2012 MERCEDES-BENZ A CLASS clock

Control panel for THERMATIC automatic climate control
:
To set the temperature (Y page 128)
; To demist the windscreen (Y page 130)
= To set the air distribution ( Y page 129)
? To activate/deactivate air-recirculation mode ( Y page 132)
A To set the airflow ( Y page 129)
B To activate/deactivate cooling with air dehumidification (Y page 126)
C To switch the rear window heating on/off ( Y page 131)Notes on using THERMATIC automatic
climate control
Automatic climate control The following contains notes and recommen-
dations
on optimum use of THERMATIC auto-
matic climate control.
R Switch on the air-conditioning system by
turning control knob A clockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation to avoid misting of
the windows in the event of low outside
temperatures or rain: switch on the air
distribution ¯ and if possible switch off
P and O(Y page 129).
Deactivate air-recirculation mode
d(Y page 132). Set airflow control
A
to a setting between
3 and 6(Y page 129).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control A to a setting between 3
and 6(Y page 129).
R Recommendation for a constant vehi-
cle interior temperature: set airflow con-
trol A to a position between 1 and
3(Y page 129).
R Recommendation for air distribution in
winter: select the O and ¯ settings
(Y page 129).
Recommendation for air distribution in
summer: select the P or P and
¯ settings ( Y page 129).
R Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again. Overview of climate control systems
123
Climate control

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 á button goes out.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when
the ignition is switched off. The resid-
ual heat function can only be activated or
deactivated with the ignition switched off.
ECO start/stop function During automatic engine switch-off, the cli-
mate

control only operates at a reduced capa-
city. If you require the full climate control out-
put, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 147). Operating the climate control system
Switching climate control on/off
Points to observe before use When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could then mist
up.

Therefore, switch off climate control only
briefly.
THERMATIC automatic climate control X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To switch on: turn
control A clockwise to
the desired position (except position 0)
(Y page 123).
X To switch off: turn control A anti-clock-
wise to position 0(Y page 123). THERMOTRONIC automatic climate
control X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To activate: press the à button.
The
indicator lamp in the à button lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^ button.
The

indicator lamp in the ^ button goes
out. The previous settings are reactivated.
X To deactivate: press the ^ button.
The
indicator lamp in the ^ button lights
up.
i THERMOTRONIC automatic climate con-
trol: switch on climate control primarily
using the à button. Activating/deactivating the cooling
with air dehumidification function
Points to observe before use If you deactivate the "Cooling with air dehu-
midification

function", the air inside the vehi-
cle will not be cooled in warmer weather. The
air inside the vehicle will not be dehumidified
either. The windows can mist up more
quickly. Therefore, only switch off the "Cool-
ing with air dehumidification 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. This
is normal and not a sign that there is a mal-
function. 126
Operating the climate control system
Climate control

Problems with the "Cooling with air dehumidification" function
Problem Possible causes/consequences and
M SolutionsThe indicator lamp in
the ¿ button
flashes three times or
remains off. The "Cool-
ing with air dehumidifi-
cation
function" cannot
be switched on. Cooling with air dehumidification has been deactivated due to a
malfunction.
X
Visit a qualified specialist workshop. Setting climate control to automatic
mode
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 in warmer weather. The
air inside the vehicle will not be dehumidified
either. The windows can mist up more
quickly. Therefore, only switch off the "Cool-
ing with air-dehumidification function" briefly.
X Turn the key to position 2 in the ignition
lock (Y page 143).
X Set the desired temperature.
X To activate: press the à button.
The
indicator lamp in the à button lights
up. Automatic air distribution and airflow
are activated. X
To switch to manual operation:
press the
É or Ë button.
or
X Press the K or I button.
The
indicator lamp in the à button goes
out. Automatic air distribution and airflow
are deactivated. Setting the temperature
THERMATIC automatic climate control You can set the temperature for the entire
vehicle.
X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To increase/reduce: turn control :
clockwise or anti-clockwise (Y page 123).
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.
X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To increase/reduce: turn controls : or
E clockwise or anti-clockwise
(Y

page 125). Only change the temperature
setting in small increments. Start at 22 †. 128
Operating the climate control system
Climate control

Setting the air distribution
THERMATIC automatic climate control Air distribution settings
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
i You can also activate several of the air
distribution settings simultaneously. In
order to do this, press several of the air
distribution buttons. The air is then routed
through different air vents.
Setting the air distribution
X Turn the key to position 2 in the ignition
lock (Y page 143).
X Press one or more of the P, O,
¯ buttons.
The corresponding indicator lamp comes
on.
THERMOTRONIC automatic climate
control Air distribution settings
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs airflow through the centre and
side
air vents as well as the footwell air
vents 10
.
b Directs the airflow through the centre
and

side air vents as well as the demis-
ter vents 10
a Directs the airflow through the foot-
well and demister vents i
Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed

if the adjusters are turned clockwise
until they engage.
Setting the air distribution
X Turn the key to position 2 in the ignition
lock (Y page 143).
X Press the É or Ë button until the
desired symbol appears in the display. Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To increase/reduce: turn control A
clockwise or anti-clockwise (Y page 123).
THERMOTRONIC automatic climate
control X
Turn the key to position 2 in the ignition
lock (Y page 143).
X To increase/reduce: press the K or
I button. Switching the ZONE function on/off
This function is only available with the
THERMOTRONIC automatic climate control.
X To activate: press the á button.
The
indicator lamp in the á button lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To deactivate: press the á button.
The
indicator lamp in the á button goes
out.
10 Only for certain countries. Operating the climate control system
129
Climate control

