2016 MERCEDES-BENZ CLA COUPE keyless

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You cannot lock or
unlock the vehicle using
the key. The key battery is weak or discharged.
X Vehicles without KEYLESS-GO or KEYLESS-GO start function:
try again to lock/unlock the vehicle using the remote control func- tion 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 if necessary
(Y page 79).
X Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Vehicles without KEYLESS-GO or KEYLESS-GO start function:
try again to lock/unlock the vehicle using the remote control func-
tion 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 Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element. The key is faulty.
X Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. The key battery is weak or discharged.
X Check the key battery (Y page 79) and replace if necessary
(Y page 79).
If this does not work: X Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element. Key
81Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions There is a fault with KEYLESS-GO.
X Lock or unlock the vehicle using the remote control function of the
key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle cannot be locked or unlocked even using the remote
control function:
X Unlock (Y page 85) or lock (Y page 85) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. 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 301).
or X Jump-start the vehicle (Y page 301).
or X Consult a qualified 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 weak or discharged.
X Check the key battery (Y page 79) and replace if necessary
(Y page 79).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost a key. X
Have the key deactivated at a qualified 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. 82
KeyOpening and closing

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 (Y page 75). The doors can then
be opened from the inside after the vehicle has been locked from the outside. You can open the
rear doors from inside the vehicle if they are not secured by the child-proof locks (Y page 65).
The anti-theft alarm system is triggered if the
door is opened from the inside. Switch off the
alarm (Y page 73). Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle from
the inside. This can be useful if you wish to lock the vehicle before pulling away, for example. X
To unlock: press button :.
X To lock: press button ;.
If all the doors and the boot lid are closed, the
vehicle locks.
This does not lock or unlock the fuel filler flap.
You cannot unlock the vehicle centrally from the
inside if the vehicle has been locked with the key or KEYLESS-GO.
For all countries except the United Kingdom: You can open a door from inside the vehicle
even if it has been locked.
If the vehicle has previously been locked with
the key from the outside, opening a door from
the inside will trigger the anti-theft alarm sys-
tem. Switch off the alarm (Y page 73).
You can open the rear doors from inside the
vehicle if they are not secured by the child-proof locks (Y page 65).
When a locked door is opened from inside the
vehicle, the previous unlocking process will be
observed if the vehicle has been:
R locked with the locking button for the central
locking or
R locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. Only the door that has been opened from the inside is unlocked if only
the driver's door had previously been unlocked.
Only for the United Kingdom: if the vehicle
has been locked with the key, the double lock
function is activated as standard. It is then not
possible to open the doors from inside the vehi- cle. You can deactivate the double lock function
by deactivating the interior motion sensor
(Y page 75). The doors can then be opened from
the inside after the vehicle has been locked from
the outside. You can open the rear doors from
inside the vehicle if they are not secured by the child-proof locks (Y page 65). The anti-theft
alarm system is triggered if the door is opened
from the inside. Switch off the alarm
(Y page 73).
When a locked door is opened from inside the
vehicle, the previous unlocking process will be
observed if the vehicle has been:
R locked with the locking button for the central
locking or
R locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. Only the door that has been opened from the inside is unlocked if only
the driver's door had previously been unlocked. 84
DoorsOpening and closing

Automatic locking feature
X
To deactivate: press and hold button :for
approximately five seconds until a tone
sounds.
X To activate: press and hold button ;for
approximately five seconds until a tone
sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
You could therefore be locked out if:
R the vehicle is being pushed
R the vehicle is being towed
R the vehicle is being tested on a dynamometer
You can also activate and deactivate the auto-
matic locking function using the on-board com- puter (Y page 211). Unlocking the driver's door (emer-
gency key element)
If the vehicle can no longer 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 driver's door, the anti-theft alarm
system will be triggered (Y page 73).
X Take the emergency key element out of the
key (Y page 78).
X Insert the emergency key element into the
lock of the driver's door as far as it will go. X
Turn the emergency key element anti-clock-
wise as far as it will go to position 1.
On right-hand-drive vehicles, turn the emer-
gency key element clockwise.
The door is unlocked.
X Turn the emergency key element back and
remove it.
X Insert the emergency key element into the
key (Y page 79). Locking the vehicle (emergency key
element)
If the vehicle can no longer be locked with the
key or KEYLESS-GO, use the emergency key ele-
ment.
X Open the driver's door.
X Close the front-passenger door, the rear
doors and the boot lid.
X Press the locking button on the driver’s door
(Y page 84).
X Check whether the locking knobs on the
front-passenger door and the rear doors are
still visible. Press the locking knobs down by
hand if necessary.
X Close the driver's door.
X Take the emergency key element out of the
key (Y page 78).
X Insert the emergency key element into the
lock of the driver's door as far as it will go. Doors
85Opening and closing Z

