ignition MERCEDES-BENZ CLS COUPE 2012 User Guide

In particular, the detection of obstacle
scan
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radars ources
R the possibility of strongr adar reflections,
for example, in multi-storey car parks
R an arrow vehicle travelling in front,e .g. a
motorcycle
R av ehicle travelling in front on adifferent
line G
WARNING
PRE-SAFE ®
Brake does not react:
R to people or animals
R to oncoming vehicles
R to crossin gtraffic
R when cornering
As aresult, PRE-SAFE ®
Brake may neither
give warnings nor intervene in all critical sit-
uations. There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent acol-
lision, you must apply the brakes yourself.
X To activate/deactivate: activate or deac-
tivate PRE-SAFE ®
Brake in the on-board
computer (Y page 219).
When PRE-SAFE ®
Brake is activated, the
Ä symbol appears in multifunction dis-
play, as long as the HOLD function is deac-
tivated (Y page 179). On vehicles with the
Active Parking Assist driving system, the
Ä symbol is displayed when position P
is engaged or you are driving faster than
35 km/h.
For PRE-SAFE ®
Brake to assist you when driv-
ing, the radar sensor system must be
switched on (Y page 225) and be opera-
tional. The radar sensor system is switched off auto-
matically in the vicinit
yofradio telescope
facilities in the following vehicles:
R vehicles with COMAND Online and naviga-
tion
R vehicles with Audio 20 and Becker ®
MAP
PILOT
Becker ®
MAP PILOT must be connected;
see the separate operating instructions.
The radar sensor system must be switched off
using the on-board computer in the vicinit yof
radio telescope facilities in the following vehi-
cles:
R vehicles without COMAND Online and nav-
igation
R vehicles without Audio 20 and Becker ®
MAP PILOT
R vehicles for Australia
For information on switching off the radar
sensor system using the on-board computer,
see (Y page 225).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at aqualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Anti-theft systems
Immobiliser
X To activat ewith th ekey: remove th ekey
fro mt heignitio nlock.
X To activat ewith KEYLESS-GO: switch the
ignitio noff and open the driver's door.
X To deactivate: switch on the ignition.
The immobiliser prevents you rvehicle from
being started without the correct key.
When leaving the vehicle, alway stake the key
with you and lock the vehicle. Anyone can
start the engin eifavalid key has been left
inside the vehicle. 70
Anti-theft systemsSafety

X
Remove th ekeyfrom th eignition lock.
X Press button :.
Indicato rlamp ;light supb riefly.
X Loc kthe vehicle wit hthe keyorK EYLESS-
GO.
Tow-away protection is deactivated.
Tow-away protection remains deactivated
until:
R thev ehicle is unlocked again and
R ad oor is opened and closed again and
R thev ehicle is locke dagain
To preven tafalse alarm, deactivate the tow-
away protection if you lock you rvehicle and
it:
R is being transported
R is being loaded ontoaf erry or car trans-
porter ,for example
R is parked on amovable surface, e.g. in a
split-level garage Interior motion sensor
Function When the interior motion sensor is primed, a
visual and audible alarm is triggered if move-
ment is detected in the vehicle interior. This
can occur if someon ereaches intot he vehicle
interior, for example.
Activating X
Make sure that:
R
the side windows are closed.
R the sliding sunroof is closed.
R ther eare no objects, e.g. mascots, hang-
ing on the rear-view mirror or on the grab
handles on the roof trim.
This will preven tfalse alarms.
X Mak esure that: R
thed oor sare closed.
R thes lidin gsunroo fisclosed.
R the boot lid is closed.
Only then is the interior motion sensor
primed.
X Lock the vehicle with the key or KEYLESS-
GO.
The interior motion sensor is primed after
approximately 30 seconds.
To deactivate X
Unlock the vehicle with the key or KEY-
LESS-GO.
The interior motion sensor is switched off
automatically.
Deactivating X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;flashes briefly.
X Lock the vehicle with the key or KEYLESS-
GO.
The interior motion sensor is deactivated.
The interior motion sensor remains deactiva-
ted until:
R the vehicle is unlocked againa nd
R ad ooriso peneda nd closed agai nand
R the vehicl eislocked again 72
Anti-theft systemsSafety

