2012 MERCEDES-BENZ C-CLASS SALOON jump start

Risk of
explosion. Fire, naked
flames and smoking are
prohibi ted when handling the batter y.
Av oid creating spar ks. Electrolyte
or battery acid is cor ro‐
sive. Avoid contact with the skin, eyes
or clo thing. Wear suitable pr otective
clo thing, in particular glove s, an
apron and a face mas k.Immedia tely
ri nse electrolyte or acid splashes off
with clean water.Consult a doc tor if
necessar y. We
ar saf etygl asses. Ke
ep children away. Obser
vethis Owner's Manual.
Obser vethefo llowing if you do not intend touse
th eve hicle over an extended pe riod of time:
R Activate standby mode.
R Alternatively: connect the battery toa bat‐
te ry charge r appro vedby Mercedes-Benz or
consult a qualified specialist workshop to
disconnect the batter y. Note
s onstarting assi stance and charging
th e12 V battery Ve
hicles with a lithium-ion battery
When charging the battery and during starting
assis tance, al ways use the jump-s tart connec‐
tion point in the engine compartment. *
NO
TEDama getothe battery from over‐
vo ltage When
charging using a bat tery charge r with‐
out a restriction of the maximum charging
vo ltage, the battery or the on-board electron‐
ics can be damaged. #
Only use battery charge rs with a maxi‐
mum charging voltage of 14.8 V. All
other vehicles
When charging the battery and during starting
assis tance, al ways use the jump-s tart connec‐
tion point in the engine compartment.
* NO
TEDama getothe battery from over‐
vo ltage When
charging using a bat tery charge r with‐
out a restriction of the maximum charging
vo ltage, the battery or the on-board electron‐
ics can be damaged. #
Only use battery charge rs with a maxi‐
mum charging voltage of 14.8 V. 398
Breakdown assis tance
Internal use only

&
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
There is a danger of hydrogen gas igniting
when charging the battery if there is a short
circuit or spar ksstart toform. #
Make sure that the positive term inal of
th e connected battery does not come
into conta ct withvehicle parts. #
Never place me tal objects or tools on a
batter y. #
The described order of the battery
clamps must be obser ved when con‐
necting and disconnecting the batter y. #
When giving starting assis tance, al ways
make sure that you on lyconnect bat‐
te ry term inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jump
lead. #
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 , naked flames, creating
spar ksand smoking. #
Make sure there is suf ficient ventila‐
tion. #
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, bat tery gas can be released. #
Alw ays allow a battery tothaw before
ch arging it or per form ing starting assis‐
ta nce. If
th e indicator/warning lamps in the instrument
clus ter do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has fro‐
zen. In this case you may neither jump-s tart the
ve hicle nor charge the batter y.
The service life of a battery that has been
th awe d may be dramatically shor tened. The
st arting characteristics may be impaired, espe‐
cially at low temp eratures.
It is recommended that you ha veathaw ed bat‐
te ry checked at a qualified specialist workshop.
Plug-in hybrid: be sure toobser vethe no tes in
th e Supplement. You could otherwise failto rec‐
ognise dangers.
All vehicles
* NO
TEDama gecaused bynumerous or
ex tended attempt sto start the engine Nume
rous or extended attempt sto start the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. Breakdown assis
tance 399
Internal use only

