Heating and air conditioning system
118
Lengthy and uneven distribution of the air flow out of the vents (in particular at the leg area) and large differences in temperature, for example when getting out of the vehicle, can result in chills in sensitive persons.Recirculated air mode In recirculated air mode air is sucked
out of the interior of the vehicle
and then fed back into the interior. When the automatic air distribu-tion control is switched on, an air quality sensor measures the concentration of pollutants in the drawn-in air.Recirculated air mode prevents polluted air outside the vehicle from getting into the vehicle, for example when driving through a tunnel or when standing in a traffic jam. If a considerable increase in concentration of pollutants is recognized by the ai
r quality sensor, when the automatic
air distribution control is switched
on, the air distribution control will
temporarily be switched off. If the concentration of pollutants decreases to the normal level, the air distributi
on control is automatically switched
off so that fresh air can be guided into the vehicle interior. Switching recirculated air mode on – Press the button repeatedly until the warning light on the left
side of the button lights up.
Switch on automatic air distribution control – Press the button repeatedly until the warning light on the right
side of the button lights up.
Switch off automatic air distribution control temporarily – If the air quality sensor does not sw
itch on the air distribution control
automatically when there is a nausea
ting smell, you can switch it on
yourself by pressing the button *.
The warning light lights up in
the button on the left side.
Switching recirculated air mode off – Press the button or press the button repetitively, until the
warning lights in the button go out.
WARNING
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 acci- dent increases. Switch recirculated air mode off as soon as the windows begin misting up.
Note
•
If the windscreen mists up, press the button
⇒page 116, fig. 141
.
After the windscreen has been demisted, press the button .•
The automatic air distribution control operates only if the outside temperature
is higher than approx. 2°C.Controlling blower There are a total of seven blower stages available.The Climatronic system controls the bl
ower stages automatically in line
with the interior temperature. You
can also, however, adapt the blower
stages manually to suit your particular needs. – Press again the button on the left side (reduce blower speed) or on
the right side (increase blower speed).
If you switch off the blower, th
e Climatronic is switched off.
The set blower speed is displayed above the button when the respective number of warning lights come on.
AUTO
A1
AUTO
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Heating and air conditioning system
119
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
WARNING
•
“Stale air” may result in fatigue in the driver and occupants, reduce
attention levels and also cause the windows to mist up. The risk of having an accident increases.•
Do not switch the Climatronic system off for longer than necessary.
•
Switch the Climatronic system on as soon as the windows mist up.
Defrosting windscreenDefrosting windscreen - switching on – Press the button
⇒
page 116, fig. 141
.
Defrosting windscreen - switching off – Once again press the button or the button .The temperature control is controlled automa
tically. More air flows out of the air
outlet vents
1.
Auxiliary heating (auxiliary heating and ventilation)*Description and important information The auxiliary heating (auxiliary heating and ventilation) heats or supplies the interior of the vehicl
e with fresh air independent of the
engine.Auxiliary heating (auxiliary heating) The auxiliary heating (auxiliary heating) f
unctions in connection with the Climatic or
Climatronic. It can be used when stationa
ry, when engine is switched off for preheating of the
vehicle as well as while driving (only during the heating phase of the engine).
The auxiliary heating (auxiliary heating)
warms up the coolant during the combus-
tion of fuel from the vehicle tank. The coolant warms up the air, which (if the blower speed is not set to zero) flows into the occupant compartment. Auxiliary ventilation The auxiliary ventilation enables fresh air to flow into the vehicle interior by switching off the engine, whereby the interior temperature is effectively decreased (e.g. with the vehicle parked in the sun).
WARNING
•
The auxiliary heating must never be operated in closed rooms - risk of
poisoning!•
The auxiliary heating must not be running during refueling - risk of fire.
•
The exhaust pipe of the auxiliary heating is located on the underside of
the vehicle. Therefore do not place the
vehicle, if you wish to operate the
auxiliary heating, in su
ch a way that the exhaust gases of the auxiliary
heating can come easily into contact
with inflammable materials (e.g. dry
grass) or easily inflammable su
bstances (e.g. fuel run out).
Note
•
If the auxiliary heating runs, the fuel
consumption comes from the vehicle tank.
