battery MERCEDES-BENZ C-CLASS SALOON 2012 User Guide

*
NO
TEBattery discharge caused bysta‐
tionary heater or stationary ventilation
operation Ope
rating thest ationary heater or stationary
ve ntilation drains the batter y. #
After heating or ventilating theve hicle
twice, drive for a longer period of time. Re
quirements:
R The fuel tank is filled toat least there ser ve
le ve l. #
Set the desired temp erature using thew
button (/ page144). #
Press the& button.
The red or blue indicator lamp on button will
light up or go out.
The colours of the indicator lamp ha vethefo l‐
lowing meanings:
R Blue: stationary ventilation is switched on.
R Red:thest ationary heater is swit ched on.
R Yello w: the departure time is preselected. The
stationary heater/ ventilation will switch off
au tomatically af ter 50 minutes.
Operation using the app: thest ationary
heater/ ventilation can also be operated via the
Mercedes me connect app. You can find fur ther
information in the separate Owner's Manual at
https://moba.i.daimler.com/mar kets/ece-r ow/
baix/cars/connectme/en_GB/#emotions/
St artseite.htm l.
Setting thest ationary heater/stationary ven‐
tilation via the multimedia sy stem
Multimedia sy stem:
4 Vehicle 5
b Climate control
5 Auxiliary heating
Yo u can pre-set thre e departure times for auto‐
matic activation of thest ationary heater. #
Select an option.
Setting thest ationary heater/ventilation via
re mo tecont rol
Re quirements:
R The fuel tank is filled toat least there ser ve
le ve l. Switching on immedia
tely #
Press and hold theu button.
Setting the departu retime #
Brie fly press theu button. #
Press the, or. button repeatedly
until the time tobe changed appears on the
displa y. 15 0
Climate cont rol
Internal use only

+
ENVIRONMENTAL
NOTEEnvironmental
dama gedue toimproper disposal of bat‐
te ries Batteries conta
intoxic and cor ro‐
sive subs tances. #
Ta
ke dischar ged batteries to a
qu alified specialist workshop or to a
collection point for used batteries. Re
quirements:
R One CR2450 lithium battery #
Push a pointed object into recess 1. #
Slide battery co ver2 backwards in the
direction of the ar row. #
Insert new battery 3with the lettering
fa cing up wards. #
Slide battery co ver2 inthe opposite direc‐
tion tothe ar row onto there mo tecontrol
until the battery co ver engages. Problems with
there mo tecont rolfo r the
st ationary heater/ventilation
FA IL¨
¨ appea rson there mo tecont rol dis‐
play
Po ssible cause:
R The signal transmission between the trans‐
mitter and there cei ver is malfunctioning. #
Change your position in relation totheve hi‐
cle, moving closer if necessar y.
FA IL appea rson there mo tecont rol display
Po ssible cause:
R The star ter battery is not suf ficiently
ch arge d. #
Char gethest ar ter batter y.
Po ssible cause:
R The fuel tank content is below there ser ve
fuel le vel. #
Refuel at the nearest filling station. 15 2
Climate cont rol
Internal use only

St
arting theve hicle with theke y in thesto w‐
age compa rtment (emer gency operation
mode)
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
message appears in the multifunction displa y,
yo u can start theve hicle in emer gency operation
mode. #
Makesure that the mar ked space 2is
em pty. #
Remo vetheke y1 from theke yring. #
Place theke y1 inthe mar ked space 2on
th e symbol 3.
The vehicle will start af ter a short time.
If yo ure mo vetheke y1 from the mar ked
space 2the engine continues running. For
fur ther engine starts ho wever,th eke y1
must be located in the mar ked space 2on
th e symbol 3during the entire journe y. #
Have theke y1ch ecked at a qualified spe‐
cialist workshop.
If th eve hicle does not star t: #
place theke y1 inthe mar ked space 2
and lea veitth ere. #
depress the brake pedal and start theve hicle
using thest art/ stop button.
% You can also swit chon the po wer supp lyor
th e ignition with thest art/ stop button. St
arting theve hicle via Remo teOnline serv‐
ices Cooling or heating
theve hicle interior before
commencing your journey
Ensure thefo llowing before starting the engine:
R the legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
R it is safe tostart and runth e engine where
yo ur vehicle is par ked.
R the fuel tank is su fficiently full.
R thest ar ter battery is suf ficiently charge d.
Charging thest ar ter battery be fore starting
th e jou rney
If th eve hicle battery is dischar ged, you can
re cei vea message on your smartphone. You can
th en start theve hicle with the smartphone to
ch arge the batter y.The vehicle is automatically
switched off af terte n minu tes. 15 6
Driving and pa rking
Internal use only

