2008 AUDI A4 AVANT technical data

On the road -
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Power steering
Power steering makes it easier to steer the vehicle when
the engine is running.
If the engine is not running the power steering does not work and
you will find it more difficult to turn the steering wheel.
Whenever the steering wheel is turned all the way to the left or right
a lo t of stress is placed on the power steering pu mp. When this
happens you will hear a noise coming from the power steering
pump .
0 Note
Never hold the steering wheel turned all the way to the left or right
longer than 15 seconds when the en gine is running -damage to
the power steering system is likely! •
Controls and equip­
ment
Ignition lock and ignition switch
Ignition lock
T he ignition key starts or stops the engine .
0
Ignition off G)
Fig . 14 3 Ignition lock
pos it io ns
In position => fig. 143 G) both the ignition and engine are off, and
the steering is locked.
To
lo ck the stee ring after you have removed the ignition key, turn
the steering wheel in either direction un til you hear it lock in to
place. You shou ld always lock the steering whenever you leave your
vehicle. This makes a vehicle theft even more
difficult =>& .
Ign iti on on @
If it is d iff icult to turn the key after you have inserte d it into the igni ­
tion lock, turn the steering whee l back and forth . This will take the
load off the s teering lock mechanism and you will be able to turn the
key free ly and start the engine.
Starting the engine ©
In this position the engine starts. While the engine is starting, the
power supply to the headlights and other e lectrical consumers is
.,
Technical data

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Important things to do before driving
Safety is everybody's job! Vehicle and occupant safety
always depends on the informed and careful driver.
For your safety and the safety of your passengers, before
driving always:
- Make sure that all lights and signals are operat ing
correctly.
- Make sure that the tire pressure is correct.
- Make sure that all windows are clean and afford good
visibility to the outside.
- Secure all luggage and other items
carefully=> page 122.
-Make sure that nothing can interfere with the pedals.
- Adjust front seat, head restraint and mirrors correctly for your height .
- Instruct passengers to adjust the head restraints
according to their height.
- Make sure to use the right child restraint correctly to
protect
children => page 210, "Child Safety".
- Sit properly in your seat and make sure that your passen ­
gers do the
same => page 95, "General recommenda­
tions".
- Fasten your safety belt and wear it properly. Also instruct
your passengers to fasten their safety belts properly
=> page 176. •
Controls and equip­
ment Safety first
Vehicle operation
What impairs driving safety?
Safe driving is directly related to the condition of the
vehicle, the driver as well as the driver's ability to concen­
trate on the road without being distracted.
The driver is responsible for the safety of the vehicle and all
of its occupants. If your ability to drive is impaired, safety
risks for everybody in the vehicle increase and you also
become a hazard to everyone else on the road
=>& .There ­
fore:
Do not let yourself be distracted by passengers or by
using a cellular telephone .
NEVER drive when your driving ability is impaired (by
medications, alcohol, drugs, etc.).
- Observe all traffic laws, rules of the road and speed limits
and plain common sense .
- ALWAYS adjust your speed to road, traffic and weather
conditions.
- Take frequent breaks on long trips. Do not drive for more
than two hours at a stretch.
- Do NOT drive when you are tired, under pressure or when
you are stressed .
& WARNING
Impaired driving safety increases the risk of serious personal
injury and death whenever a vehicle is being used. •
Vehicle care Do-it-yourself service Technical data