Therefore the auxiliary heating should not be operated, if there is very little fuel in the tank.•
The exhaust pipe of the auxiliary heating,
which is located on the underside of
the vehicle, must not be clogged and
the exhaust flow must not be blocked.
•
If the auxiliary heating and
ventilation is runni
ng, the vehicle battery discharges.
If the auxiliary heating and ventilation
has been operated several times over a
longer period, the vehicle must be driven a few kilometers in order to recharge the vehicle battery.•
The auxiliary heating only switches the bl
ower on, if it has achieved a coolant
temperature of approx. 50 °C.•
At low outside temperatures, this can result in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operating problem.
AUTO
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Heating and air conditioning system
120
•
After switching off the auxiliary heatin
g, the coolant pump runs for a short
period.•
The auxiliary heating and ventilation does not switch on or comes on, if the
vehicle battery indicates a low loading state.•
The auxiliary heating (auxiliary heating) does not switch on, if the following was
shown in the information display or before switching off the ignition:
Please refuel!
(Please refuel!)
.
•
The air inlet in front of the windscreen must be free of ice, snow or leaves in
order to ensure that the auxiliary heating operates properly.•
So that warm air can flow into the vehi
cle interior after switching on the auxil-
iary heating, you must maintain the te
mperature normally selected by you (we
recommend 22°C). It is recommended to
put the air flow in the position
.
•
On vehicles with DPF (diesel particle filter) the warm coolant heats up the
engine.Direct switching on/offThe auxiliary heating (auxiliary heating and ve
ntilation) can be switched on or off at
any time
directly
using the button on the operating part of the Climatic
⇒ fig. 142
or on the operating part of the Climatronic.
If the auxiliary heating and ventilation is not switched off earlier, it switches off automatically after the expiration of the set operating period, in the menu
Running
time
.
Using the system So that the auxiliary heating (auxiliary heating and ventilation) func- tions according to your expectations, it is necessary to carry out the basic setting before
its programming.
Basic setting – On the information display, select from the
Main menu
the menu
point
Aux. heating
.
– In the menu
Aux. heating (auxiliary heating)
⇒
fig. 143
select the
menu point
Weekday
and set the current day.
– Return to a higher level
by selecting the menu point
Back
, i. e. in the
menu
Aux. Heating (auxiliary heating)
.
– In the menu
Aux. Heating
select the menu point
Running time
and
set the desired operating period in steps of 5 minutes. The operating period can be 10 to 60 minutes.
Fig. 142 Button for direct switching on/off of the auxil-iary heating (auxiliary heating and ventilation) on the operating part of the Climatic
Fig. 143 Information display: Aux. heating
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121
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
– By selecting the menu point
Back
, you will reach in the menu
Aux. Heating (auxiliary heating)
.
– In the menu
Aux. heating (auxiliary heating)
select the menu point
Mode
.
– In the menu
Mode
select the desired mode
Heating
or
Ventilation
.
ProgrammingFor the programming of the auxiliary heating (auxiliary heating and ventilation) in the menu
Aux. heating (Aux. heating)
there are three pre-set times:
•
Pre-set time 1
•
Pre-set time 2
•
Pre-set time 3
In each pre-set time, the day and the ti
me (hour and minute) can be set for
switching on the auxiliary heating and/or ventilation. An empty position can be found between
Sunday and Monday when selecting the
day. If this empty position
is selected, the activation is performed without taking
into account the day. If you leave the pre-set menu by selecting the menu
Back
or do not operate the
display for longer than 10°seconds, the set values are stored, but the pre-set time is not active. Both other pre-set times can be prog
rammed and stored in the same way.
If you select the menu
Activate
after setting the desired values, appears on the
display
Pre-set time (weekday, hours, minute) activated! (Pre-set time
(weekday, hour, minute) activated!
and the set pre-set time is active.
Only one programmed pre-set time can be active.The last programmed pre-set time remains active.After the auxiliary heating activates at the set time, it is necessary to pre-set a time again.
Changing the active pre-set time is carried out after selecting the menu point Activate
in the menu
Aux. heating (auxiliary heating)
by selecting a pre-set time.
