2008 AUDI A4 AVANT fuel pressure

________________________________________________ T_ i_ r _e _s _ a_n_ d_ w_ h_ e_e _l_s _ __._
O cc upant loading and distribution for vehicle no rmal load for various d esignated s eating capa cities
Designated seating capacity , num­
ber of occupants
5
Cold tire inflation pressure
Vehicle normal load , number of
occupants
3
Occupant distribution in a normally
loaded vehicle
2 in front, 1 in back seat
T ire pressure affec ts the overall ha ndling, performan ce and safety of a vehicle.
Fig . 21 7 Tire pre ssu re
label : located eit her on
driver's side B-pillar or
in side the fuel filler fl ap
ill
9 ,-, ~ ------------------.. j;l
• (SEATING CAPAQlY :rorAL I :FRONT I : cENTER I :REAR I ) m
Thea,mtwd""'9/Wdoocu,,.....andQ1Vo.....,.....,-,ed .logo, _ .,.
TIRE AND LOAD ING INFORMATION
TIRE SIZE COLO TIRE PRESSURE
FRONT -KPa, -PSI
REAR -KPa, - PSI
SPARE -KPa, -PSI
MANUAL FOR
INFORMATION SEE OWNER'S I
ADDITIONAL
Fig . 218 T ir e pr essu re
label
w arm tir e to matc h "cold t ire in flation press ure" recommenda tions .
The tires wou ld then be underinflated and cou ld fai l suddenly .
M aintaini ng proper t ire pressure is one of the most im po rta nt
thi ngs you ca n do t o help avo id sud den t ire fa ilu re. Underi nflated
tires are a major cause of sudden tire failure. Keeping tires at the
ri ght pressure is also importa nt for safe and r espo nsive ve hicle
handling, traction, braking and load carrying.
Tire pressures are
particularly important when the vehicle is being driven at higher
speed s, and then especially when heavily loaded even within the
•
T ire pressure generally refe rs to the amou nt of air in a t ire that it
needs it to do its job and safely carry the combined load of the entire
veh ic le and i ts c ontents. Tire p ressu re is measu red in kilopascals
(kPa), the international measuring unit and in pounds per square
inch (PSI) . Tir e p res su re is based in part on th e vehic le's design and
load lim it - the greatest amount of weight that the veh ic le can carry
safely and the tire size . The proper tire pressure is frequently
re ferred to as the "recommended cold t ire infla tion pressure." A ir in
the tires expands when the tire heats up because of internal friction
when it fl exe s i n us e. The tir e press ure is high er w he n th e t ire has
warmed up than when it is "cold." It is the inflation pressure in a "c old" tire that c ounts. Theref ore , yo u sho uld never le t air ou t of a
permissible load -carrying capacities approved for your vehicle. ...
Ve hic le care Technical data

___ T_ ir_e _ s_ a_ n
_ d_ w_ h_ e_ e_ls _________________________________________________ _
The recommended tire pressures for your Audi depend on the kind
of tires on your vehicle and the number of passengers and/or
amount of luggage you will be transporting.
The tire pressure label located either on driver's side 8-pillar or
inside the fuel filler flap on your Audi lists the recommended cold
tire inflation pressures for the vehicle at its maximum capacity
weight and tires that were on your vehicle at the time it was manu­
fac tured .
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 occupants), you can adjust tire pressures to
those specified for normal vehicle load. Before operating the vehicle at maximum load, you must increase the tire pressures to those
specified for maximum vehicle load
~ & .
If your vehicle is equipped with a tire pressure monitoring system*,
bear in mind that the system can only monitor the tire pressures you have stored
. The system does not recognize the load condition of
your vehicle.
The effectiveness of the tire pressure monitoring system will be
impaired if you store normal load pressures but then operate the
vehicle at its maximum
load~& .
See the illustration~ page 297, fig . 217 for the location of the label
either on driver's side 8-pillar or inside the fuel filler flap (color of
the actual label and exact location on the vehicle will vary slightly).