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variation sare pos-
sible. Not ethat your vehicle may not be
equipped with all of the function sdescri-
bed. This is also the case for system sand
function srelevan ttosafety.
i Read the information on qualified special-
ist workshops: (Y page 23). Key
Important safet
ynotes G
WARNING
Only for the United Kingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock function is activa-
ted as standard. It is then not possible to open
the doors from inside the vehicle.
Therefore, do not leave any people behind in
the vehicle, particularly children ,elderly peo-
ple or people requiring special assistance. As
ar esult, they may not be able to free them-
selves in the even tofanemergency. They
could be seriously or even fatally injured by
prolonged exposur etoextremely high or low
temperatures, for example. In this case, res-
cuing people from outside the vehicle is diffi-
cult.
Deactivate the interior motion senso rbefore
you lock the vehicle. The doors can then be
opened from the inside after the vehicle has
been locked from the outside. G
WARNING
If children are left unsupervised in the vehicle,
they could: R
open adoor from inside the vehicle at any
time, even if it has been locked
R start the vehicle using akey which has been
left in the vehicle
R release the parking brake
They could thereby endanger themselves and
others. Never leave children unsupervised in
the vehicle. Always take the key with you
when leaving the vehicle, even if you are only
leaving it for ashort time. G
WARNING
If ak ey ring is too heavy or too large, the
weight actin gonthe key could cause it to turn
in the ignition lock or catc honthe steering
wheel. This could cause the engine to be
switched off suddenly. You may lose control
of the vehicle and cause an accident. Do not
attac hany heavy or large key rings to the key
that is inserted in the ignition.
R Do not keep the key:
- with electronic devices, e.g. amobile
phone or another key
- with metallic objects, e.g. coins or metal
foil
- inside metallic objects, e.g. ametal case
This can affect the key's functionality.
Keep the key away from strong magnetic
fields. Otherwise, the remot econtrol function
could be affected. 76
KeyOpening and closing

Changing th
esettings of th elocking
system
You can chang ethe settings of th elocking
system. This mean stha tonlyt he driver' sdoor
and th efuel fille rflap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own.
X To chang ethe setting: press and hold
down the %and& buttons on the
key simultaneously for approximately six
seconds until the battery chec klamp
flashes twice ( Ypage 79).
i If th esettin goft helockin gsystem is
changed within th esignal range of th evehi-
cle ,pressin gthe & or% button:
R locks or
R unlock sthe vehicle
The ke ynow function sasfollows:
X To unlock th edriver's door: pressthe
% buttononce.
X To unlock centrally: pressthe % but-
to nt wice.
X To lock centrally: pressthe & button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock th edriver's door: touch the
inner surface of th edoor handle on the
driver' sdoor.
X To unlock centrally: touch theinner sur-
fac eoft hedoor handle on th efront-
passenger door or th erear door.
X To lock centrally: touch theouter sensor
surface on on eofthedoor handles.
X To restor ethe factor ysettings: press
and hold down the %and& buttons
simultaneousl yfor approximately six sec-
onds until th ebattery check lamp flashes
twice (Y page 79). Emergency key element
General notes If th
evehicle can no longer be locke dor
unlocked wit hthe key, use th eemergency
ke ye lement.
If you use th eemergenc ykey element to
unlock and open the driver's door or the boot
lid, the anti-thef talarm system will be trig-
gered (Y page 71).
There are several ways to tur noff the alarm:
X To turn the alarm off with the key: press
the % or& button on the key.
or
X Insert the key into the ignition lock.
or
X To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The key must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The key must be outside the vehicle.
If you unlock the vehicle using the emergency
key element, the fuel filler fla pwilln ot be
unlocked automatically.
X To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element :
Releas ecatch
; Emergency key element 78
KeyOpening and closing

