2015 MERCEDES-BENZ A-CLASS HATCHBACK cooling

1, 2, 3 ...
4ETS (Electronic Traction System) see ETS/4ETS (Electronic Trac-
tion System)
4MATIC
Display message ............................ 288
4MATIC (permanent four-wheel
drive) .................................................. 208
12 V socket
see Sockets A
ABS (Anti-lock Braking System) Display message ............................ 258
Function/notes ................................ 69
Important safety notes .................... 69
Warning lamp .................................2 95
Accident
Automatic measures after an acci-
dent ................................................. 57
Activating/deactivating air-recir-
culation mode ................................... .146
Activating/deactivating cooling
with air dehumidification ................. 141
Active Parking Assist
Detecting parking spaces .............. 213
Display message ............................ 279
Exiting a parking space .................. 216
Function/notes ............................ .212
Important safety notes .................. 212
Parking .......................................... 214
Towing a trailer .............................. 212
ADAPTIVE BRAKE ................................. 77
Adaptive Brake Assist
Function/notes ................................ 72
Adaptive brake lights .......................... 73
Adaptive Damping System
Function/notes ............................ .207
Adaptive Highbeam Assist
Display message ............................ 274
Function/notes ............................ .123
Switching on/off ........................... 124
Additional speedometer ................... 250
Additives (engine oil) ........................ 401
Adjusting the headlamp range ......... 122Air conditioning
General notes ................................ 136
Air filter (white display message) .... 277
Air pressure
see Tyre pressure
Air vents
Important safety notes .................. 153
Rear ............................................... 154
Setting the centre air vents ........... 154
Setting the side air vents .............. .154
Air-conditioning system
see Climate control
Airbag
Automatic front-passenger front
airbag deactivatio n .......................... 49
Introduction ..................................... 46
PASSENGER AIR BAG indicator
lamps ............................................... 41
Airbags
Display message ............................ 270
Front airbag (driver, front
passenger) ....................................... 47
Important safety guidelines ............. 46
Kneebag .......................................... .48
Sidebag ............................................ 48
Triggering ......................................... 55
Windowbag ...................................... 49
Alarm
ATA (Anti-Theft Alarm system) ......... 78
Switching off (ATA) .......................... 78
Switching the function on/off
(ATA) ................................................ 78
Alarm system
see ATA (Anti-Theft Alarm system)
AMG
Performance Seat .......................... 111
RIDE CONTROL sports suspen-
sion ................................................ 207
AMG menu (on-board computer) ..... 254
AMG Performance exhaust sys-
tem ..................................................... 164
Anti-glare film .................................... 319
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Aquaplaning ....................................... 1904
Index

Plastic trim .................................... 334
Reversing camera .......................... 333
Roof lining ...................................... 335
Seat belt ........................................3 35
Seat cover ..................................... 335
Sensors ......................................... 332
Steering wheel ............................... 334
Trim pieces ................................... .335
Washing by hand ........................... 330
Wheels .......................................... .331
Windows ........................................ 331
Wiper blades .................................. 332
Wooden trim .................................. 335
CD player (on-board computer) ........245
Central locking
Automatic locking (on-board com-
puter) ............................................. 251
Locking/unlocking (key ).................. 83
Centre console
Lower section .................................. 35
Upper section .................................. 34
Changing bulbs
Brake lamps ................................... 128
Dipped-beam headlamp s............... 127
Main-beam headlamp s................... 127
Rear foglamp ................................. 128
Reversing lamps ............................ 128
Turn signals (front) ......................... 128
Turn signals (rear) .......................... 128
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 62
ISOFIX .............................................. 59
On the front-passenger sea t............ 61
Rearward-facing restraint system .... 62
Recommendations ........................... 66
Suitable positions ............................ 62
Top Tether ....................................... 60
Child-proof locks
Important safety notes .................... 67
Rear doors ....................................... 68
Cigarette lighter ................................ 316
Cleaning
Mirror turn signal ........................... 332
Trailer tow hitch ............................. 333
Climate control
Air conditioning ............................. 137 Auxiliary heating/ventilation .......... 148
Controlling automaticall
y............... 142
Convenience opening/closing
(air-recirculation mode) ................. 146
Cooling with air dehumidification .. 141
Demisting the windows .................. 144
Demisting the windscreen ............. 144
Indicator lamp ................................ 142
Information on using
THERMOTRONIC automatic cli-
mate control .................................. 139
Notes on using the air-condition-
ing system ..................................... 137
Overview of systems ...................... 136
Problem with the rear window
heating .......................................... 146
Problems with cooling with air
dehumidification ............................ 142
Setting the air distribution ............. 143
Setting the air vents ...................... 153
Setting the airflow ......................... 143
Setting the temperature ................ 142
Switching air-recirculation mode
on/of f............................................ 146
Switching on/of f........................... 140
Switching residual heat on/off ...... 147
Switching the rear window heat-
ing on/of f...................................... 145
Switching the ZONE function on/
off .................................................. 143
THERMOTRONIC (2-zone) auto-
matic climate control ..................... 139
Cockpit
Overview .......................................... 28
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 249
Display message ............................ 265
Operation/note s.............................. 70
COMAND display
Cleaning ......................................... 334
Combination switch .......................... 122
Consumption statistics (on-board
computer) .......................................... 242
Convenience closing feature .............. 95
Convenience opening feature ............ 95 Index
7