Note that the following table is accurate at the time of going to
press and is subject to change . In the event of discrepancies, the tire
pressure label (e ither on driver's side 8 -pillar or inside the fuel filler
flap) always takes precedence.
The table below lists the recommended cold tire inflation pressures
for the Audi model covered by your Owner's Literature at the
vehicle's capacity weight and the tire si zes installed on the respec­
tive models as original equipment, or as a factory option.
Engine Tire size designation Tire pressure front Tire pressure rear
(displace- normal load normal load
ment in condition (up to full load
condition (up full load
liter) condition
condition
3 occupants) to 3 occupants)
PSI kPA PSI kPA PSI kPA PSI kPA
4-cylinder 215/55 R16 93H All Season 35 240
36 250 35 240
36 250
2.0
235/45 R17 94H All Season 33 230 35 240 33 230 35 240
235/45 R17 94V High Performance 30 210
32 220 30 210
32 220
235/40 R18 95V XL High Performance 35 240 39 270 35 240 39 270
6-cylinder 215/55 R16 93H All Season 36 250 36 250 35 240 36 250
3.2
235/45 R17 94H All Season 35 240
35 240
33 230 35 240
235/45 R17 94V High Performance 30
210 32 220 30 210 32 220
235/40 R18 95V XL High Performance 38 260 42 290 38 260 42 290
XL = reinforced or extra load tire. It may also appear as xi, EXTRA LOAID, or RF on the tire sidewall.

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The correct tire pressure for the spore wheel is located on a label
either on the driver's side B-pillar or inside the fuel filler flap.
Because technical changes may be made to vehicle equipment
during the model year, always compare the tire size designation on
the tire pressure label on your vehicle with the tires on your vehicle.
Make sure that the tire size information on the vehicle label is the
same as the size of the tires on the vehicle. This is especially impor­
tant if the vehicle belongs to someone else or you bought the
vehicle with different rims/tires or you bought the vehicle as a previ­
ously owned vehicle .
Remember, your safety and that of your passengers also depends
on making sure that load limits are not exceeded. Vehicle load
includes everybody and everything in and on the vehicle. These load
limits are technically referred to as the vehicle's Gross Vehicle
Weight Rating ("GVWR"l. The Gross Axle Weight Rating ("GAWR"l is
the maximum load that can be applied at each of the vehicle's two
axles. The Gross Vehicle Weight Rating and the Gross Axle Weight
Rating are listed on the safety compliance sticker label located
either on the driver's side B-pillar or on the inside of the fuel filler
flap. The tire pressure label on your Audi lists the maximum
combined weight of all of the occupants and luggage or other cargo
that the vehicle can carry. For the location of the tire pressure label
=> page 297, fig. 217.
& WARNING
Overloading a vehicle can cause loss of vehicle control, a crash or
other accident, serious personal injury, and even death.
• Carrying more weight than your vehicle was designed to carry
will prevent the vehicle from handling properly and increase the risk of a loss of vehicle control.
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance.
• Tires on a vehicle that has been overloaded can fail suddenly
causing loss of control and a crash.
& WARNING (continued)
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehicle's Gross Vehicle Weight Rating.
& WARNING
• Incorrect tire pressures and/or underinflation can lead to a
serious or fatal accident.
• Incorrect tire pressures and/or underinflation cause increased
tire wear and can affect the handling of the vehicle.
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control. •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
either on driver's side B-pillar or inside the fuel filler flap.
The recommended tire pressures are on the tire pressure label and
in the
table=> page 297, "Cold tire inflation pressure". This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of miles (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as it flexes in
use. The tire pressure is higher when the tire has warmed up than
when it is "cold."
It is the inflation pressure in a "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Cold tire inflation
pressure"
recommendations=> page 297. The tires would then be
underinflated and could fail suddenly. .,._
Vehicle care

___ T_ ir_e _ s_ a_ n
_ d_ w_ h_ e_ e_ls _________________________________________________ _
The tire pressure label on your Audi lists the recommended cold tire
inf lation pressures for the new, original equipmen t tires that were
on your vehic le at the time it was manufactured . For the location of
the
labe l=> page 297, fig. 217 .
