MERCEDES-BENZ CLS COUPE 2022 Manual Online


Press release knob 2 do wn fully and slide
cover 1 in the direction of the arrow. 
Fold out cover 1 in t
he direction of the arrow
and remove. 
Remove battery compartment 3 and t
ake
out the discharged battery. 
Insert the new battery into battery compart-
ment 3. Obser

ve the positive pole marking in
the battery compartment and on the battery
when doing this. 
Push in battery compartment 3.
Re-attach cover 1 and push it until it
eng
ages. Problems with the key, troubleshooting
You can no longer lock or unlock the vehicle
P
ossible causes:
= The key battery is weak or discharged. 
Check the battery using the indicator lamp
( pag

e 75). 
Replace the key battery, if necessary
( pag
e 77). 
Use the replacement key. 
Use the emergency key to lock or unlock
( pag

e 82). 
Have the key checked at a q
ualiNed specialist
workshop.
There is interference from a powerful radio signal
sour
ce
Possible causes if the function of the key is
impaired:
= high voltage power lines
= mobile phones
= electronic devices (notebooks, tablets) =
shielding due t
o metal objects or induction
loops for electrical gate systems or automatic
barriers 
Make sure that there is suPcient dis
tance
between the key and the potential source of
interference.
You have lost a key 
Have the key deactivated at a q
ualiNed spe-
cialist workshop. 
If necessary, have the mechanical lock
r
eplaced as well. Doors
Notes on the additional door lock
The additional door lock is only available for vehi-
cles f
or the United Kingdom. 78
Opening and closing

&
WARNING Risk of injur y to persons inside
the vehicle when the additional door lock
is activated
If the additional door lock is activated, the
door
s can no longer be opened from the
inside. 
Never leave persons, in particular chil-
dr

en, unattended in the vehicle. 
If there are persons in the vehicle, do not
activ
ate the additional door lock. The additional door lock is automatically activated
in t

he following situations:
= The vehicle is locked using the key.
= The vehicle is locked using KEYLESS-GO.
If the vehicle has been locked via Mercedes me
connect, the additional door lock is not activated
(  page 287).
If the additional door lock is activated, the doors
cannot be opened from the inside.
% Aser loc
king you can issue a signal with the
horn. You can prevent the additional door lock from
being activ
ated by deactivating interior protection
before locking the vehicle ( page 97). Unlocking/opening the doors from the inside

United Kingdom only: obser
ve the notes on
the additional door lock ( page 78). 
Pull the door 2 handle.
Loc
king pin 1 pops up when the door is
unlocked. Centrally locking and unlocking the vehicle from
t
he inside 
To unlock: pr
ess 1 button. 
To lock: pr
ess button 2. Opening and closing
79

This does not lock or unlock the fuel
Nller Oap.
The v ehicle is not unlocked:
= if you have locked the vehicle using the key
= if you have locked the vehicle using KEYLESS-
GO Locking/unlocking the vehicle with KEYLESS-GO
Requirements:
= The k

ey is outside the vehicle.
= The distance between the key and the vehicle
does not exceed 1 m.
= The driver's door and the door on which the
door handle is used are closed.
* NOTE Damag
e to the vehicle caused by
unintentionally opening the boot lid =
when using an aut
omatic car wash
= when using a high pressure cleaner 
Deactivate the function of the key in
t

hese situations.
or 
Make sure that the key is at a minimum
dis

tance of 3 m away from the vehicle. Observe the notes:
= on w

ashing the vehicle in a car wash
(  page 311)
= on using a high pressure cleaner
( page 312) 
To unlock the vehicle: t
ouch the inner surface
of the door handle. 
To lock the vehicle: t
ouch sensor surface 1
or 2. 
Convenience closing: t
ouch recessed sensor
surface 2 until the closing process has been
completed.
% Further information on convenience closing
(  pag

e 90).
If you open the boot lid from outside, the boot lid
is aut
omatically unlocked. Problems with KEYLESS-GO, troubleshooting
You can no longer lock or unlock the vehicle using
KEYLESS-GO
P

ossible causes:
= The function of the key has been deactivated.
= The key battery is weak or discharged. 
Activate the function of the key ( pag
e 76). 
Check the battery using the indicator lamp
( pag

e 75). 80
Opening and closing


Replace the key battery, if necessary
( pag e 77). 
Use the replacement key. 
Use the emergency key to lock or unlock
( pag

e 82). 
Have the vehicle and key checked at a quali-
Ned specialis

t workshop.
There is interference from a powerful radio signal
sour
ce
Possible causes if the function of KEYLESS-GO is
impaired:
= high voltage power lines
= mobile phones
= electronic devices (notebooks, tablets)
= shielding due to metal objects or induction
loops for electrical gate systems or automatic
barriers 
Make sure that there is suPcient dis
tance
between the key and the potential source of
interference. Activating/deactivating the automatic locking fea-
tur
e The vehicle is locked automatically when the vehi-
cle is switc

hed on and the wheels are turning
faster than walking pace. 
To activate: pr
ess and hold button 2 for
approximately Nve seconds until an acoustic
signal sounds. 
To deactivate: pr
ess and hold button 1 for
approximately Nve seconds until an acoustic
signal sounds.
In the following situations, there is a danger of
being loc
ked out when the function is activated:
= while the vehicle is being tow-started or
pushed
= if the vehicle is being tested on a roller dyna-
mometer Power closing function
&
WARNING Risk of becoming tr
apped when
the doors close automatically
Body parts or objects can become trapped,
causing injur
ies. 
Ensure that no body parts or objects are
in t
he closing area. 
Automatic closing of the doors can be
cancelled b