Obser
vethefo llowing points during starting
assis tance and when charging the battery:
R Only use undamaged jump lead/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 jump lead/charging cable is
connected tothe battery/jump-s tart connec‐
tion point.
R The jump lead/charging cable must not
come into contact wi thany parts which may
mo vewhen the engine is running.
R Alw ays make sure that nei ther you nor the
battery is elect rostatically charge d.
R Keep away from fire and naked flames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the battery:
R Only use battery charge rs tested and
appr oved for Mercedes-Benz.
R Read the battery charge r's operating instruc‐
tions before charging the batter y. Obser
vethe additional following points during
st arting assis tance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12V.
R The vehicles must not touch.
R Vehicles with a petrol engine: jump-start
th eve hicle only when the engine and exhaust
sy stem are cold. St
arting assi stance and charging the12 V
battery Preparing
starting assi stance/charging #
Secure theve hicle byapplying the electric
parking brake. #
Automatic transmission: shiftthe trans‐
mission toposition j. #
Manual transmission: shiftthe transmis‐
sion toneutral. #
Switch off the ignition and all electrical con‐
sumers. #
Open the bonn et. #
Fold co ver1 up in the direction of the
ar row. 400
Breakdown assis tance
Internal use only

#
Slide co ver2 of positive clamp 3onthe
jump-s tarting connection point in the direc‐
tion of the ar row.
St arting assi stance #
Connect positive contact 3onyour vehicle
to the positive term inal of the donor battery
using the jump lead. Alw ays begin with posi‐
tive clamp 3onyour ow nve hicle firs t. #
Start the engine of the donor vehicle and run
it at idling speed. #
Connect the negative term inal of the donor
battery toear thpoint 4ofyour vehicle
using the jump lead. Begin with the donor
battery firs t. #
Start the engine of your ow nve hicle. #
Let the engines runfo r se veral minutes. #
Before disconnecting the jump leads, switch
on an electrical consumer in your ow nve hi‐
cle, e.g. there ar wind owheater or the light‐
ing.
When thest arting assis tance procedu reis com‐
ple te: #
First,re mo vethe jump leads from ear thpoint
4 and the negative term inal of the donor
batter y,then from positive conta ct3 and
th e positive term inal of the donor batter y.
Begin ea chtime wi th the conta cts onyour
ow nve hicle firs t. #
Afterre moving the jump leads, close co ver
2 of positive contact 3. #
Close co ver1. Fu
rther information can be obtained at a quali‐
fi ed specialist workshop.
Charging #
Connect positive contact 3oftheve hicle to
th e positive term inal of thech arge r using the
ch arging cable. Alw ays begin with positive
contact 3oftheve hicle. #
Connect the negative term inal of thech arger
and ear thpoint 4ontheve hicle with the
ch arging cable. Start with thech arge r. #
Start thech arging process.
When thech arging process is comple te: #
First,re mo vethech arging cable from ear th
point 4and the negative term inal of the
ch arge r,th en from positive conta ct3 and
th e positive term inal of thech arge r.Begin
ea ch time wi th the conta cts oftheve hicle. #
Afterre moving thech arging cable, close
co ver2 of positive contact 3. #
Close co ver1.
Fu rther information can be obtained at a quali‐
fi ed specialist workshop. Breakdown assis
tance 401
Internal use only

Display messages
Possible causes/consequences and M
MSolutions #
Tryto start the engine again. #
Ifth e engine does not start, consult a qualified specialist workshop.
Cannot start engine See
Owner's Manual *T
hecharge leve l of the 48 V battery is too lo w.You can no lon gerst art the engine. #
Switch off electrical consumers that are not required. #
Connect a suitable charge r appro vedfo r Mercedes-Benz with suf ficient charge output tothe jump-s tart connec‐
tion point of the12 V battery (/ page 400).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Motor can be started again *T
he 48 V battery has been charge d automatically via thevo ltage con verter. #
Start the engine and drive theve hicle for a while tocharge the12 V battery and the 48 V batter y. Ty
re pressure moni tor Display messages
Possible causes/consequences and M MSolutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being recei ved. The tyre pressure monitoring sy stem is temp orarily una vailable.
The tyre pressure monitoring sy stem will restart automatically as soon as the cause has been rectified. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure monitoring sy stem is malfunctioning. Display messages and
warning/indicator lamps 489
Internal use only

