2012 MERCEDES-BENZ CLS COUPE key battery

ASSYS
TPLUS
Displaying aservice message ........300
Hiding aservice message ..............300
Notes ............................................. 300
Resetting the service interva ldis-
pla y................................................ 300
Service message ............................ 300
Specia lservice requirements ......... 301
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................71
Function .......................................... .71
Interior motion sensor .....................72
Switching off the alarm ....................71
Tow-awa yprotectio n........................ 71
ATTENTIO NASSIST
Activating/deactivating .................220
Display message ............................ 243
Function/notes ............................. 192
Authorised workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 239
see Lights
Automatic engine start (ECO start/
stop function) .................................... 146
Automatic engine switch-off (ECO
start/stop function) ..........................145
Automatic headlamp mode ..............111
Automatic transmission Accelerator pedal position .............151
Automatic drive program ...............152
Changing gea r............................... 151
DIRECT SELECT leve r..................... 149
Display message ............................ 254
Drive position (ECO start/stop
function) ........................................ 150
Drive program displa y.................... 149
Driving tips .................................... 151
Emergency running mode ..............156
Engaging drive position .................. 150
Engaging neutra l............................ 150
Engaging revers egear ................... 150
Engaging the par kposition ............ 149
Kickdow n....................................... 151
Manual drive program ....................154
Neutral (ECO start/stop function) .150
Overview ........................................ 148
Problem (fault) ............................... 156Progra
mselector button ................151
Pulling away ................................... 143
Selector leve r................................ 148
Shift range s................................... 153
Starting the engine ........................143
Steering wheel gearshift paddle s... 152
Transmission position displa y........ 149
Transmission position display
(DIREC TSELECT lever) ................... 149
Transmission positions ..................150
Automatic transmission emer-
gency runnin gmode ......................... 156
Auxiliary heating Activating/deactivating .................133
Activating/deactivating (on the
centre console ).............................. 133
Display message ............................ 255
Important safety notes ..................132
Problem (display message) ............136
Remote control .............................. 133
Setting ........................................... 225
Setting the departur etime ............ .135
Auxiliary ventilation
Activating/deactivating .................133
Activating/deactivating (on the
centre console ).............................. 133
Problem (display message) ............136
Remote control .............................. 133 B
Bag hook ............................................ 277
BAS (Brake Assist System) .................63
BAS PLU S(Brake Assist System
PLUS) .................................................... 64
Battery (key) Checking .......................................... 79
Important safety notes ....................79
Replacing ......................................... 79
Battery (vehicle)
Charging ........................................ 318
Display message ............................ 242
Important safety notes ..................316
Jump starting ................................. 319
Belt
see Seat belt
Belt force limiters (activation) ...........41 Index
5

Heating
see Climate control
High-pressure cleaners ....................302
Hill start assist .................................. 144
HOLD function Display message ............................ 245
Function/notes ............................. 179I
Ignitio nlock
see Key positions
Immobiliser .......................................... 70
In-car hotspot see Separate operating instructions
Indicator and warning lamps
Coolant .......................................... 267
DISTRONI CPLUS ........................... 269
Engine diagnostics .........................266
Fuel tank ........................................ 267
SPORT handling mode ...................264
Indicator lamps
Display message ............................ 238
see Warning and indicator lamps
Insectp rotection on the radiator ....297
Inspection see ASSYST PLUS
Instrument cluster
Overview .................................. 30, 209
Settings ......................................... 221
Warning and indicator
lamps ...................................... .32, 258
Instrument cluster lighting ..............222
Intelligen tLight System
Activating/deactivatin g................. 222
Display message ............................ 239
Overview ........................................ 115
Setting the dipped-bea mhead-
lamps for driving on the right/left .223
Interior lighting ................................. 118
Automatic control system ..............118
Delayeds witch-off (on-board
computer) ...................................... 224
Emergency lighting ........................119
Manual control ............................... 119
Overview ........................................ 118
Reading lamp ................................. 118Setting brightness for display/
switches (on-board computer)
.......222
Setting the ambient lighting
brightness (on-board computer) ....223
Setting the ambient lighting col-
our (on-board computer) ................ 223
Interior motio nsensor ........................ 72
ISOFIXc hild seat securing system ....56 J
Jack Storage location ............................ 311
Using ............................................. 338
Jump start (engine)
see Jump starting (engine)
Jump starting (engine) ......................319 K
Key Changing the battery .......................79
Checking the battery .......................79
Convenience closing feature ............89
Convenience opening feature ..........89
Display message ............................ 256
Door central locking/unlocking .......77
Emergency key element ................... 78
Important safety notes ....................76
Loss ................................................. 81
Modifying the programming .............78
Positions (ignition lock) .................141
Problem (malfunction) .....................81
Starting the engine ........................143
KEYLESS-GO
Convenience closing ........................89
Display message ............................ 257
Locking ............................................ 77
Start/Stop button .......................... 141
Starting the engine ........................143
Unlocking ......................................... 77
Keyp ositions
Key ................................................ 141
KEYLESS GO .................................. 141
Kickdown
Driving tips .................................... 151
Manual drive program ....................154
Kneebag ............................................... 4412
Index

