restraint system control uni ttriggers the Emer-
gency Tensioning Device sinthe event of afron-
tal or rear-end collision.
An Emergency Tensioning Device can only be
triggered if:
Rthe ignition is switched on
Rthe components of the restraint system are
operational .You can find furthe rinformation
unde r"Re straint system warning lamp"
(
Ypage 43)
Rthe bel ttongueisi nserted into the buckle on
the respective front seat
If the restraint system control uni tdetects ahigh
accident severity,a dditional components of the
restraint system are deployed independently of
one anothe rincertainfrontal collision situa-
tions:
RFront ai rbags
RWindow curtain ai rbag,ift he system deter-
mines that it can offer additional protection to
that provided by the seatb elt
Depending on the person occupying the front-
passenger seat, the front-passenger ai rbag is
activated or deactivated. The front-passenger
front ai rbag can only be deployed in an accident
if the PASSENGER AIR BAG OFF indicator lamp
is off. Observe the informatio nonthe
PASSENGER AIR BAG OFF indicator lamp
(
Ypage 44).
You rvehicle has dual-stage front ai rbags. Dur-
ing the first deployment stage, the front ai rbag
fills with propellant gas which reduces the risk of
injury .The second stag eisthen triggered withi
n
mi
lliseconds, filling the front ai rbag with the
maximum amount of propellant gas.
The deployment threshold sfor the Emergency
Tensioning Device sand ai rbagsa re calculated
on the basis of the vehicle deceleratio noraccel-
eration occurring at various points in the vehi-
cle. Thisp rocess is pre-emptiv einnature. The
ai rb ag mus tbed eployed on time, at the start of
the collision.
The rate of vehicle deceleratio noracceleration
and the directio nofthe force are essentially
determine dby:
Rdistribution of the force during the impact
Rcollision angle
Rdeformation characteristics of the vehicle
Rcharacteristics of the object with which the
vehicle has collided
Occupants afety55
Safety
Z
Factors which can only be seenand measured
afte rthe collision has occurred do not pla ya
decisive roleint he deployment of an ai rbag,nor
do they provide an indication of ai rbag deploy-
ment.
The vehicle may be considerably deformed with-
outana irbagb eing deployed. Thisist he case if
only relativelye asilyd eformable parts have
bee nhit and ahighr ate of deceleration has not
bee nreached .Conversely ,anairbagm ay be
deployed even though the vehicle suffers only
minor deformation. Thisist he case if, for exam-
ple ,very rigid vehicle parts such as the longitu-
dina lbodym embers are hit in an accident and
the rate of deceleration is sufficient.
If the restraint system control uni tdetects aside
impact or that the vehicle is rolling over,t he rel-
evant restraint system components are
deployed independently of one another depend-
ing on the anticipated typ eofaccident.
RSide impact ai rbag and pelvis ai rbag on the
sid eonw hich an impact occurs, independ-
ently of the Emergency Tensioning Device and sea tbeltu sage
The sid eimpact ai rbag on the front-
passenger sid edeploy sunder the following
conditions:
-the OCS system detects that the front-
passenger sea tisoccupied or
-the bel ttongueh as engaged in the belt
buckle of the front-passenger seat.
RWindow curtain ai rbag on the sid eofthe col-
lision, regardless of sea tbeltu se and whether
front-passeng er se
ati
so ccupied
REmergency Tensioning Devices, if the system
determinesthat they can offera dditional pro-
tection for the vehicle occupants in this sit-
uation
RWindow curtain ai rbagsont he driver's and
front-passenger sides in certain rollover sit-
uations if the system determine sthat they
can offera dditional protection to that provi-
ded by the sea tbelt
iNot al lairbags are deployed in an accident.
The variousa irbags ystems wor kindepend-
ently of each other. How the ai
rbag system works is determined
by the severity of the accident detected,
especiall ythe vehicle deceleration or accel-
eration, and the apparent typ eofaccident:
Rfrontalc ollision
Rsideimpact
Rrollover
Automatic measures after an acci-
dent
Immediately afte ranaccident, the following
measures are implemented ,depending on the
typ eand severity of the impact:
Rthe hazard warning lamps are activated
Rthe emergency lighting is activated
Rthe vehicle doors are unlocked
Rthe front sid ewindow sare lowered
Rthe engine is switched off and the fue lsupply
is cut off
Children in the vehicle
Important safety notes
Accident statistics show that childre nsecured
in the rears eats are safer than childre nsecured
in the front seats. For this reason, Mercedes-
Benz stronglya dvise sthat yo uinstall achild
restraint system on arears eat. Children are
generally better protected there.