Convenience opening/closing (air-
recirculation mode) ...........................146
Coolant (engine)
Checking the level ......................... 326
Display message ............................ 275
Important safety notes .................. 402
Temperature (on-board computer, Mercedes-AMG vehicles) .............. .254
Temperature gauge ........................ 239
Warning lamp ................................. 301
Cooling
see Climate control
Copyright ............................................. 26
Crash-responsive emergency light-
ing ....................................................... 125
Cruise control
Activation conditions ..................... 193
Cruise control lever ....................... 192
Deactivating ................................... 194
Display message ............................ 281
Driving system ............................... 191
Important safety notes .................. 192
LIM indicator lamp ......................... 192
Selecting ........................................ 192
Setting a speed .............................. 193
Storing and maintaining current
speed ............................................. 193
Cup holder
Centre console .............................. 314
Important safety notes .................. 313
Rear compartment ......................... 314 D
Dashboard see Instrument cluster
Data
see Technical data
Daytime driving lights
Display message ............................ 273
Function/notes ............................ .120
Switching on/off (on-board com-
puter) ............................................. 251
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 23
Diagnostics connection ......................24
Diesel .................................................. 399 Digital speedometer
.........................243
Dipped-beam headlamps
Changing bulbs .............................. 127
Display message ............................ 271
Setting for driving abroad (sym-
metrical) ........................................ 120
Switching on/off ........................... 121
DIRECT SELECT lever
Automatic transmission ................. 169
Display message
Driving systems ............................ .278
Display messages
ASSYST PLUS ................................ 327
Calling up (on-board computer) ..... 257
Engine ............................................ 275
General information ....................... 257
Hiding (on-board computer) ........... 257
Key ................................................ 291
Lights ............................................. 271
Safety systems .............................. 258
Tyres .............................................. 283
Vehicle .......................................... .285
Distance warning function
Function/notes ................................ 71
Warning lamp ................................. 303
Distance warning signal (warning
lamp) ................................................. .303
DISTRONIC PLUS
Activation conditions ..................... 198
Cruise control lever ....................... 198
Deactivating ................................... 201
Display message ............................ 280
Displays in the multifunction dis-
play ................................................ 202
Driving tips ................................... .203
Function/notes ............................ .196
Important safety notes .................. 197
Selecting ........................................ 198
Setting the specified minimum
distance ......................................... 201
Stopping ........................................ 199
Door
Automatic locking (on-board com-puter) ............................................. 251
Automatic locking (switch) .............. .91
Central locking/unlocking (key) ...... 83
Control panel .................................. .37
Display message ............................ 289 8
Index

