ECU AUDI A4 AVANT 2008 Workshop Manual

___ w_ h_ a_t _ d_ o_ l_d _ o_ n_ o_w _ ? ______________________________________________ _
Storing the replaced wheel
- Place the replaced wheel inside the spare wheel well in
the luggage compartment.
- Tighten the knurled retaining screw clockwise to secure
the wheel in place.
- Disengage and lower the floor panel before you close the
luggage compartment lid again.
& WARNING
Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident.
• Never store the spare wheel or jack and tools
in the passenger
compartment.
• Always store all jacking equipment, tools, and the spare wheel
in the luggage compartment.
• Tighten the knurled retaining screw for the spare wheel
securely.
[ i] Tips
Check the inflation pressure of the spare tire periodically to keep the
tire ready for use. •
Wheel change
Before changing a wheel
Follow these points for your own and your passenger's
safety when replacing a wheel.
After you experience a tire failure, pull the car well away
from moving traffic and try to reach
level ground before
you
stop ~& .
-All passengers should leave the car and move to a safe
location (for instance, behind the
guardrail) ~& .
-Apply the parking brake firmly ~& .
-Move selector lever to position P on an automatic trans-
mission; put manual transmission in
first gear~& .
-If you are towing a trailer: unhitch the trailer from your
vehicle.
- Take the
tool case and the spare tire ~ page 316 out of
the luggage compartment.
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn off
the engine, turn the emergency flasher on and use other warning
devices to alert other motorists.
• Make sure that passengers wait
in a safe place away from the
vehicle and well away from the roadway and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed . When one
front wheel is lifted off the ground, placing the Automatic Trans-
~

What do I do now? 11111111
-----------------------------------
& WARNING (continued)
mission in "P" (Park), or engaging a gear in a manual transmission
will
not prevent the vehicle from moving.
• Before you change a wheel, be sure the ground is level and firm.
If necessary, use a sturdy board under the jack.
• After installing the spare wheel, make sure that you remount
the flat tire/wheel in its storage area properly and tighten the
knurled retaining screw securely . •
Changing a wheel
When you change a wheel, follow the sequence described
below step-by-step and exactly in that order.
1. Remove the decorative wheel cover*. For more details
see also
=> page 320, "Decorative wheel covers" or
=> page 320, "Wheels with cap -covered wheel bolts".
2. Loosen the wheel bolts => page 321.
3.
Locate the proper mounting point for the jack and align
the jack below that
point=> page 321.
4. Lift the car with the jack => page 321.
5.
Take the flat wheel off and then put the spare on
=> page 323.
6. Tighten all wheel bolts lightly.
7.
Lower the vehicle with the jack.
8. Use the wheel bolt wrench and
firmly tighten all wheel
bolts=> page 321.
9. Put the decorative wheel cover* back on.
LJ}. WARNING
Always read and head all WARNINGS and information :::::> & in
"Raising the vehicle" on
page 321 and :::::, page 324. •
After changing a wheel
A wheel change is not complete without the following
actions.
-Store and secure the replaced wheel in the spare wheel
well.
-Put the tool case and the jack back in place in the luggage
compartment.
-Check the tire pressure on the spare wheel immediately
after mounting it.
- As soon as possible, have the
tightening torques on all
wheel bolts checked with a torque wrench. The correct
tightening torque is
90 ft lb (120 Nml.
- Have the flat tire
replaced as soon as possible.
[ i] Tips
• If you notice while changing a tire that the wheel bolts are
corroded and difficult to turn, then they should be replaced before
you check the tightening torque.
• Drive at reduced speed until you have the tightening torques
checked .•
Do -it -yourself service

