Heating and air conditioning system
83
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Climatic (semi-automatic air conditioning system)*Description Climatic is a combined cooling an
d heating system with electronic
control of the convenience temperature in the vehicle interior. It makes it possible to optimally control the air temperature at any season of the year.Description of the Climatic It is important for your safety and for your
driving comfort that the Climatic is operating
properly. The air conditioning system operates when switch
page 83, fig. 91
is
pressed and the following
conditions are met:
engine running,
outside temperature above +2°C and
blower switch switched on (positions 1 to 4).
If the cooling system is switched on, the temperature and air humidity drops in the vehicle. The wellbeing of the occupants of the
car is enhanced as a result of this partic-
ularly at high outside temperatures and a
high air humidity. The system prevents the
windows misting up during th
e cold season of the year.
The heating effect is dependent upon the c
oolant temperature, thus
full heat output
only occurs when the engine has reached its operating temperature. It is possible to briefly activate recirculat
ed air mode in order to enhance the cooling
effect
.
Air at a temperature of about 5°C may flow
out of the vents under certain circum-
stances when the cooling system is operatin
g. Lengthy and uneven distribution of the
air flow out of the vents (in particular at the leg area) and large differences in temper-ature, for example when getting out of the ve
hicle, can result in chills in sensitive
persons. The air inlet in front of the windscreen must
be free of ice, snow or leaves in order to
ensure that the heating and cooling systems operate properly.
After switching on the cooling
Condensation
from the evaporator of the air condi-
tioning may drip down and form a puddle be
low the vehicle. This is quite normal and
not an indication of a leak!
WARNING
For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and misting. Please familiarize yourself about how to correctly operate
the heating and ventilation systems, how to demist
and defrost the windows, as well as with the cooling mode.
You should not leave recirculated air mode on over a longer period of time,
as “stale” air may result in fatigue in the driver and occupants, divert your attention and also cause the windows to mist up. The risk of having an accident increases. Switch recirculated air mo
de off as soon as the windows begin
misting up.
Note
We recommend that you do not smoke in
the vehicle when the recirculating air
mode is operating since the smoke which is drawn at the evaporator from the interior of the vehicle forms deposits in the evapor
ator of the air conditioning system. This
produces a permanent odour when the Climat
ic is operating which can only be elimi-
nated through considerable effort and
expense (replacement of compressor).
Using the system
AC
AE
Fig. 91 Climatic: Control elements
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Heating and air conditioning system
85
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Set ClimaticRecommended settings of Climatic contro
ls for the respective operating modes:
Note
We recommend that you leave the air outlet vents
3 page 80, fig. 89
in the opened
position.
Setup
Setting of the control dial
Button
Air outlet vents 4
Defrosting the windscreen and side windows
Recommended
22°C
3
Do not switch on
Switched off
Open and align with the side
window
Free windscreen and side win- dows from mist
Desired tempera-
ture
2
Do not switch on
Switched on
Open and align with the side
window
The fastest heating
Recommended
22°C
3
Briefly switched on
Switched off
Opening
Comfortable heating
Desired tempera-
ture
2 or 3
Do not switch on
Switched off
Opening
The fastest cooling
Recommended
22°C
briefly4, then 2or
3
Briefly switched on
Switched on
Opening
Optimal cooling
Desired tempera-
ture
1, 2 or 3
Do not switch on
Switched on
Open and align to the roof
Fresh air mode - ventilation
To the left up to the
stop
Desired position
Do not switch on
Switched off
Opening
AA
AB
AC
AD
AE
s3j8.a.book Page 85 Tuesday, April 20, 2010 1:10 PM
Heating and air conditioning system
86Using the air conditioning system economicallyThe compressor on the Climatic uses powe
r from the engine when in cooling mode
which will effect the fuel consumption. It recommended to open the windows or the
doors of a vehicle for which the interior
has been strongly heated through the effect
of direct sunlight in order to allow the
heated air to escape. The cooling system should not be switched
on while travelling when the window is
open. The desired interior temperature can also be achieved without switching in the cooling system just by switching to fresh air mode.
For the sake of the environment
When you economize on fuel, you also reduce pollutant emissions.Operational malfunctionsIf the cooling system does not operate at outside temperatures higher than +5 °C, there is a problem in the system. The reasons for this may be:
The fuse of the Climatic is defective. Check the fuse, replace it if necessary
page 195.
The cooling system has switched off automatically for a short time because the
coolant temperature of the engine is too hot
page 16.
