key battery AUDI A5 2008 8T / 1.G Owners Manual

Contents3
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Airbag system
. . . . . . . . . . . . . . . . .
Description of airbag system . . . .
Front airbags . . . . . . . . . . . . . . . . . .
Side airbags . . . . . . . . . . . . . . . . . . .
Head-protection airbags
(sideguard) . . . . . . . . . . . . . . . . . . . .
Deactivating the front passenger's
airbag via the key-operated switch
Child safety
. . . . . . . . . . . . . . . . . . . .
Points to remember if children are
travelling in the car . . . . . . . . . . . . .
Child safety seats . . . . . . . . . . . . . .
Fitting child safety seats . . . . . . . .
Driving tips
. . . . . . . . . . . . . . . .
Intelligent technology
. . . . . . . . . .
Electronic stabilisation program
(ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes . . . . . . . . . . . . . . . . . . . . . . . .
Power steering (servotronic) . . . . .
Four-wheel drive (quattro®) . . . . . .
Power management . . . . . . . . . . . .
Your vehicle and the
environment
. . . . . . . . . . . . . . . . . . .
Running in . . . . . . . . . . . . . . . . . . . .
Emission control systems . . . . . . .
Driving abroad . . . . . . . . . . . . . . . . .
How to improve economy and
minimise pollution . . . . . . . . . . . . .
Environmental compatibility . . . . .
Towing a trailer
. . . . . . . . . . . . . . . .
Driving the vehicle with a trailer or
caravan . . . . . . . . . . . . . . . . . . . . . . .
Removable towing bracket . . . . . .
General maintenance
. .
Care of vehicle and cleaning
. . .
General notes . . . . . . . . . . . . . . . . . .
Care of exterior . . . . . . . . . . . . . . . . .
Care of interior . . . . . . . . . . . . . . . . .
Fuel and filling the tank
. . . . . . . .
Petrol . . . . . . . . . . . . . . . . . . . . . . . . .
Diesel . . . . . . . . . . . . . . . . . . . . . . . . .
Filling the tank . . . . . . . . . . . . . . . . .
Checking and topping up fluidsBonnet . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment layout . . . . .
Engine oil . . . . . . . . . . . . . . . . . . . . . .
Cooling system . . . . . . . . . . . . . . . . .
Brake fluid . . . . . . . . . . . . . . . . . . . . .
Battery . . . . . . . . . . . . . . . . . . . . . . . .
Windscreen washer . . . . . . . . . . . . . Wheels and tyres
. . . . . . . . . . . . . . .
Wheels . . . . . . . . . . . . . . . . . . . . . . . .
Accessories and modifications
to the vehicle
. . . . . . . . . . . . . . . . . . .
Accessories and replacement
parts . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifications . . . . . . . . . . . . . . . . . .
Radio transmitters and business
equipment . . . . . . . . . . . . . . . . . . . . .
Self-help
. . . . . . . . . . . . . . . . . . . . .
Self-help
. . . . . . . . . . . . . . . . . . . . . . . .
Warning triangle . . . . . . . . . . . . . . . .
First-aid kit . . . . . . . . . . . . . . . . . . . . .
Fire extinguisher . . . . . . . . . . . . . . . .
To o l s a n d T y r e M o b i l i t y S y s t e m . . .
Compact temporary spare wheel*
Tyre repairs . . . . . . . . . . . . . . . . . . . .
Changing a wheel . . . . . . . . . . . . . .
Jump-starting . . . . . . . . . . . . . . . . . .
Tow-starting and towing away . . .
Fuses and bulbs
. . . . . . . . . . . . . . . .
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing bulbs for headlights . . .
Changing bulb for turn signals . . .
Changing bulb for side lights . . . . .
Changing bulb for front fog lights
Changing bulbs for rear lights in
side panel . . . . . . . . . . . . . . . . . . . . . .
Changing bulbs in boot lid . . . . . . .
Number plate light . . . . . . . . . . . . . . 176
176
178
180
181
183
185
185
186
189
195
196
196
199
201
201
202
205
205
205
205
206
207208
208
211
219
220
220
220
223
227
227
227
228
230
230
232
233
235
238
239
242
243
243250
250
250
251
253
254
254
254
255
255
256
257
260
265
267
272
272
276
278
282
282
283
284
286
288
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Driver information system35
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Note
On some models the speed limit warning 1
 and speed limit
warning 2
 will also be displayed as yellow symbols. These always
appear as a small symbol at the top of the display ⇒page 28.
Applies to vehicles: with advanced keyKey not in vehicle