-What do I do now? Pt'l:f....__ ______________ _
Fig. 229 Clo se- up:
pr ope r pos itio ning of
l ifting ja ck
- Posi tion the jack below the doo r si ll un der the mounting
point
t h at is c losest to the whee l to be changed
=> page 321, fig . 228.
- Turn the
jack handle cloc kw ise unt il the jack arm jus t fits
underneath the rib running along th e under body
=> & .
Align the jack so that th e jack arm claw=> fig. 229 @ fits
snugly arou nd the under bod y rib and t he movab le base
plate @ sits flat on the ground.
W ind t he jac k up fur ther until th e fl at wh eel comes off th e
g roun d=> & .
Recesses a t the fron t a nd r ear of th e u nderbody rib ma rk the prop er
mounting locations for the
jack~ page 321 , fig. 228. There is only
one
designated jack mo unting point fo r each w hee l. Do not apply
the jack anywhere else
=> & -
The jack should be positioned approximately 6 in. (15 cm) behind
t he fron t whe el or 10 in . (25 cm) in fron t of t he rear whee l.
An unstab le surface unde r the jack can cause the vehicle to s lip off
the jac k. Alwa ys provi de a fir m base fo r the jack on the g roun d. If
necessary place a sturdy board or simi lar support under the jack . On hard
, slippery surfaces (su ch as tiles) use a rubber mat or simi lar to
p revent the jack fr om
slippi ng => & .
& WARNING
• You or your pa ssengers could be injured while changing a
wheel if you do not follow safety precaut ions:
- Mounting the jack under the veh icle at any other place than
indicated above may damage the vehicle or may result in
personal injuries .
- A soft or unstable surfa ce under the ja ck may cause the
vehicle to slip off the ja ck. Always provide a firm base for the
jack on the gro und .
If nece ss ary , use a sturdy board under the
jack .
- On hard , slippery surface (such as tiles) use a rubber mat or
similar to prevent the jack from slipping .
• To help prevent injury to yourself and your passengers :
- Do not raise the vehicle until you are sure the jack i s securely
engaged .
- Passengers must not remain in the vehicle when it is jacked
up .
- Make sure that pa ssengers wait in a s afe pla ce away from
the vehicle and well away from the roadway and traffic .
- Make sure jack position is correct , adjust as necessary and
then continue to raise the jack .
•

____ w_ h_ a_t _ d_ o_ l_d _ o_ n_ o_w _ ? ______________________________________________ _
• Pull the reversible b lade from the screwdriver before you use the
h exago nal soc ket i n the ha ndle to tur n the wheel bo lts.
• When mounting tires with
unidirectional tread design make sure
th e trea d pat tern is po inte d the rig ht
way => page 324.
• T he whee l bo lts should be clean and easy to turn. Check for dirt
and c orrosio n on the m ating su rfaces of bo th the whee l a nd th e
hub . Remove a ll dirt from these surfaces before remou nting the
w heel. •
Tires with unidirectional tread design
T ir es wit h unid irectio nal tr ea d d esign must b e moun ted
with th eir tread pattern po int ed the r ight direction .
Using a spare tire with a tread pattern intended for use
in a specific direction
Whe n usi ng a s pa re t ire wi th a tre ad patte rn inte nd ed for use in a
specific direct ion, please note the followin g:
• The di rec tio n of rot ation is marked by an arr ow on th e s ide o f the
tir e.
• If the s pare tir e ha s to be ins talle d in th e inco rrect directi on i n the
event of a flat tire, use th e spar e tire on ly temporarily since the tire
w ill n ot be a ble to achieve it s optimum pe rform ance cha rac te ri sti cs
wi th r egar d to a qua plani ng , noise an d w ear .
• W e rec om mend th at p arti cula r att ent ion be pai d to this fac t
dur in g wet weath er and that you adjust your sp eed to match road
c o nd it io ns.
• R eplace the flat ti re with a new one and have it instal led on your
v e hi cle as soo n as poss ib le to re st ore th e hand ling a dva ntages of a
p roper ly pointed direction -dependent t ire.•
Notes on wheel change
P lease read the information => page 305 , "N ew tire s and replacing
t ir es a nd whe els" if you are going to use a spa re tire w hich is
different from the t ires on you r ve h ic le.
Aft er you ch ange a tire:
• Check the tire pressure on the spare immediately after
mounting .
• Have the wheel bolt tightening torque checked with a torque
wrench as soon as possible by your authorized Audi dealer or a qualified service station .
• On steel and alloy wheel rims , the wheel bolts are correctly tight­
ened with a torque of 90 ft lb (120 Nm ).
• If you notice while changing a tire that the wheel bolts are
corroded and difficult to turn while changing a tire , they should be
replaced before you check the tightening torque.
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible . Remount the wheel cover.
Until then, drive with extra care and at reduced speeds .
& WARNING
• If you are going to equip your vehi cle with tires or rims which
differ from those which were factory installed , then be sure to read
the information
=> page 305 , "New tires and replacing tires and
wheels ".
• Always make sure the damaged wheel or even a flat tire and
the jack and tool kit are properly secured in the luggage compart­
ment and are not loose in the passenger compartment .
• In an accident or sudden maneuver they could fly forward ,
injuring anyone in the vehicle .
• Always store damaged wheel, jack and tools securely in
luggage compartment . Otherwise, in an accident or sudden

