2009 AUDI A4 CABRIOLET sensor

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s _ ...... ffllll
•
Tire manufacturing date
The manufacturing date is also indicated on the tire sidewall
(possibly on ly on the
inner side of the wheell:
"DOT ... 2209 ... " means, for example, that the tire was produced in
the 22th week of 2009.
Speed rating (letter code)
The speed rating letter code on the wheels indicates the maximum
permissible road speeds =:,
& in "Winter tires" on page 284.
P up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
R upto 106mph(170km /h)
S upto110mph(180km/h)
T upto118mph(190km/h)
U up to 124 mph (200 km/h)
H upto130mph(210km/h)
V up to 149 mph (240 km/h)
31
Z over 149 mph (240 km/h)3
l
W up to 168 mph (270 km/h)31
Y up to 186 mph (298 km/h)3
l
Your vehicle is normally factory equipped with tires, which possess
excel lent driving characteristics and give your Audi opt imum
driving comfort. An electronic speed limiter=:,
page 28will normal ly
prevent your vehicle from going faster than the tire speed ratin g
=:>& .
U.S. DOT Tire Identification Number (TIN ) and tire
manufacture date
This is the tire's "serial number". It begins with the le tters "DOT"
and indicates that the tire meets all federal standards. The next two
numbers or letters indicate the plant where it was manufactured,
and the last four numbers represent the week and year of manufac-
31 For tires with a maximum speed capability over 149 mph (240 km/h), tire
m anufacturers so metimes use the letters "ZR."
ture. For example, the numbers 2209 mean that the tire was
produced in the 22th week of 2009. The other numbers are
marketing codes that may or may not be used by the tire manufac­
turer . This information is used to contact consumers if a tire defect
requires a recall.
Tire ply composition and materials used
The number of plies indicates the number of layers of rubber-coated
fabric in the tire. In general, the greater the number of plies, the
more weight a tire can support. Tire manufacturers also must indi ­
cate the materials in the tire, which include steel, nylon, polyester,
and others.
Maximum Load Rating
This number indicates the maximum load in kilograms and pounds
that can be carr ied by the tire .
Tire quality grading for treadwear, traction, and
temperature resistance
Tread wear, traction and temperature grades=:, page 283.
Maximum Permissible Inflation Pressure
This number is the greatest amount of air pressure that should ever
be put in the tire under normal driving conditions.
Replacing tires or rims on vehicles equipped with tire
pressure monitoring system*
The wheels on your vehicle are equipped with a sensor which
constantly monitors the air pressure inside the tire, and then trans ­
mits this information to the tire pressure monitoring system*. If you
are going to replace the wheel rims on your vehicle, make sure the
new rims also have these sensors . The sensors must be compatible
with the tire pressure monitoring system* on your vehic le .
If you install rims, which do not have the sensors, or have sensors
which are not compatible, then the tire pressure monitoring
system* wil l not work properly. In this case, the tire pressure moni -.,_
Ve hic le care

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
toring system* would not be able to monitor the tire pressure or
warn you if it is necessa ry.
• T he battery inside of the tire pressure sensor has a limited
service life.
• Always drive with the valve stem caps securely mounted. We
r ecommend us ing facto ry insta lled va lve stem caps. Ask you r autho ­
rized Audi dealer to replace lost va lve stem caps.
T he installation of rep lacement tires with steel cord body p lies in
t he tire sidewall may cause mal functi on of the tir e pressure mo ni­
toring system , and is not recommended (cord material information
in mo lded o n th e ti re sid ewa ll) .
Always check your tire pressure monitoring system * indicator after
r eplacing one or mo re ti res on your veh ic le . I f the ti re p ress ure
m onito ring syste m* ind icator flashes, or is o n, your s ystem is not
wo rking properly . Your replacement t ire might be incompatible with
yo ur tir e pressure mon ito ring system* , o r so me compo nen t of th e
tire p ressure monitoring system * may be damaged .
& WARNING
• Using incorrect or unmatched tires and I or wheels or improper
tire and wheel combinations can lead to loss of control , collision
and serious personal injury .
• Always use t ires , rims and wheel bolts that meet the specifica­
tions of original factory-installed tires or other combinations that
have been specifically approved by the vehicle manufacturer.
• Tires age even if they are not being used and can fa il suddenly,
espe cially at high speeds . Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speed s.
• Never mount used tire s on your vehicle if you are not sure of
their "previous history ." Old used tire s may have been damaged
even though the damage cannot be seen that can lead to sudden
tire f ailure and loss of vehicle control.
