2008 AUDI A4 AVANT ignition

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Ap plies to vehi cles: with convent ional batte ries
Checking the battery acid level on
conventional batteries
The acid level of a conventional battery can be checked
visually.
Fig . 215 Engin e
co mp artmen t; Co nve n­
tio na l battery w ith acid
l eve l mar ks (cover
re m ove d)
-The level of acid inside the battery is visible through the
case at the font . Acid level should be exactly at t he "max"
mark or very close be low i t.
If the acid level has dropped below the "m in" mark, the low cell
should be topped to the
"max" mark with distill ed wa ter.
We recommend you have your authorized Audi dea ler test your
battery.
A battery that is older than five years and has a low acid level should be rep laced.
0 Not e
Do not overfill the battery, otherwise battery acid will overflow
through the vent opening . This can damage the paint and cause
corrosion. •
Battery charging
Starting the engine requires a well charged battery.
Always read and he ed all WARNINGS below => & and
=> & in "Working on the battery" on page 286.
-Switch off the ignition and all e lectrica l co nsumers.
-Make sure the area is well ventilated when you cha rge
t h e battery.
-Connec t charger cables . Charger cable s mu st alw ay s be
c onne cte d POSITIVE
G to POSITIVE G and NEGATIVE 8
to NEGATIVE (:).
-Switch on the charger.
-Make sure the charging rate is not over 6 amps.
-T urn off the charger ::::::,& .
-Disconnect the charger cab les .
-Connect both battery cables to the battery if necessary -
first plus, then minus.
It is not nec essary to remove the battery from th e engine compart ­
ment, and it is also not necessary to disconnect the cables.
Norma lly, a battery should be charged at no more than 10 percent
of its rated capacity . .,.
Ve hic le care irechnical data

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-Switch off the ignition and all electrical consumers.
First disconnect the minus cab le (usual ly black or brown) and then
the plus cable (usual ly red). Then remove the battery mounting
bracket and remove the battery. •
Replacing battery
The new battery must have the same specifications and
dimensions as the old one.
A replacement battery must have the same spec ifications and
dimensions as the o riginal equipment battery. Specifications are
listed on the battery housing.
When installing the battery, make sure the ignition and all electrical
consumers are switched off.
0 Note
Make sure the ventilation hose on the side of the battery is
connected, otherwise fumes or battery acid can leak out.
~ For th e sake of th e environm ent
Because of the problem of proper disposal of a battery, we recom­
mend your authorized Audi dealer change the battery for you.
Batteries contain sulfur ic acid and lead and must always be
disposed of properly in compliance with a ll environmenta l regula ­
t ions . Dispos ing of vehic le batteries improperly is very dangerous to
the environment. •
Windshield/headlight washer
container
Using plain water is not adequate for filling the wind­
shield washer system and the headlight washer system*.
i w a, a,
Fig . 21 6 Engin e
co mp artment : Wind ­
s hiel d and head ligh t
w as her f luid contain er
~-~ The washer flu id container is marked with the symbol W on
its cap.
-Before you check a nything in the engine compartmen t,
always read and heed all WARNINGS :::::, & in "Working
in t he engine compartment" on
page 273.
-Lift t he fi ller c ap tongu e to add wash er fluid. You can fil l
the container to the top .
-Press the ca p bac k onto the filler neck a fter fi lling the
container.
You can find the reservoir c a pac ity in the tab le in=> page 343.
Use winterized windshield washer solvent during the cold season
even though the ve hic le is equipped with
h eated wash er jets . It _.,
Vehic le care irechnical data

1119....__F_ u_ s_ e_s _ a_n _ d_ b_ u_lb _ s _______________________________________________ _
Fuses and bulbs
Fuses
Repl ac ing a fu se
A problem in the electrical system may be caused by a
blown fuse.
Fig . 232 End face of
instrument panel :
removing cover plate
to access fuses
Fig . 233 Fuse carrier
behind the instrument
panel end face, cover
removed
- Switch off the ignition and the electrical component
affected.
- Carefully pry the face cover off the instrument panel
using the ignition key or a
screwdriver ~ fig. 232.
- Check the fuse listing on the next pages to find out which
fuse belongs to the component which has failed
~ page 327, "Fuse list".
- Remove the blown fuse with the plastic clip provided.
The clip is located on the holder in the fuse box.
- Replace a blown fuse (recognizable by the melted metal
strip inside) with a fuse of the same amperage .
- Firmly snap the cover back onto the instrument panel
face.
The various electrical circuits are protected by fuses. The fuses are
clustered in a centralized unit. The unit is located behind the face
panel at the end of the instrument panel. The crank for operating
the sunroof in case of a power failure is also stored behind the face
panel ~ page 70.
Two spare fuses and a sticker identifying the fuses are located on
the inside of the fuse box cover.