-Emergency situations PW--------=----=---------------
4. Connect clamp on opposite end of negative cable to the
negative(-) terminal© of the discharged vehicle battery
@.
- Check that all screw plugs on the battery cells are
screwed in firmly. If not, tighten plugs prior to
connecting clamp on negative battery terminal.
Starting the engine
-Start the engine of the vehicle with the booster battery.
Run the engine at a moderate speed.
- Start engine with discharged vehicle battery in the usual
manner .
- If the engine fails to start: do not keep the starter
cranking for longer than 10 seconds. Wait for about 30
seconds and then try again.
- With engine running, remove jumper cables from both
vehicles in exact
reverse order.
The battery is vented to the outside to prevent gases from entering
the vehicle interior.
Make sure that the jumper clamps are well connected with their
metal parts in full contact with the battery terminals .
& WARNING
To avoid serious personal injury and damage to the vehicle, heed
all warnings and instructions of the jumper cable manufacturer. If
in doubt, call for road service.
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables, make sure that they cannot
get caught in any moving parts in the engine compartment.
& WARNING (continued)
• Before you check anything in the engine compartment, always
read and heed all
WARNINGS:::::, page 265, "Engine compartment".
0 Note
Improperly connected jumper cables can damage or destroy the
generator .
• Always connect POSITIVE (+l to POSITIVE(+), and NEGATIVE (-l to
NEGATIVE (- l terminal.
• Check that all screw plugs on the battery cells are screwed in
firmly. If not, tighten plugs prior to connecting clamp on negative
battery terminal.
• Please note that the procedure for connecting a jumper cable as
described above applies specifically to the case of your vehicle
being jump started. When you are giving a jump start to another
vehicle, do not connect the minus 1-1 cable to the minus (-1 terminal
on the discharged battery @::::, page 331, fig. 234. Instead, securely
connect the minus (-l cable to either a massive metal component
that is firmly bolted to the engine block or to the engine block itself .
If the battery that is being charged does not vent to the outside,
escaping battery gas could ignite and explode! •
Emergency towing with commercial
tow truck
General hints
Your Audi requires special handling for towing.
The following information is to be used by commercial tow truck
operators who know how to operate their equipment safely.
• Never tow your Audi, towing will cause damage to the engine
and transmission. .,_

Emergency situations -
----------------=-----'
• Never wrap the safety chains or winch cables around the brake
lines.
• To prevent unnecessary damage, your Audi must be transported
with a car carrier (flat bed truck).
• To load the vehicle on to the flat bed, use the towing loop found
in the vehicle tools and attach to the front or rear anchorage
=> page 333 and => page 334.
& WARNING
A vehicle being towed is not safe for passengers. Never allow
anyone to ride in a vehicle being towed, for any reason. •
Front towline eye
Do not install the front towline eye until it is needed.
Fig. 235 Front
bumper: removing the
cover cap Fig. 236 Front
bumper: towline eye
fully screwed in
The towline eye fits into the threaded hole located on the
right side of the front bumper and covered by a small cap
when not in use .
-Remove the towline eye from the vehicle tools
=} page 316.
-Press on the bottom edge of the cover cap to disengage
and take it out of the bumper. The cap remains
connected to the bumper :::} fig. 235.
-Insert the towline eye into the threaded hole:::} fig. 236
and turn it all the way in until it is seated securely, then
tighten it with the wheel bolt wrench.
When it is no longer needed, unscrew the towline eye and put it
back into the on-board toolkit. Make sure to have the towline eye
stored in the vehicle at all times. .,_
Do-it-yourse lf service irechnical data

ffl....__E_ m
_ e
_ r-=g '--e_ n_ c...:y _ s_ i_t _u _a _t_ i_o _n_ s _______________________________________________ _
& WARNING
If the towing loop is not screwed in as far as it will go, the thread
can pull out when the vehicle is towed
-potential risk of an
accident .•
Fixed rear towline eye
* ,-- -===================:---ii
Fig. 237 Rear bumper,
right side: location of
rear towline eye
The rear towing eye is welded to the chassis under the rear bumper
on the right side. •
Front hook up
These steps apply for winching the vehicle onto a car
carrier with the front first.
Fig. 238 Vehicle
secured to flatbed
truck
- Have the vehicle aligned centered with the car carrier
ramp.
- Attach the winch hook to the
front towl ine eye previously
installed=> page
333.
-Once the car is positioned on the car carrier, have safety
chain(s) attached to the rear towline eye and tightened.
[ i] Tips
Check careful ly to make sure the vehicle is hooked up securely
before moving the car up the car carrier ramp.•