Intermediate destination
Calculating a route with intermediate
destinations.......................................... 293
En tering................................................. 292
Modifying............................................. .292
St arting an automatic filling station
sear ch................................................... 291
St arting the automatic service sta‐
tion sear ch............................................ 298
In tern etconnection
Cancelling permission (mobile phone).. 343
Communication module function.......... .341
Connection status................................ .343
Displ aying the connection status.......... 343
Editing access data (Blue tooth®
)...........3 43
Information............................................ 340
Mobile phone de tails............................ .343
Re strictions........................................... 340
Setting access data (Bluetooth ®
).......... 342
Setting up (Blue tooth ®
).........................3 42
Setting up (Wi-Fi)................................... 341
Switching Blue tooth®
profile (DUN/
PA N)...................................................... 342
Internet radio
see TuneIn Ionisation
Activating/deactivating (multimedia
sy stem).................................................. 147
iPhone ®
see Apple CarPlay ®
see Mercedes-Benz Link
ISOFIX child seat anchor
Seats suitable for attaching..................... 59
ISOFIX child seat securing sy stem
Fitting..................................................... .61 J
Jack Declaration of conformity........................ 28
Storage location..................................... 41 8
Jump-start connection General no tes........................................ 398 K
Key Acoustic locking verification signal.......... 74
Battery.................................................... 75
Emergency key........................................ 74Energy consumption................................
74
Fe atures................................................. .73
Ke yring attachment................................ 74
Overview................................................. 73
Problem................................................... 76
Un locking setting.................................... .74
Ke y functions
Deactivating.............................................74
KEYLESS-GO Locking theve hicle..................................78
Problem................................................... 78
Un locking setting.................................... .74
Un locking theve hicle.............................. 78
Kickd own
Using.....................................................1 71
Knee airbag .................................................. 43 L
Lamp see In terior lighting
Lamps (instrument display) see Warning/indicator lamps 532
Index
Internal use only

St
andby mode
Ac tivating/deactivating......................... 185
Fu nction................................................ 184
St anding lights.......................................... 12 5
St art-off assi st
see Optimised acceleration
St art/s top button
Pa rking theve hicle................................1 78
St arting theve hicle...............................1 55
Switching on the po wer supply or
ignition.................................................. 154
St art/s top function
see ECO start/ stop function
St arter battery
Charging (Remo teOnline)..................... 15 6
St arting assi stance
see Jump -sta rt connection
St arting the engine
see Vehicle
St arting-o ffaid
see Hill Start Assist
St ation
Deleting................................................. 360 Direct frequency entr
y.......................... 360
Fr equency fix......................................... 361
Moving.................................................. 360
Sea rching..............................................3 60
Setting................................................... 359
St oring..................................................3 60
St ation list
Calling up.............................................. 360
St ation presets
Managing.............................................. 360
St ation tracking
Setting................................................... 361
St ationary heater/ventilation
Displ ays (remo tecontrol)....................... 151
Problems (remo tecontrol)..................... 15 2
Re placing the battery (remo tecontrol).. 151
Setting (multimedia sy stem)..................1 50
Setting (remo tecontrol)........................ 15 0
Switching on/off (control panel )........... 14 9
ST EER CONT ROL
Fu nction/no tes..................................... 19 0
Ste ering wheel
Ad justing (electrically)........................... 108
Ad justing (manually). ............................. 107Buttons..................................................
24 6
Car e...................................................... 385
Oper ating the memory function.............1 11
St eering wheel heater...........................1 08
Ste ering wheel gearshift paddles............ 17 0
Ste ering wheel heater
Swit ching on/of f................................... 108
St ow age areas
see Loading
see Stow age space
St ow age comp artments
see Loading
see Stow age space
St ow age space
Armrest.................................................. 11 4
Centre console....................................... 11 4
Door....................................................... 11 4
Glo vecompa rtment............................... 11 4
USB ports.............................................. 11 4
Sulphur content........................................4 32
Sur round lighting
Setting................................................... 13 4544
Index
Internal use only