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& WARNING
Drivers who are unbelted, out of position or too close to the airbag
can be seriously injured by an airbag as it unfolds. To help reduce
the risk of serious personal injury:
• Always adjust the driver's seat and the steering wheel so that
there are at least 10 inches (25 cm) between your breastbone and
the steering wheel.
• Always hold the steering wheel on the outside of the steering
wheel rim with your hands at the 9 o'clock and 3 o'clock positions
to help reduce the risk of personal injury if the driver's airbag
inflates.
• Never hold the steering wheel at the 12 o'clock position or with
your hands at other positions inside the steering wheel rim or on
the steering wheel hub. Holding the steering wheel the wrong way
can cause serious injuries to the hands, arms and head if the
driver's airbag inflates
• Pointing the steering wheel toward your face decreases the
ability of the supplemental driver's airbag to protect you in a colli­
sion.
• Always sit in an upright position and never lean against or
place any part of your body too close to the area where the airbags
are located.
• Before driving, always adjust the front seats and head
restraints properly and make sure that all passengers are properly
restrained.
• Never adjust the seats while the vehicle is moving . Your seat
may move unexpectedly and you could lose control of the vehicle.
• Never drive with the backrest reclined or tilted far back! The
farther the backrests are tilted back, the greater the risk of injury due to incorrect positioning of the safety belt and improper
seating position.
• Children must always ride in child safety seats
~ page 210.
Special precautions apply when installing a child safety seat on
the front passenger seat
~ page 187 . •
Controls and equip­ ment Safety first
Vehicle operation
Proper seating position for the front
passenger
The proper front passenger seating position is important
for safe, relaxed driving.
For your own safety and to reduce the risk of injury in the
event of an accident, we recommend that you adjust the
seat for the front passenger to the following position:
- Move the front passenger seat back as far as possible.
There must be a minimum of 10 inches (25 cm) between
the breastbone and the instrument
panel=> &.
-Adjust the angle of the seatback so that it is in an upright
position and your back comes in full contact with it
whenever the vehicle is moving.
- Adjust the head restraint so that the upper edge is as
even with the top of your head as possible but not lower
than eye level and so that it is as close to the back of your
head as
possible => page 171.
-Keep both feet flat on the floor in front of the front
passenger seat.
- Fasten and wear safety belts
correctly=> page 181.
For detailed information on how to adjust the front passenger's
seat, see
~ page 95.
& WARNING
Front seat passengers who are unbelted, out of position or too
close to the airbag can be seriously injured or killed by the airbag
as it unfolds. To help reduce the risk of serious personal injury:
.,,
Vehicle care Do-it-yourself service Technical data

Driving Safely -
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Use only floor mats that leave the pedal area unobstructed and that
are firmly secured so that they cannot slip out of position. You can
obtain suitable floor mats from your authorized Audi Dealer.
Floor mat fasteners are installed in your Audi.
Floor mats used in your vehicle must be attached to these fasteners.
Properly securing the floor mats will prevent them from sliding into
positions that could interfere with the pedals or impair safe opera­
tion of your vehicle in other ways .
& WARNING
Pedals that cannot move freely can result in a loss of vehicle
control and increase the risk of serious personal injury.
• Always make sure that floor mats are properly secured.
• Never place or install floor mats or other floor coverings in the
vehicle that cannot be properly secured in place to prevent them
from slipping and interfering with the pedals or the ability to
control the vehicle.
• Never place or install floor mats or other floor coverings on top
of already installed floor mats. Additional floor mats and other
coverings will reduce the size of the pedal area and interfere with
the pedals.
• Always properly reinstall and secure floor mats that have been
taken out for cleaning.
• Always make sure that objects cannot fall into the driver foot­
well while the vehicle is moving. Objects can become trapped under the brake pedal and accelerator pedal causing a loss of
vehicle control. •
Controls and equip­ ment Safety first Vehicle operation
Stowing luggage
Loading the luggage compartment
All
luggage and other objects must be properly stowed
and secured in the luggage compartment.
Fig. 165 Safe load
positioning: heavy
cargo positioned as
far
forward as possible.
Loose items in the luggage compartment can shift
suddenly, changing vehicle handling characteristics. Loose
items can also increase the risk of serious personal injury in
a sudden vehicle maneuver or in a collision.
- Distribute the load evenly in the luggage compartment.
- Always place and properly secure heavy items in the
luggage compartment as far forward as possible
=> fig. 165.
- Secure luggage using the tie-downs provided
=> page 107, "Luggage compartment".
- Make sure that the rear seat back is securely latched in
place. .,_
Vehicle care Do-it-yourself service Technical data