The prerequisite for the correct switching on of the auxiliary heating (auxiliary heating and ventilation) according to th
e programmed pre-set time is the correct
setting of the current time and the weekday
⇒page 120.
If the system is running, a warning light in
the button for direct switching on/off of
the auxiliary heating lights up. The running system deactivates after expirati
on of the operating period or is deac-
tivated earlier by pres
sing the button for direct swit
ching on/off of the auxiliary
heating
⇒page 120.
The random pre-set time can be deactivated by selecting the menu point
Deactive
in the menu
Activate
.
After selecting the menu point
Fa c t o r y s e t t i n g
in the menu
Aux. heating
(auxiliary heating)
, it is possible to change to the factory setting.
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Starting-off and Driving
123
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Ignition lockPetrol engines - ignition switched off, engine
off, the steering can be locked.
- ignition switched on - start engine Diesel engines - interruption of fuel supply, ignition sw
itched off, engine off, the steering can
be locked. - heating glow plugs on, ignition switched on•
You should not switch on any major elec
trical components during the heating
period otherwise the vehicle batter
y will be drained unnecessarily.
- start engine Applies to all models: Position
To lock the steering
, with the ignition key withdrawn, turn the steering wheel until
the steering locking pin is heard to engage.
You should always lock the steering as
a general rule if you leave your vehicle. This acts as a deterrent against possible theft of your vehicle
⇒
.
Position
Move the steering wheel back and forward a little if the ignition key cannot, or cannot easily be turned into
this position, in order to
release the steering lock.
Position
The engine is started in this position. At
the same time switched on low beam or
main beam or other electrical compon
ents with major po
wer consumption are
briefly switched off. The ignition key moves back into position when one releases the key. The ignition key must be turned back into
position each time before starting the
engine again. The starter repeat lock in th
e ignition lock prevents the starter being
engaged when the engine is running and thus getting damaged. Ignition key withdrawal lock (automatic gearbox) You can only withdraw the ignition key after switching off the ignition if the selector lever is in position
P.
WARNING
•
When driving, the ignition key must always be in the position (igni-
tion switched on) without the engine running. This position is indicated by the warning lights coming on. If this is not the case, it could result in unex- pected locking of the steering wheel - risk of accident!•
Only remove the ignition key from the ignition lock when the vehicle has
come to a standstill (by applying the handbrake or moving the selector lever into the position P). The steering lock
can engage immediately - risk of acci-
dent!•
Always withdraw the ignition key if
you are going to leave the vehicle,
even for a short time. This is particularly
important if children are left in the
vehicle. The children might otherwise star
t the engine or switch on electrical
equipment (e.g. power windows) - risk of accident or injury!
Fig. 146 Ignition lock posi- tions
A1A2A3A1A2A3
A1A2
A3
A2
A1
A2
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Starting-off and Driving
125
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
You should not switch on any major electrical components during the heating period otherwise the vehicle battery will be drained unnecessarily.•
You should start the engine immediately after the glow plug warning light
has gone out.•
The glow plug warning light will come on for about one second if the engine is
at a normal operating temperature or if th
e outside temperature is above +5°C. This
means that you can start the engine
right away
.
•
Interrupt the attempt at starting after 10 seconds if the engine does not start
right awayand wait for about 30 seconds before repeating the attempt.•
It is possible that the fuse on the diesel
preglow system is defect if the engine
still does not start. Check the fuse and replace it if necessary
⇒page 258.
•
Contact the nearest specialist garage to obtain professional assistance.
Starting the engine after the fuel tank has run dry It may take longer than normal to start the
engine after refuelling if the fuel tank has
run completely dry - up to one minute. This is because the fuel system must first of all be filled while the attempting to start the engine.Switching off the engine– The engine can be switched off by turning the ignition key from posi-
tion into
⇒
page 123, fig. 146
.
WARNING
•
Never switch off the engine before the
vehicle is stationary - risk of acci-
dent!•
The brake booster only operates when the engine is running. Greater
physical effort for braking is required
when engine is switched off. Because
if you do not stop as normal, this can cause an accident and severe injuries.
