Air conditioning system117
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Defrosting windscreenDefrosting windscreen - switching on– Press the button page 114, fig. 122.Defrosting windscreen - switching off– Once again press the button or the button .
The temperature control is controlled automatically. 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) functions in connection with the Climatic or
Climatronic.
It can be used when stationary, when engi ne is switched off for preheating of the
vehicle as well as while driving (e.g. during the heating phase of the engine).
The engine is also preheated when the vehicle is stationary and the engine is switched
off, if the auxiliary heating is switched on. This is not valid for the engines 3.6 ltr./191 kW
FSI and 1.9 ltr./77 kW TDI.
The auxiliary heating (auxiliary heating) wa rms up the coolant during the combustion
of fuel from the vehicle tank. The coolant warms up the air, which (if the blower speed
is not set to zero) flows in to the occupant compartment.
Auxiliary ve ntilation
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 heatin g is located on the underside of the
vehicle. Therefore do not place the vehicle, if you wish to operate the auxiliary
heating, in such a way that the exhaust gases of the auxiliary heating can come
easily into contact with inflammable mate rials (e.g. dry grass) or easily inflam-
mable substances (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 th e exhaust flow must not be blocked.
If the auxiliary heating and ventilation is running, 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 ki lometers 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 qu ite normal and is not an operating problem.
After switching off the auxiliary heating, 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!
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.
AUTO
s3fg.2.book Page 117 Friday, April 30, 2010 12:17 PM
Starting-off and Driving123
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
WARNING
Never run the engine in non ventilated or enclosed areas. The exhaust gases
of the engine contain besides the odorless and colourless carbon monoxide a
poisonous gas - hazard! Carbon monoxide can cause unconsciousness and
death.
Never leave your vehicle unattended with the engine running.Caution
The starter may only be operated (ignitio n key position ), if the engine is not
running. If the starter is immedi ately operated after switching off the engine, the starter
or the engine can be damaged.
Avoid high engine revolutions, full throttle and high engine loads as long as the
engine has not yet reached its normal oper ating temperature - risk of damaging the
engine!
Vehicles which are fitted with an exhaust gas catalytic converter should not be tow-
started over a distance of more than 50 metres.For the sake of the environment
Never warm up the engine when the vehicle is standing. Drive off right away. Through
this the engine reaches its operating temperature more rapidly and the pollutant emis-
sions are lower.Petrol enginesThese engines are fitted with a starter system which selects the correct fuel-air mixture
for every external air temperature.
Do not operate accelerator before and when starting engine.
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 electric al fuel pump is defect if the engine still
does not start. Check the fuse and replace it if necessary page 246.
Contact the nearest specialist garage to obtain professional assistance. It may be necessary, if the engine is
very hot, to slightly depress the accelerator after
the engine has started.
Diesel enginesGlow plug system
Diesel engines are equipped with a glow plug system, the preglow period being
controlled automatically in line with the coolant temperature and outside tempera-
ture.
The preglow indicator light
comes on after the ignition has been switched on.
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 the 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 246.
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 tu rning the ignition key into position
page 121, fig. 126.
A3
A1
s3fg.2.book Page 123 Friday, April 30, 2010 12:17 PM
Fuel
214WARNING
Pay attention to any legal requirements if you do carry a spare canister in the
vehicle. We do not recommend carrying any fuel canisters in your vehicle for
safety reasons. The canister can be damaged in the event of an accident and fuel
may leak out.
Caution
Before refuelling it is necessary to switch off the auxiliary heating system (auxiliary
heating and ventilation) *.
Remove any fuel which has spilled onto th e paintwork of your vehicle immediately
- risk of paint damage!
On vehicles fitted with a catalytic converte r, never let the fuel tank run completely
empty. An irregular supply of fuel to the engine can result in misfiring and unburnt fuel
may get into the exhaust system, which may result in overheating and damage to the
catalytic converter.
Make sure that the valve is not pressed into the filler tube when inserting the pump
nozzle into the filler tube. Otherwise you are unintentiona lly filling up the volume,
which in case of heat can cause an expansion of the fuel. This can lead to an overflow
of fuel or damage to parts of the fuel reservoir.
