technical data AUDI A5 2008 8T / 1.G User Guide
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Driver information system23
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Driving tips
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Technical data
Door catches / boot lid warning
The pictogram shows whether the doors and the boot lid, 
etc. are properly closed when driving off.The door catches/boot lid warning symbol lights up if one or more 
of the doors, or the bonnet or boot lid are not properly closed when 
the ignition is on. The symbol also indicates which of these is not 
properly closed ⇒fig. 14.
The warning symbol disappears when all the doors, the bonnet and 
the boot lid are completely closed, and the driver information func-
tions selected will then be displayed again.
Service interval display
This display reminds the driver when the next routine 
service is due and is called up using the MMI or the sound 
system control console.The date when the next service is due is calculated automat-
ically and the driver is reminded accordingly.
Service reminder
– When the next service date is approaching, SERVICE IN -
---- KM --- DAYS ⇒fig. 16 will be shown in the display 
each time you switch on the ignition.
Fig. 14  Display: Door 
catches/boot lid 
warning
Fig. 15  MMI display: 
Service interval displa
y
Fig. 16  Instrument 
cluster display: Service 
interval display
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Technical data
On-board computerApplies to vehicles: with on-board computerIntroduction
The on-board computer provides you with useful informa-
tion during a journey, including average and current fuel 
consumption, average speed, fuel range and driving time.The following items of information are processed by the on-board 
computer and can be shown one after the other on the display in the 
instrument cluster.Fuel range
The estimated fuel range is displayed in km. It shows how far the 
vehicle can be driven with the amount of fuel left in the tank, 
assuming the same style of driving. The fuel range is displayed in 
increments of 10 km.
The fuel range is calculated on the basis of the fuel consumption 
over the last 30 kilometres. The fuel range will increase accordingly 
if you drive in a more economical manner.
Average fuel consumption
This mode displays the average fuel consumption since the memory 
was last cancelled in litres/100 km. If required, you can use this 
display to adjust your driving style to achieve the desired fuel 
consumption.
Current fuel consumption
The display shows the current fuel consumption in litres/100 km. If 
required, you can use this display to adjust your driving style to 
achieve the desired fuel consumption.
The computer calculates the fuel consumption every 30 metres. The 
display switches to l/h (litres per hour) when the vehicle is 
stationary.
Average speed
This mode shows the average speed driven since the memory was 
last cancelled (in km/h).
Driving time
This display shows the period of time which has elapsed since the 
memory was last cancelled.
Distance covered
This display shows the distance you have covered since the memory 
was last cancelled.
Fig. 17  On-board 
computer: Fuel rangeFig. 18  On-board 
computer: Average fuel 
consumption
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Driver information system27
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Technical data eter and navigation system*. Press the Reset button   briefly to 
switch back and forward between these displays.
Resetting figures to zero
To cancel one of the computer readings individually, select the 
required function and press the RESET button   for at least one 
second. The following values can be reset to zero individually using 
the Reset button:
•
Average fuel consumption
•
Average speed
•
Driving time
•
Distance covered
You can also cancel all the values in the single journey memory or 
the total journey memory at the same time ⇒page 27.Note
The information in the memory is cancelled if the battery is 
disconnected.
Applies to vehicles: with on-board computerBasic settings for the on-board computer
You can change the basic settings for the on-board 
computer on the MMI* or on the sound system control 
console.– Select: Function selector button   > Instrument 
cluster > On-board computer 1 or On-board computer 2.You can zero all the values in the single journey memory or the total 
journey memory at the same time by selecting the Reset menu item.
You can also define which items of information you wish to have 
displayed by the on-board computer. If one of these items is 
switched off, it will not appear in the display. However, the corre-
sponding figures will still be registered by the on-board computer 
and can be switched back on at any time so that they again appear 
in the display.
AB
AB
Fig. 21  MMI display: 
On-board computer
CAR
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Technical data
Clearing speed limit
– Drive the vehicle at a minimum of 5 km/h.
– Press the   button for at least 2 seconds.The speed warning symbol 
 lights up briefly in the display to 
confirm that the selected speed has been stored. The speed limit 
that has been set remains stored until another speed is set with a 
brief push of the button, or until the memory is cleared with a long 
push of the button.
When the speed limit has been cleared, the display will show a 
crossed-out warning symbol .
Applies to vehicles: with speed warning functionSetting speed limit warning 2
You can use the MMI* or sound system control console to 
set, alter or cancel speed limit warning 2.– Select: Function selector button   > Instrument 
cluster > Speed warning.•
Speed warning on/off - to activate or deactivate the speed 
warning function ⇒fig. 23.
•
Speed warning - to set the speed above which a warning signal 
will sound.
Speed limit warning 2 can be adjusted in increments of 10 km/h 
between 30 and 240 km/h.