Problem Possible causes/consequences and
M Solutions
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 318).
or
X Jump-start the vehicle (Y page 319).
or
X Consult aqualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. Ad
oor is open. Therefore, the key cannot be detected as easily.
X Close the door and try to start the vehicle again. There is interferenc
efrom apowerful source of radio waves.
X Start your vehicle with the key in the ignition lock. Doors
Important safety notes
G
WARNING
Only for the United Kingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock function is activa-
ted as standard. It is then not possible to open
the doors from inside the vehicle.
Therefore, do not leave any people behind in
the vehicle, particularly children, elderly peo-
ple or people requiring special assistance. As
ar esult, they may not be able to free them-
selves in the event of an emergency. They
could be seriously or even fatally injured by
prolonged exposure to extremely high or low
temperatures, for example. In this case, res-
cuing people from outside the vehicle is diffi-
cult.
Deactivate the interior motion sensor before
you lock the vehicle. The doors can then be
opened from the inside after the vehicle has
been locked from the outside. G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open adoor from inside the vehicle at any
time, even if it has been locked
R start the vehicle using akey which has been
left in the vehicle
R release the parking brake
They could thereby endanger themselves and
others. Never leave children unsupervised in
the vehicle. Always take the key with you
when leaving the vehicle, even if you are only
leaving it for ashort time. Unlocking and opening the doors
from the inside
For all countries except the United King-
dom: you can open adoor from inside the
vehicle even if it has been locked. If the vehi-
cle has previously been locked with the key
or with KEYLESS-GO, opening adoor from the
inside will trigger the anti-theft alarm system.
Switch off the alarm (Y page 71).82
DoorsOpening and closing

when
aside windo wisopened. Do not touch
or lean agains tthe side window during the
opening procedure. You could become trap-
ped between the side window and the door
frame as the side window moves down. If
there is arisk of becoming trapped, release
the switch or pull the switch upwards to close
the side window again. G
WARNING
Make sure that nobody can become trapped
as you close aside window. If there is arisk
of becoming trapped, release the switch or
press it again to open the side window again. G
WARNING
Children may injure themselves if they open
or close the side windows.
Never leave children unsupervised in the vehi-
cle. Always take the key with you when leaving
the vehicle, even if you are only leaving it for
as hort time. G
WARNING
Do not leave children unsupervised in the
vehicle, even if they are secured in achild
restraint system. The children could:
R be seriously or even fatally injured on parts
of the vehicle
R be seriously or even fatally injured by pro-
longed exposure to extremely high or
extremely low temperatures
If children open adoor, they could:
R seriously or even fatally injure other people
R get out of the vehicle and injure them-
selves, or be seriously or even fatally
injured by apassing vehicle
Activate the child-proof locks/override fea-
ture if children are travelling in the vehicle.
They could otherwise open doors or side win-
dows while the vehicle is in motion and
thereby injure themselves or others. Opening and closing the side win-
dows
The switches for all side windows are located
on the driver's door. There is also aswitch on
each door for the corresponding side window.
The switches on the driver's door take prec-
edence. :
Front left
; Front right
= Rear right
? Rear left
X Turn the key to position 1or 2in the ignition
lock.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
i If you press the switch beyond the point
of resistance, an automatic opening/clos-
ing process is started in the corresponding
direction. You can stop automatic opera-
tion by pressing again.
i You can continue to operate the side win-
dows after switching off the engine or
removing the key. This function remains
active for five minutes or until the driver's
or front-passenger door is opened.
i The side windows cannot be operated
from the rear when the override feature for
the side windows is activated (Y page 62).88
Side windowsOpening and closing

X
Touch recessed sensor surface :on the
door handle until the side windows and the
sliding sunroof are fully closed.
i Make sure you only touch recessed sen-
sor surface :.
X Make sure that all the side windows and the
sliding sunroof are closed.
X To interrupt convenience closing:
release recessed sensor surface :on the
door handle. Resetting the side windows
If as ide window can no longer be closed fully,
you must reset it.
X Close all doors.
X Turn the key to position 1or 2in the ignition
lock.
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed. (Y page 88)
X Hold the switch for an additional second.
If the side window opens again slightly:
X Immediately pull the corresponding switch
on the door control panel until the side win-
dow is completely closed (Y page 88).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. 90
Side windowsOpening and closing

