2015 MERCEDES-BENZ C-CLASS COUPE warning

It may be best to deactivate ESP
®
in the follow-
ing situations:
R when using snow chains
R in deep snow
R on sand or gravel
i Activate ESP ®
as soon as the situations
describe dabove no longer apply. ESP ®
will
otherwise not be abletos tabilise the vehicle
if the vehicle starts to skid or awheel starts to
spin.
Deactivating/activating ESP ®
You can deactivate or activate ESP ®
via the on-
board computer (Y page 244)
ESP ®
deactivated:
The å ESP®
OFF warning lamp in the instru-
ment cluster lights up.
ESP ®
activated:
The å ESP®
OFF warning lamp in the instru-
ment cluster goes out.
Characteristic swhen ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ESP®
warning lamp in the
instrument cluster flashes. In such situations,
ESP ®
willn ot stabilise the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability
R Engine torque is no longer limited and the
drive wheelsa re abletospin
The spinning of the wheelsr esults inacutting
action for better traction on loose surfaces.
R Traction control is still activated
R COLLISION PREVENTION ASSISTisnol onger
available; nor is it activated if you brake firmly
with assistance from ESP ®
R PRE-SAFE ®
is no longer available; it is also not
activated if you brake firmly with assistance
from ESP ®
R PRE-SAFE ®
Brake is no longer available; it is
also not activated if you brake firmly with
assistance from ESP ®
R ESP ®
still provide ssupport when you brake
firmly Deactivating/activating ESP
®
(Mercedes‑AMG vehicles) Important safety notes
i Observe the "Important safety notes" sec-
tion (Y page 66).
You can select betwee nthe following statuses
of ESP ®
:
R ESP ®
is activated
R SPORT handling mode is activated
R ESP ®
is deactivated
ESP ®
is activated every time the engine is
switched on, regardless of whether ESP ®
was
deactivated before the engine was switched off. G
WARNING
When SPORT handling mode is activated,
there is agreater risk of skidding and acci-
dents.
Only activate SPORT handling mode in the sit- uations describe dinthe following. G
WARNING
If you deactivate ESP ®
,E SP ®
no longer sta-
bilises the vehicle .There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
In the following situations, it may be better to
activate SPORT handling mode or deactivate
ESP ®
:
R when using snow chains
R in deep snow
R on sand or gravel
R on specially designated roads when the vehi-
cle's own oversteering and understeering
characteristics are desired
Driving in SPORT handling mode or without
ESP ®
requires an extremely qualifieda nd expe-
rienced driver.
i Activate ESP ®
as soon as the situations
describe dabove no longer apply. ESP ®
will
otherwise not be abletos tabilise the vehicle
if the vehicle starts to skid or awheel starts to
spin. Driving safety systems
73Safety Z

Deactivating/activating ESP
®X
To activate SPORT handling mode: briefly
press button :.
The M handlin gmodew arnin glamp in the
instrumen tcluster lights up. The SPORT
SPORThan‐
han‐
dling mode
dling mode message appears in th emulti-
function display.
X To deactivate SPORT handling mode:
briefl
ypress button :.
The M handlin gmodew arnin glamp in the
instrumen tcluster goe sout.
X To deactivate ESP ®
:press button :until
the å ESP®
OF Fw arnin glamp lights up in
th ei nstrument cluster.
The ÷ OFF OFFmessage appears in th emulti-
function display.
X To activate ESP ®
:briefl ypress button :.
The å ESP®
OF Fw arnin glamp in the
instrumen tcluster goe sout.T he ÷ ON
ON
message appears in th emultifunction display.
Characteristics of activate dSPORT han-
dling mode
If SPORT handlin gmodeisa ctivated and on eor
mor ewheels start to spin ,the ÷ ESP®
warn-
in gl amp in th einstrument cluster flashes .ESP ®
only stabilises th evehicl etoal imiteddegree.