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Overview of climate control systems
General notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R activate air-recirculation mode only briefly
R activate the "Cooling with air dehumidifica-
tion" function
R activate the windscreen demisting function
briefly, if required
The air-conditioning system/
THERMOTRONIC automatic climate control
regulates the temperature and the humidity
of the vehicle interior and filters undesirable
substances from the air.
The air-conditioning system/
THERMOTRONIC automatic climate control
can only be operated when the engine is run-
ning. Optimum operation is only achieved
with the side windows and panorama sliding
sunroof closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 147).
Always keep the ventilation flaps behind the
side panelling clear (Y page 128). Otherwise
the vehicle will not be ventilated correctly. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 95). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. With THERMOTRONIC auto- matic climate control, gaseous pollutants
and odours will also be reduced. A clogged
filter reduces the amount of air supplied to
the vehicle interior. For this reason, you
should always observe the interval for
replacing the filter, which is specified in the Service Booklet. As this depends on envi-
ronmental conditions, e.g. heavy air pollu-
tion, the interval may be shorter than statedin the Service Booklet.
i Vehicles with auxiliary heating:
under
certain environmental conditions, the
residual heat function may be activated
automatically an hour after the key has
been removed in order to dry the automatic climate control. When the automatic cli-
mate control drying function is active, the
blue LED lamp is lit in the rocker switch in
the centre console. The vehicle is then ven-
tilated for 30 minutes.
Vehicles without auxiliary heating:
under certain environmental conditions,
the residual heat function may be activated automatically an hour after the key has
been removed in order to dry the automatic
climate control. The vehicle is then ventila-
ted for 30 minutes. 136
Overview of climate control systemsClimate control

Control panel for air-conditioning system
:
To set the temperature (Y page 142)
; To demist the windscreen (Y page 144)
= To set the air distribution (Y page 143)
? To activate/deactivate air-recirculation mode (Y page 146)
A To set the airflow (Y page 143)
B To activate/deactivate cooling with air dehumidification (Y page 141)
C To switch the rear window heating on/off (Y page 145)Notes on using the air-conditioning
system
Air-conditioning system Below, you can find a number of tips and rec-
ommendations for optimum use of the air-
conditioning system.
R Switch on the air-conditioning system by
turning control knob Aclockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation for avoiding misted
windows at low exterior temperatures
or in rain: switch on the ¿cooling with
dehumidification function (Y page 141).
Set air distribution to ¯and if possible
switch off PandO (Ypage 143).
Deactivate air-recirculation mode e
(Y page 146). Set airflow control
Ato a setting between
3 and 6(Y page 143).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control Ato a setting between 3
and 6(Y page 143).
R Recommendation for a constant vehi-
cle interior temperature: set airflow con-
trol Ato a setting between 1and 3
(Y page 143).
R Recommendation for air distribution in
winter: select the Oand¯ settings
(Y page 143).
Recommendation for air distribution in
summer: select the PorP and
¯ settings (Y page 143).
R Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again. Overview of climate control systems
137Climate control

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

Activating/deactivating cooling with
air dehumidification
General notes If you deactivate the "Cooling with air dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can mist up more quickly. Therefore,
only deactivate the "Cooling with air dehu-
midification" function briefly.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of the vehicle when cooling mode is active. Thisis normal and not a sign that there is a mal-
function.
Activating/deactivating X
To activate: press the¿button.
The indicator lamp in the ¿button lights
up.
X To deactivate: press the¿button.
The indicator lamp in the ¿button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. Operating the climate control system
141Climate control

Problems with the "Cooling with air dehumidification" function
Problem
Possible causes/consequences and
M
MSolutions The indicator lamp in
the
¿ button
flashes three times or
remains off. The cool-
ing with air dehumidifi-
cation function cannot
be activated. The cooling with air dehumidification function has been deactiva-
ted due to a malfunction.
X Visit a qualified specialist workshop. Setting climate control to automatic
mode
General notes Only THERMOTRONIC automatic climate con-
trol features the "Control climate control
automatically" function.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If desired, cooling with
air dehumidification can be deactivated.
If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-cle will also not be dehumidified. The win-
dows can mist up more quickly. Therefore,
only deactivate the "Cooling with air-dehu-
midification" function briefly.
Setting climate control to automatic
mode X
Turn the key to position 2in the ignition
lock (Y page 157).
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated. X
To switch to manual mode: press the
É orË button.
or
X Press the KorI button.
The indicator lamp in the Ãbutton goes
out. Automatic air distribution and airflow
are deactivated. Setting the temperature
Air-conditioning system You can set the temperature for the entire
vehicle. The set temperature is automatically
maintained at a constant level.
X Turn the key to position 2in the ignition
lock (Y page 157).
X To increase/reduce: turn control:anti-
clockwise or clockwise (Y page 137). Only
change the temperature setting in small
increments. Start at 22 †.
THERMOTRONIC automatic climate
control Different temperatures can be set for the
driver's and front-passenger sides. The set
temperature is automatically maintained at a
constant level.
X Turn the key to position 2in the ignition
lock (Y page 157).
X To increase/reduce: turn control:orE
anti-clockwise or clockwise (Y page 139).142
Operating the climate control systemClimate control