You are well advised to keep a supply of spare fuses in your vehicle.
Fuses with the proper ampere ratings are available at your Audi
d ea le r.
& WARNING
Never replace a fuse with one that has a higher amperage rating.
• A fuse with a too high amperage could damage the electrical
part and cause a fire.
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_________________________________________________ G_ e_ n_ e_r _a _l_ i_n _f_o _ r_ m_ a_ t
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T he sa fe ty co mplia nce s ticke r
is your assurance t hat your new vehicle complies with a ll applicable
Federa l Motor Vehic le Safety Standards which were in effect at the
t ime the veh ic le was manufactured . You can find t his st icker on the
left door jamb. It shows the mon th and year of production and the
vehic le identification number of your vehic le (perforation) as well as
the Gross Veh icle Weight Rating (GVWR) and the Gross Axle Weight
Rating (GAWRl.
Th e high volt ag e wa rning la bel
is located on the lock carrier .
The spark ignition syste m mee ts all requirement s of the Canadi an
Interf ere nc e-C au si ng Equipm ent Regulati ons. •
Weights
Gross Veh icle Weight R ating
The G ross Veh ic le Weight Rat ing (GVWR), and the Gross Ax le Weight
Rating (GAWR) for front and rear are listed on a sticker on the left
door jamb .
The Gross Vehicle Weight Rating includes the we ight of the basic
vehic le plus fu ll fuel tank, oil and coolant, plus maximum load,
whic h inc ludes passenger weight ( 150 lbs/68 kg per designated
seating position) and luggage weight.
Gr oss Axle Weight Ra ting
The Gross Ax le Weight Rating is the maximum load that can be
app lied at each axle of the
veh ic le =:> & .
Vehicl e cap acit y w eight
The vehicle capacity weight (max. load) is listed either on the
driver's side 8 -pillar or inside the fuel fi ller f lap .
Controls and equip­
ment Safety first Vehicle operation
Roof
weight
The maximum permissible roof we ight is
165 lb (75 kg ). The roof
weight is made up of the weight of the roof rack system and the
weight of the object being
transported =:> page 117, "L oading the
roof rack".
LJ}. WARNING
• The actual Gr oss Axle Weight R atin g at the front and re ar ax les
s hould not ex ceed the permi ssible w eight s, and th eir combination
mu st not e xceed the Gr oss Vehicle Weight R atin g.
• Exceeding pe rmi ssible weight ratin gs can re sult in vehicle
d am age , acc ident s and per son al inju ry.
0 Note
• The vehicle capacity weight figures apply when the load is
distr ibuted even ly in t he ve hicle (passengers and l uggage). When
transporting a heavy load in the luggage compartment, carry the
load as near to the rear axle as possib le so that the vehic le's
handling is not impaired .
• Do not exceed the maxim um permissib le axle loads or the
maximum gross vehic le weight. Always remember that the vehic le's
handling wi ll be affected by the extra load . Therefore, adjust your
speed according ly.
• Always observe local reg ulations. •
Dimensions
The specifications refer to the basic mode l. Differences may occur
depending on the mode l type and options ordered, for example, tire
sizes.
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Vehicle care Do-it-yourself service Technical data

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W For the sake of the environm ent
By regularly ma intain ing your vehicle, you help make sure that emis ­
sion standards are maintained, thus minimizing adve rse effects on
the e nv ironment. •
Important considerations for you and your
vehicle
T he increasing use of elec tronics, sophisticated fue l injection and
emission con trol systems, and t he gene rally increasing tec hn ical
complexity of today's automobiles, have steadily reduced the scope
of maintenance and repai rs which can be carried ou t by vehic le
owners.
Also , safety and environmental concerns p lace very strict
limits on the nature of repairs and adjustments to engine and trans ­
m iss ion parts whic h an owne r can perform.
Maintenance , adjustments and repairs usua lly require special tools ,
t es ting dev ices a nd othe r eq uipment availab le to s pec ial ly t rai ned
workshop personne l in order to assure proper performance , reli ­
abil ity and safe ty of the vehicle and its many sy stems .
Im proper maintena nce, adjustments and repairs can impa ir the
operation and reliability of your vehicle and even void your vehicle
wa rranty. T here fore, proof o f servic ing in acc orda nce with the main­
tenance schedule may be a condition for upholding a possib le
warranty cla im made with in t he war ran ty per iod .
Above all, operationa l safety can be adversely affected, creating
unnecessary risks for you and your passengers.
I f in doubt about any servicing, have it do ne by your auth orized Audi
dea ler or any other properly equipped and qua lified workshop . We
str ongly u rge y ou to give yo ur auth orized Au di d ealer the oppo rtu ­
n ity to perform all scheduled maintenance and necessary repairs .