Whe nSPORT handlin gmodeisa ctivated:
R ESP ®
only improves drivin gstabilit ytoa limi-
te dd egree
R Traction control is still activated
R Engin etorque is no longer limite dand the
drive wheels are able to spin
The spinning of th ewheels result sinacutting
action fo rbette rtraction on loos esurfaces.
R ESP ®
still provides support when you brake
firmly Characteristics when ESP
®
is deactivated
If ESP ®
is deactivated and on eormorew heels
start to spin ,the ÷ ESP®
warnin glamp in the
instrumen tcluster doe snotflash. In suc hsitua-
tions, ESP ®
will no tstabilis ethe vehicle.
If you deactivat eESP®
:
R ESP ®
no longer improves drivin gstability
R Engin etorque is no longer limite dand the
drive wheels are able to spin
The spinning of th ewheels result sinacutting
action fo rbette rtraction on loos esurfaces.
R Traction control is still activated
R COLLISION PREVENTION ASSIST is no longer
available; no risitactivated if you brak efirmly
wit ha ssistanc efromE SP®
R PRE-SAFE ®
is no longer available; it is also not
activated if you brak efirmly wit hassistance
from ESP ®
R PRE-SAFE ®
Brake is no longer available; it is
also no tactivated if you brak efirmly with
assistanc efromE SP®
R ESP ®
still provides support when you brake
firmly
ESP ®
trailer stabilisation General notes
ESP ®
trailer stabilisation is no tavailable in
Mercedes-AMG vehicles.
If your vehicle/trailer combination begin sto
lurch, ESP ®
assist syou in this situation .ESP ®
slows th evehicl edown by brakin gand limiting
th ee ngineo utput until th evehicle/trailer com-
bination has stabilised.
Important safet ynotes G
WARNING
If roa dand weather condition sare poor,
trailer stabilisation will no tbeable to prevent
th ev ehicle/trailer combination from swerv-
ing. Trailer swithah ighc entre of gravit ycan
ti po verb efore ESP ®
can detec tthis. There is
ar iskofana ccident.
Always adapt your drivin gstyle to th eprevail-
in gr oada nd weather conditions. 74
Driving safet
ysyste msSafety

If yourv
ehicle/trailer combination begins to
lurch, you can only stabilise the vehicle/trailer
combination by depressing the brake firmly.
ESP ®
trailer stabilisatio nisactive above speeds
of approximately 65 km/h.
ESP ®
trailer stabilisatio ndoes not work if ESP ®
is deactivated or disabled because of amalfunc-
tion.
Crosswind Assist General notes
Strong crosswind gusts can impair the road-
holding of yourv ehicle when driving straight
ahead. The crosswind driving assistance func-
tion integrated in ESP ®
noticeably reduces
these impairments.
Depending on the direction and intensity of the
side wind, ESP ®
is activated automatically.
ESP ®
intervenes with stabilising braking to
assisty ou in keeping the vehicle in the lane.
Crosswind Assist is active at vehicle speeds
above 80 km/h when driving straight aheador
cornering gently.
Important safety notes Crosswind Assist does not work if ESP ®
is deac-
tivated or disabled because of amalfunction. EBD (electroni
cbrake force distribu-
tion)
General notes EBD monitors and controls the brake pressure
on the rear wheelstoi
mprove driving stability
whileb raking.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 66). G
WARNING
If EBD is malfunctioning, the rear wheelsc an
lock, e.g. under full braking. This increases the risk of skidding and an accident.
You shouldt herefore adapt yourd riving style
to the different handling characteristics. Have the brake system checked at
aqualifieds pe-
cialist workshop.
Observe information regarding indicator and
warning lamps( Ypage 287) as well as display
messages (Y page 256). ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. In addition to
the braking function, ADAPTIVE BRAKE also has
the HOLD function (Y page 192) and hill start
assist (Y page 149). PRE-SAFE
®
Brake
General notes PRE-SAFE
®
Brake can help you to minimise the
risk of acollision with avehicle aheadora
pedestrian, and reduce the effects of such a
collision. If PRE-SAFE ®
Brake has detected arisk
of ac ollision, you willbew arned visually and
acoustically as well as by automatic braking.
i Pay attention to the important safety notes
in the "Driving safety systems" section
(Y page 66).
