ESP MERCEDES-BENZ A CLASS 2012 Owner's Guide

Adjusting the headlamp range (halogen
headlamps)
The headlamp range control allows you to
adjust the cone of light from the headlamps
to suit the vehicle load.
Headlamp range control
g
Driver's seat and front-passenger seat
occupied
1 Driver's seat, front-passenger seat and
rear seats occupied
2 Driver's seat, front-passenger seat and
rear seats occupied, luggage compart-
ment laden
3 Driver's and front-passenger seats occu-
pied and maximum permissible rear axle
load utilised, e.g. when towing a trailer
X Start the engine.
X Turn the headlamp range control to the
position which corresponds to the load in
your vehicle. Combination switch
Turn signals :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ; or ?.
The corresponding turn signal flashes three
times.
X To indicate: press
the combination switch
beyond the pressure point in the direction
of arrow ; or ?.
Main-beam headlamps X
To switch on the main-beam head-
lamps: turn the key in the ignition lock to
position 2 or start the engine.
X Turn the light switch to L or Ã.
X Press the combination switch beyond the
pressure point in the direction of
arrow :.
In

the à position, the main-beam head-
lamps are only switched on when it is dark
and the engine is running. Exterior lighting
107
Lights and windscreen wipers Z

The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
(Y page 223).
Manual interior lighting control
X
To switch the front interior lighting on:
set the switch to the c position.
X To switch off the interior lighting: set the
switch to the | position or (if the door
is closed) to the centre position.
X To switch the rear interior lighting on/
off: press the u button.
X To switch the reading lamps on/off:
press the p button. Crash-responsive emergency lighting
The
interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or
X Lock and then unlock the vehicle using the
key. Replacing bulbs
Important safety notes
Xenon bulbs G
DANGER
Xenon bulbs are under high voltage. You can
get
an electric shock if you remove the cover
of the xenon bulb and touch the electrical
contacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the xenon bulb. Always have work on
the xenon bulbs carried out at a qualified spe-
cialist workshop. If your vehicle is equipped with xenon bulbs,
you can recognise this by the following: the
cone of light from the xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
Bulbs and lamps are an important aspect of
vehicle

safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs G
WARNING
Bulbs, lamps and plug connectors can
become very hot during use. When replacing
a

bulb, you could burn yourself on these com-
ponents. There is a risk of injury.
Allow these components to cool down before
replacing the bulb.
There are bulbs other than the xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 113). Have the bulbs that
you cannot replace yourself replaced at a
qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when fitting.
Only use bulbs of the correct type.
If the new bulb still does not light up, consult
a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly. 112
Replacing bulbs
Lights and windscreen wipers

Right-hand side trim panel
X
To open: turn release knob : 90° in the
direction
of the arrow and remove side trim
panel ;.
X To close:
insert side trim panel ; and turn
release knob : 90° in the opposite direc-
tion to the arrow.
Tail lamps X
Switch off the lights.
X Open the luggage compartment.
X Open the side trim panel ( Y page 115).X
Release and remove connector ;.
X Unscrew wing nut :
and remove the lamp
cluster. Lamp cluster
X
Remove plastic nut ? using a suitable
item, e.g. a coin.
X Release attachments =.
X Remove the bulb holder from the lamp clus-
ter. Bulb holder
A
Tail lamp/brake lamp
B Reversing lamp
C Rear foglamp
D Tail lamp
E Turn signals
X Tail lamp/brake lamp/rear foglamp/
reversing lamp: remove the correspond-
ing bulb from the bulb holder.
X Insert the new bulb into the bulb holder.
X Turn signal lamp: lightly press the bulb
into the bulb holder, turn it anti-clockwise
and remove it from the bulb holder. 116
Replacing bulbs
Lights and windscreen wipers

Switching the rear window wiper on/
off
Combination switch
:
è Switch
2 ô To wipe with washer fluid
3 I To switch on intermittent wiping
4 0 To switch off intermittent wiping
5 ô To wipe with washer fluid
X Turn the key to position 1 or 2 in the ignition
lock.
X Turn switch : on the combination switch
to the corresponding position.
When

the rear window wiper is switched on,
the icon appears in the instrument cluster. Replacing the wiper blades
Important safety notes G
WARNING
If the windscreen wipers begin to move while
you
are changing the wiper blades, you can be
trapped by the wiper arm. There is a risk of
injury.
Always switch off the windscreen wipers and
ignition before changing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
! Never open the bonnet/tailgate if a wiper
arm is folded away from the windscreen/
rear window. Never fold a windscreen wiper arm without
a wiper blade back onto the windscreen/
rear window.
Hold

the windscreen wiper arm firmly when
you change the wiper blade. If you release
the wiper arm without a wiper blade and it
falls onto the windscreen/rear window, the
windscreen/rear window may be damaged
by the force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified
specialist workshop.
Replacing the windscreen wiper blades Removing the wiper blades
X
Remove the key from the ignition lock.
X Fold the wiper arm away from the wind-
screen. X
Press both release clips ;.
X Fold wiper blade : in the direction of
arrow = away from wiper arm ?.
X Remove wiper blade : in the direction of
arrow A.118
Windscreen wipers
Lights and windscreen wipers