Yo ur dealer has the faci lit ies, origi nal par ts an d trained specia lis ts
to keep your vehic le running proper ly.
Controls and equip­ ment Safety first
Vehicle operation
Performing limited maintenan ce yourself
The following pages des cribe a li mi ted numbe r of proced ures wh ic h
can be performed on your vehicle with ordinary tools, should the
need a rise a nd trained pers onnel be unavaila ble. Before perfo rm ing
any of these procedures, a lways t horoughly read all o f the app li­
cable text and carefu lly fo llow the instructions given. Always rigor ­
ously observe the
WARNINGS provided.
Before you check anything in the engine compartment , always read
and heed all
WARNINGS ~ & and~ & in "Wo rking i n th e engine
compartment" on
page 273.
& WARNING
• Serious personal injury may occur as a result of improperly
performed maintenance , adjustments or repairs .
• Always be e xtremely careful when working on the veh icle .
Always follow commonly accepted safety practice s and general
common sense . Never risk personal injury .
• Do not attempt any of the maintenance, checks or repairs
described on the following pages if you are not fully familiar with
the se or other procedures with respect to the vehicle , or are uncer ­
tain how to pro ceed .
• Do not do any work without the proper tools and equipment .
Have the necessary work done by your authorized Audi dealer or
another properly equipped and qualified work shop .
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan . It is temperature controlled and can switch on
s uddenly -even when the engine is off and the ignition key has
been removed . The radiator fan swit ches on automat ically when
the coolant reaches a certain temperature and will continue to run
until the coolant temperature drops .
• Alway s remove the ignition key before anyone gets under the
vehi cle .
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Vehicle care Do-it-yourself service Technical data

-Alphabetical index
---=------------------------------------------------
I
Ignition key 135
Ignition lock ... ... .. .... .... ...... . 135
Electronic immobiliz er ..... ........ 54
Ignition lock posit ions .... .... ...... . 135
167
185
Impor
tant things to do before driving ..
Improperly worn safety belts
Ind icator light
Airbag system . . . . . . . . . . . . . . . 198 , 199
PASSENGER AIR BAG OFF ......... 199
Indica tor lights . . . . . . . . . . . . . . . . . . . 12, 19
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 215
How do I properly install an infa nt seat in
my vehicle? .............. ...... 215
Safety instructions . . . . . . . . . . . . . . . 215
Ins ide rear view mirror .... ....... .... . 90
Installing child safety seats
Safety belts . . . . . . . . . . . . . . . . . . . . . 220
Inst rument cluster il lum ination ........ 15
In strument panel
Illum ination ...... ........ ... .... . 78
Inst rument panel and controls .. ....... 12
Ins truments and controls
Genera l ill ustration .... ....... .... . 11
In terior lights ....................... 81
Ambient lighting .................. 82
Luggage compartment ............. 83
Rear ............................ 82
J
Jack and tools . . . . . . . . . . . . . . . . . . . . . . 316 Jumper cables
.......... .... .... .... 331
Jump -starting 330
K
Key ...... ..... .. ...... .... ... .. .... 52
Battery replacement . . . . . . . . . . . . . . . 54
Coded settings .. .... ....... ..... 132
Convenience opening and closing of windows ... .... ... .. .... .... ... 59
Emergency key . . . . . . . . . . . . . . . . . . . 52
Key replacement . . . . . . . . . . . . . . . . . . 52
Master key .......... ...... .... ... 52
Valet key . . . . . . . . . . . . . . . . . . . . . . . . . 52
Key-coded settings Climate controls .. ........ ....... 132
Keyl ess entry remote control
Keys 53, 56
Electronic immobilizer ...... .... ... 16
Kick-down ...... ....... ...... .. 146, 153
L
LATCH ............................ 225
Description ...................... 225
Guidance fixtures for lower anchorages .