If ac hildy ounge rthan twelve years and under
5ft( 1.50 m) in height is traveling in the vehicle:
Ralways securethisc hild in arestraint system
approved for Mercedes-Benz vehicles .The
child restraint systemm ustbea ppropriate to
the age, weight and size of the child.
Rbe sure to observe the instructions and safety
note sint hissectio nina dditiontot he child
restraint systemm anufacturer's installation
instructions.
Ralways observe the instructions and safety
note sont he "Occupant Classification System
(OCS) "(
Ypage 50).
56Children in the vehicle
Safety
Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled
+
The front-passenger air bag is deactivated during th ejou rney eve n
though th efront-pa ssenger seat is occupied by an adult or aperson
wit has tatur ec orre spondin gtothato fana dult.
If additional force sare applie dtotheseat or th eoccupant is no tsitting
on th eseat properly (
Ypage 51), theweigh tthe system detects may
be to olow.
GWARNIN G
The front-passenger fron tair bag will no tdeploy in th eevent of an
accident.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XThe fron tpassenger mus tget out of th evehicle.
XMak esuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay message sand chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dorFront Passenger Airbag Disabled.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XVisitaqualified specialist workshop immediately.
Further information on th eOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (
Ypage 51).
190Display message s(vehicles withou tsteering wheelbuttons)
On-board computera nd displays
Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable d
+
The front-passenger fron tair bag is enabled during th ejou rney eve n
though th efront-pa ssenger seat :
Ris occupied by achild in achild restrain tsystem, or aperson of small
statur e
or
Ris no toccupied.
The system may detec tobjects or force stha tare addin gtotheweigh t
applie dtotheseat .
GWARNIN G
The front-passenger air bag may deploy unintentionally.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XOpenthe front-passenger door .
XRemove thechild and th echild restrain tsystem from th efront -
passenger seat .
XMakesuret here are no objects applyin gadditional weigh ttothe
seat .
The system may otherwise detec tthe additional weigh tand inter-
pre tthe seat occupant's weigh tasgreatertha nita ctually is.
XMakesuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay and chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dorFront Passenger Airbag Disabled.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .Observ ethe note sont heOccupant Classification Syste m
(OCS )(
Ypage 51) .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XInstall thechild restrain tsystem on asuitable rear seat .
or
XSeat aperson of small statur eonasuitable rear seat .
XVisitaqualified specialist workshop immediately.
Display message s(vehicles withou tsteering wheelbuttons)19 1
On-board computera nd displays
Z
Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled SeeOperator' sManual
The front-passenger air bag is deactivated during th ejou rney eve n
though th efront-pa ssenger seat is occupied by an adult or aperson
wit has tatur ec orre spondin gtothato fana dult.
If additional force sare applie dtotheseat or th eoccupant is no tsitting
on th eseat properly (
Ypage 51), theweigh tthe system detects may
be to olow.
GWARNIN G
The front-passenger fron tair bag will no tdeploy in th eevent of an
accident.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XThe fron tpassenger mus tget out of th evehicle.
XMak esuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay message sand chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dSee Operator' sManualorFront PassengerAirbag Disabled See Operator' sManual.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XVisitaqualified specialist workshop immediately.
Further information on th eOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (
Ypage 51).
204Display message s(vehicles wit hsteering whee lbuttons)
On-board computera nd displays
Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable dSeeOperator' sManual
The front-passenger fron tair bag is enabled during th ejou rney eve n
though th efront-pa ssenger seat :
Ris occupied by achild in achild restrain tsystem, or aperson of small
statur e
or
Ris no toccupied.
The system may detec tobjects or force stha tare addin gtotheweigh t
applie dtotheseat .
GWARNIN G
The front-passenger air bag may deploy unintentionally.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XOpenthe front-passenger door .
XRemove thechild and th echild restrain tsystem from th efront -
passenger seat .
XMakesuret here are no objects applyin gadditional weigh ttothe
seat .
The system may otherwise detec tthe additional weigh tand inter-
pre tthe seat occupant's weigh tasgreatertha nita ctually is.
XMakesuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay and chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dSee Operator' sManualorFront PassengerAirbag Disabled See Operator' sManual.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .Observ ethe note sont heOccupant Classification Syste m
(OCS )(
Ypage 51) .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XInstall thechild restrain tsystem on asuitable rear seat .
or
XSeat aperson of small statur eonasuitable rear seat .
Display message s(vehicles wit hsteering whee lbuttons)20 5
On-board computera nd displays
Z