Closing
X
Pull down the boot lid using handle :.
X Let the boot lid drop into the lock.
X If necessary, lock the vehicle with the &
button on the key or with KEYLESS-GO. Opening automatically from outside
General notes !
The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
i The opening dimensions of the boot lid can
be found under "Vehicle data" (Y page 333).
Opening automatically 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 lid is unlocked, pull the boot lid
handle and release it again immediately. HANDS-FREE ACCESS
Important safety notes G
WARNING
The vehicle exhaust system can become very
hot. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. There is a risk of injury. Always ensure that you only make a leg movement
within the detection range of sensors.
! If the key is within the rear detection range
of KEYLESS-GO, the following situations, for
example, could lead to the boot lid opening
unintentionally:
R using a car wash
R using a high-pressure cleaner
Make sure that the key is at least 3 m away
from the vehicle.
i You can also deactivate KEYLESS-GO. Fur-
ther information on deactivating and activat-
ing KEYLESS-GO (Y page 77).
General notes With KEYLESS-GO and HANDS-FREE ACCESS,
you can open the boot lid without using your
hands. This is useful if you have your hands full.
To do this, make a kicking movement under the bumper with your foot.
Observe the following points:
R Carry your KEYLESS-GO key with you. The key
must be in the KEYLESS-GO detection range
to the rear of the vehicle.
R When making the kicking movement, make
sure that you are standing firmly on the
ground and that there is sufficient clearance
to the rear of the vehicle. You could otherwise
lose your balance, e.g. on ice. R
Always ensure that you only make a kicking
movement within the detection range of sen-
sors :.
R Stand at least 30 cm away from the rear area
while doing so.
R Do not come into contact with the bumper
while making the kicking movement. Other-
wise, the sensors may not function correctly. Boot
87Opening and closing Z

R
HANDS-FREE ACCESS does not function dur-
ing engine start.
R Dirt caused by road salt around sensors :
may restrict functionality.
Using HANDS-FREE ACCESS with a pros-
thetic leg may restrict functionality.
R If a KEYLESS-GO key is in the KEYLESS-GO
detection range to the rear of the vehicle,
HANDS-FREE ACCESS could be triggered.
The boot lid could thus be opened uninten-
tionally, for example, when you:
- fold the ball coupling in or out
- couple or uncouple a trailer
- fit or remove a rear-mounted bicycle rack
- load/unload bicycles on/from a rear-
mounted bicycle rack
- set down or lift up an object behind the
vehicle
- polish the rear of the vehicle
Do not carry the KEYLESS-GO key with you in
such situations. This will prevent the uninten- tional opening of the boot lid.
Operation X
To open: kick into sensor detection range :
below the bumper with your foot.
X If the boot lid does not open after several
attempts: wait at least ten seconds then kick
under the bumper once again.
If you hold your foot under the bumper for too
long, the boot lid does not open. Repeat the
kicking movement more quickly if this occurs. Opening automatically from inside
General notes !
The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
The opening dimensions of the boot lid can be
found under "Vehicle data" (Y page 333).
Opening You can open the boot lid from the driver's seat
when the vehicle is stationary and unlocked. X
To open: pull remote operating switch :for
the boot lid until the boot lid opens. Boot emergency release
General notes !
The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
The opening dimensions of the boot lid can be
found in the "Vehicle data" section
(Y page 333).
If the boot lid can no longer be unlocked:
R using the key, or
R using the remote operating switch in the door
control panel:
Use the emergency release on the inside of the boot lid.
You can reach the emergency release via the
boot. 88
BootOpening and closing