If you are not able to rectify the operational
problem yourself, or if the cooling capacity
decreases, switch the cooling system off. Contact a specialist garage. If there is a fault at the Climatronic, all symbols on the display flash after switching on the ignition for 15 seconds. Contact a specialist garage.
Climatronic* (automatic air conditioning)Description The Climatronic system is a combinat
ion of an automatic heating, fresh
air and cooling system which provides optimal comfort for the occu- pants of the car.The Climatronic maintains a constant temperat
ure fully automatically, once it has been
set. This is achieved by automatically varying the temperature of the outflowing air, the blower stages and the air distribution. The system also takes into account sunlight which eliminates the need to
alter the settings manually. The
automatic mode
page 88 ensures maximum wellbeing of the
occupants at all times of the year.
Description of Climatronic system The cooling operates only if the following conditions are met:
engine running,
outside temperature above approx. +2°C,
switched on.
If the cooling system is switched on, th
e temperature and air humidity drops in the
vehicle. The wellbeing of the occupants of the car is enhanced as a result of this partic-ularly at high outside temperatures and a high air humidity. The system prevents the windows misting up during the cold season of the year. The heating effect is dependent upon the coolant temperature, thus full heat output only occurs when the engine has reached its operating temperature. It is possible to briefly activate recirculat
ed air mode in order to enhance the cooling
effect
.
The air inlet in front of the windscreen must be free of ice, snow or leaves in order to ensure that the heating and cooling systems operate properly. The AC compressor is switched off at a high
coolant temperature in order to provide
cooling at a high load of the engine. After switching on the cooling
Condensation
from the evaporator of the air condi-
tioning may drip down and form a puddle be
low the vehicle. This is quite normal and
not an indication of a leak!
AC
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Heating and air conditioning system
87
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Recommended setting for all periods of the year:
Set the desired temperature, we recommend 22°C (72°F).
Press the button
fig. 92
.
Move the air outlet vents
3 and
4 so that the air flow is
directed slightly upwards.
Switching over between degrees
Celsius and degrees Fahrenheit
Press and hold the buttons and
fig. 92
at the same time. The information
in the desired temperature measuring unit appears in the display.
WARNING
For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and mistin
g. Please familiarize yourself about
how to correctly operate th
e heating and ventilation systems, how to demist
and defrost the windows, as well as with the cooling mode.
You should not leave recirculated air mode on over a longer period of time,
as “stale” air may result in fatigue in the driver and occupants, divert your attention and also cause the windows to mist up. The risk of having an accident increases. Switch recirculated air mode off as soon as the windows begin misting up.
Note
If the cooling system has not been switched on for a lengthy period, odours may
be produced at the evaporator because of
deposits. Switch the cooling system on at
least once a month for approximately 5 minut
es at the highest blower stage - also
during the cold se aso n of the y ear - i n o rde
r to avoid such odours. Also open a window
for a short time.
We recommend that you do not smoke in the vehicle when the recirculating air
mode is operating since the smoke which is drawn at the evaporator from the interior of the vehicle forms deposits in the evapor
ator of the air conditioning system. This
produces a permanent odour when the air co
nditioning system is operating which can
only be eliminated through considerable
effort and expense (replacement of
compressor).
The used air streams out through the air
removal openings in the luggage compart-
ment.
Using the cooling economically
page 86.
Operational problems
page 86.
Overview of the control elementsFig. 92 Climatronic: Control elementsButtons / control dial
Setting the interior temperature
The displays
Selected interior temperature, e.g. +22°C (72°F) Degrees Celsius or FahrenheitAutomatic air conditioning mode De-mist or de-ice the windscreen Air flow to the windscreen, head, upper body and feet Recirculated air mode Air conditioning sy
stem switched on
Set blower speed
Buttons / control dial
Setting the blower speed Interior temperature sensorAutomatic mode
AUTO
AUTO
AC
A1A2A3A4A5A6A7A8A9A10A11A12
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Starting-off and Driving
93
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
The handbrake warning is acti
vated if you drive at a speed of more than 6 km/h for
more than 3 seconds.
WARNING
Please note that the handbrake must be fully released. A handbrake which
is only partially released can result in the rear brakes overheating which will have a negative effect on the operation of
the brake system - risk of accident! In
addition this can result in premature wear of the rear brake pads.
Never leave children unattended in the vehicle. The children might, for
example, release the handbrake or take
the vehicle out of gear. The vehicle
might then move off - risk of accident!
Caution
After the car has come to a stop, always firs
t of all apply the handbrake firmly before
then additionally engaging a gear (manual gearbox) or moving the selector lever into position
P (automatic gearbox).