Most tires lose a ir natural ly over time. They can a lso lose some air if
you drive over a potho le or hit a curb wh ile parking. It is usually not
possible to see whether the radial t ires used today are under inflated
just by looking at them.
Therefore, be su re to check tire pressures at least once a month and
always before going on a long trip . Make sure to take the number of
people and the amount of luggage into account when adjusting tire
pressure for a trip -even one that you wou ld not cons ider to be
" long ."
See => page 301, "Tires and vehicle load limits" for more
important i nformation .
A lways use an accurat e tire pressure gaug e when checking and
adjusting inflat ion pressures. Check a ll of the tires and be sure not
to forget the spare tire . If the pressure in any tire is too high when
the t ire is "cold," let air o ut of the t ire slowly with the edge of the tire
gauge and keep check ing the pressure until you reach the pressure
that is correct for the load (passengers and luggage) and kind of
driving you p lan to do .
I f the pressure in any tire is too low, note the difference between the
pressure in the co ld tire and the pressure you need and add the air
that you need to reach the correct pressure for the vehicle load
(passengers and luggage) fo r the t ires on your veh ic le as listed on
the on your vehicle and in this manual and the kind of driving you pl an to do .
Never exceed the m aximum inflation pressure li sted on the tire
s idewall for an y re ason .
Remem ber that the vehic le manufacturer, not t he tire manufacturer,
determines the correct tire pressure for the tires on your vehicle .
I t is important to check the tire pressure when the tires are cold.
• Read the required tire pressure from the t ire pressure label
located either on driver 's side B -pillar or inside the fuel fi ller flap . •
Turn the va lve stem cap counter -clockwise to remove it from the
t ire valve .
• Place the air pressure gauge on the valve.
• The tire pressures should only be checked and adjusted when
the tires are cold. The s lightly raised pressures of warm tires must
not be reduced.
• Adjust the tire pressure to the load you are carrying.
• Reinstal l the va lve stem cap on the valve .
When should I check the tire pressure?
The correct tire pressure is especially important at high spe eds . The
pressure should the refore be checked at least once a mo nth and
a lways before starting a journey. Do not forget to check the tire pres ­
sure for the spare whee l
=> page 317.
Wh en should I adjust th e tir e pre ssur es?
Adjust t he tire pressure to the load you are carry ing . After changing
a wheel
o r replacing whee ls you have to ad just the tire pressures on
a ll whee ls . In addition, on vehicles w ith tire pressure monito ring
system* you must then store the new tire pressures in the system
=> page 45.
& WARNING
Incorrect tire pre ssure s and /or underinflation can lead sudden tire
f ai lure , loss of control , collision , seri ous per sonal injury or even
death.
• When the w arning symbol
(l) appe ars in the in strument
clu ster , stop and inspect the tire s.
• Incorrect t ire pres sure and /or underinflat ion can cause
increa sed tire wear and can affect the handling of the vehicle and
s topping ability.
• Incorrect tire pres sures and /or underinflation can also lead to
s udden tire fa ilure , inc luding a blowout and sudden defl ation ,
cau sing los s of vehicle control .
~

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& W ARNING (continued )
• The driver is respon sible for the correct tire pre ssure s for all
tire s on the vehicle. The applicable pressure values are located on
a st icker on the driver 's side B-pillar or on the inside of the fuel
filler flap.
• Only when all tire s on the vehicle are filled to the correct pres­
sure , the tire pressure monitoring system * can work correctly .
• The use of incorrect tire pressure values can lead to accidents
or other damage. Therefore it is essential that the driver observe
the specified tire pressure values for the tires and the correct pres­
sures for the function of the tire pressure monitoring system*.
• Always inflate tires to the recommended and correct tire pres ­
sure before driving off.