%
The electric parking brake is only securely
applied if the indicator lamp is lit continu‐
ously.
Re leasing #
Swit chon the ignition. #
Pull handle 1.
The red! indicator lamp in the instru‐
ment clus ter goes out.
Emer gency braking #
Press and hold handle 1.
As long as theve hicle is driving, theRelease
parking brake message is displa yed and the
re d! indicator lamp flashes.
When theve hicle has been braked to a
st andstill, the electric parking brake is
applied. The red! indicator lamp lights
up in the instrument clus ter. Information on collision de
tection on a
pa rked vehicle If a collision is de
tected when theto w- aw ay pro‐
te ction is primed on a loc kedve hicle, you will re
cei vea notification in the multimedia sy stem
when you swit chon the ignition.
Yo u will recei veinformation about thefo llowing
points:
R The area of theve hicle that may ha vebeen
damaged.
R The forc e of the impact.
The following situations can lead toinadver tent
acti vation:
R The pa rked vehicle is mo ved, e.g. in a two-
st or ey garage.
% Deactivate tow- aw ay protection in order to
pr eve nt inadver tent acti vation. If you deacti‐
va te tow- aw ay protection, collision de tection
will also be deactivated.
Sy stem limits
De tection may be restricted in thefo llowing sit‐
uations:
R theve hicle is damaged without impact, e.g. if
an outside mir ror is torn off or the paint is
damaged byakey
R an impact occurs at low speed R
the electric parking brake is not applied Note
s on parking up theve hicle If
yo u lea vetheve hicle par ked up for longer than
six weeks, it may suf fer dama gethro ugh disuse.
The 12V battery may also be impaired or dam‐
aged byheavy discharging.
% Further information can be obtained at a
qu alified specialist workshop.
* NO
TEPlug-in hybrid #
Obser vethe no tes about the high-volt‐
age battery in the Supplement. Yo u
could otherwise failto recognise dan‐
ge rs. St
andby mode (extension of the star ter bat‐
te ry 's period out of use) St
andby mode function
% This function is not available for all models. 184
Driving and pa rking
Internal use only

If
standby mode is activated, ene rgy loss will be
minimised during extended pe riods of non-oper‐
ation.
St andby mode is characterised bythefo llowing:
R The star ter battery is preser ved.
R The maximum non-operational time appears
inthe media displa y.
R The connection toonline services is inter rup‐
te d.
R The ATA (anti-theft alarm sy stem) is una vaila‐
ble.
R The interior pr otection and tow- aw ay protec‐
tion functions are not available.
R The function for de tecting collisions on a
pa rked vehicle is not available.
If th efo llowing conditions are fulfilled, standby
mode can be activated or deactivated using the
multimedia sy stem:
R The engine is switched off.
R The ignition is switched on.
Exceeding theve hicle's displa yed non-opera‐
tional time may cause incon venience, i.e. it can‐ not be guaranteed
that thest ar ter battery will
re liably start the engine.
The star ter battery must be charge dfirs t in the
fo llowing situations:
R The vehicle's non-operational time must be
ex tended.
R The Battery charge insufficient for standby
mode messa geappears in the media displa y.
% Standby mode is automatically deactivated
when the ignition is switched on.
Ac tivating/deactivating standby mode
Multimedia sy stem:
4 Vehicle 5
î Vehicle settings
5 Standby mode
% This function is not available for all models. #
Activate Oor deacti vate ª the function.
When you activate the function, a prom pt
appears. #
Select Yes.
St andby mode is activated. Driving and driving saf
ety sy stems Driving sy
stems and your responsibility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are only
aids. They are not a substitute foryo ur attention
to the sur roundings and do not relie ve you of
yo ur responsibility per taining toroad traf fic la w.
The driver is alw aysre sponsible for maintaining
a safe dis tance totheve hicle in front, forve hicle
speed, for braking in good time and forst ay ing
in lane. Pay attention tothe tra ffic conditions at
all times and inter vene when necessary . Be
aw are of the limitations rega rding the safe use of
th ese sy stems.
Driving sy stems can neither reduce therisk of
accident if youfa ilto adapt your driving style nor
ove rride the la wsof ph ysics. They cannot alw ays
ta ke into account road, weather or traf fic condi‐
tions. Driving and park
ing18 5
Internal use only

