2015 MERCEDES-BENZ A-CLASS HATCHBACK keyless

X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :or;.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
For further information on the convenience closing feature (Y page 95).X
To unlock the tailgate: pull tailgate han-
dle :.
Deactivating and activating If you do not intend to use the vehicle for an
extended period of time, you can deactivate
KEYLESS-GO. The key will then use very little power, thereby conserving battery power. For
the purposes of activation or deactivation,
the vehicle does not have to be nearby. X
To deactivate: press the&button on
the key twice in rapid succession.
The battery check lamp of the key flashes
twice briefly and lights up once, then KEY-
LESS-GO is deactivated (Y page 86).
X To activate: press any button on the key.
or
X Insert the key into the ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again. KEYLESS-GO start function
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a key
in the vehicle. Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for about six seconds until the bat-
tery indicator lamp flashes twice
(Y page 86).
If the setting of the locking system is changed
within the signal range of the vehicle, press-
ing the &or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock: press the%button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button. 84
KeyOpening and closing

The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice (Y page 86). Emergency key element
General notes If the vehicle can no longer be unlocked with
the key or KEYLESS-GO, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door or the tail-
gate, the anti-theft alarm system will be trig-
gered (Y page 78).
There are several ways to deactivate the
alarm:
X To deactivate the alarm 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 flap will not be
unlocked automatically. X
To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element X
Push release catch :in the direction of
the arrow and, at the same time, remove
emergency key element ;from the key.
Further information about:
R unlocking the driver's door (Y page 91)
R unlocking the luggage compartment
(Y page 93)
R locking the vehicle (Y page 92)
Inserting the emergency key element X
Push emergency key element ;com-
pletely into the key until it engages and
release catch :is back in its basic posi-
tion. Battery of the key
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. Key
85Opening and closing Z

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 discharged or nearly discharged.
X Vehicles without KEYLESS-GO or KEYLESS-GO start func-
tion: try again to lock/unlock the vehicle using the remote con-
trol function of the key. Point the tip of the key at the driver's
door handle from close range and press the %or& but-
ton.
If this does not work: X Check the key battery (Y page 86) and replace it if necessary
(Y page 86).
X Lock (Y page 91) or unlock (Y page 92) 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 func-
tion: try again to lock/unlock the vehicle using the remote con-
trol function of the key. Point the tip of the key at the driver's
door handle from close range and press the %or& but-
ton.
If this does not work: X Lock (Y page 91) or unlock (Y page 92) the vehicle using the
emergency key element. The key is faulty.
X Lock (Y page 91) or unlock (Y page 92) 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 discharged or nearly discharged.
X Check the key battery (Y page 86) and replace it if necessary
(Y page 86).
If this does not work: X Lock (Y page 91) or unlock (Y page 92) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Lock (Y page 91) or unlock (Y page 92) the vehicle using the
emergency key element. Key
87Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions There is a fault with KEYLESS-GO.
X Lock/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 can also not be locked/unlocked using the remote
control function:
X Lock (Y page 91) or unlock (Y page 92) 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 347).
or
X Jump-start the vehicle (Y page 348).
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 discharged or nearly discharged.
X Check the key battery (Y page 86) and replace it if necessary
(Y page 86).
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. 88
KeyOpening and closing

For all countries except the United King-
dom:
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks
(Y page 68).
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 78).
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get 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 out-
side, the double lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. You can deac-
tivate the double lock function by deactivat-
ing the interior motion sensor (Y page 80).
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 68). The anti-
theft alarm system is triggered if the door is
opened from the inside. Switch off the alarm
(Y page 78). 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 tailgate 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 King-
dom:
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 78).
You can open the rear doors from inside the
vehicle if they are not secured by the child-
proof locks (Y page 68).
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 cen-
tral locking or
R locked automatically
The vehicle will be fully unlocked if it had pre- viously been fully unlocked. Only the door
which has been opened from the inside is
unlocked if only the driver's door had been
previously 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 90
DoorsOpening and closing

vehicle. You can deactivate the double lock
function by deactivating the interior motion
sensor (Y page 80). 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 68). The anti-theft alarm system is
triggered if the door is opened from the
inside. Switch off the alarm (Y page 78).
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 cen-
tral locking or
R locked automatically
The vehicle will be fully unlocked if it had pre- viously been fully unlocked. Only the door
which has been opened from the inside is
unlocked if only the driver's door had been
previously unlocked. 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
turning.
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 dynamom-
eter
You can also activate and deactivate the auto- matic locking function using the on-board
computer (Y page 251). 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 element.
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 78).
X Take the emergency key element out of the
key (Y page 85).
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-
clockwise as far as it will go to position 1. Doors
91Opening and closing Z

On right-hand-drive vehicles, turn the
emergency 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 85). Locking the vehicle (emergency key
element)
If the vehicle can no longer be locked with the key or KEYLESS-GO, use the emergency key
element.
X Open the driver's door.
X Close the front-passenger door, the rear
doors and the tailgate.
X Press the locking button on the driver’s
door (Y page 90).
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 85).
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 clockwise
as far as it will go to position 1.On right-hand-drive vehicles, turn the
emergency key element anti-clockwise.
X Turn the emergency key element back and
remove it.
X Make sure that the doors and the tailgate
are locked.
X Insert the emergency key element into the
key (Y page 85).
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not primed. Luggage compartment
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open. G
WARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, especially when braking or abruptly changing directions.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and behind the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 404). 92
Luggage compartmentOpening and closing

Stow luggage or loads preferably in the lug-
gage compartment. Observe the loading
guidelines (Y page 306).
Do not leave the key in the luggage compart- ment. You could otherwise lock yourself out.
The tailgate can be:
R opened and closed manually from outside
R emergency release activated from the
inside Opening/closing from the outside
Opening X
Press the %button on the key.
X Pull handle :.
X Raise the tailgate.
Closing X
Pull the tailgate down using handle :.
X Let the tailgate to drop into the lock.
X If necessary, lock the vehicle with the &
button on the key or with KEYLESS-GO. Tailgate emergency release
General notes !
The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and behind the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 404).
If the tailgate 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 tailgate.
You can reach the emergency release via the
luggage compartment.
Opening X
Fold rear seat backrest forwards
(Y page 310).
X Take the emergency key element out of the
key (Y page 85).
X Insert emergency key element ;into
opening :in the trim and push it in.
X Open the tailgate.
X Insert the emergency key element into the
key (Y page 85). Luggage compartment
93Opening and closing Z