The fuel tank is full just as soon as th e pump nozzle switches off for the first time,
provided the nozzle has been operated prop erly. Do not continue refuelling - other-
wise the expansion volume is filled up.Note
The fuel tank has a capacity of about 60 litres, containing a reserve of 10.5 litres.s3fg.2.book Page 214 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs249
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Certain electrical components are only standard on certain vehicle model versions or
only suppliable as optional
equipment for certain models.
Fuse assignment in the dash panelCertain electrical components are only stan dard on certain vehicle model versions or
only suppliable as optional equipment for certain models.
No.
Power consumer
Amperes
F1
Not assigned
F2
Control unit for automatic gearbox DQ200
30
F3
Measuring circuit
5
F4
Va lve s for AB S
30/20
F5
Control unit for automatic gearbox DQ250
15
F6
Instrument cluster, windshield wiper lever and turn signal
light lever
5
F7
Power supply for terminal 15 (ignition on)
40
F8
Radio
15
F9
Phone
5
F10
Engine control unit, Main relay
5/10
F11
Control unit for auxiliary heating
20
F12
Control unit for CAN databus
5
F13
Engine control unit
15/20/30
F14
Ignition
20
F15
Lambda probe (petrol engine)
Glow plug system relay and fuel pump (diesel engine)
10
5
F16
Front right main headlight, right rear light unit
30
F17
Horn
15
F18
Audio amplifier (sound system)
30
F19
Front window wiper
30
F20
Va lve for f uel d osi ng
water pump
20
10
F21
Lambda probe
10/15/20
F22
Clutch pedal switch
5
F23
Relay
Valves
High pressure pump
5
10
15
F24
The radiator fan
10
F25
Pump for ABS
30/40
F26
Left main headlight
30
F27
Control unit for glow plug system
40/50
F28
Windscreen heater
50
F29
Accessory equipment
50
F30
Power supply relay - terminal X
a)
50
a)In order not to drain the battery unnecessarily wh en starting the engine, the electrical compo-
nents of this terminal are automatically switched off.No.
Power consumer
Amperes
Fig. 209 Schematic representation of
the fuse carrier in the dash panel
s3fg.2.book Page 249 Friday, April 30, 2010 12:17 PM
Fuses and light bulbs
250No.
Power consumer
Amperes
1
Diagnostic socket, engine control unit, fuel pump relay,
fuel pump control unit
7,5
2
Control unit for ABS, ESP, switch for tyre air pressure con-
trol, brake sensor
5
3
Switch and control unit for airbag
5
4
WIV, parking light, dimming mirrors, pressure sensor, tele-
phone preinstallation
5
5
Control unit for headlamp beam adjustment and head-
light swivel, control unit for parking aid, control unit for
park assist
5
6
Instrument cluster, control unit for electromechanical
power steering, Haldex, selector lever lock, power supply
for data bus
5
7
Valve heating, air mass meter
10
8
Control unit for trailer detection
5
9
Relay for auxiliary heating
5
10
Adaptive left main headlight
10
11
Adaptive right main headlight
10
12
Not assigned
13
Diagnostic socket, light switch, rain sensor, clock
7,5
14
Central locking system and bonnet lid
15
15
Central control unit - interior lights
7,5
16
Air conditioning system
7,5
17
Not assigned
18
Not assigned
19
Not assigned
20
KESSY
5
21
KESSY ELV
7,5
22
Air blower for Climatronic
40
23
Front power window, central locking of the front doors
30
24
Selector lever lock
5
25
Rear window heater, relay for auxiliary heating and venti-
lation
30
26
Power socket in the luggage compartment
25
27
Fuel pump relay,
Fuel pump relay, control unit for fuel pump, injection
valves
15
20
28
Electric boot lid
30
29
Preparation for the aftermarket radio
5
30
Not assigned
31
Not assigned
32
Front power window, central locking system of the rear
doors
30
33
Electric sliding/tilting roof
25
34
Alarm, spare horn
5
35
front and rear lighter
25
36
Headlight cleaning system
20
37
Front seat heating
20
38
Heated rear seats
20
39
Not assigned
40
Fan air-conditioning system, re lay for auxiliary heating and
ventilation
40
41
Rear window wiper
10
42
Light switch
5
No.
Power consumer
Amperes
s3fg.2.book Page 250 Friday, April 30, 2010 12:17 PM