PRE‑SAFE ®
Brake is only available in vehicles
with the Driving Assistance Plusp ackage.
For PRE-SAFE ®
Brake to assist you when driving,
the radars ensor system and the camera system
must be switched on and operational.
With the help of the radars ensor system and the
camera system, PRE-SAFE ®
Brake can detect
obstacle sthat are in front of yourv ehicle for an
extended period of time.
In addition, pedestrians in the path of yourv ehi-
cle can be detected.
PRE-SAFE ®
Brake detects pedestrians using
typica lcharacteristics such as the body con-
tours and posture of aperson standing upright.
i Observe the restrictions describe
dinthe
"Important safety notes" section
(Y page 76). Driving safety systems
75Safety Z

Important safety notes
G
WARNING
PRE-SAFE ®
Brake will initially brak eyour vehi-
cle by apartial application of th ebrakes if a
danger of collision is detected. Ther emay be
ac ollision unless you brak eyourself .Even
after subsequen tfull application of th ebrakes
ac ollision canno talways be avoided, partic-
ularly when approachin gattoohigh aspeed.
Ther eisar iskofana ccident.
Always apply th ebrakes yourself and tr yto
tak eevasive action ,provide ditiss afetodo
so.
In th eevent of apartial application of th ebrakes,
th ev ehicl eisb raked wit hupto50%of th efull
braking pressure. G
WARNING
PRE-SAFE ®
Brake canno talways clearly iden-
tify objects and comple xtraffic conditions.
In these cases, PRE-SAFE ®
Brake may:
R giv eanu nnecessary warning and then
brak ethe vehicle
R neither giv eawarning no rintervene
Ther eisar iskofana ccident.
Always pay particular attention to th etraffic
situation and be read ytob rake, especially if
PRE-SAFE ®
Brake warn syou. Terminate the
intervention in anon-criti cal driving situation. G
WARNING
PRE-SAFE ®
Brake canno talways clearly iden-
tify people, especially if they are moving .In
these cases, PRE-SAFE ®
Brake canno tinter-
vene. Ther eisariskofana ccident.
Always pay particular attention to th etraffic
situation and be read ytob rake, especially if
PRE-SAFE ®
Brake warn syou.
In order to maintai nthe appropriat edistanc eto
th ev ehicl einf rontand thus preven tacollision,
you must apply th ebrakes yourself. G
WARNING
PRE-SAFE ®
Brake does no treact:
R to small people, e.g. children
R to animals
R to oncomin gvehicles
R to crossing traffic
R when cornering
As aresult ,PRE-SAFE ®
Brake may neither
giv ew arning snorinterven einall critical sit-
uations. Ther eisariskofana ccident.
Always pay careful attention to th etraffic sit-
uation and be read ytob rake.
In th eevent of snowfall or heav yrain ,detection
can be impaired.
Detection by th eradar sensor system is also
impaire dintheevent of:
R dirt on th esensor soro bscured sensors
R interferenc ebyother radar sources
R stron gradar reflections, for example, in multi-
store ycar parks
R an arrow vehicl etravellin ginfront,e.g.a
motorcycle
R av ehicl etravellin ginfrontonadifferen tline
Detection by th ecamera system is also impaired
in th eevent of:
R dirt on th ecamera or if th ecamera is covered
R glar eont hecamera system, e.g. from th esun
bein glow in th esky
R darkness
R if:
- pedestrian smoveq uickly, e.g. int othe path
of th evehicle
- thec amera system no longer detects a
pedestrian as aperson due to special cloth-
ing or other objects
- ap edestrian is concealed by other objects
- thet ypical outlin eofaperson is no tdistin-
guishable from th ebackground
Followin gdamag etothefron tend of th evehicle,
have th eradar sensor setting sand operation
checke dataq ualified specialist workshop. This
also applie stocollision sats low speeds where
there is no visible damag etothefron toft he
vehicle. 76
Driving safety systemsSafety

Following damag
etothe windscreen, hav ethe
configuration and operation of the camera sys-
tem checked at aquali fied specialist workshop.