Parking aid*The parking aid provides a warning of obstacles behind the vehicle.The audible parking aid determines the di
stance between the rear bumper and an
obstacle located behind the vehicle with the
aid of ultrasound sensors. The sensors are
integrated in the rear bumper.
Range of sensors The clearance warning begins at a distance
of about 160 cm from the obstacle (area
fig. 97
). The interval between the warning si
gnals becomes shorter as the clearance
is reduced. A continuous tone sounds from
a distance of approx. 30
cm (area ) - danger area.
You should not reverse any further after this signal sounds!
If the vehicle is
equipped with a factory-fitted
towing device*, the border of the danger area starts -
continuous tone - 5 cm further behind th
e vehicle. The vehicle can be extended
through an installed deta
chable towing device.
Activating The parking aid is activated automatically when
reverse gear
is engaged and the igni-
tion is turned on. This
is confirmed by a brief acknowledgement signal.
Deactivating The parking aid is deactivated by disengaging the reverse gear or by switching the igni- tion off.
WARNING
The parking aid is not a substitute for
the driver paying proper attention and
it is always the driver's responsibility
to take care when parking the vehicle or
carrying out similar manoeuvres.
You should therefore satisfy yourself, before reversing, that there is no small
obstacle, such as a rock, thin post, trai
ler drawbar etc., behind your vehicle.
Such an obstacle might not be within the range detected by the sensors.
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the signal of the parking aid. Thus, these objects or people who wear such clothing are not recognised by the sensors of the parking aid.
Note
The parking aid does not operate if you
are towing a trailer (applies to models
which feature a factory-fitted towing device*).
A system fault is indicated if a warning signal sounds for about 5 seconds after
switching the ignition on and engaging reverse gear and there is no obstacle close to
Fig. 97 Parking aid: Range of sensors
AA
AB
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Starting-off and Driving
94your vehicle. It is possible that the audi
ble warning does not function correctly (an
obstacle behind the vehicle ma
y not be detected - take extra care). Have the fault recti-
fied by a specialist workshop.
If the audible warning sounds for 3 seconds after switching the ignition on and
engaging the reverse gear, a fault has occured in the system. It is possible that the audible warning does not function correctl
y (an obstacle behind the vehicle may not
be detected - take extra care). Have the
fault rectified by a specialist workshop.
The sensors must be kept clean and free of ice to enable the parking aid to operate
properly.
If the parking aid is activated and the sele
ctor lever of the automatic gearbox is in
the position , warning signal indicates interruption (vehicle can no longer move).Cruise control system (CCS)*IntroductionThe cruise control system (CCS) maintains
a constant speed, more than 30 km/h (20
mph), once it has been set, without you havi
ng to depress the accelerator pedal. This
is only possible within the range which is permitted by the power output and braking power of the engine. The cruise control system
makes it possible - particularly on long
journeys - for you to rest your “accelerator foot”.
WARNING
For safety reasons, the cruise control system must not be used in dense
traffic or on unfavourable road surfaces
(such as icy roads, slippery roads, loose
gravel) - risk of accident!
In order to prevent unintentional use of the cruise control system, always
switch off the system after use.
Note
Models fitted with a manual gearbox: Always
depress the clutch pedal if you switch
on the cruise control system when the gearbo
x is in Neutral! Otherwise the engine can
rev up unintentionally.
The cruise control system is not able to maintain a constant speed when driving on
steep downhill sections. The weight of the vehicle increases the speed at which it travels. One should shift down in good time
to a lower gear or slow the vehicle down
by applying the foot brake.
It is not possible on vehicles fitted with
an automatic gearbox to switch on the
cruise control system if the sele
ctor lever is in the position
P, N or R.
Storing a speedThe cruise control system is operated by means of the switch and the rocker button in the left lever of the multi-functional switch. – Press the switch
fig. 98
into the position
ON
.
– After the desired speed has been reached, press the rocker button into the
SET-
position - the current speed is stored.
After you have released the rocker button out of the position
SET-
, the speed you
have just stored is maintained at a consta
nt speed without having to depress the accel-
erator. You can
increase
the speed by depressing the acce
lerator. Releasing the accelerator
will cause the speed to
drop
again to the set speed.
This does not apply, however, if you drive at
a speed which is more than 10 km/h higher
than the set speed for a period of longer
than 5 minutes. The stored speed will be
cancelled in the memory. You then have to re-store the desired speed. One can
reduce
the speed in the usual manner. The system is switched off temporarily
by actuating the brake or clutch pedal
page 95.
