check engine light AUDI A5 COUPE 2010 Owner's Manual

•---=C:.:h..:. e=-= c..:.k :..:.in :..:.:= g:.....= a..:.n :.:d::....:. f.:.:il .:.:li ..:.n :..::g~ --------------------------------------------
0 Not e
• Coolant pollutes the environment and cou ld cause an engine
fire. Excess coolant will be forced out through the pressure relief
valve in the cap when the engine becomes hot.
• If, in an emergency, only water can be added, the correct ratio
between water and antifreeze ~
page 277 must be restored as soon
as possible .
ci> For the sake of the environment
Dra ined coolant should not be reused . Always dispose of used
coolant whi le observing all environmental regulations. •
Radiator fan
The radiator fan switches on automatically by itself.
The rad iator fan is driven by the eng ine v ia the V-be lt . The v iscous
clutch regulates the speed of the fan according to the tempera ture
of the coo lant .
An auxiliary electric radiator fan * swi tches on and off depending on
coo lant temperature and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue running for up to 10 minut es -even with th e igni tion o ff. It can even
switch o n again later by itself~ & , if
• the temperature of the engine coo lant rises due to the heat
bui ld -up from the engine in the engine compartment, o r
• the engine compartment heats up because the vehic le is parked
in intense sun light.
& WARNING
• To reduce the ri sk of per sonal injury never tou ch the radiator
f a n.
& W AR N ING (continu ed )
• The auxiliary e le ctri c fan i s temperature controlled and can
s w itch on suddenly even when the engine is not running .
• The auxiliary radiator fan swit ches on automatically when the
engine coolant reache s a ce rtain temperature and will con tinue to
run until the coolant t emperatur e drop s. •
Brake fluid
Checking brake fluid level
Th e brake fluid level c an be checked with a quick glance.
Fig . 22 6 En gin e
co mp art m ent : B ra ke
fl uid re servoir
Befo re yo u c heck anything in th e en gin e compar tme nt,
always read and heed all WARNINGS~ & in "Working in
the eng ine compartment" on
page 271 .
Read the brake fl uid level from the bra ke fluid reservoir
~ fig . 226. T he b rake fluid leve l must be betwee n the
" M IN " and "MAX" markings.
The brake fluid reservoir is located at the rear partition of the engine
compartment on the left side~
page 272 . .,_

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
Have the battery checked when you take your vehicle in for service.
You are well advised to replace a battery that is older than 5 years.
With certain types of airbag deployment, the battery is discon­ nected from the vehicle electrical system for safety reasons=>
& in
"Repair, care and disposal of the airbags" on
page 202.
Disconnecting the battery terminals
Some vehicle functions (power window regulators, for example) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the battery terminals are connected again . To
prevent this, the battery should only be disconnected from the
vehic le electr ical system when absolute ly necessary for repairs .
Vehicles not driven for long periods
If you do not drive your vehicle over a period of several days or
weeks, electrical components are gradually cut back or switched off.
This reduces energy consumption and maintains starting capability
over a longer period=>
page 241.
Take into consideration that when you unlock your vehicle, some
convenience functions, such as the master key remote function or power seat adjustment, may not be available. The convenience
functions will be available again when you turn on the ignition and start the engine .
Winter operation
During the winter months, battery capacity tends to decrease as
temperatures drop . This is because more power is also consumed
while starting, and the headlights, rear window defogger, etc., are
used more often.
Avoid unnecessary power consumption, particularly in city traffic or
when traveling only short distances . Let your authorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
=>
page 284 . A well charged battery will not only prevent starting
problems when the weather is cold, but will also last longer.
[ i ] Tips
If your vehicle is left standing for several weeks at extremely low
temperatures, the vehicle battery should be removed and stored
where it will not freeze. This will prevent it from being damaged and
having to be replaced. •
Working on the battery
Be especially careful when working on or near the battery.
The battery is located in the luggage compartment under
the floor. Before you check anything in the luggage
compartment,
read and heed all WARNINGS =:>& .
Always heed the safety warnings, when working on the vehicle
battery or the vehicle electrical system to prevent injury.
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre­
cautions when working on the battery.
Always wear eye protection .
Battery acid contains sulfuric acid. Always wear
gloves and eye protection.