Driving Safely -
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Tie-downs
The luggage compartment is equipped with four tie­
downs to secure luggage and other items.
Use the tie -downs to secure your cargo properly => page 173,
"Loading the luggage compartment".
In a collision, the laws of physics mean that even smaller items that
are loose in the vehicle will become heavy missiles that can cause
serious injury. Items in the vehicle possess energy which vary with
vehicle speed and the weight of the item. Vehicle speed is the most
significant factor.
For example, in a frontal collision at a speed of 30 mph (48 km/h),
the forces acting on a 10 lbs. (4,5 kg) object are about 20 times the
normal weight of the item. This means that the weight of the item
would suddenly be about 200 lbs. (90 kg). You can imagine the inju­
ries that a 200 lbs . (90 kg) item flying freely through the passenger
compartment could cause in a collision like this.
& WARNING
Weak, damaged or improper straps used to secure items to tie­
downs can fail during hard braking or in a collision and cause
serious personal injury.
• Always use suitable mounting straps and properly secure
items to the tie-downs in the luggage compartment to help
prevent items from shifting or flying forward as dangerous
missiles.
• When the rear seat backrest is folded down, always use suit­
able mounting straps and properly secure items to the tie-downs
in the luggage compartment to help prevent items from flying
forward as dangerous missiles into the passenger compartment.
• Never attach a child safety seat tether strap to a tie-down.
•
Controls and equip­
ment Safety first Vehicle operation
Reporting safety defects
If you believe that your vehicle has a defect which could cause a
crash or could cause injury or death, you should immediately inform
the National Highway Traffic Safety Administration (NHTSAl in addi­
tion to notifying Audi of America, Inc. If NHTSA receives similar
complaints, it may open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order a recall and remedy
campaign. However, NHTSA cannot become involved in individual
problems between you, your dealer, or Audi of America, Inc.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at 1-888-327-4236 (TTY:
1-800-424-9153);
go to
http://www.safercar.gov;
or write to: Administrator, NHTSA, 400 Seventh
Street, SW., Washington, DC 20590.
You can also obtain other information about
motor vehicle safety from
http://www.safercar.gov. •
Vehicle care Do-it-yourself service Technical data

Before driving off, always:
-Fasten your safety belt and make sure you are wearing it
properly.
- Make sure that your passengers also buckle up and prop­ erly wear their safety belts.
- Protect your children with a child restraint system appro-
priate for the size and age of the children.
The warning light {} in the instrument cluster lights up when the
ignition is switched on as a reminder to fasten the safety belts . In
addition, you will hear a warning sound.
After the ignition is switched on, the warning tone will come on for about 6 seconds a long with a{} warning light in the instrument
cluster if either the driver or (on USA models only) front seat
passenger has not fastened their safety belt. As soon as the driver
and front seat passenger have fastened the safety belt, the warning
tone will stop and the warning light will go out.
I f both the driver and front seat passenger have not buckled -up
within about 24 seconds after the warning tone has stopped, the
warning tone will sound again for about 6 seconds. The warning
tone will sound repeatedly for about 6 seconds at 24 second inter­
vals until both the driver and front passenger have buckled-up. The
safety belt warning system is active for about 5 minutes and during
this time the warning light in the instrument cluster will stay on .
Fasten your safety belt now and make sure that your passengers
also properly put on their safety belts.
•
Safety first
Safety belts
Why safety belts?
Frontal collisions and the law of physics
Frontal crashes create very strong forces for people riding
in vehicles.
"' "' 9 w
"' a,
Fig. 167 Unbelted
occupants in a vehicle
heading for a wall
Fig . 168 The vehicle
crashes into the wall
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Technical data