R
AIRMATIC
Coupling up a trailer
* NO
TEDama getothest ar ter battery due
to full dischar ge Charging
the trailer battery using the po wer
supply of the trailer can damage thest ar ter
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y.#
Remo vethe co ver cap from the ball head and
st ore it in a safe place. #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. #
Open the soc ket cap. #
Inse rtthe plug with lug 1in groo ve3 on
th e soc ket. #
Turn bayonet coupling 2totheright as far
as it will go. #
Let the cap engage. #
Secure the cable tothe trailer with cable ties
(only if you are using an adap ter cable). #
Make sure that the cable is alw ays slack for
ease of mo vement during cornering. Under
thefo llowing conditions, a message may
appear on the multifunction display even if the
trailer has been connected cor rectly:
R LEDs ha vebeen ins talled in the trailer light‐
ing sy stem.
R The cur rent has fallen below the trailer light‐
ing sy stem's minimum cur rent (50 mA).
% Accessories can be connected tothe perma‐
nent po wer supp lyup to180 W and tothe
po we r supp lythat is swit ched on via the igni‐
tion loc k.
Un coupling a trailer &
WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
ine rtia-activated brake, your hand may
become trapped between theve hicle and the
trailer dr awbar. #
Do not uncouple trailers with an
engaged overrun brake. 240
Driving and pa rking
Internal use only

Te
lephone menu overview 1
Blue tooth ®
device name of the cur rently
connected mobile phone
2 Signal stre ngth of the mobile phone network
fo rth e cur rently connected and selected
mobile phone
3 Battery status of the cur rently connected
and selected mobile phone
4 ¢ (telephone ready) or w(call active) 5
Contacts (/page 321)
6 Call list (/page 323)
7 Text message
8 One mobile phone connec ted: Active call.
Tw o mobile phones connected: changes view
between telephone 1 and 2 or Active call
9 Devices (/page 316) A
Options
Symbols 1to4 are not shown until af ter a
mobile phone has been connected tothe multi‐
media sy stem. The symbols depend on your
mobile phone and your mobile phone network
pr ov ider. Multimedia sy
stem 315
Internal use only

R
The star ter battery is suf ficiently charge d.
If re stra int sy stems such as airbags or seat belt
te nsioners ha vebeen activated af ter an acci‐
dent, the Mercedes-Benz emer gency call sy stem
may automatically initiate an emer gency call.
The emergency call has been made: R Avo ice connection is made tothe Mercedes-
Benz emer gency call centre.
R A messa gewith accident data is transmit ted
to the Mercedes-Benz emer gency call centre.
The Mercedes-Benz eme rgency call centre
can transmit theve hicle position data toone
of the public emer gency services call cen‐
tres.
R In cer tain situations data is also transmitted
in thevo ice channel tothe Mercedes-Benz
emer gency call centre.
This allo wsmeasu resfo rre scue, reco very or
to wing toa Mercedes-Benz Service Cent reto
be initiated quickl y.
The SOS button in theove rhead control panel
fl ashes until the emer gency call is finished. It is not possible
toimmediately end an auto‐
matic emer gency call.
If th e Mercedes-Benz emer gency call sy stem
cann otconnect tothe Mercedes-Benz emer‐
ge ncy call centre, the emer gency call is au tomat‐
ically sent tothe public emer gency services call
centre.
If no connection can be made tothe public
emer gency services, a cor responding message
appears inthe displa y. #
Dial the emer gency call number 11 2onyour
mobile phone.
If an eme rgency call has been initiated:
R Remain in theve hicle if thero ad and traf fic
conditions permit youto do so until a voice
connection is es tablished with the emer‐
ge ncy call centre operator.
R Based on the call, the operator decides
whe ther it is necessary tocall rescue teams
and/or the police tothe accident site.
R If no vehicle occupant answers, an ambu‐
lance is sent totheve hicle immediately. Tr
iggering a manual emer gency call #
Press and hold the SOS button in theove r‐
head control panel for at least one second.
The emer gency call has been made:
R Avo ice connection is made tothe Mercedes-
Benz emer gency call centre.
R A messa gewith accident data is transmit ted
to the Mercedes-Benz emer gency call centre.
The Mercedes-Benz eme rgency call centre
can transmit theve hicle position data toone
of the public emer gency services call cen‐
tres.
R Remain in theve hicle if thero ad and traf fic
conditions permit youto do so until a voice
connection is es tablished with the emer‐
ge ncy call centre operator.
R Based on the call, the operator decides
whe ther it is necessary tocall rescue teams
and/or the police tothe accident site.
R In cer tain situations data is also transmitted
in thevo ice channel tothe Mercedes-Benz
emer gency call centre. 338
Multimedia sy stem
Internal use only