& W ARNING (continued )
• All four wheels mu st be fitted with radial tires of the same type,
size (rolling circumference ) and the same tread pattern. Driv ing
with different tires redu ces vehicle h andling and can lead to a loss
of control.
• If the spare tire is not the same as the tires that are mounted
on the vehicle - for e xample with winter tire s - only u se the spare
tire for a short period of time and drive with extra care . Refit the
normal road wheel as soon as safely possible.
• Never drive faster than the maximum speed for which the tires
on your vehicle are rated because tires that are driven faster than
the ir rated speed can fail suddenly .
• Overloading tires cause heat build-up, sudden tire failure ,
including a blowout and sudden deflation and loss of control .
• Temperature grades apply to tires that are properly inflated and
not over or underinflated .
• For te chnical reasons it is not always possible to use wheels
from other vehicle s -in some cases not even wheels from the
same vehicle model.
• If you install wheel trim discs on the vehicle wheels, make sure
that the air flow to the brakes is not blocked. Redu ced airflow to
the brakes can them to overheat , increasing stopping distances
and causing a collision.
• Run flat tire s may only be used on vehicle s that were equipped
with them at the fa ctory . The vehicle must have a cha ssis designed
for run flat tires and a factory -installed tire pressure monitoring
s ystem that indicate s a loss of tire pressure . Incorre ct use of run
flat tires can lead to vehicle damage or accidents . Check with an
autho rized Audi dealer or t ire specialist to see if your vehicle can
be equipped with run flat tires .
If run flat tires are used , they mu st
be installed on all four wheels . Mixing tire types is not permitted. .,

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s _ ...... fflll
•
0 Not e
• For technical reasons, it is not genera lly possible to use the
wheel rims from other vehic les. This can hold true for wheels of the
same vehicle type.
• If the spare tire is different from the tires that you have mounted
on your vehicle (for example winter tires or wide profile t ires), then
use the spare tire for a short period of time only and drive with extra
care. Rep lace the flat tire with the tire matching the others on your
vehic le as soon as possible.
• If you should put different wheels and tires on your vehic le (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatib le with the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault
message will be displayed . For more information, contact your Aud i
dea ler.
0 Note
• When insta lling new tires, be carefu l not to damage the valves or
t ire pressure monitoring system* senso rs.
• Never drive without the va lve stem cap. The va lves could get
damaged.
• If the sensors must be replaced, then the valve must also be
replaced at the same t ime.
Dispose of old tires in accordance with the local requirements .•
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• Temperature A B C Qua
lity grades can be found where applicable on the tire side wall
be tween tread shoulder and maximum section widt h =>
page 279,
fig. 21 1.
For example : Tread wear 200, Traction AA , Temperature A.
All passenger car tires must conform to Federa l Safety Require­
ments in addition to these grades.
Tre ad w ear
The tread wear grade is a comparative rating based on the wear rate
of the tire when tested under con trol led conditions on a specified
government test course.
F o r exam ple, a tire g raded 150 would wear one and one half (1 1/2)
times as well on the government course as a tire graded 100 .
The relative performance of tires depends upon the actual condi ­
tions of the ir use, however, and may depart significantly from the
norm due to variations in driving habits, service practices and differ ­
ences in road cha racteristics and c limate .
Tra ction
The traction grades, from highest to lowest , are AA, A, Band C.
Those grades represent the tire's ability to stop on wet pavement as
measu red under contro lled conditions on specified government
test surfaces of asphalt and concrete. A tire marked C may have
poor traction performance =>
/.1.
Temperatur e
The temperature grades are A (the highest), B, and C, representing
the tire 's resistance to the generation of heat and its ability to dissi ­
pate heat when tested under contro lled conditions on a specified
indoor laboratory test wheel.
Sus tained high temperature can cause the material of the ti re to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure=>
/.1.
The grade C corresponds to a level of performance which all
passenger car tires must meet under the Federal Motor Vehicle
Vehic le care

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Safety Standard No. 109 . Grades Band A represent higher leve ls of
p er forma nce on th e laboratory test w hee l tha n the minim um
required by law .
& WARNING
The traction grade ass igned to this t ire is based on straight-ahead
braking traction tests , and does not include a cceleration ,
c ornering , hydroplaning or peak tra ction characterist ics .