 Key not in vehicle
This message will appear together with the symbol
 if the remote
control key is removed from the vehicle while the engine is running.
This is to remind you not to continue driving without the key (for
example if you change drivers).
If the remote control key is not in the vehicle you will not be able to
switch on the ignition or restart the engine after it has been
switched off. You will also not be able to lock the vehicle from the
outside.
Light sensor/ rain sensor defective

 Automatic headlights/ automatic wipers defective
If the  symbol appears, this means that the light sensor/ rain
sensor is not functioning. For safety reasons, the dipped beam
headlights will then be switched on permanently when the light
switch is set to the AUTO position. However, you can still switch the
lights on and off in the normal way with the light switch. If the rain
sensor is defective, the functions operated via the windscreen wiper
lever will still be available. You should have the light sensor/ rain
sensor checked by a qualified workshop as soon as possible.

Brake pads worn
⇒page 36

Battery power*
⇒page 36

Bulb monitor*
Bulb failure*
⇒page 36

Check engine oil level
⇒page 37

Engine oil sensor defective
⇒page 37

Fuel level low
⇒page 36

Washer fluid level low*
⇒page 36

advanced key*
Key not in vehicle
⇒page 35

Light sensor/ rain sensor defec-
tive
⇒page 35

Diesel particulate filter*
obstructed
⇒page 37

Dynamic headlight range con-
trol* defective
⇒page 37

Battery in remote control key
⇒page 40

Electro-mechanical
parking brake
⇒page 123

adaptive light* defective
⇒page 37

Ignition lock defective
⇒page 37

Windscreen wiper defective
⇒page 38
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Doors and windows 40
WARNING
•
Always switch off the ignition and take the key with you when
leaving the vehicle - even if you only intend to be gone for a short
time. This is especially important if children are left in the car. They
might otherwise be able to start the engine or use power-operated
equipment such as the electric windows - this could lead to inju-
ries.
•
Wait for the vehicle to come to a standstill before removing the
ignition key from the lock. Otherwise the steering lock could
engage suddenly, causing an accident.Note
The function of the remote control key may be impaired by interfer-
ence from other nearby radio signals (for example from a mobile
telephone or TV transmitter) if these are in the same frequency
range.Indicator lamp on remote control key
The indicator lamp on the remote control key lights up
when you press the buttons.
The indicator lamp should light up once briefly when you press one
of the buttons briefly. The indicator lamp should flash when you
press and hold one of the buttons (convenience open/close).
If the indicator lamp does not light up, this means the battery is
exhausted and must be replaced ⇒page 40. The instrument cluster
display also shows the symbol
 and the following message if the
battery is exhausted:
Please change key battery
Replacing the battery for the remote control key– Press the release button ⇒fig. 29.
Fig. 28 Indicator lamp
on remote control key
Fig. 29 Remote control
key: Removing the
emergency keyFig. 30 Remote control
key: Removing the
battery carrier
AA
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Doors and windows41
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
– Pull the emergency key out of the remote control key.
– Press the release catch ⇒page 40, fig. 30 on the
battery carrier and at the same time pull the battery
carrier out of the remote control key in the direction of
the arrow.
– Insert the new CR 2032 battery with the “+” symbol
facing downwards.
– Slide the battery carrier carefully into the remote control
key.
– Insert the emergency key.
For the sake of the environmentUsed batteries must be disposed of appropriately and must not be
discarded with ordinary household waste.
Note
The new battery must be of the same type as the original one
(CR 2032).Removing the emergency key
– Press the release button ⇒fig. 31.
– Pull the emergency key out of the remote control key.You can use the emergency key to ...•
activate and deactivate* the front passenger's airbag
⇒page 183.
•
lock and unlock* the front passenger's storage compartment
⇒page 91.
•
lock and unlock the lockable rear seat ⇒page 82.
•
manually lock and unlock the vehicle if this is not possible using
the remote control key ⇒page 46.
Emergency release for ignition key
In the event of a malfunction in the vehicle's electrical
system, it may no longer be possible to remove the igni-
tion key.If you are not able to remove the ignition key because the
vehicle battery has discharged (for example), remove the
key as follows:
ABAA
Fig. 31 Remote control
key: Removing the
emergency key
AAAB
Fig. 32 Ignition lock
with key
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Doors and windows 46
NotePlease note the following points if the vehicle is left parked for long
periods:•
To save electrical power, the proximity sensors are switched off
after a few days. You will then need to pull the door handle once to
unlock the vehicle, and a second time to open it.
•
To prevent the battery from becoming discharged and thus
maintain the vehicle's starting ability for as long as possible, the
power management system will gradually switch off convenience
functions that are not required. In this case you may not be able to
unlock the vehicle with this convenience function.
Locking and unlocking the vehicle using the key
If the central locking system should fail to work, you can
still lock and unlock the driver's door by turning the emer-
gency key or spare key in the lock.Unlocking
– Turn the key to position ⇒fig. 38 to unlock the
vehicle.Locking
–Turn the key once to position ⇒ to lock the vehicle.
– If you turn the key to position a second time within 2
seconds, this will lock the vehicle without activating the
deadlock mechanism.
In order to switch off the anti-theft alarm*, you must switch on the
ignition within 15 seconds after opening the driver's door. Other-
wise the alarm will be triggered.
WARNING
Do not leave anyone (especially children) in the car if it is locked
from the outside and the deadlock mechanism is activated: the
doors and windows cannot then be opened from the inside.
Locked doors could delay assistance in an emergency, potentially
putting lives at risk.
Note
•
The central locking switch and the release button for the boot lid