Function X
To activate/deactivate: activate or deacti-
vate PRE-SAFE ®
Brake in the on-board com-
puter (Y page 245).
If the PRE-SAFE ®
Brake is not activated, the
æ symbol appears in the multifunction dis-
play.
Thi sfunction will issue awarning if:
R at as peed of around 30 km/h or more ,the
distance maintaine dtothe vehicle travelling
in front is insufficient for several seconds
The · distance warning lamp then lights
up in the instrument cluster.
R at as peed of around 7km/h or more ,you
rapidl yapproach avehicle in front or apedes-
trian
An intermittent warning tone will then sound
and the ·distance warning lamp lights up
in the instrument cluster.
X Brake immediately to defuse the situation.
or X Take evasive action provide ditissafetodo
so.
The PRE-SAFE ®
Brake function can also brake
the vehicle automaticall yunder the following
conditions:
R the driver and front passenger hav ethei rseat
belts fastened
and
R the vehicle speed is between approximately
7k m/h and 200 km/h
At as peed of up to approximately 70 km/h,
PRE-SAFE ®
Brake can also detect:
R stationar yobjects in the path of your vehicle,
e.g. stopped or parked vehicles
R pedestrians in the path of your vehicle
i If there is an increased risk of
acollision,
preventive passenger protection measures
(PRE-SAFE ®
PLUS) are triggered (Y page 54).
If the risk of acollision with the vehicle in front
remains and yo udonot brake, take evasive
action or accelerate significantly ,the vehicle
may perform automatic emergency braking up
to the point of ful lbrake application. Automatic emergency braking is not performe
duntil imme-
diately prior to an imminent accident.
You can prevent the intervention of PRE-SAFE ®
Brake at any time by:
R depressing the accelerator pedal further
R activating kickdown
R releasing the brake pedal
The braking action of PRE-SAFE ®
Brake is ended
automaticall yif:
R youm anoeuvre to avoid the obstacle
R there is no longer arisk of collision
R there is no longer an obstacl edetected in
front of your vehicle STEE
RCONTROL
General notes STEER CONTROL helps yo
ubytransmitting a
noticeable steering force to the steering wheel
in the directio nrequired for vehicle stabilisation.
Thi ssteering support is provide dinparticula rif:
R both right wheels or both lef twheels are on a
we tors lippery roa dsurface whe nyou brake
R the vehicle starts to skid
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 66).
No steering support is provide dfrom STEER
CONTROL, if:
R ESP ®
is deactivated
R ESP ®
is malfunctioning
R the steering is faulty
If ESP ®
is malfunctioning ,you will be assisted
further by the electrica lpower steering. Protection against theft
Immobiliser
The immobilise rprevents your vehicle from
being starte dwithou tthe correct key. Protection against theft
77Safety Z

Key
Important safety notes
United Kingdom only: G
WARNING
Whe nthe doubl elocks are activated, the
door scan no longer be opened from the
inside. People in th evehicl ecan no longer get
out ,e.g.inh azardous situations. There is a
ris kofi njury.
Therefore ,donotleav eany people unsuper-
vised in th evehicle, particularly children ,eld-
erl yp eople or people in need of special assis-
tance .Don otactivat ethe doubl eloc kw hen
people are in th evehicle.
If th evehicl ehas been locke dfromt heoutside,
th ed oubl eloc kf unction is activated as stand-
ard. It is then no tpossibl etoopen th edoors
from inside th evehicle. You can deactivat ethe
doubl eloc kfunction by deactivating th einterior
motion sensor (see th eseparat emultimedia
system operating instructions). The door scan
then be opened from th einside after th evehicle
has been locke dfromt heoutside .The anti-theft
alarm system is triggered if th edoor is opened
from th einside. Switc hoff th ealarm
(Y page 78).