AP
Fig. 98 Operating lever: Rocker button and switch of the cruise control system
AA
AB
AA
AB
AB
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Starting-off and Driving
97
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Messages in the instrument cluster (valid for vehicles without information display*)
WARNING
If the engine is switched off, neit
her the brake booster nor the electrohy-
draulic power steering operates.
Never let the vehicle roll wi
th the engine switched off.
Caution
If the “START-STOP” system is used at very
high outside temperatures over a longer
period of time, the vehicl
e battery can be damaged.
Note
A change in ambient temperature can affect the temperature inside the battery
with several hours delay. For example, if
the vehicle is standing outside for a long
period of time at a temperature below freezi
ng, or vice versa under
direct sunlight, it
may take several hours until the temperat
ure inside the battery reaches the appro-
priate temperature for the START-STOP system.
In some cases, it is necessary to manually start the engine using the key (for
example, if the driver's seat belt is not fastened or if the driver door is open for a period of more than 30 seconds during the stop
phase). Pay attention to the relevant
messages in the instrument cluster.
If the Climatronic* is switched into the automatic mode, this may in certain circum-
stances prevent the automatic engine shut down.
ERROR START STOP FEHLER START STOP
Error in the START-STOP system
ENGINE MUST RUN MOTORLAUF NOETIG
Automatic engine shut down is not possible
START STOP ACTIVE START STOP AKTIV
Automatic engine shut down (stop phase)
SWITCH OFF IGNITION ZUENDUNG AUSSCHALTEN
Switch off the ignition
START ENGINE MANUALLYMOTOR MANUELL STARTEN
Start the engine manu- ally
s3j8.a.book Page 97 Tuesday, April 20, 2010 1:10 PM
Automatic gearbox
98Automatic gearboxAutomatic gearbox*Information for driving with the 6-speed automatic gearbox* Your car is equipped with a conv
entional 6-speed automatic gearbox.
The maximum speed is reached in the 5th gear. The 6th gear serves as an economic driving programme, which is intended to redu
ce the fuel consumption. Shifting up and
down through the gears is performed automa
tically. You can also, however, switch the
gearbox over into the
Tiptronic mode
. This mode makes it possible for you to also shift
gears manually
page 102.
Starting-off and Driving– Depress the brake pedal fully and keep it depressed. – Press the Shiftlock button (button in ha
ndle of the selector lever), move the
selector lever into the
desired position, e.g.
D page 99, and then release the
Shiftlock button.
– Wait a moment until the gearbox has shif
ted (a slight engage
ment nudge can be
felt).
– Release the brake pedal and depress the accelerator
.
Stop– The selector lever position
N does not have to be selected when stopping just for
a short time, such as at a cross roads. It
is sufficient to hold
the vehicle stationary
using the foot brake. The engine can, however, be allowed just to idle.
Parking– Depress the brake pedal and hold it depressed. – Apply the handbrake firmly.– Press and Shiftlock button in the selector lever, move the selector lever to
P and
then release the Shiftlock button.
The engine can only be
started
when the selector lever is in position
P or N page 90.
It is sufficient to engage selector lever position
P when parking on a flat surface. When
parking on a slope you should first apply
the handbrake firmly and then move the
selector lever into position
P. This is to ensure that there is no excessive pressure acting
on the lock mechanism and that it is easier to subsequently move the selector lever out of position
P.
If the selector lever position
N is selected by accident while driving it is first necessary
to release pressure on the accelerator pedal and wait for idling speed of the engine to be reached before engaging a driv
e position in the selector lever.
WARNING
Do not depress the accelerator when changing the position of the selector
lever if the car is stationary and the engine is running - risk of accident!
Never move the selector lever into position R or P when driving - risk of an
accident!
When the engine is running and the vehi
cle is stationary, it is necessary to
hold the car with the brake pedal in all the positions of the selector lever (except P and N) since the power transmission is never completely interrupted, also not when the engine is idling - the vehicle creeps.Information for driving with the automatic gearbox DSG* The abbreviation DSG mean
s Direct shift gearbox (Direct shift gearbox).
Two independent clutches are needed for the power transmission between the engine and the gearbox. These replace the torque
converter of the conv
entional automatic
gearbox. Their shifting is matched in such
a way that there are no jerks when shifting
the gear and the power transmission of the engine to the front wheels is not inter- rupted. Shifting up and down through the
gears is performed automatically. You can
also, however, switch the gearbox over into the
Tiptronic mode
. This mode makes it
possible for you to also shift gears manually
page 102.
Starting-off and Driving– Depress the brake pedal fully and keep it depressed.
s3j8.a.book Page 98 Tuesday, April 20, 2010 1:10 PM