will function after the ignition is switched on.
•
If the vehicle is locked with the key when the central locking
system is operational, it is only possible to unlock all the doors and
the boot lid centrally with the key within the next 45 seconds. After
this period, the key will only unlock the driver's door.
Fig. 38 Lock on
driver's door
AA
ABAB
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Doors and windows51
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Convenience open function
– Press and hold the unlocking button
 on the remote
control key until all the windows have reached the
desired position and the tilting panorama roof* is open.
Convenience close function
– Press and hold the locking button
 on the remote
control key until the windows and the tilting panorama
roof* are closed ⇒.
Convenience close function with advanced key*
– Touch and keep your hand in contact with the locking
sensor on the door handle until the windows and the
tilting panorama roof* are closed.
The electric blind is opened and closed together with the tilting
panorama roof*.
WARNING
•
Take care when closing the windows and the tilting panorama
roof*. Careless or uncontrolled use can cause injuries.
•
For safety reasons, you should only use the remote control
open and close functions within about 2 metres of the vehicle. To
avoid injuries, always keep an eye on the windows when pressing
the button to close them. The windows and panorama roof stop
moving as soon as the button is released.
Settings for convenience open function
The driver can use the sound system or MMI* to select
which windows are opened.– Select: Function selector button > Windows >
Convenience open.If you wish to use the convenience open function for the windows
and the tilting panorama roof*, select on for the functions Front
windows and Sunroof*.What to do after a malfunction
The one-touch open and close function must be reacti-
vated if the battery has been disconnected.– Pull and hold the electric window switch until the
window is fully closed.
– Release the switch and then pull it again for at least one
second.
Fig. 46 MMI display:
Convenience open
menu
CAR
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Lights and vision 60Interior lightsFront interior lights
The front interior lighting also incorporates the reading
lights for the driver and passenger.The rocker switch ⇒fig. 58 for the interior light has the
following functions:
Courtesy light position
– Move switch to the centre position.Interior light switched on
– Move switch to position I.
Interior light switched off
– Move switch to position O.
Front reading lights