All countries: G
WARNING
If children are lef tunsupervised in th evehicle,
they could:
R open doors, thereby endangering other per-
son sorr oad users
R get out and be struc kbyoncomingt raffic
R operate vehicl eequipmen tand become
trapped ,for example
In addition ,the children could also set the
vehicl einm otion,for example, if they:
R release th eparking brake
R shift th eautomatic transmission out of park
position Porshift manual transmission into
neutral
R start th eengine
There is ariskofana ccidentand injury. Whe
nleaving th evehicle, always tak ethe key
wit hyou and loc kthe vehicle. Never leave
children and animals unattended in th evehi-
cle .Keept he keys out of th ereac hofc hildren. G
WARNING
If you attach heav yorlargeobjects to th ekey,
th ek eycould be unintentionally turne dinthe
ignition lock. This could caus ethe engin eto
be switched off .There is ariskofana ccident.
Do no tattach any heav yorlargeobjects to the
key. Remove any bulk ykeyrings before insert-
ing th ekeyintot he ignition lock.
! Kee
pthe keya way from stron gmagnetic
fields. Otherwise ,the remot econtro lfunction
could be affected.
Stron gmagnetic fields can occur in th evicin-
it yofp owerful electrical installations.
Do no tkeept he key:
R wit he lectronic devices, e.g. amobile phone
or another key
R wit hm etallic objects ,e.g.c oins or metal film
R inside metallic objects ,e.g.a metal case
This can affec tthe key's functionality.
Vehicles wit hKEYLESS-G Ostart function: do
no tk eept he keyo nthe parcel shelf or in the
boot .Otherwise ,the keym ay no tbed etected,
e.g. when starting th eengineu singthe Start/
Stop button.
Ac heck whichperiodically establishes aradio
connection between th evehicl eand th ekey
determine swhether avalid ke yisint hevehicle.
This occurs, for example:
R when starting th eengine
R whils tdriving
R when th eexternal door handles are touched
R during convenience closing 80
KeyOpening and closing

Removin
gthe emergenc ykey element X
Push release catch :in the direction of the
arrow and ,atthe same time ,remove emer-
gency key element ;from the key.
Further information:
R Unlocking the driver' sdoor(Ypage 88)
R Locking the vehicl e(Ypage 88)
Inserting the emergenc ykey element X
Push emergency key element ;completely
into the key unti litengages and release
catch :is back in its basic position. Battery of the key
Important safety notes G
WARNING
Batterie scontain toxic and corrosiv esubstan-
ces. If batteries are swallowed, it can resul tin
severe health problems .There is ariskoff atal
injury.
Kee pbatteries ou tofthe reach of children. If
ab attery is swallowed, see kmedica lattention
immediately. H
Environmental note Batterie
scontain pollutants.
It is illega ltodispose of them
with the househol drubbish.
The ym ustb ec ollected sep-
arately and disposed of in an environmentally responsible
recycling system.
Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to
aquali fied spe-
cialist worksho portoacol-
lection point for used batter-
ies.
Mercedes-Benz recommend sthat yo uhavet he
batteries replaced at aquali fied specialist work-
shop.
Checking the battery X
Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharge difbattery check
lamp :doe snot light up briefly.
X Replace the battery (Y page 83).
If the key battery is checke dwithin the signal
reception rang eofthe vehicle, pressing the
& or% button:
R locks or
R unlocks the vehicle
i Yo
uc an obtain abattery from any qualified
specialist workshop.
Replacing the battery Yo
ur equire aCR20253Vc ellb attery.
X Take the emergency key element ou tofthe
key (Y page 83). Key
83Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 343).
or X Jump-start the vehicle (Y page 345).
or X Consult aqualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The key is in
the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 83) and replace if necessary
(Y page 83).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from
apowerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost
akey. X
Have the key deactivated at aqualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Doors
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle. If the vehicle has been locked from the outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (see the separate multimedia
system operating instructions). The doors can
then be opened from the inside after the vehicle
has been locked from the outside. The anti-theft alarm system is triggered if the door is opened
from the inside. Switch off the alarm
(Y page 78).
All countries: 86
DoorsOpening and closing