Emergency situations -
----------------=-=---
Rear hook up
These s te p s app ly fo r w in chi ng the vehi cle on to a car
c arr ier w ith the re a r f ir st.
- Have the vehic le ali gne d cent ered wi th the ca r carr ier
r a mp.
- Attach the win ch hook to t he
rear to wline eye
=> pa ge 334, fig. 237 .
- On ce th e ca r is po sit io ned on t he car ca rrie r, ha ve safety
c hain (s ) a ttach ed t o the
fron t towline eye => pag e 333an d
ti ghte ned .
[ i] Tips
Chec k carefu lly to ma ke sure the veh icle is hoo ked up securel y
b ef ore mov ing the ca r up the ca r ca rrier r amp. •
Lifting the vehicle
Important safety precautions
Be aware of the following hazards before l ift ing the vehic le w ith a
w ork sho p ho is t or f lo or jack :
• The vehicle should never be lifted or jacked up from underneath
the engine oil pan, the transmission housing , the front or rear axle
or the body side members . This could lead to serious damage.
• Use lifting equipment with padded contact surfaces to avoid
damage to the underbody or chassis frame.
• Alternatively, cover the contact surfaces on workshop hoist or
floor ja ck with rubber pads before lifting.
• Before driving over a workshop hoist , check that the vehicle
weight does not exceed the permissible lifting capacity of the hoist. •
Before driving over a workshop hoist , ensure that there is suffi ­
cient clearance between the hoist and low parts of the vehicle .
& WARNING
To reduce the risk of serious injury and vehicle damage:
• Always lift the vehicle only at the special workshop hoist and
floor jack lift points illustrated
=> fig . 239 and => fig . 240 .
• Failure to lift the vehicle at these points could cause the vehicle
to tilt or fall from a lift if there is a change in vehicle weight distri­
bution and balance . This might happen, for example, when heavy
components such as the engine block or transmission are
removed .
• When removing such heavy components, anchor vehicle to
hoist or add corresponding weights to maintain the center of
gravity . Otherwise , the vehicle might tilt or slip off the hoist ,
causing serious personal injury .
•
Do-it -yourself service

llffl _ __::C:::.::: o:.:.n.:.: s:::.::: u:.:.m .:.:.: e:.: r~ I n:..:.:. f.::
o :.:.r .:.m :.:.:: a:.: t:.:. i.::o :.:.n.:.... _____________________________________________ _
&, W ARNING (continued )
• Always support your vehicle with safety stands if it i s neces­
sary to work underneath the vehicle. The jack supplied with the
vehicle is not adequate for this purpose and could collapse
causing serious personal injury .
• If you must work underneath the vehicle with the wheels on
the ground , always make sure the vehicle is on level ground , that
the wheels are always securely blocked and that the engine
cannot be started .
• Always make sure the transmission selector lever (automatic
transmission) is in
" P " (Park position) and the park brake is firmly
applied.
ffi For the sake of the environment
• Changing the engine settings wi ll adverse ly affect emission
l eve ls . T hi s is detri menta l to th e envi ro nm ent and increas es fu el
consumption .
• Always observ e env ironmenta l re gulations w hen disposing of
old e ngine oil, used brake f luid, dirty engine coo lant, spent batteries
or worn out tires .•
Additional accessories,
modifications and parts replacement
Additional accessories and parts
replacement
Alway s co nsult an autho rized Audi de aler before
pu rchasing acc essories .
Your vehicle incorporates t he latest safety d esig n f eatures ensuring
a high standa rd of active and pas sive safety . Th
is saf ety could be compromised by non -approved changes to the
v ehi cle . F or thi s re aso n, if par ts have to be re pla ced , pl ease obs erve
th e fo llow ing points when insta lling add itional acc essories :
A pproved Aud i accesso ries and gen uine Audi pa rts a re avai la bl e
fr om authori zed Aud i dea lers .
Th ese dealers also have the necessary faci lities, tools and tra ined
spec ia li sts to in sta ll th e parts an d acce ssor ies pr op erly .
& WARNING
Using the wrong spare parts or using non -approved accessories
can cause serious personal injury .
• Use only accessories expressly approved by Audi and genuine
Audi spare parts .
• These parts and accessories have been specially designed to
be used on your vehicle .
• Never install accessories such as telephone cradles or
beverage holders on airbag covers or within the airbag deploy­
ment zones . Doing so will increase the risk of injury if airbags are
triggered in an accident!
• Before you check anything in the engine compartment , always
read and heed all WARNINGS
=> page 265.
0 Note
• I f item s ot her than ge nuin e Audi s pa re pa rts, add- on eq uipment
and accessory items are us ed or if r epair wor k is not performed
according to s pecified methods, thi s can re sult in severe damage to
your v ehicle's eng ine and body (suc h as c orros io n) a nd advers ely
affect yo ur vehic le 's wa rranty.
• Th e manufacturer cannot be held liable for damage w hich occurs
d ue t o fa ilur e to comply w it h these stipu lation s.•