Auto-check controlIntroductionThe auto-check control checks important components and vehicle 
systems. These background checks are run constantly, as long as 
the ignition is switched on.
A message is displayed in the instrument cluster if a fault should 
occur or if any maintenance or repairs are urgently required. This is 
accompanied by an audible warning signal. Depending on the 
priority of the fault, a red or yellow warning symbol lights up in the 
display.
The red symbols indicate a serious malfunction, whereas the yellow 
ones represent other malfunctions or items requiring attention. 
Additional messages to assist the driver may be shown with the red 
or yellow symbols.
Automatic gearbox* function test
The auto-check control automatically checks the vehicle systems 
when the ignition is switched on. If the selector lever is in position 
P or N, the following instruction will appear:
When stationary apply footbrake while selecting gear
When a gear (R, D etc.) is selected, this message disappears and the 
auto-check control function is displayed.
The driver message will disappear 30 seconds after switching on 
the ignition or earlier, if there are other driver messages or malfunc-
tions.
SET
Fig. 23  MMI display: 
Setting speed limit 
warning 2
CAR
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– Switch off the engine.
– Check the function displayed. Obtain professional assist-
ance if necessary.The red symbols indicate a Priority 1 fault (serious malfunction).
Should a Priority 1 fault occur, a red warning symbol will appear at 
the top of the display ⇒page 30, fig. 25. The symbol is accompa-
nied by a driver message giving you more information about the 
fault. This symbol is accompanied by three warning chimes. The 
symbol will keep flashing until the fault is corrected.
If several Priority 1 faults are detected at the same time, the symbols 
are displayed one after the other for about 2 seconds at a time.
This message will disappear after about 5 seconds, but you can call 
it up again at any time by pressing the   button ⇒page 30.Alternator fault 
If the symbol 
 flashes in the instrument cluster display, there is an 
alternator fault or a fault in the vehicle's electrical system. In addi-
tion, a message will appear. This message will disappear after about 5 seconds, but you can call it up again at any time by pressing the 
 button.
You should normally be able to drive to the next available qualified 
workshop. However, you should avoid using electrical equipment 
that is not absolutely necessary because this will drain the battery.
Caution
If the coolant warning lamp 
 in the instrument display lights up 
as well as the alternator warning lamp while driving ⇒page 32, stop 
the vehicle immediately and switch off the engine. In this case the 
coolant pump is no longer being driven, and there is a risk of engine 
damage.
Fault in the brake system 
A fault in the brake system should be corrected as soon as 
possible.If the symbol 
 flashes in the display, there is a fault in the 
brake system. The symbol is accompanied by a driver 
message giving you more information about the fault. This 
message will disappear after about 5 seconds, but you can 
call it up again at any time by pressing the   button:
Stop vehicle and check brake fluid level
– Stop the vehicle.
– Check the brake fluid level ⇒page 238.
– Obtain professional assistance if necessary.
Warning! Fault in ABS brake system. Contact 
workshop
– Drive carefully to the nearest qualified workshop and 
have the fault rectified ⇒.
Alternator fault
⇒page 31
Fault in brake system/ parking 
brake
⇒page 31
Coolant level too low / coolant 
temperature too high
⇒page 32
Engine oil pressure too low
⇒page 33
Fault in the steering system
⇒page 33
Ignition lock defective
⇒page 34
SET
SET
SET
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WARNING
•
If your vehicle should break down for technical reasons, stop it 
at a safe distance away from moving traffic, switch off the engine 
and turn on the hazard warning lights ⇒page 58, “Hazard 
warning lights ”.
•
Never open the bonnet if you can see or hear steam or coolant 
escaping from the engine compartment; there is a risk of being 
scalded. Wait until you can no longer see or hear escaping steam 
or coolant.
•
The engine compartment of any motor vehicle is a dangerous 
place. Before carrying out any work in the engine compartment, 
switch off the engine and allow it to cool down. Please observe the 
important safety warnings ⇒page 231, “Working on components 
in the engine compartment”.Caution
Do not drive on if the symbol 
 has come on to indicate a fault in 
the cooling system, otherwise there is a risk of damaging the 
engine.
Engine oil pressure too low 
If the engine oil pressure is too low the fault must be recti-
fied immediately.If the 
 symbol flashes in the display, the oil pressure is 
too low. The symbol is accompanied by a driver message 
giving you more information about the fault. This message 
will disappear after about 5 seconds, but you can call it up 
again at any time by pressing the   button:
Switch off engine and check oil level
–Stop the vehicle.– Switch off the engine.
– Check the engine oil level ⇒page 234.
– Obtain professional assistance if necessary.
If the engine oil level is too low
If the engine oil level is too low, add more oil ⇒page 234.