• Driving with underinflated tires bend more , letting them get
too hot resulting in tread separation , sudden tire failure and loss
of control.
• Ex cessive speed and /overloading can cause heat build -up ,
sudden tire failure and loss of control .
• If the tire pressure is too low or too high, the tires will wear
prematurely and the vehicle will not handle well.
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to che ck the tire pressure and add air as required .
0 Note
Driving without valve stem caps can cause damage to the tire
valves. To preve nt th is, a lways make s ure th at f acto ry installed va lve
stem caps on al l whee ls are securely mounted on the va lve .
~ For the sake of the environment
Underinflated tires will a lso increase the fuel consumpt io n. •
Tires and vehicle load limits
There are limits to the amount of load or weight t hat any vehic le and
any tire can carry . A ve hicle that i s ove rloa ded will not handle well
and is more d iff icu lt to stop . Overload ing can not only lead to loss
o f vehi cle control, but can also damag e impor tan t p arts o f the
vehic le and can lead to sudden tire failure, including a blowout and
sudde n defla tion that ca n cause the veh ic le to c ra sh .
Your sa fety a nd t hat o f your passe ngers a lso depe nds o n maki ng
s u re that load li mits are not exceeded. Vehic le load incl udes every ­
b ody and everythi ng i n and on t he vehicle . T he se l oa d limi ts are
technical ly referred to as the ve hic le's
Gross Vehicle Weight Rating
("GVW R"l.
T he "GVWR" includes the wei ght of the basic vehic le, all factory
in sta lled acces so ries, a full t an k of f uel, o il, c oolant a nd oth e r flu ids
p lus max imum load . T he maximum load inc ludes th e number o f
p asse ngers tha t th e ve hicle i s intended t o carry ("seat ing ca paci ty")
with an assu med weight o f 150 l bs (68 kg) fo r each passe nger at a
designated seating position and the total weight of any luggage in
th e v ehic le. I f you tow a trai ler, the we ig ht o f the tra iler hitch a nd th e
tongue weight of the loaded trailer must be inc luded as part of the
ve hicle lo ad .
The
Gross Axle Weight Rating ("GAWR") is t he maximum load that
ca n b e app lie d at eac h of th e veh icle's two axle s.
T he G ross Ve hicle We ight Rati ng a nd th e G ross A xle Wei ght R ati ng
are listed on the safety comp liance stic ker label located either on
t he driver 's si de B-pi lla r o r on the in sid e of t he fue l fille r fl ap. You r
Aud i has 5 seating posit ions, 2 in the front and 3 in the rear for total
sea ting ca paci ty of 5. Each sea ting p osit ion has a safe ty b elt
=> page 176, "Saf ety be lts" .
The fact that there is an upper limit to your vehicle's Gro ss Vehicle
W eight Rat ing m eans that th e total weight o f whatever is b ein g
carried in the vehic le (including the weight of a traile r hitc h and the
ton gue we ight of the loaded tr aile r) is lim it e d. Th e m or e passe ng ers
~
Vehicle care

___ T_ ir_e_ s_ a_ n
_ d_ w_ h_ e_ e_l_
s _________________________________________________ _
R ep laci ng tires a nd whee ls
T ires shou ld be replaced at least in pairs and not ind ividually (for
examp le bo th front tires or both rear tires together!.
On v ehicles with tire pressure monitoring system *, be sure to read
and heed the informat ion
=> page 307.
A lways buy rep lacement radia l tires that have the same sp ecifica­
t ions as the tires approved for your veh ic le by Aud i. Replacement
tires must always have the same load rating specification as the
orig ina l equipment or approved optional t ires listed in the table
=> page 297.
Audi -approved specification tires are specially matched to your
vehic le and its load limits, and can contribute to the important road­
holding, driving characteristics, and safety of the vehicle . The table
(=> page 297) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature .
The tire pressure labe l located either on driver 's side 8 -pi llar or
inside the fuel fi ller
flap(=> page 297, fig. 218) lists the specifica ­
tions of the origina l equipment tires installed on your vehicle at the
time it was manufactured .
Federa l law requires tire manufacturers to place standardized infor ­
mation on the s idewall of all
tires => page 305, fig. 221 . This informa ­
tion identifies and describes the fundamental characteristics, the quality grade of the tire and a lso provides a tire identification
number for safety standard certification and in case of a recall.
Tir e specificat ions
Knowledge of tire specifications makes it easier to choose the
correct tires . Ra dial t ires have the tire specifications marked o n the
sidewall, for example :
P235 / 45 R 1 7 94 H
This contains the following informat ion:
P Indicates the tire is for passenger cars (where app licable)
2 35 No minal t ire wid th i n mm of the tire fro m sidewall edge to side ­
wall edge. In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction: Radial
17 Rim diameter code (in inches)
94 Load rat ing code
H Speed rating letter code
X L (or "xi", "EXTRA LOAD" or "RF") indicates that the t ire is a "Rein­
forced" or an "Extra Load" ti re
M +S (or "M/S") Ind icates that the tire has some mud and snow capa -
bility
The tires cou ld also have the information of direction of rotation
=> page 293.
Tire m anuf acturing date
The manufacturing date is a lso indicated on the tire sidewall
(possibly on ly on the
inner side of the wheel):
"DOT ... 2205 . ..
" means, for example, that the tire was produced in
the 22th week of 2005.
S peed r ating (le tt e r code )
The speed rating letter code on the whee ls indicates the maximum
permissible road
speeds => & in "W inter tires" on page 310 .
p up to 93 mph ( 150 km/h)
Q up to 99 mph (158 km/h)
R up to 106 mph (170 km/h)
s up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
u up to 124 mph (200 km/h)
H up to 130 mph (210 km/
h)
V up to 149 mph (240 km/h)3
l
z over 149 mph (240 km/h)31
3> For tires w ith a maximum speed capabi lity over 149 mph (240 km/h) , tire
manufacturers sometimes use the letters " ZR."

Fuses and bulbs -
----------------
0 Note No. Equipment Amps
• On no account should fuses be repaired (e.g. patched up with tin 13 Steering column module 10
foil or wire) as this may cause serious damage elsewhere in the elec -14 Brake lights 10
trical circuit or cause fire.
15 Instrument cluster, Navigation system 10
• If a fuse blows repeatedly, do not keep replacing it. Instead, have
the cause for the repeated short circuit or overload tracked and Garage door opener
5
fixed.
•
Level, tire pressure control, park assist,
17 light/rain sensor 10
Fuse list Automatic headlight range control, left 5
Fuses which can be replaced. 19 Fog lights, rear fog light 15
20
Not used
No. Equipment Amps
21 Not used
1 Air conditioner 10 Front doors 15
2
Footwell illumination 5 23 Rear doors 15
3 Heated washer jets 5 Central convenience electrical system 20
4 Radiator fan 5 25 Heater blower 30
5
Telephone, oil level sensor, multifunction 10 26 Rear window defogger 30
switch, rear heated Seat, shift gate
27 Socket for trailer towing (controller) 30
6
Air conditioner (air quality sensor), air pressure 5 28 Fuel pump 20 sensor
Electronic Stabilization Program (ESP), brake
29 Not used
7 light switch, clutch pedal switch, steering angle 10 Power sunroof 20
sensor Automatic transmission, mirror dimming, diag-
31 15 8 Telephone 5 nosis socket
9 Brake booster (vacuum pump) 15 Towing assembly 15
10
Automatic headlight beam adjustment, auto -5 33 Cigarette
lighter 20
matic headlight range control, right
Electrical socket 20
11
Airbag 5 35 Luggage compartment socket 20
12