This allo
wsmeasu resfo rre scue, reco very or
to wing toa Mercedes-Benz Service Cent reto
be initiated quickl y.
If th e Mercedes-Benz emer gency call sy stem
cann otconnect tothe Mercedes-Benz emer‐
ge ncy call centre, the emer gency call is au tomat‐
ically sent tothe public emer gency services call
centre.
If no connection can be made tothe public
emer gency services, a cor responding message
appears inthe media displa y. #
Dial the emer gency call number 11 2onyour
mobile phone.
Ending an unin tentional emer gency call #
Select ~onthe multifunction steering
wheel.
Data transfer of the Mercedes-Benz emer‐
ge ncy call sy stem
In theeve nt of an auto matic or manual emer‐
ge ncy call thefo llowing data is transmitte d,for
ex ample:
R Vehicle's GPS position data R
GPS position data on thero ute (a few hun‐
dred metres before the incident)
R Direction of tra vel
R Vehicle identification number
R Vehicle drive type
R Number of people de term ined tobe in the
ve hicle
R Whe ther Mercedes me connect is available
or not
R Whe ther the emer gency call was initiated
manually or automatically
R Time of the accident
R Language setting on the multimedia sy stem
Fo r accident clarification purposes, thefo llowing
measures can be take n up toan hour af terthe
emer gency call has been initia ted:
R The cur rent vehicle position can be de ter‐
mined.
R Avo ice connection totheve hicle occupants
can be es tablished %
ForRu ssia: various functions, e.g. receiving
traf fic information, cannot be used for up to
two hou rsafte r sending an emergency call.
Self diagnosis function of the emer gency call
sy stem
Yo ur car verifies the operability of the emer‐
ge ncy call sy stem each time the ignition is ON.
In case of sy stem failure, you will be informed
with text messa geon the instrument clus ter and
with red indicator SOS NOT READY onthe dis‐
pla y.
Please, make sure, that during 30 seconds af ter
switching ignition ON there d indicator SOS
NOT READY inthe upper right corner of display
is switched OFF, this means the emer gency call
sy stem passed diagnostics successfully.
St arting/ending ERA-GLONASS test mode
Re quirements:
R The star ter battery is suf ficiently charge d.
R The ignition is switched on.
R The vehicle has been stationary for at least
one minute. Multimedia sy
stem 339
Internal use only

fi
ed based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermedi‐
ate stops
R mainly short-dis tance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
ty re s must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS service inter val display can
calculate the service due date only when the
battery is connec ted. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (/ page372). Engine com
partment Ac
tive bonn et(pedestrian pr otection) Operation of
the active bonnet (pedestrian
pr otection)
In cer tain accident situations, the actuation of
th e active bonn etreduces therisk of injury to
pedestrians. The rear area of the bonn etis
ra ised byappr oximately 85 mm.
Fo rth e drive tothewo rkshop, reset the actuated
active bonn etyourself (/ page373).
Af terth e active bonn ethas been actuated,
pedestrian pr otection may be limited.
Ha ve the full functionality of the active bonn et
re stored in a qualified specialist workshop. Re
setting the active bonnet &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. Maintenance and care
373
Internal use only