2015 MERCEDES-BENZ A-CLASS HATCHBACK buttons

Activating/deactivating (on the
centre console) .............................. 149
Remote contro l.............................. 149
Axle load, permissible (trailer tow-
ing) ...................................................... 406 B
Bag hook ............................................ 311
Ball coupling
Folding in ....................................... 233
Folding out ..................................... 232
BAS (Brake Assist System) ................. 70
Battery (key)
Checking .......................................... 86
Important safety notes .................... 85
Replacing ......................................... 86
Battery (vehicle)
Charging ........................................ 347
Display message ............................ 276
Important safety notes .................. 344
Jump starting ................................. 348
Belt
see Seat belts
Belt tensioner
Activation ......................................... 55
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 249
Display message ............................ 279
Notes/function .............................. 226
Trailer towing ................................. 228
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 322
Closing ........................................... 324
Display message ............................ 288
Important safety notes .................. 322
Opening ......................................... 323
Boot lid
see Tailgate
Boot load (maximum) ........................ 404
Brake
EBD .................................................. 77
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 265 Notes ............................................. 402
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 73
Changing bulb s.............................. 128
Display message ............................ 272
Brakes
ABS .................................................. 69
Adaptive Brake Assist ...................... 72
BAS .................................................. 70
Brake fluid (notes) ......................... 402
Display message ............................ 258
Driving tips .................................... 189
Hill start assist ............................... 161
HOLD function ............................... 204
Important safety notes .................. 189
Parking brake ................................ 185
Warning lamp ................................. 294
Breakdown
Where will I find...? ........................ 338
see Flat tyre
see Tow-starting
see Towing away
Brightness control (instrument
cluster lighting) ................................... 30
Buttons on the steering column ...... 239 C
Calling up a fault see Display messages
Car
see Vehicle
Car wash (care) ................................. 329
Care
Automatic car wash ....................... 329
Carpets .......................................... 335
Display ........................................... 334
Exhaust pipe .................................. 333
Exterior lighting ............................. 332
Gear or selector lever .................... 334
High-pressure cleaner .................... 330
Interior ........................................... 334
Matt paintwork .............................. 331
Note s............................................. 329
Paint .............................................. 330 6
Index

Selecting ........................................ 195
Storing the current speed .............. 195
Variabl e......................................... 195
SPEEDTRONIC (variable)
Storing the current speed and
calling up the last stored speed ..... 195
SPORT handling mode
Deactivating/activating
(Mercedes-AMG vehicles) ................ 75
Warning lamp ................................. 298
Start-off assist
Activating ....................................... 206
Important safety notes .................. 206
Start/Stop button
Removing ....................................... 159
Starting the engine ........................ 160
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 159
STEER CONTROL .................................. 77
Steering
Display message ............................ 290
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (manually) ...................... 112
Button overview ............................... 32
Buttons (on-board computer) ......... 239
Cleaning ......................................... 334
Gearshift paddle s........................... 177
Important safety notes .................. 112
Steering wheel gearshift paddles .... 177
Stopwatch (RACETIMER) ................... 254
Stowage compartment
Map pockets .................................. 309
Stowage compartments
Armrest (front) ............................... 308
Armrest (under) ............................. 308
Centre console .............................. 307
Centre console (rear) ..................... 309
Cup holde r..................................... 313
Glove compartment ....................... 307
Important safety information ......... 307
Spectacles compartment ............... 307
Under driver's seat/front-
passenger sea t.............................. 308 Stowage net
....................................... 309
Stowage space
Stowage net ................................... 309
Summer tyres .................................... 360
Sun visor ............................................ 315
Suspension
Adaptive Damping System ............. 208
Suspension settings
AMG RIDE CONTROL sports sus-
pension .......................................... 207 T
Tail lamps see Lights
Tailgate
Display message ............................ 288
Emergency unlocking ....................... 93
Important safety notes .................... 92
Opening dimensions ...................... 404
Opening/closing (from outside) ....... 93
Tank
see Fuel tank
Technical data
Capacities ...................................... 396
Emergency spare wheel ................. 392
Information .................................... 394
Trailer load s................................... 406
Tyres/wheels ................................. 372
Vehicle data ................................... 404
Telephone
Accepting a call (multifunction
steering wheel) .............................. 247
Display message ............................ 290
Introduction ................................... 246
Menu (on-board computer) ............ 246
Number from the phone book ........ 247
Redialling ....................................... 247
Rejecting/ending a call ................. 247
Telephone compartment ................ 308
Temperature
Coolant .......................................... 239
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 254
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 254
Outside temperature ...................... 239
Setting (climate control )................ 142 18
Index

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

H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Mercedes-Benz recommends that you have
the battery replaced at a qualified 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 Replace the battery (Y page 86).
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 obtain a battery from any quali-
fied specialist workshop. Replacing the battery You require a CR 2025 3 V cell battery.
X Take the emergency key element out of the
key (Y page 85). X
Press emergency key element ;into the
opening in the key in the direction of the
arrow until battery tray cover :opens.
When doing so, do not hold cover :shut.
X Remove battery tray cover :. X
Repeatedly tap the key against your palm
until battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contamina-
tion.
X Insert the front tabs of battery tray cover :
and then press to close it.
X Insert emergency key element into the key
(Y page 85).
X Check the function of all key buttons on the
vehicle. 86
KeyOpening 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

The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed across your hips in the pelvic
area
X Before starting off, adjust the rear-view mir-
ror and the exterior mirrors (Y page 113)
so that you have a good view of road and
traffic conditions.
X Vehicles with a memory function: save
the seat and exterior mirror settings
(Y page 116). Seats
Important safety notes
G
WARNING
If children adjust the seats, they could
become trapped, especially if they are unat-
tended. There is a risk of injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
The seats can still be adjusted when there is
no key in the ignition lock. G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail of the seat, for instance. There is a risk of
injury.
Make sure that no one has any part of their
body within the sweep of the seat when
adjusting it.
Observe the safety notes on "Airbags"
(Y page 46) and "Children in the Vehicle"
(Y page 57). G
WARNING
If the driver's seat is not correctly engaged, it could unexpectedly move while driving. This could cause you to lose control of the vehicle.
There is a risk of an accident.
Always ensure that the driver's seat is
engaged before starting the vehicle. G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools. Seats
107Seats, steering wheel and mirrors Z

Control panel for THERMOTRONIC automatic climate control (2-zone)
:
To set the temperature, left (Y page 142)
; To set climate control to automatic mode (Y page 142)
= To demist the windscreen (Y page 144)
? To increase the airflow (Y page 143)
A To set the air distribution (Y page 143)
B Display
C To activate/deactivate air-recirculation mode (Y page 146)
D To switch climate control on/off (Y page 140)
E To set the temperature, right (Y page 142)
F To activate/deactivate the residual heat function (Y page 147)
G To activate/deactivate cooling with air dehumidification (Y page 141)
H To reduce the airflow (Y page 143)
I To switch the rear window heating on/off (Y page 145)
J To switch the ZONE function on/off (Y page 143)Information on using THERMOTRONIC
automatic climate control
Automatic climate control The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †. R
Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well. The indi-
cator lamp in the ábutton goes out. Overview of climate control systems
139Climate control