Caution
you should not switch the engine off right
away at the end of yo
ur journey
after the
engine has been operated for a lengthy peri
od at high loads but should be allowed
it to run at idling speed for about 2 minutes
. This prevents any accumulation of heat
when the engine is switched off.
Note
•
The radiator fan may conti
nue running for a further 10
minutes or
so after the
engine and the ignition have
been switched off. The coolant fan may, however, also
switch on again after some time if the
coolant temperature rises because of an
accumulation of heat in the engine or
if the engine is warm and the engine
compartment is additionally
heated by strong sunlight.
•
This is why particular care is required when carrying out any work in the engine
compartment
⇒page 225, “Working in the engine compartment”.
Shifting (manual gearbox)Shift into reverse only when the vehicle is
stationary. Depress the clutch pedal and
hold it fully depressed. Wait a moment be
fore engaging reverse gear in order to
avoid any shift noises.
A1
Fig. 147 The shift pattern: 5- speed or 6-speed manual gearbox
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Starting-off and Driving
126
The reversing lights will come on once reverse gear is engaged, provided the igni- tion is on.
WARNING
Never engage the reverse gear when driving - risk of accident!
Note
•
One should not lay the hand on the shift lever while driving the vehicle. The
pressure of the hand will be transferred to
the gearshift forks in the gearbox. This
can, over a period of time, lead to early wear of the gearshift forks.•
Depress the clutch pedal fully when chan
ging gears, in order to avoid unneces-
sary wear and damage to the clutch.HandbrakeApplying the handbrake – Pull the handbrake lever up fully.
Releasing the handbrake – Pull the handbrake lever up slightly
and
at the same time
press in the
locking button
⇒
fig. 148
.
– Hold the button pressed and push the handbrake lever down fully
⇒
.
The handbrake warning light
lights up when the handbrake is applied, provided
the ignition is on. A warning signal sounds and the following text appears in the display* if you have inadvertently driven off with the handbrake applied:
Handbrake on
The handbrake warning is activated 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 re
sult 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).
Fig. 148 Centre console: Handbrake
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Automatic gearbox
133
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Information for driving with the automatic gearbox DSG* The abbreviation DSG means 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 conventional automatic gearbox. Their shifting is matched in such a way that there are no jerks when shifting the gear and the power trans-mission of the engine to the front wheels is not interrupted. Shifting up and down through the gears is perf
ormed 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 136.
Starting-off and Driving – Depress the brake pedal fully and keep it depressed. – Press the Shiftlock button (button
in handle of the selector lever),
move the selector lever into the desired position, e.g. in
D, and then
release the Shiftlock button.
– Release the brake pedal and depress the accelerator
⇒
.
Stopping for a short time – The selector lever position
N does not have to be selected when stop-
ping just for a short time, such as at
a cross roads. It is absolutely suffi-
cient to hold the stopped vehicle stationary by depressing 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 124. At temperatures below -10 °C the engine can only be started in the selector lever position
P.
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 le
ver 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 neces-
sary to release pressure on the accelerato
r pedal and wait for idling speed of the
engine to be reached before engaging a drive position in the selector lever.
WARNING
•
Do not depress the accelerator when changing the position of the
selector lever if the car is stationary an
d the engine is running - risk of acci-
dent!•
Never move the selector lever into position R or P when driving - risk of
an accident!•
If you are stopping at a hill (downhill section), never try to hold the car
stationary with the gear engaged by me
ans of the “accelerator”, this means
by letting the clutch slip. This can lead
to overheating of the clutch. If there is
a risk of overheating of the clutch due
to overload, the clut
ch is opened auto-
matically and the vehicle rolls backward - risk of accident!•
If you must stop at a slope, depress and hold the brake pedal, so that you
can prevent the vehicle from rolling back.
Caution
•
The double clutch on the automatic gear
box DSG is equipped with an overload
protection. If you make use of
the uphill function on a vehi
cle which is stationary or
driving slowly uphill, it will result in an
increase of thermal stress of the clutches.
•
An overheating of the clutches can be detected by the flashing of the selector
level indicator and the “jerk” of the clutches, finally the clutches are opened. The power transmission from the engine to the front wheels is interrupted and as a
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