Diagnosis socket 10 Windshield wiper system 30
Do -it -yourself service

___ A_l-=- p _h_ a_ b_e _t_ic _ a_l _in _ d_e _x ____________________________________________ _
Starting .. .. .. ...... .... .... 135, 136
Starting with jumper cables ... .... 330
Stopping . .... .... .... ... .... ... 137
Engine compartment ... .. .... .... ... 274
Safety instructions . . . . . . . . . . . . . . . 273
Working the engine compartment .. 273
Engine coolant system . ...... ...... . 280
Adding coolant .. ...... .......... 282
Checking coo lant leve l .. .. .... .... 281
Checking the engine coo lant leve l .. 281
Radiator fan . . . . . . . . . . . . . . . . . . . . . 283
Engine coolant temperature Gauge ...... ...... .... ........... 13
Engine cooling system Ma lfunction .. .... ..... .. .... .... . 31
Engine data ...... .... .... .......... 343
Engine hood Closing . ...... ..... .. .... ...... . 273
How to release the hood . . . . . . . . . . 272
Engine oil ...... .... .... .... ... .... 275
Adding ... .... ... .... .... ...... . 278
Additives . . . . . . . . . . . . . . . . . . . . . . . 278
Changing ... .. .... .... ...... .... 279
Checking the engine oi l level .. .... . 277
Indications and conditions requiring extra
checking ..... .. .... .... ... .... 277
Oil consumption .. .... .... ... .... 277
Oil grades . . . . . . . . . . . . . . . . . . . . . . . 275
Recommended o il check interva ls .. 277
Specification and viscosity . . . . . . . . 275
Engine oil level .. .... .... .... ... .... . 34
Engine oil pressure Malfunction ...... ..... .. .... .... . 32 Engine oil sensor defective
....... .... . 34
Environment Break -in period .. ...... .... .... .. 243
Catalytic converter .. ...... .... ... 244
Disposing of your vehicle battery ... 291
Driving at high speeds .. .... .... .. 245
Driving to minimize pollution and noise . 245
Fuel ... ...... .... ... .. .... .... .. 269
Fuel economy ....... ...... .... .. 245
Leaks under your vehicle ... .... ... 273
Letting the vehicle stand and warm up .. 246
Proper disposa l of drained brake fluid
284
Proper disposal of drained engine
coo lant ...... ............. ..... 282
Proper disposa l of drained engine oil
278 ,279
Recycling used eng ine oil .. .... ... 278
Un leaded fuel ..... .... ... .... ... 267
What should I do with an old battery?
291
EPC
See Electronic power control .. ... .. . 23
ESP
See Electronic stabi ll ization program
(ESP) . ... .... .... ........ ... 22, 236
Event Data Recorder (EDR) .. ....... .. 236
Expansion tank .. .... ... .... .... .... 281
F
Fahrenheit
Switching between Fahrenheit and Centigrade . ...... .... ...... .... 128
Fan Adjusting the fan speed .. ...... ... 129
Climate controls ................. 129
Radiator ...... .... .... ...... .... 283
Fastening eyes ... .... .... .... .... .. 108
Flat tire ............................. 50
Changing .. .... .... ... .... .... .. 318
Flat tire changing .. ...... .... .... .... 50
Floor mats .. ... ... .... .... .... .... . 172
Fog lights ........................... 76
Fo lding master key with remote control . 52
Foot pedals .. .. .. .... .... .... ...... 17 2
For the sake of the environment Gaso line fumes and the environment 269
Letting your engine warm up ....... 136
Reducing engine noise by early upshifting .... .... ... .... .... ... 13
Reducing engine noise by upshift ing
early . .... .... .... ... .... .... ... 13
Refueling .... .... .... ....... .... 269
Saving fuel by early upshifting . .... . 13
Saving fuel by upshifting early .. .... 13
Using the rear window defogger 131, 132
Front airbags
Description . .... .... ... .... .... .. 191
How they work .. .... ... .... .... .. 196
Front ashtray . . . . . . . . . . . . . . . . . . . . . . . 119
Front fog lights .... .... .... .... .... .. 76