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

X
Push release catch :in the direction of
the arrow and at the same time, remove
emergenc ykey element ;from the key. Battery of the key
Important safety notes G
WARNING
Batteries are toxic and contain caustic sub-
stances. For this reason, keep batteries out of
the reach of children.
If ab attery has been swallowed, visit adoctor
immediately. H
Environmenta
lnote Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system.
Dispose of batteries in an
environmentally responsible
manner
.Take discharged
batteries to aqualified spe-
cialis tworkshop or to acol-
lection point for used batter-
ies.
Mercedes-Benz recommends that you have
the batteries replaced at aqualified specialist
workshop. Checking the battery X
Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
X Change the battery (Y page 79).
i If the key battery is checked within the
signal reception range of the vehicle, press-
ing the &or% button:
R locks or
R unlocks the vehicle
i You can get abattery in any qualified spe-
cialist workshop.
Replacing the battery You require
aCR20253Vc ell battery.
X Take the emergenc ykey element out of the
key (Y page 78). :
Battery compartment cover
; Emergency key element Key
79Opening and closing Z

X
Press emergenc ykey element ;into the
opening in the key in the direction of the
arrow until batter ycompartment cover :
opens. When doing so, do not hold battery
compartment cover :shut.
X Remove batter ycompartment cover :.=
Battery
X Repeatedly tap the key against your palm
until battery =falls out.
X Inser tthe new battery with the positive ter-
minal facing upwards. Use alint-free cloth
to do so.
X Make sure that the surface of the battery is
free from lint, grease and all other forms of
contamination.
X Insert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
X Insert emergency key element ;into the
key (Y page 78).
X Check the function of all key buttons on the
vehicle. 80
KeyOpening and closing

Problems with the key
Problem Possible causes/consequences and
M Solutions
You cannot lock or
unlock the vehicle
using the key. The key battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the key. Point the tip of the key at the driver's door
handle from close range and press the %or& button.
If this does not work:
X Check the key battery (Y page 79) and replace it if necessary
(Y page 79).
X Lock (Y page 84) or unlock (Y page 84) the vehicle using
the emergency key element. The key is faulty.
X
Lock (Y page 84) or unlock (Y page 84) the vehicle using
the emergency key element.
X Have the key checked at aqualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. There is interference from
apowerful source of radio waves.
X Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the %or& button. There is
afault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the %or& button.
X Have KEYLESS-GO checked at aqualified specialist workshop.
If this does not work:
X Check the key battery (Y page 79) and replace it if necessary
(Y page 79).
X Lock (Y page 84) or unlock (Y page 84) the vehicle using
the emergency key element. 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. Key
81Opening and closing Z

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

The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level 3to level 2after approximately
eight minutes.
The system automatically switches down
from level 2to level 1after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
X Make sure that the key is in position 1or
2 in the ignition lock.
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating The seat heating has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switc hoff electrical consumers that you do
not need, such as the rear window heating
or interior lighting. Switching the seat ventilation on/off
Switching on/off The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
X
Make sure that the key is in position 1or
2 in the ignition lock.
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 89). The seat ven-
tilation of the driver's seat automatically
switches to the highest level.
Problems with the seat ventilation The seat ventilation has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X
Switc hoff electrical consumers that you do
not need, such as the rear window heating
or interior lighting. Steering wheel
Important safety notes
G
WARNING
Do not adjust the steerin gwheel while driving.
Adjusting the steerin gwheel while driving, or
driving without the steerin gwheel adjustment
feature locked could cause the driver to lose
control of the vehicle.
The electrical steerin gwheel adjustmen tfea-
ture can be operated at any time. Therefore,
do not leave children unattended in the vehi-
cle, or with access to an unlocked vehicle. A
child's unsupervised access to avehicle could
result in an acciden tand/o rserious personal
injury. 102
Steering wheelSeats, steering wheel and mirrors