2012 MERCEDES-BENZ CLS COUPE keyless

Key functions
:
& To loc kthe vehicle
; F To unlock the boot lid
= % To unlock the vehicle
X To unlock centrally: press the%but-
ton.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the anti-theft system is primed again.
X To lock centrally: press the&button.
The key centrally locks/unlocks:
R the doors
R the boot lid
R the fuel filler flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (Y page 225).
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page 223). KEYLESS-GO
General notes Bear in mind that the engine can be started
by any of the vehicle occupants if there is a
KEYLESS-GO key in the vehicle. Locking and unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the key with you. When you touch the surface
of the sensors on the vehicle's outside door
handles, KEYLESS-GO establishes
aradio
connection between the vehicle and the key.
When the engine is started and whilst you are
driving, KEYLESS-GO also checksw hether a
valid key is in the vehicle by periodically
establishing radio contact.
You can combine the KEYLESS-GO functions
with those of aconventional key, e.g. using
KEYLESS-GO to unlock and pressing the
& button to lock.
When locking or unlocking with KEYLESS-GO,
the distance between the key and the corre-
sponding door handle must not be greater
than 1m. X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
X To unlock the boot lid: pull the handle on
the boot lid.
Further information on the convenience clos-
ing feature (Y page 89). Key
77Opening and closing Z

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

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

United Kingdom only:
if the vehicle has
been locked with the key or with KEYLESS-
GO, the double lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. Deactivate the
interior motion senso r(Ypage 72) before you
lock the vehicle. 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. Switc hoff the alarm
(Y page 71).
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof lock s(Ypage 62). X
Pull door handle ;.
If the door is locked, locking knob :pops
up. The door is unlocked and can be
opened. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. X
To unlock: press button :.
X To lock: press button ;.
If all the doors are closed, the vehicle locks.
You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked with
the key or KEYLESS-GO.
The central locking/unlocking button does
not lock or unlock the fuel filler flap.
For all countries except the United King-
dom: you can open afron tdoor from inside
the vehicle even if it has been locked.
United Kingdom only: if the vehicle has
been locked with the key or with KEYLESS-
GO, the double lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. Deactivate the
interior motion senso r(Ypage 72) before you
lock the vehicle. The doors can then be
opened from the inside after the vehicle has
been locked from the outside.
If the vehicle has been locked using the lock-
ing button for the central locking, or has been
locked automatically, and adoor is opened
from the inside:
R the vehicle will be fully unlocked if it had
previously been fully unlocked.
R only the door which has been opened from
the inside is unlocked if only the driver's
door had been previously unlocked. Doors
83Opening and closing Z

X
Pull the boot lid down using recess :.
X If necessary, lock the vehicle with
the & button on the key (Y page 77) or
with KEYLESS-GO (Y page 77).
i IfaK EYLESS-GO key is detected in the
boot, the boot lid cannot be locked. It then
opens again. Opening/closing automatically from
the outside
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
Monito rthe boot lid opening and closing pro-
cedures to make sure that nobody can
become trapped. To stop the opening or clos-
ing procedure, press the closing button on the
boot lid again or pull the handle on the outside
of the boot lid.
! The boot lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the boot lid.
i Opening dimensions of the boot lid
(Y page 366).
To open You can open the boot lid automatically using
the key or the handle in the boot lid.
X
Press and hold the Fbutton on the key
until the boot lid opens.
or
X If the boot is unlocked, pull the boot lid
handle and release it again immediately
(Y page 85).
To close Example: closing and locking button (vehicle with
the boot lid remote closing feature and KEYLESS-
GO)
:
Closing button
; Lockingb utton
X To close: press closing button :on the
boot lid. 86
BootOpening and closing

Vehicles with the boot li
dremot eclosing
featur eand KEYLESS-GO: you can simulta-
neously clos eand lock th eboot lid.
X Pres slocking button ;on th eboot lid.
i If you leave aKEYLESS-GO key in the
boot ,the boot lid will not lock. Opening/closing automatically from
th ei nside
Important safety notes G
WARNING
Monito rthe boot lid closing procedure to
make sure that nobody can become trapped.
Release the boot lid remote operating button
to stop the closing procedure.
i Opening dimensions of the boot lid
(Y page 366).
Opening and closing X
To open: pull remote operating switch for
boot lid :until the boot lid opens.
X To close: press remote operating switch
for boot lid :until the boot lid is closed.
You can open the boot lid from the driver's
seat when the vehicle is stationary and
unlocked. Unlocking the boot (emergency key
element)
! The boot lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the boot lid.
If the boot cannot be unlocked with the key
or KEYLESS-GO, use the emergency key ele-
ment.
If you use the emergency key element to
unlock and open the boot lid, the anti-theft
alarm system will be triggered (Y page 71).
X Take the emergency key element out of the
key (Y page 78).
X Insert the emergency key element into the
boot lid lock as far as the stop. 1
Neutral position
2 To unlock
X Turn the emergency key element anti-
clockwise from position 1as far as it will
go to position 2.
The boot is unlocked.
X Turn the emergency key element back to
position 1and remove it.
X Insert the emergency key element into the
key. Side windows
Important safety notes
G
WARNING
Make sure that nobody can become trapped
between the side window and the door frame Side windows
87Opening and closing
Z

Convenience opening feature
General notes You can ventilate th
evehicle before you start
driving .Todot his, the key is used to carry out
the following functions simultaneously:
R unlock the vehicle
R open the side windows
R open the sliding sunroof
R switch on the seat ventilation for the driv-
er's seat
i The convenienc eopening feature can
only be operated using the key. The key
must be close to the driver's door handle.
Convenience opening feature X
Point the tip of the key at the driver's door
handle.
X Press and hold the %button until the
side windows and the sliding sunroof are in
the desired position.
X To interrupt convenience opening:
release the %button. Convenience closin
gfeature
Important safety notes G
WARNING
When using the convenienc eclosing feature,
make sure that nobody can become trapped.
Proceed as follows if there is arisk of entrap-
ment:
With the key:
R release the &button.
R press and hold the %button until the
side windows and the sliding sunroof open
again. With KEYLESS-GO:
R
release the sensor surface on the door han-
dle.
R pull the door handle immediately and hold
it.
The side windows and the sliding sunroof
open.
When you lock the vehicle, you can simulta-
neously:
R close the side windows
R close the sliding sunroof
Using the key The key must be close to the driver's door
handle.
X
Point the tip of the key at the driver's door
handle.
X Press and hold the &button until the
side windows and the sliding sunroof are
fully closed.
X Make sure that all the side windows and the
sliding sunroof are closed.
X To interrupt convenience closing:
release the &button.
Using KEYLESS-GO The KEYLESS-GO key must be outside the
vehicle. All the doors must be closed. Side windows
89Opening and closing Z