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& WARNING
Always read and heed all WARNINGS and other important informa­
tion
=> page 180.
[ i] Tips
The seat height adjustment on the front seats can also be used the adjust the position of the safety belts .•
Improperly worn safety belts
Incorrectly positioned safety belts can cause severe inju­
nes.
Wearing safety belts improperly can cause serious injury or
death. Safety belts can only work when they are correctly
positioned on the body. Improper seating positions reduce
the effectiveness of safety belts and will even increase the
risk of injury and death by moving the safety belt to critical
areas of the body . Improper seating positions also increase
the risk of serious injury and death when an airbag deploys and strikes an occupant who is not in the correct seating position. A driver is responsible for the safety of all vehicle
occupants and especially for children. Therefore:
- Never permit anyone to assume an incorrect sitting posi­
tion in the vehicle while
traveling =>& .
& WARNING
Improperly worn safety belts increase the risk of serious personal
injury and death whenever a vehicle is being used.
• Always make sure that all vehicle occupants are correctly
restrained and stay in a correct seating position whenever the
vehicle is being used.
Controls and equip­ ment Safety first Vehicle operation
& WARNING
(continued)
• Always read and heed all WARNINGS and other important infor­
mation
=> page 180. •
Safety belt tensioner
How safety belt pretensioners work
In front, side and rear collisions above a particular
severity, safety belts in use are tensioned automatically.
The safety belts are equipped with safety belt pretensioners . The
system is activated by sensors in front, side and rear collisions of
great severity. This tightens the belt and takes up belt
slack=> & in
"Care, service and disposal of safety belt pretensioner". Taking up
the slack helps to reduce forward occupant movement during a collision .
0 Note
Never let the belt remain over a rear seat back that has been folded
forward. The rear belt pretensioner will be activated unnecessarily
in a collision and then has to be replaced .
[ i] Tips
The safety belt pretensioner can only be activated once.
• In minor frontal, side and rear -end collisions, in a rollover and in
accidents involving very little impact force, the safety belt preten­
sioner are not activated.
• When the safety belt pretensioner is activated, a fine dust is
released. This is normal and is not caused by a fire in the vehicle.
• The relevant safety requirements must be observed when the
vehicle or components of the system are scrapped. A qualified
deal -_,,.
Vehicle care Do-it-yourself service Technical data

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Airbag system
Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For airbags to
do their job, occupants must always properly wear their
safety belts and be in a proper seating position.
For your safety and the safety of your passengers, before
driving off, always:
- Adjust the driver's seat and steering wheel properly
=> page 168,
-Adjust the front passenger's seat properly=> page 96,
-Wear safety belts properly=> page 180 ,
- Always properly use the proper child restraint to protect
children
=> page 210 .
In a col lision airbags must inflate within the blink of an eye and with
considerable force . The suppl emental airbags can caus e injuries if
t he driver or the front seat passenger is not seated properly. There ­
fore in order to help the airbag to do its job , it is important, both as
a driver and as a passenger to sit properly at a ll times.
By keeping room between your body and the steering wheel and the
front of the passenger compartment, the airbag can inflate fully and
completely and provide supplementa l protect ion in certain frontal
collisions => page 168, "Proper occupant seating positions" . For
detai ls on the operation of the seat adjustment
contro ls => page 97.
It's especially important that children are properly restrained
=> page 210.
Controls and equip­ ment Safety first Vehicle operation
There is a lot that the driver and the passengers can and must do to
help the individual safety features installed in your Audi work
together as a system .
Proper sea ting position is important so that the fron t airbag on the
driver side can do its job. If you have a physical impairment or
condition that prevents you from sitting properly on the driver seat
with the safety belt properly fastened and reaching the pedals, or if
you have concerns with regard to the function or operation of the
Advanced Airbag System, please contact your authorized Audi
dea ler or qualified workshop, or ca ll Audi Customer CARE at 1 -800-
822 -2834 for possible modifications to your vehicle.
When the airbag system deploys, a gas generator wi ll fill the
airbags , break open the padded covers, and inflate between the
steering whee l and the driver and between the instrument pane l
and the front passenger. The airbags will deflate immediately after
deployment so that the front occupants can see through the wind ­
shie ld again without interruption .
All of this takes place in the blink of an eye, so fast that many people don't even realize that the airbags have deployed. The airbags also
inflate with a great deal of force and nothing should be in their way
when they deploy. Front airbags in combination with proper ly worn
safety belts slow down and limit the occupant's forward movement .
Together they help to prevent the driver and front seat passenger
from hitting parts of the inside the vehicle while reducing the forces acting on the occupant during the crash. In this way they help to
reduce the risk of injury to the head and upper body in the crash.
Airbags do not protect the arms or the lower parts of the body .
Both front airbags wi ll not inflate in all frontal collisions. The trig­
gering of the airbag system depends on the vehic le dece leration
rate caused by the collision and registered by the electronic contro l
unit . If this rate is below the reference value programmed into the
control unit, the airbags will not be triggered, even though the car
may be badly damaged as a result of the collision . Vehicle damage, _,,
Vehicle care Do-it-yourself service Technical data