If the engine oil level is correct
If the 
 symbol flashes and the engine oil level is correct, obtain 
professional assistance. Do not drive on. Do not continue to run the 
engine, not even at idle speed.
Note
The oil pressure warning lamp 
 is not an indicator for the oil 
level. The oil level should therefore be checked regularly.
Fault in the steering system 
The steering wheel cannot be unlocked if there is a fault 
in the electronic steering lock.If the symbol 
 flashes in the display, there is a malfunc-
tion in the electronic steering lock. The symbol is accompa-
nied by a driver message giving you more information 
about the fault. This message will disappear after about 
5 seconds, but you can call it up again at any time by 
pressing the   button:
Do not drive vehicle. Steering defective
– You should obtain professional assistance.
–Do not have the vehicle towed away.
SET
SET
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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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Technical data Message comes on and does not go out
If the message appears in the display after the ignition is switched 
on or while driving, and does not go out again, the battery is not 
being maintained at the proper power level. Starting reliability may 
be impaired. You should have the battery checked by a qualified 
workshop as soon as possible.
Check engine oil level 
 Please check oil level
If the  symbol lights up, check the engine oil level as soon as 
possible ⇒page 234. Top up the oil at the next opportunity 
⇒page 234.
Engine oil sensor defective 
 Oil level ! Sensor defective
If the 
 symbol lights up, take the vehicle to a qualified workshop 
and have the oil level sensor checked. Until then it is advisable to 
check the oil level every time you fill up with fuel ⇒page 234.
Applies to vehicles: with diesel engine and diesel particulate filterDiesel particulate filter obstructed 
 Particle filter. See Owner's Manual
When the symbol 
 lights up you can assist the self-cleaning func-
tion of the filter by driving accordingly. You should drive at a speed 
of at least 60 km/h (engine speed about 2,000 rpm) for about 
15 minutes in 4th or 5th gear, or with the selector lever in position S 
on vehicles with automatic gearbox*. As a result of the increase in 
temperature the soot in the filter will be burned off. The symbol will 
disappear once the cleaning process has been completed success-
fully.If the symbol 
 does not go out, please contact a qualified work-
shop and have the fault rectified.
For further information on the diesel particulate filter ⇒page 205.
WARNING
It is essential that you adjust your speed to suit the weather, road, 
terrain and traffic conditions. The recommended driving speed 
must never lead to the driver disregarding the traffic regulations.Applies to vehicles:  with dynamic headlight range controlHeadlight range control defective 
 Headlight range control defective
This symbol 
 indicates a malfunction in the dynamic headlight 
range control. Take the vehicle to a qualified workshop to have the 
dynamic headlight range control function repaired.
Applies to vehicles:  with adaptive lightadaptive light defective 
 adaptive light defective
This symbol 
 indicates that the adaptive light is defective. Take 
the vehicle to a qualified workshop to have the headlights and/or 
the control unit for the adaptive light repaired.
Ignition lock defective 
 Ignition lock defective
If the symbol 
 lights up in the display, there is a malfunction in 
the electronic ignition lock. Take the vehicle to a qualified workshop 
to have the problem remedied.
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Doors and windows39
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Technical data
Doors and windowsRemote control keysSet of keys Remote control key
The remote control key will lock and unlock the car via the central 
locking system and start the engine.
 Spare key
The spare key should be used only temporarily if the remote control 
key has been misplaced or lost.
Replacing a key
If you should lose a key, please contact an Audi dealer. Have the 
remote control coding for that key deactivated. For this purpose you 
should bring all available keys with you. It is also important to notify 
your insurance company if a key has been lost.
Electronic immobiliser
The immobiliser is designed to prevent unauthorised persons from 
driving the vehicle. If an uncoded key is used, SAFE will appear in 
the mileage recorder display.It may not be possible to start the engine with the key if there is 
another ignition key from a different make of vehicle on the same 
key ring.
Data stored on remote control key
Data related to the service and maintenance of the vehicle are 
stored continuously on your remote control key. Your Audi dealer 
can read out the data and will then be able to tell you what service 
work is required. This also applies to vehicles with advanced key.
Personal convenience settings
If two people use the same car regularly, it is a good idea for each 
person to have his or her “own” remote control key. When you 
switch off the ignition or lock the vehicle, your personal settings for 
the following convenience features are stored and assigned to the 
remote control key:
•
Air conditioner
•
Central locking system
•
Background lighting
•
Windows
•
parking system*
•
Seat memory*
The stored settings are then recalled automatically the next time the 
vehicle is unlocked, the doors are opened or the ignition is switched 
on.
Before you can assign the seat memory* settings to a remote 
control key, the memory function for the remote control key must be 
activated ⇒page 75.
Fig. 27  Keys supplied 
with the vehicle
AAAB
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– 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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