& WARNING
The temperature grade for this tire is established fo r a tire that is
properly inflated and not overloaded. Excessive speed , underinfla­
tion, or exces sive loading , either separately or in combination , can
cause heat buildup and possible tire failure . •
Winter tires
Winter tires can improve veh icle ha ndl ing on sno w and
ic e. A t tem peratures belo w 45 °F (7
°C ) w e rec omm end
c ha ng ing to wint er tir e s.
In some heavy snow areas, local governments may require true
winte r or "snow" tire s, those wi th ve ry deeply cut tread. These tires
should only be used in pairs and be instal led on a ll four wheels .
M ake s ure you p urchase snow ti res that are the same size and
cons truct ion type as the o the r ti res on your v ehicle.
I f your vehic le is equipped with al l-wheel drive*, this will improve
t raction during w inter dr iving, even with the s tandard tires .
H owever, we strongly recommend that you a lways equ ip all four
whee ls on y our vehic le wi th correc tly fitted winte r tires or all-seas on
tires, when winter road conditions are expected. This also improves
th e ve hic le 's brak ing performance and red uces s to ppi ng d ista nce s.
Summer t ires p rov ide less gr ip o n ice and s now. Winter tires (snow tires) must a
lways be fitted on all four whee ls .
I f your veh icle is equipped with a ti re pre ssure monitoring system*,
compatible t ire pressure mon itoring sensors must be installed on
a ll four winte r tires for the system to function properly ~
page 281.
Ask your aut hori zed Audi dealer or quali fied wo rksho p for perm itte d
winter tire sizes . Use only radial winter tires.
Winter tires lose thei r effec tive nes s when the tread is wo rn down t o
a depth of 0.157 inch (4 mm).
On ly drive with winter tires unde r winter conditions. Summer tires
h andle be tter w hen th ere is no s now o r ice on t he roads a nd the
temperature is above 45 °F (7 °C) .
I f you have a flat tire, see n otes on s pa re whee l~
page 279.
Please a lways remember that w inte r tires may h ave a lowe r speed
rating than the tires original ly instal led on yo ur vehic le at the time
i t was manu fac tured. Please see~
page 281, "Speed rating (letter
code)" for a listing of the speed rating letter codes and the
m ax imum speed at wh ic h th e tir es ca n be d riven .
The speed rating letter code(~
page 270) is on the side wa ll of the
ti re ~
page 279.
& WARNING
Winter tires have maximum speed limits that may be lower than
your vehicle's maximum speed . Always know the maximum speed
before driving off . Never drive faster than the speed permitted for
your specific winter tires . This will cause damage to the tires
leading to an accident and serious personal injury to you and your
pa ssengers.
& WARNING
Driving faster than the maximum speed for whi ch the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation , los s of control , crashes and seriou s
~

_____________________________________________ W_ h _a_t _ d_ o_ l _d _o _ n_o_ w_ ?_ . _ .... I'll
•
• Check the tire pressure on the spare immediately after
mounting.
• Have the wheel bolt t ightening torque checked with a torque
wrench as soon a s possible by your authorized Audi dealer or a
qualified se rvice station .
• On steel and alloy wheel rims , the wheel bolts are correctly tight­
ened with a torque of 90
ft lb 1120 Nm ).
• If you notice while changing a tire that the wheel bolts are
corroded and diffi cult 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 vehicle with tires or r ims which
differ from those which were factory installed , then be sure to read
the information
~ page 279 , "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 ,
injur ing anyone in the vehicle .
• Always store damaged wheel , jack and tools securely in
luggage compartment . Otherwise , in an accident or sudden
maneuver they could fly forward, causing injury to passengers in
the vehicle .
0 Note
Do not use commercially availab le ti re sealants. Otherw ise, the elec ­
t rica l compo nents of t he tir e pressure mon itor ing sys te m * w ill no longer work properly and the sensor for
the tire pressure moni ­
t o ring syste m will have to be re placed by a q ual ified work shop.•
Do-it-yourself service

_________________________________________________ F_ u_ s_ e_s _ a_n _ d_ b_ u_lb _ s ____ llll
[ i ] Tip s No . Equipm ent Amps
You are wel l adv ised to keep a supply of spare fuses in your vehic le.