y pulling the outer or inner
door handle. Opening and closing
81

If you push the door into the lock to the
Nr st
detent position, the power closing function will
automatically pull the door into the lock. Locking/unlocking the driver's door with the
emer

gency key %
If you wish to lock the vehicle entirely using
t
he emergency key, Nrst press the button for
locking from the inside while the driver's door
is open. Then proceed to lock the driver's
door using the emergency key.
% If you unlock and open the driver's door with
t
he emergency key, this triggers the burglar
alarm system. 
Remove the emergency key (  pag
e 77). 
Insert the emergency key as far as it will go
int
o opening 1 in the cover. 
Pull and hold the door handle. 
Pull the cover on the emergency key as
s

traight as possible away from the vehicle until
it releases. 
Release the door handle. 
To unlock: tur
n the emergency key anti-clock-
wise to position 1. 
To lock: tur
n the emergency key clockwise to
position 1. 
Carefully press the cover onto the lock cylin-
der until it eng

ages and is seated Nrmly.82
Opening and closing

Boot
Opening the boot lid
&
DANGER Risk of e xhaust gas poisoning
Combustion engines emit poisonous exhaust
g
ases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when the engine is running, espe-
cially if the vehicle is in motion. 
Always switch oM t
he engine before
opening the boot lid. 
Never drive with the boot lid open. *
NOTE Damag
e to the boot lid by obstacles
above the vehicle The boot lid swings upwards when it is
opened.

Therefore, make sure that there is suP-
cient clear

ance above the boot lid. 
With the boot lid unlocked, press the top of
t

he Mercedes star. %
To open, pull on the folded-out Mercedes star
when t

he reversing camera is activated. 
Vehicles with HANDS-FREE ACCESS: mak
e a
kicking movement with your foot below the
bumper ( page 86).
Vehicles with boot lid convenience closing 
Pull remote operating switch 1 until t
he boot
lid opens. or 
Press and hold the

There is a risk of injury, particularly in the
e
vent of sudden braking or a sudden change
in direction. 
Always stow objects in such a way that
t

hey cannot be thrown around. 
Before the journey, secure objects, lug-
g

age or loads against slipping or tipping
over. Observe the notes on loading the vehicle.
Notes on closing the boot lid:
y
our vehicle is
equipped with automatic key recognition. If a key
belonging to the vehicle is detected in the vehicle,
the boot lid will not be locked and will pop open
again.
Note that the boot lid will not be locked if the fol-
lowing situation occurs:
= You have locked the vehicle and close the
boot lid while a key belonging to the vehicle is
inside the vehicle.
and
= A second key belonging to the vehicle is not
detected outside the vehicle. Automatic key recognition is only an aid and is not
a subs

titute for your attentiveness. 
Before locking, ensure that at least one key
belonging t

o the vehicle is outside the vehicle. 
To close the boot lid: pull t
he boot lid down-
wards using the handle recess and push it
closed.
Vehicles with boot lid convenience closing &
WARNING Risk of becoming tr
apped dur-
ing automatic closing of the boot lid
Parts of the body could become trapped.
Ther
e may be people in the closing area. 
Make sure that nothing is located within
t

he vicinity of the closing area. 
Use one of the following options to stop
t

he closing process:
= Press the


Push remote operating switch 1 until t he
boot lid is fully closed. 
Press closing button 1 on t he boot lid.
Vehicles with KEYLESS-GO 
Press locking button 2 on t
he boot lid.
If a key is detected outside the vehicle, the
boot lid will close and the vehicle will be
locked. 
With the boot lid completely open, press and
hold t

he

In these situations in particular, the reversing
function canno
t prevent someone being trap-
ped. 
Ensure that no body parts are in the
closing ar
ea. 
If someone is trapped, use one of the fol-
lo

wing options:
= Press the

When making the kicking movement, make sure
t
hat you are standing Nrmly on the ground. You
could otherwise lose your balance, e.g. on ice.
Observe the following notes: = The key is behind the vehicle.
= Stand at least 30 cm away from the vehicle
while performing the kicking movement.
= Do not come into contact with the bumper
while making the kicking movement.
= Do not carry out the kicking movement too
slowly.
= The kicking movement must be towards the
vehicle and back again. 1
Detection range of the sensors
If several consecutive kicking movements are not
successful, w
ait ten seconds.
System limits
The system may be impaired or may not function
in the following cases:
= The sensors are dirty, e.g. due to road salt or
snow.
= The kicking movement is made using a pros-
thetic leg. The boot lid could be opened or closed uninten-
tionall

y, in the following situations:
= A person's arms or legs are moving in the sen-
sor detection range, e.g. when polishing the
vehicle or picking up objects.
= Objects are moved or placed behind the vehi-
cle, e.g. the hose of a fuel dispenser, a charg-
ing cable or luggage
= Clamping straps, tarpaulins or other coverings
are pulled over the bumper.
= A protective mat with a length reaching over
the boot sill down into the detection range of
the sensors is used.
= The protective mat is not secured correctly.
= Work is being done on the trailer hitch, trailers
or rear bicycle racks.
Deactivate the function of the key (  page 76) or
do not carry the key about your person in such
situations. Opening and closing
87