226
Ins talling a child restraint .. .. .. ... 228
Location ......... .... .... .... ... 225
Mounting and re leasing the anchorage
hook .. ...... ...... .... ... .. ... 229
Leather ..... .. ...... ... .. .... .... .. 262
Cleaning ........................ 263
Le aving -home-function ............... 77 Lifting jack
......... .... .... .... .... 321
Lifting points ...... ...... ... .. .... .. 336
Lifting/raising the vehic le ............ 335
Light sensor defective ................ 34
Light sensor package
Automatic headlight contro l .. .. ... . 73
Lights Coming-home/leaving-home-function 77
Emergency flasher ................ 79
Front fog lights ............... .... 76
Headlights ....................... 72
High beam ..... .. .... .... .... . 72, 80
High beam warning/indicator light .. . 23
Instrument pane l il lumination . ...... 78
Rear fog lights ..... ............... 76
Side marker lights ................. 72
Turn signals ...................... 80
Xenon headlights ...... ..... .. .... 79
Loading the luggage compartment ... . 173
Loading the roof rack .. ....... .... ... 117
Locking Power locking switch .............. 59
Rear lid .......................... 61
Remote control . . . . . . . . . . . . . . . . . . . 56
Using the key .. .... .... ..... .. .... 58
Lower anchorage locator button ...... 225
Luggage Stowing ........................ 173
Luggage compartment Attachment hooks . ........ .... ... 112
Cargo net .... .... .... ........... 108
Fastening eyes ................... 108
Light ............................ 83

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Repair manuals ... .. .... .... ...... .. 346 Safety belt tensioner .... .... .... .... . 185 Safety lock
Repa irs
Airbag system
Replacing 201
Wheel rims ...................... 307
Replacing a fuse ...... ...... ...... .. 326
Replacing a sound syste m .... .... .... 349
Replacing bu lbs . .... .... .... ...... .. 328
Replacing tires and wheels ........... 306
Reporting safety de fects .. ...... . 175, 345
Reset button ..... .. .... .... ...... 18, 39
Resetting remote control .. ...... .... .. 57
Retractor .. ...... .... ... .. .... .... . 181
Rims Cast a lloy
Replacing
Stee l rims 260
307
259
Roof rack Loading ...... .... .... ... .... .... 11 7
Mounting locations ............... 117
Safe mounting ... .... .... .... .... 116
Roof weight .. ...... .... .... ... .... . 117
s
SAFE (disp lay indica tion)
See Electronic i mmobi lize r .. .. .... .. 16
Safe driving habits .. .... .... ...... .. 166
Safety belt height adjustment ..... .... 184
Sa fety belt pos ition .. ..... .... .... ... 182
Safety belt height adjustme nt .. .. .. 184
Sa fety belt s worn by pregnant women ..
183
Controls and equip­ ment Safety first Care, service and disposal .
.... .... 186 Ignition key, automatic transmission 136
Safety belt war ning light ... .. .... . 22, 176
Seat adjustment
Safety belts . .......... ...... .... ... 181 Driver
's seat ....... ... .... .... .... 95
clean ing . .... .... .... .... .... ... 265 Driver's seat memory ...
... .... .... 100
Danger to passengers who do not wear a Extending/ shorten
ing the driver's seat
safety belt . .... ...... .... ... .. . 178 cushi
on .. .... ... .... .... .... ... 1 00
Fastening .......... .... .... .... . 181 Fr
ont passe nger's seat .... .... .... . 96
Improper ly worn . .......... ...... 185 Front power sea
ts .. ...... .... ... .. 97
Not worn . .... ...... .... ... .. .... 178 Head restraints ..
...... ..... .. .... 1 71
Safety belt position ... .... .... .... 182 Head restraints, front
seat ...... ... 105
Sa fety instruct ions . .... .... .... ... 180 Lumbar support
................... 99
Securi ng child saf ety sea ts ... .. .... 220 Manual controls ..
.... .... .... .... . 96
Spec ia l co nsiderat ions for pregnant Manual seats
.... .... .... .... ..... 96
women .... ....... .... .... .... . 183
Seat belts
Unfastening .. ......... ....... .. . 184
Why YOU MUST wear them ... ... .. 1 76
Warning/ind ica tor light ...... ...... 176
Seat position
Why YOU MUSTwearthem ........ 176
Incorrect seat pos itio n .... .... .... 171
Worn properly . ...... .... .... .... 179
Seating ca pa city .... .... .... .... .... 176
Safety compliance sticker ...... .. .... 340
Seating pos ition
Safety equip ment .. ...... ..... .. .... 166
Driver ... .. .... .... ... .... .... ... 1 68
Safety features for occupant restraint and Front passenger ....... .... .... ... 1 69
protection ... .. ..... .. .... .... . 166
How to adjust the front seats . ...... 169
Sa fety instruct ions
Occupants ....................... 168
Engine compart men t . .... .... .... . 273
Rear passengers ... .... ...... .... . 170
f or bo oster seats ... .. .... .... .... 218
Seats
f or side curtain a irbags .. ...... .... 208
Manual ad just ment controls ...... .. 96
f or using ch ild safety seats ... .. .... 213
Number of seats ...... .... .... ... . 176
for using convertible child seats . ... 216
Selector lever . ........... ........ ... 151
for using infant seats . .... .... .... 2 15
for using safety be lts . .......... ... 180 Selector
lever 6-speed automatic
trans missi on ... .. ... .... .... ... 1 44
Monitoring the Advanced Airbag System
200 Selector
lever mu ltitronic™ ...... .... . 151
Service in te rval display . ...... .... ... .. 17
Vehicle operation Vehicle care Do-it-yourself service Technical data