15 Instrument c luster, Navigation system 10
Fuses with the proper ampere ratings are available at your Audi 16 Garage door opener 5
dea ler. •
17 Level , tire pressure control , park assist, 10 light/rain sensor
Fuse list Automatic headlig ht range control, left 5
Fuses which con be replaced. 19 Fog lights 15
Vacant
N o. Equipm ent Amps
21 Vacant
1 Air conditioner 10
22 Doors 15
2 Footwell illumination 5 23 Vacant
3 Heated washer jets 5 Central convenience electrical system 20
Radiator fan 5 25 Heater blower 30
5
Telephone, oil level sensor, multifunction 10 Rear window defogger 30 switch, rear heated seat, shift gate
Air conditioner (air quality sensor), air pressure
27 Socket for tra iler towing (controller) 30
6 5
sensor 28 Fuel pump 20
Electronic Stabil izat ion Program (ESP), bra ke 29 Vacant
7 light switch, clutch peda l switch, steering angle 10
sensor
30 Power top control un it 30
8 Telephone 5 31
Automatic transmission, mirror dimming, diag-15 nosis socket
9 Brake booster (vacuum pump) 15 Towing assembly 15
10
Automatic headl ight beam adjustment, auto -5 33 Cigarette
lighter 20 matic headlight range control, right
34 Electrical socket 20
11
Airbag control unit, front passenge r seat recog -10 nition USA (bladder mat) 35 Luggage compartment socket 20
Diagnosis socket 10 Windshield wiper system 30
13
Steering c olumn module 10
37 Pump for windshie ld an d head light washer* 30
14
Brake lights 10
system
• Do-it-yourself service

llffl __ A_l-=- p _h_ a_ b_e _t_ic _ a_l _in _ d_e _x ____________________________________________ _
A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 318
Acoustic park assist . . . . . . . . . . . . . . . . . 122
Adaptive Light Air outlets
Climate controls .. .... ...... ..... 115
How should I adjus t the air outlets to de­
frost my windows as quickly as
possible? . . . . . . . . . . . . . . . . . . . . . . 115 Warning/indicator lights
... ... .... .. 20
When must the system be inspected? . ..
179
All Wheel Drive ... .... .... ...... .... 218
Alloy wheels . . . . . . . . . . . . . . . . . . . . . . . 237
defective ............. ........ .. . 34 Air quality sensor .
.... .... .... .... .. 114 All-whee l drive
adaptive light .. ... .... .... ... ...... . 79 Air recirculation
............... ..... 113
Winter tires .. ......... .... .... .. 284
Adding Engine coolant ... .... .... ...... .
259
Engine oi l ..... .... ... .... .... .. .
255
Windshield washer fluid .... .... . .
266
Additiona l accessories .. ...... ...... . 318
Additives Engine oil . ..... .. ..... ... ...... . 255
Adjusting Instrument cluster illumination .. .... 15
Steering wheel co lumn .... ... .... 118
Adjusting the seats
Manual seats ...... .... ........... 94
Advanced Airbag System . . . . . . . . . . . . 172
Children ... ........... .... ... ... 191
Components ...... .... .......... 175
Front airbags . . . . . . . . . . . . . . . . . . . . 173
How the components work together 176
Monitoring . . . . . . . . . . . . . . . . . . . . . . 179
Weight -sensing mat . .... ... .. .... 191
Air conditioning
See Climate controls . . . . . . . . . . . . . . 110
Air distribution Clima te con trols ... .... ... .... ... 114 Climate controls
...... ...... ... .. 114 Alternator
When should I use the air recircu lation?
114
Air ventilation in the glove compartment ...
108
Airbag system ..... ... .... ..... . 168, 188
Care ... ... .... .... .... .... .... .. 182
Child restraints .............. .... 192
Components (front airbags) .. ... ... 175
Danger of fitting a child safety seat on the
front passenger seat . . . . . . . . . . . . 170
Disposal . . . . . . . . . . . . . . . . . . . . . . . . 182
Front airbags . ....... ..... .... ... 172
How do the front airbags work? . . . . 177
How many airbags does my vehicle have? 175
Important safety instructions on the knee
airbag system .... .... .... .... .. 186
Important things to know ... .... .. 168
Indicator light ... .......... ... ... 179
Knee airbags .... . .. .. ........... 184
Monitoring .... .... .... .... .... .. 179
PASSENGER AIR BAG OFF light ..... 180
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . 182
Side airbags . . . . . . . . . . . . . . . . . . . . . 187
See Generator . . . . . . . . . . . . . . . . . . . . 22
Anti -freeze
S ee Engine coolant system .. ...... 257
Anti-glare inside day-night mirror ...... 88
Anti-lock brake system How the ABS system works . .... ... 216
Warning/indicator lights ........... . 20
An ti- Slip Regulation System (ASR)
How the sys tem works .. ... .... ... 214
Anti-Theft Alarm System Tilt sensors ..... ....... ..... ...... 58
Anti-theft alarm system .. .. .. .... .... . 57
Anti -theft systems
Electronic immobilizer ......... .... 49
Armrest Adjusting ...... .... ..... .. ..... . 100
Storage bin
Ashtray 100
Front ....... .................... 104
Rear .......... .... .... ........ .. 105
Asterisk What does it mean when something is marked with an asterisk? . ..... ... .. 6
Audi Service Repair Manuals and Literature 316

IIPJI Alphabetical index _ __,__ ___ ____;_...::.:...::... ___________________________ _
Hood ...... ... ...... .. ... .. .. ... 249
Starting .. .... .... ....... ... 119,120
Starting with jumper cables ....... 304
Stopping . . . . . . . . . . . . . . . . . . . . . . .