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

Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed
spaces which do not have an extrac-
tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To
guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from
the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable material such as leaves, grass or
twigs

may ignite if they come into contact with
hot parts of the exhaust system for extended
periods. There is a risk of fire.
When the auxiliary heating is switched on,
make sure that no flammable material can
come into contact with hot vehicle compo-
nents.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
i Switch the auxiliary heating on regularly
once a month for about ten minutes.
The auxiliary heating heats the air in the vehi-
cle interior to the set temperature. This
occurs without using the heat of the running
engine. The auxiliary heating is operated
directly using the vehicle's fuel. For this rea-
son, the fuel tank must be at least ¼ full to
ensure that the auxiliary heating functions. The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather

conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventila-
tion switches off when you turn the key to key
position 2(Y page 143).
The auxiliary heating switches off automati-
cally after 30 minutes.
You cannot use the auxiliary ventilation to
cool the vehicle interior to a temperature
lower than the outside temperature.
Before switching on X
Turn the key to position 2 in the ignition
lock (Y page 143).
X Set the desired temperature.
Auxiliary heating or ventilation can also be
switched on if the manually set climate con-
trol is activated. Optimum comfort can be
attained

when the system is set to automatic
mode. Set the temperature to 22 †.
The auxiliary heating/ventilation can be acti-
vated or deactivated using the remote control
or the button on the centre console.
The on-board computer can be used to spec-
ify up to three departure times, one of which
may be preselected ( Y page 224).134
Operating the climate control systemClimate control

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 an
environmentally 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.
One 6 V pin battery, type 2CR11108 is
required. X
Prise apart the side arms of battery
cover ; and pull off battery cover ;.
X Remove old battery :.
X Insert the new battery. Observe the polarity
signs on the back of the remote control
when doing so.
X Slide battery cover ; back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. Operating the climate control system
137
Climate control Z

more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only set the automatic transmission to the
respective drive positions when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. Otherwise, you could damage the
drive train.
! AMG vehicles: avoid full-load operation
and engine speeds greater than 5000 rpm
when the engine is cold. This helps to pro-
tect the engine and avoids uncomfortable
driving. Key positions
g
To remove the key
1 Power supply for some consumers, such
as the windscreen wipers 2
Ignition (power supply for all consumers)
and drive position
3 To start the engine
Vehicles with manual transmission: the
steering is locked when the key is taken out
of the ignition lock.
i If the key does not belong to the vehicle,
it can still be turned in the ignition lock.
However, the ignition will not be switched
on. The engine cannot be started. Starting the engine
Important safety notes G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these

exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation. G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite

if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
! Do not depress the accelerator pedal
when starting the engine.
i Vehicles with a petrol engine: the
engine runs at a higher engine speed during
the cold start procedure so that the cata-
lytic converter can reach operating tem-
perature more quickly. The sound of the
engine may change as a result. Driving
143
Driving and parking Z

i
The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature ( Y page 223).
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Pulling away with a trailer To ensure that you do not roll backwards
when

pulling away on an uphill slope, engage
the electric parking brake.
X Press and hold handle :.
The electric parking brake continues to
brake and prevent the vehicle from rolling
backwards.
The red ! indicator lamp in the instru-
ment cluster remains lit.
X Depress the accelerator pedal.
X As soon as the vehicle/trailer combination
is held by the driving force of the engine,
release lever :.
The electric parking brake is released.
The red ! indicator lamp in the instru-
ment cluster goes out.
i For further information on the electric
parking brake, see ( Y page 163). Hill start assist G
WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient.
It holds the vehicle for a short time after you
have

removed your foot from the brake pedal.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal
and depress it before the vehicle begins to
roll.
X Remove your foot from the brake pedal.
The

vehicle is then held for about a second.
X Pull away.
Hill start assist will not function if:
R you are pulling away on a level road or a
downhill gradient.
R on vehicles with automatic transmission,
the transmission is in position N.
R the electric parking brake is engaged.
R ESP ®
is malfunctioning.
Further information on holding the vehicle
stationary on uphill gradients

(Y page 154). ECO start/stop function
Introduction The ECO start/stop function switches the
engine

off automatically if the vehicle is stop-
ped under certain conditions.
When pulling away again, the engine starts
automatically. The ECO start/stop function
thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle. Driving
145
Driving and parking Z

Problems with the engine
Problem Possible causes/consequences and
M SolutionsThe engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X
Deactivate the HOLD function (Y page 179) or DISTRONIC
PLUS (Y page 173).
X Try to start the engine again. The engine does not
start.
The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Turn the key back to position 0 in the ignition lock before
attempting to start the engine again.
X Try to start the engine again (Y page 143). Avoid excessively
long

and frequent attempts to start the engine, as this will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start.

The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display shows 0. The fuel tank is empty.
X
Refuel the vehicle. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 308).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop, e.g. a Mercedes-Benz
Service Centre. Driving
149
Driving and parking Z