Change th
epositio nofthe sliding sunroof
or open aside window slightly to reduce or
eliminate these noises. Operating the sliding sunroof
Opening and closing Overhead control panel
:
To raise
; To open
= To close/lower
X Turn the key to position 1or 2in the ignition
lock.
X Press or pull the 3switch in the corre-
sponding direction.
i If you press the 3switch beyond the
point of resistance, an automatic opening/
closing process is started in the corre-
sponding direction. You can stop automatic
operation by pressing again.
The sun protection cover automatically opens
along with the sliding sunroof. You can open
or close the sun protection cover manually
when the sliding sunroof is raised or closed.
i You can continue to operate the sliding
sunroof after switching off the engine or
removing the key. This function remains
active for five minutes or until you open a
front door. Rain-closing feature If the key is in position
0in the ignition lock
or if it is removed, the sliding sunroof closes
automatically:
R if it starts to rain
R at extreme outside temperatures
R after six hours
R if there is amalfunction in the power supply
The rear of the sliding sunroof is then raised
in order to ventilate the vehicle interior.
i If the sliding sunroof is obstructed while
being closed by the rain-closing feature, it
opens again slightly. The rain-closing fea-
ture is then deactivated.
The sliding sunroof does not close if:
R it is raised at the rear.
R it is blocked.
R no rain is falling on the area of the wind-
screen being monitored by the rain sensor,
e.g. because the vehicle is under abridge
or in acarport.
Resetting !
If the sliding sunroof still cannot be
opened or closed fully after resetting, con-
tact aqualified specialist workshop.
Reset the sliding sunroof if it does not move
smoothly.
X Turn the key to position 1or 2in the ignition
lock.
X Raise the sliding sunroof fully at the rear
(Y page 92).
X Keep the 3switch pressed for another
second.
X Make sure that the sliding sunroof can be
fully opened and closed again (Y page 92).
X If this is not the case, repeat the steps
above again. 92
Sliding sunroofOpening and closing

settings with the memory function
(Y
page 107). Seats
Important safety notes
G
WARNING
The seats can still be adjusted when there is
no key in the ignition lock. For this reason,
children should never be left unsupervised in
the vehicle. They could adjust the seats and
become trapped. G
WARNING
Only adjust the driver's seat when the vehicle
is stationary. You will otherwise be distracted
from the road and traffic conditions and you
could lose control of the vehicle as aresult of
the seat moving. This could cause an acci-
dent. G
WARNING
If you adjust the seat height carelessly,y ou or
others could be trapped and thereby injured.
Children in particular could unintentionally
press the buttons to electrically adjust the
seats and become trapped.
Take care that:
R while moving the seats, your hands do not
get under the lever assembly of the seat
adjustment system.
R children in the vehicle do not slide their
hands under the levers. G
WARNING
Make sure that nobody can become trapped
when adjusting the seats.
Observe the notes on airbags.
Secure children as recommended; see the
"Children in the vehicle" section. G
WARNING
Make sure that the back of your head is sup-
ported at eye level by the central area of the head restraint. If your head is not supported
correctly by the head restraint, you could suf-
fer asevere neck injury in the event of an
accident. Never drive if the head restraints are
not engaged and set correctly. G
WARNING
As eat belt can only offer its intended degree
of protection when the backrest is almost ver-
tical and the occupant is sitting upright. Avoid
seat position sthat do not allow the seat belt
to be routed correctly. Adjust the backrest so
that it is as upright as possible. Never travel
with the backrest reclined too far backwards.
You could otherwise be seriously or even
fatally injured in the event of an acciden tor
sudden braking.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat cover sare damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat cover sasrecommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions ,e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation ,do
not cover the seats with insulating mate-
rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat cover sare damp or wet, do not
switch on the seat heating. The seat Seats
97Seats, steering wheel and mirrors Z

!
Make sure that the rear window roller
sunblind is retracted when removing the
rear head restraints. Otherwise, you could
damage the roller sunblind. X
To remove: pull the head restraint up as
far as it will go.
X Press release catch :and pull the head
restraint out of the guides.
X To refit: insert the head restraint so that
the notches on the bar are on the left when
viewed in the direction of travel.
X Push the head restraint down until you hear
it engage in position. Adjusting the multicontour seat
:
To adjust the thigh cushion
; To adjust the backrest contour in the lum-
bar region
= To adjust the backrest contour in the
upper back region
? To adjust the side bolsters of the seat
backrest You can adjust the contour of the front seats
individually so as to provide optimum support
for your back and sides.
X Make sure that the key is in position 2in
the ignition lock. Adjusting the active multicontour
seat
Overview :
To adjust the seat cushion length
; To switch the dynamic function on or off
= To adjust the side bolsters of the seat
backrest
? To switch the massage function on or off
A To adjust the contour of the backrest to
increase/decrease support
B To adjust the height/depth of the back-
rest contour
The active multicontour seat automatically
adapts the sides of the backrest to your cur-
rent driving style.
Dynamic function The dynamic function adjusts the air cushions
in the side bolsters of the seat backrests to
ensure ideall
ateral support at all times.100
SeatsSeats, steering wheela
nd mirrors