– Press one of the switches ⇒fig. 59 to switch the left
or right reading light on and off.If you switch on the courtesy lighting, the interior lights come on
automatically when the vehicle is unlocked or the doors are opened.
The light also comes on when the key is pulled out of the ignition. It
goes out approximately 30 seconds after the doors are closed. The
interior light is switched off immediately when the vehicle is locked
or when the ignition is switched on.
If a door is left open, the light is switched off after about 10 minutes
to prevent the battery from running flat.
The brightness of the light is automatically adjusted by a dimmer
when it is switched on.Rear interior lights
Reading lights are also provided for rear passengers.
Fig. 58 Headliner:
Front interior lightsFig. 59 Headliner:
Front reading lights
AA
AA
AAAA
AB
Fig. 60 Headliner: Rear
reading lights
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Seats and storage 88The cigarette lighter employs a standard 12 Volt socket which can
also be used as a power source for electrical appliances. The appli-
ances connected to the socket must not exceed a power rating of
100 W.
WARNING
•
Take care when using the cigarette lighter. Carelessness or
negligence when using the cigarette lighter can cause burns.
•
The cigarette lighter also works when the ignition is off and
when the ignition key is removed. To avoid the risk of fire, never
leave children unsupervised in the vehicle.
•
The electrical sockets and any appliances connected to them
will operate only when the ignition is switched on. Improper use
of the electrical sockets or the appliances connected to them can
cause injuries or fire. To avoid the risk of injury, never leave chil-
dren unsupervised in the vehicle with the key.Caution
Always use the correct type of plugs to avoid damaging the sockets.
Note
Using electrical appliances with the engine switched off will drain
the battery.
Applies to vehicles: with 12 Volt sockets12 Volt sockets
Electrical equipment can be connected to both 12 Volt
sockets.Electrical socket in luggage compartment and
front centre console
– Open the cover cap concealing the socket ⇒fig. 101.
– Insert the plug of the electrical appliance into the socket.
Electrical socket in rear centre console
– Fold up the lid ⇒page 89, fig. 103 to access the socket.
Fig. 101 Detail of the
side trim in the
luggage compartment:
12 Volt socketFig. 102 Electrical
socket in the centre
console
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Seats and storage89
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
– Insert the plug of the electrical appliance into the socket.Electrical equipment can be connected to the 12 Volt socket. The
appliances connected to the socket must not exceed a power rating
of 100 W.
WARNING
The electrical sockets and any appliances connected to them will
operate only when the ignition is switched on. Improper use of the
electrical sockets or the appliances connected to them can cause
injuries or fire. To avoid the risk of injury, never leave children
unsupervised in the vehicle with the key.
Caution
•
To avoid damage to the vehicle's electrical system, never
connect equipment that generates electrical current, such as a solar
panel or battery charger, to the 12 Volt sockets or cigarette lighter in
order to charge the vehicle's battery.
•
Use only equipment which has been tested for electromagnetic
compatibility in compliance with EC Directive 2004/104/EC.Note
Using electrical appliances with the engine switched off will drain
the battery.
Applies to vehicles: with 230 Volt Euro socketOn-board 230 Volt Euro socketElectrical equipment can be connected to the 230 Volt
Euro socket in the rear centre console.The 230 Volt Euro socket can only be used when the engine
is running ⇒.
– Fold up the lid to access the socket.
– Plug the Euro connector into the socket. This will auto-
matically release the child safety device.LED in electrical socket
Appliances suitable for connection
Electrical equipment with a Euro plug connector can be connected
to the 230 Volt Euro socket. The appliances connected to the
230 Volt Euro socket must not exceed a power rating of 150 W
(300 W peak power).Steady green light:
The socket is ready for use.
Flashing red light:
The socket has tripped out due
to a power surge, overheating or
similar
Fig. 103 Rear centre
console: 230 Volt Euro
socket
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Heating and cooling93
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Heating and coolingDeluxe automatic air conditionerApplies to vehicles: with deluxe automatic air conditionerDescription
The air conditioner can be used to set a comfortable inte-
rior temperature in the vehicle.The air conditioner provides heating and ventilation and also cools
and dehumidifies the air inside the vehicle.
The air conditioner is fully automatic and will maintain the desired
temperature at a constant level. To achieve this, the temperature of
the air supplied to the interior, the blower speed (volume of air
delivery) and the air distribution are regulated automatically. The
system also allows for the effect of strong sunlight, so there is no
need for manual adjustment. For these reasons it is advisable to use
the automatic mode for the comfort of all the passengers in virtually
all conditions throughout the year ⇒page 95.
Please note:
The humidity of the air is automatically reduced when the system
cools the interior of the vehicle. This helps to prevent condensation
on the windows.
If the humidity and temperature outside the vehicle are high,
condensation can drip off the evaporator in the air cooling system
and form a pool underneath the vehicle. This is normal and does not
indicate a leak.
If the outside temperature is low, the blower normally only switches
to a higher speed once the coolant has warmed up sufficiently (this
does not apply to the defrost setting).
In order to achieve maximum engine power, the air conditioner
compressor is temporarily switched off when pulling away from a
standstill with full throttle.The compressor also switches off if the coolant temperature is
excessively high, to ensure adequate engine cooling under extreme
loads.
Pollution filter
The pollution filter (a particle filter) serves as a barrier against impu-
rities in the outside air, including dust and pollen, and odours. The
air is also filtered when the air recirculation mode is activated.
For the air conditioner to work with maximum efficiency, the pollu-
tion filter element must be replaced at the intervals specified in the
Service Schedule.
If the vehicle is driven in areas with a high level of air pollution and
the filter is no longer fully effective, it may be necessary to change
the filter element more frequently.
Key-coded settings
The currently selected air conditioner settings are automatically
stored and assigned to the remote control key.
Power management
To prevent the battery from becoming discharged and to maintain
the necessary power level, the system will temporarily shut off the
electrical components that are using a lot of power, or reduce the
current they are consuming ⇒page 202. Heating systems in partic-
ular use a large amount of electrical power. If you notice, for
instance, that the rear window heater is not working, it may have
been temporarily switched off by the power management function,
or regulated to a lower heat output. These systems will be available
again as soon as sufficient electrical power is available.
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