The temperature setting for the driver's
side is adopted for the front-passenger
side.
Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the "Windscreen
demisting" function until the windscreen is
clear again.
X Turn the key to position 2 in the ignition
lock (Y page 143).
X To activate: press the ¬ button.
The
indicator lamp in the ¬ button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
i The "Windscreen demisting" function
automatically

sets the blower output to the
optimum demisting effect. As a result, the
airflow may increase or decrease automat-
ically after the button is pressed.
i You can adjust the blower output man-
ually while the "Windscreen demisting"
function is in operation:
R THERMATIC automatic climate con-
trol: turn temperature control A clock-
wise or anti-clockwise ( Y page 123).
R THERMOTRONIC automatic climate
control: press the ó or ô button.
X To deactivate: press the ¬ button.
The
indicator lamp in the ¬ button goes
out. The previous settings are reactivated. Air-recirculation mode remains deactiva-
ted.
or
X Press the à button 11
.
The
indicator lamp in the ¬ button goes
out. Airflow and air distribution are set to
automatic mode.
or
X THERMATIC automatic climate control:
turn temperature control : clockwise or
anti-clockwise (Y page 123).
THERMOTRONIC automatic climate
control: turn temperature controls : or
E clockwise or anti-clockwise
(Y page 125). Demisting the windows
Windows misted up on the inside THERMATIC automatic climate control
X
Activate the ¿ "Cooling with air dehu-
midification" function.
X If the windows continue to mist up, activate
the "Windscreen demisting" function
(Y page 130).
i You should only select this setting until
the windscreen is clear again.
THERMOTRONIC automatic climate con-
trol
X Activate the ¿ "Cooling with air dehu-
midification" function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the "Windscreen demisting" function
(Y page 130).
i You should only select this setting until
the windscreen is clear again.
11 THERMOTRONIC only.130
Operating the climate control system
Climate control

Display messages Possible causes/consequences and
M SolutionsThe auxiliary heating cannot be switched on or has switched itself
off.
There is too little fuel in the fuel tank.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control. The auxiliary heating cannot be switched on or has switched itself
off.
The auxiliary heating is faulty.
X
Have the auxiliary heating checked at a qualified specialist
workshop. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the vents or ventilation grilles
in the vehicle interior.
i Move the adjusters for the air vents ver-
tically or horizontally, to set the direction of
the airflow.
i Optimal climate control function is ach-
ieved by opening the air vents fully and set-
ting the adjusters to the middle position. Setting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents : anti-
clockwise.
X To close the centre air vent: turn the
adjuster
in one of centre air vents : clock-
wise until it engages. Adjusting the air vents
139
Climate control Z

Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster
in side air vent ; anti-clockwise.
X To close a side air vent: turn the adjuster
in side air vent ; clockwise until it
engages. Setting the rear-compartment air
vents
:
Rear-compartment air vent, left
; Rear-compartment air vent, right
= Rear-compartment air vent thumbwheel
X To open/close: turn
thumbwheel = up or
down. 140
Adjusting the air vents
Climate control

on the ignition if you accidentally refuel
with
the wrong fuel. Otherwise, the fuel will
enter the fuel system. Even small amounts
of the wrong fuel could result in damage to
the fuel system and the engine. The repair
costs are high. Notify a qualified specialist
workshop and have the fuel tank and fuel
lines drained completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel
can. The fuel lines and/or the diesel injec-
tion system could otherwise be blocked by
particles from the fuel can.
Do not get into the vehicle again during the
refuelling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank, some fuel may
spray out when you remove the fuel pump
nozzle.
For further information on fuel and fuel quality
(Y page 339). Refuelling
Opening/closing the fuel filler flap :
To open the fuel filler flap
; Tyre pressure table
= To insert the fuel filler cap
? Fuel type to be refuelled The fuel filler flap is unlocked or locked auto-
matically
when you open or close the vehicle
with the key.
The position of the fuel filler cap is displayed
æ in the instrument cluster. The arrow
next to the filling pump indicates the side of
the vehicle.
Opening X
Switch off the engine.
X Remove the key from the ignition lock.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
X Turn the fuel filler flap anti-clockwise and
remove it.
X Insert the fuel filler cap into holder on the
inside of fuel filler flap =.
X Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place
and refuel.
X Only fill the tank until the pump nozzle
switches off.
i Do not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel may leak out.
Closing X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X Close the fuel filler flap.
i Close
the fuel filler flap before locking the
vehicle. 160
Refuelling
Driving and parking