Alphabetical index -
-------------=----
Convertible child seats
How do I properly ins ta ll a conve rtible
child seat in my vehicle? ......... 216
Safety instructions . ...... ...... .. 216
Convertible locking retractor
Act ivating .. .. .... .... ........... 222
Deactivating ...... .... ........... 223
Using to secure a child safety seat 220,
222
Coolant system ... .. .... .... ........ 280
Coo ling System
Expansion tank .... ....... ... .... . 281
Cornering light .. .... .... ...... .... .. 75
Cruise control . ...... .... ........... 140
Changing a stored speed .... ... .. . 140
Setting and storing a vehic le speed . 140
Switching off . ........... .... .... 141
Switching off temporari ly .......... 141
Switching on .... .... .... .... .... 140
Warning/indicator lights .. ... .... ... 21
Cruising range .................. ..... 40
Cup holder ......................... 118
D
Data .............................. 343
Data recorder ... .... .... .... ..... .. . 236
Date display ......................... 14
D aytime running lights ................ 74
dEF indication .............. ......... 15
Defogging the windows .. .... .... .... 131
Defrosting the windows ...... .... .... 131
Defrosting /defogging windows .. .... .. 131
Controls and equip­
ment Safety first
Determining
correct load limit ..... .. . 302 Dynamic shift program ... .... ...... .. 153
Digita l clock .. ...... ..... .. .... .... .. 14
Setting the time ..... ...... .... .... 14
E
Digita l compass ...................... 93
Dimensions . ....... ... .. .... .... ... 341
Dipstick Location .... .... ... .. .... .... ... 277
Doors, power locks .. ...... ....... .... 58
Drive Information System Help .. ...... .... ... .. .... .... .... 43
Driver
See Seating position ........... ... 168
Driver information display ....... .... .. 24
Mi les (ki lometers) to empty .... ... .. 26
Open door or rear lid warning .. .... . 26
Outside
temperatu ire disp lay ....... . 25 ECON
When should I use ECON? ...... ... . 128
EDL Electronic differential lock .... .... . 237
Ele ctrically heated front seats ..... ... . 132
Electronic differential lock
Warning/indicator lights ...... .... .. 21
Electronic differential lock (EDU
How the system works ............ 237
Elect ronic immobilizer . ... .... .... .... 16
Electronic power contro l
EPC warning/indicator light ....... .. 23
Parking brake warning .. .... ... .. .. 29 Electronic stabilization program
(ESP)
Sound system display
...... .... .... 25 How
the system works ............ 236
Text messages .. ....... ...... .... . 29 Warning/indicator
lights ...... ...... 22
Driver Informa tion System Emergency
closing
Menu display .. ... .... .... .... ... . 41 Power sunroof ...
.... ........... .. 69
Practical example .................. 44 Emergency
flasher .. ... .... .... ...... 79
Setting .. .... ....... ...... .... .... 43 Warning/indicator
lights ...... ...... 22
Types of disp lay ..... ...... ... .... . 42 Emergency
locking ................... 61
Driver's seat memory ................ 100 Emergency
starting ... .... ... .... .... 330
Assigning the keys ....... ... .. .... 102
Emergency towing .................. 332
Recalling a seat position .. .... .... . 101
Emergency un locking (on ly manually)
Storing a seat position ............ 101
Rear lid . ... .. .... .... ...... .... .. 62
Driver's seat cushion extension ...... .. 100
Engine
Driving messages .... .... .... .... .... 29
4-cylinder (200 hp) ...... .. .... .... 274
Driving safely ....... ... .. .... .... ... 166 6-cylinder (255
hp) ................ 275
Driving time ... .. ...... .... ... .. .... . 40 Coolant
......................... 280
Dup licate key .... .... .... ...... ... .. . 52 Hood ......
...... .... ...... ..... 272
Vehicle operation Vehicle care Do-it-yourself service Technical data