:
Front left
; Front right
= Rear right
? Rear left
X Turn the key to position 1or 2in the ignition
lock (Y page 133).
X To open manually: press and hold the cor-
responding button.
X To open fully: press the button beyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pull the corresponding
button and hold it.
X To close fully: pull the button beyond the
point of resistance and release it.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the corresponding switch again.
i If you press/pull the switch beyond the
point of resistance, automatic operation is
started in the corresponding direction. You
can stop automatic operation by pressing/
pulling again.
i You can continue to operate the side win-
dows after switching off the engine or remov-
ing 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 65).Convenience opening feature
Vehicles with KEYLESS-GO, the KEYLESS-
GO start function, Exclusive package or
AMG Exclusive package: you can ventilate the
vehicle before you start driving. The key can also be used to carry out the fol-
lowing functions simultaneously:
R
unlock the vehicle
R open the side windows
R open the panorama sliding sunroof and the
roller sunblind
The convenience opening feature can only be
operated using the key.
The "Convenience opening" feature is also avail-
able when the vehicle is unlocked.
X Vehicles with Exclusive package or AMG
Exclusive package but without KEYLESS-
GO and the KEYLESS-GO start function: for
the following operations, point the tip of the
key at the door handle on the driver's door.
The key must be close to the driver's door
handle.
i Vehicles with KEYLESS-GO or the KEY-
LESS-GO start function: the key must be in
close proximity to the vehicle.
X Press and hold the %button until the side
windows and the panorama sunroof are in the
desired position.
If the roller sunblind of the panorama sliding
sunroof is closed, the roller sunblind is
opened first.
X Press and hold the %button once more
until the panorama sliding sunroof reaches
the desired position.
X To interrupt convenience opening: release
the % button. Convenience closing feature
Important safety notes G
WARNING
When the convenience closing feature is oper- ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. When closing make sure that no parts of the body are in the closing area. 90
Side windowsOpening and closing

Vehicles with KEYLESS-GO, the KEYLESS-
GO start function, Exclusive package or
AMG Exclusive package: at the same time you
can:
R lock the vehicle
R close the side windows
R close the panorama sliding sunroof
On vehicles with a panorama sliding sunroof,
you can then close the roller sunblind.
i Notes on the automatic reversing function
for:
R the side windows (Y page 89)
R the panorama sliding sunroof
(Y page 93)
R the roller sunblind (Y page 94)
Using the key X
Vehicles with Exclusive package or AMG
Exclusive package but without KEYLESS-
GO and the KEYLESS-GO start function: for
the following operations, point the tip of the
key at the door handle on the driver's door.
The key must be close to the driver's door
handle.
i Vehicles with KEYLESS-GO or the KEY-
LESS-GO start function: the key must be in
close proximity to the vehicle.
X Press and hold the &button until the side
windows and the panorama sliding sunroof
are fully closed.
X Make sure that all the side windows and the
panorama sliding sunroof are closed.
On vehicles with a panorama sliding sunroof: X Press and hold the &button again until the
roller sunblind of the panorama sliding sun-
roof closes.
X To interrupt convenience closing: release
the & button.
Using KEYLESS-GO The driver's door and the door at which the han-
dle is used must both be closed. The key must beoutside the vehicle. The gap between the key
and the corresponding door handle should not
be greater than 1 m. X
Touch recessed sensor surface :on the
door handle until the side windows and the
panorama sliding sunroof are fully closed.
i Make sure you touch only recessed sensor
surface :.
X Make sure that all the side windows are
closed.
X Make sure that all the side windows and the
panorama sliding sunroof are closed.
On vehicles with a panorama sliding sunroof: X Touch recessed sensor surface :on the
door handle again until the roller sunblind of
the panorama sliding sunroof closes.
X To interrupt convenience closing: release
recessed sensor surface :on the door han-
dle. Resetting the side windows
If a side 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 (Y page 133).
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed (Y page 89).
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 window is completely closed (Y page 89).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released, the Side windows
91Opening and closing Z