120
Engine compartment
Safety instructions . . . . . . . . . . . . . . .
250
Working in the engine compartment 250
Engine coolant .................. ... 258
Checking the engine coo lant level .. 258
Malfunction warning symbol ... ..... 31
Engine coolant level
Checking ... .. .... .... ..........
258
E . I
ngine coo ant system ... .... ....... 257
Adding coolant .................. 259
Radiator fan . . . . . . . . . . . . . . . . . . . . . 260
Engine coolant temperature
Temperature gauge ....... .... ....
13
Engine data ...... ............... ... 314
Engine hood Closing ... .... ... .... .... ...... .
250
How to release the hood . . . . . . . . . . 249
Opening .. .... .... ....... .... ... 249
Engine oil ... ... .... .... .... ... .... 252
Adding ... .. ...... ... .... ...... . 255
Additives . . . . . . . . . . . . . . . . . . . . . . . 255
Changing . .............. ........ 256
Checking the engine oil level ...... . 254
Indications and conditions requiring extra
checking .... .... ....... .... ...
254
Indicator light . . . . . . . . . . . . . . . . . . . . 33
Oil capacity . . . . . . . . . . . . . . . . . . . . .
314
Oil consumption ................. 254
Oil grades . . . . . . . . . . . . . . . . . . . . . . . 252
Recommended oil check intervals .. 254
Sensor defective . . . . . . . . . . . . . . . . . . 33
Specification and viscosity ...... ..
252
Engine oil pressure
Malfunction .. ....... ..... ... .... . 32
Environment Break -in period .... .... .... .... ..
219
Catalytic converter .... .... .... ... 220
Disposing of your vehic le battery ...
262
Driving at high speeds ...... .... .. 221
Driving to minimize pollution and noise .
221
Fuel ......... .... ... .. .... .... .. 246
Fuel economy ....... ...... ...... 221
Leaks under your vehicle . ...... ... 250
Letting the vehicle stand and warm up
222
Proper disposa l of drained brake fluid
261
Proper disposal of drained engine
coo lant ..................... ...
259
Proper disposa l of drained engine oil
255,256
Recycling used eng ine oil ......... 255
Unleaded fuel ... .... ..... .... ... 244
What should I do with an old battery?
262
EPC
See Electronic power control .. ... .. . 22
ESP Electronic stabi lization program ....
212
See also Electronic stabilization program
(ESP) . ... .... .... ........ ......
212
Event Data Recorder (EDR) .. ....... .. 212
Expansion tank .. .. .. .. .. .... .... ... 258
F
Fahrenheit
Switching between Fahrenheit and Centigrade ... .... ..............
113
Fan
Climate controls ... ....... .... ...
114
Radiator ...... .... ........... ... 260
Setting the fan speed 114
Flat tire
Changing .. .... .... ............. 293
Floor mats
Fog lights
153
Front ....... ...... .... ........ ... 79
Folding master key with remote control . 47
Foot pedals . ... .. .... .... .... ...... 152
For the sake of the environment
Gaso line fumes and the environment
246
Letting your engine warm up ....... 120
Reducing engine noise by early
upshifting ......................
13
Refueling ......... ...... ........ 246
Saving fuel by early upshifting . ..... 13
Using the rear window defogger ....
116
Front airbags
Description ......................
172
How they work ..... .... ....... ... 177
Front ashtray . . . . . . . . . . . . . . . . . . . . . . . 104
Front seat adjustment
Safety guide lines .................. 92