Checking and filling 111111
---------------------------=----
•
®
No
-sparks
- flames
- smoking .
When a battery is charged, it produces hydrogen
gas which is explosive and could cause personal
injury .
Always keep the battery well out of reach of chil­
dren .
_& WARNING
Whenever working on the battery or on the electrical system ,
there is the risk of injury , accident and even fire . Read and heed the
following WARNINGS:
• Always wear eye protection . Do not let battery acid or any lead
particles get on your skin or clothing. Shield your eyes. Explosive
gases can cause blindness or other injury.
• Battery acid contains sulfuric acid . Sulfuric acid can cause
blindness and severe burns .
- Always wear gloves and eye protection . Do not tilt the
battery because acid could leak out of the ventilation openings .
- If you get battery acid in your eyes or on your skin, immedi ­
ately rinse with cold water for several minutes and get medical
attention.
- If you should ingest any battery acid , seek medical attention
immediately.
• Do not expose the battery to an open flame, electric sparks or
an open light.
• Do not smoke .
• Do not interchange the positive and negative cables .
• When working on the battery , be sure not to short -circuit the
terminals with tools or other metal objects . This would cause the
& WARNING (continued)
battery to heat up very quickly, which could lead to damage or
explosion and personal injury.
• When a battery is charged , it produces hydrogen gas which is
explosive and could cause personal injury .
• Always keep the battery well out of the reach of children. • Before work is done on the electrical system, disconnect the
negative ground cable .
• Before performing any work on the electrical system , switch off
the engine and ignition as well as any electrical equipment. The negative cable on the battery must be disconnected. If you are just
going to replace a light bulb, then it is enough to switch off the
lights.
• Before disconnecting the battery , switch off the anti -theft
alarm system! Otherwise you will set off the alarm .
• When disconnecting the battery , first disconnect the negative
cable and then the positive cable .
• Before reconnecting the battery, make sure all electrical
consumers are switched off . Reconnect the positive cable first and
then the negative cable . Never interchange the cables -this could
start a fire !
• Never charge a frozen or a thawed -out battery. It could
explode! If a battery has frozen, then it must be replaced . A
discharged battery can freeze over at 32 °F (0 °CI.
• Make sure the vent hose is always attached to the opening on
the side of the battery.
• Never use batteries which are damaged . There is the danger of
an explosion! Always replace a damaged battery .
_& WARNING
California Proposition 65 Warning:
Vehicle care
I t •

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
Windshield/headlight * washer
container
F ig . 228 Engi ne
co mpa rtm ent: Wi nd­
s hiel d and hea dlight*
w ash er flui d cont ain er
The washer fluid containe r is marked with the symbol¢ on
its cap .
- Before you check anything in the engine compartment,
always r ead and heed all WARNINGS ~
& in "Working
in the engi ne compartment" on
page 271.
- Lift the filler cap tongue to add washer fluid. You can fill
the container to the top.
- Press the cap back onto the filler neck after filling the
container.
You can find the reservoir ca pacity in the table in=> page 337.
To prevent lime residue from building up on the spray jets, use
distilled water when refil ling . Always add a glass cleaner solution
(with frost protection in the winter).
(D N ote
Do not mix engine coolant antifreeze or any other additives to fill up
the windshield washer reservoir. •

________________________________________________ E_ m ___ e_r.::g ~e ___ n_c ~y:.- s;_ i_t _u :...:a:..:. t.:.: i...:o :...:n...:..:. s _ __,J_
& WARNING !continued)
• Before you check anything in the engine compartment, always
read and heed all WARNINGS~ page 263, "Engine compartment".
0 Note
• Applying a higher voltage booster battery will cause expensive
damage to sensitive electronic components, such as control units,
relays, radio, etc .
• There must be no electrical contact between the vehicles as
otherwise current could already start to flow as soon as the positive
(+) terminals are connected.
[ i) Tips
• The discharged battery must be properly connected to the
vehicle's electrical system. When jump starting or charging the
battery , never connect the negative ground cable to the battery
negative post because the battery manager system must be able to
detect the battery's state of charge. Always connect the negative
ground cable to the negative ground post of the battery manager
control unit .•
Use of jumper cables
Make sure to connect the jumper cable clamps in exactly
the order described below!
Fig. 251 Engine
compartment : Connec·
tors for jumper cables
and charger
Fig. 252 Jump starting
with the battery of
another vehicle: @
discharged vehicle
battery,
© booster
battery
The procedure described below for connecting jumper
cables is intended to provide a jump start for your vehicle.
Vehicle with discharged battery:
Turn off lights and accessories, move lever of automatic
transmission to
N (Neutral) or P (Park) and set parking
brake.
~
Vehicle care Do-it-yourself service irechnical data

llffl __ A_l.:. p _h_ a_ b_e _t _ic _ a_l _in _ d_e _x ____________________________________________ _
Care of exterior ... .. ... ... ... ... ... . 252
Cargo area
See Loading the luggage compartment ..
175
Cargo net .... .... ................... 79
Catalytic converter . . . . . . . . . . . . . . . . . . 244
Center armrest Adjusting ........................ 78
Storage compartment ........ .... . 78
Certification . . . . . . . . . . . . . . . . . . . . . . . 342
Changing a flat tire .. .... .... ....... 312
Changing a wheel ................... 312
Changing engine oi l ...... .... .... ... 276
Chassis Undercoating . . . . . . . . . . . . . . . . . . . . 258
Checking Engine coolant level .. ...... ...... 278
Checking tire pressure .... .... .... ... 293
Child restraint system anchors ........ 227
Child restraints Danger of using child restraints in the
front seat . . . . . . . . . . . . . . . . . . . . . . 190
Where can I get additional information
about child restraints and their use? ...
232
Child safety ................... .... . 213
Convertible locking retractor . . . . . . . 223
Important safety instructions for using
child safety seats .... .... ... .... 216
Important things to know when driving with chi ldren ................... 213
Installing a child restraint using the
LATCH system .................. 229 Lower
anchorages ... ...... ...... . 228
Mounting and releasing the anchorage hook .. .............. ....... ... 229
Tether anchors .. ...... .... .... .. 230
Tether straps ........ ....... ..... 230
Child safety seats ... ........... ..... 218
Booster seats .. ... .... ........ ... 221
Convertible chi ld seats ............ 219
Convertible locking retractor . ...... 223
Danger of using child restraints in the
front seat . . . . . . . . . . . . . . . . . . . . . . 190
How do I properly install a child safety
seat in my vehicle? ........ ...... 216
Infant seats ...... ........ ....... 218
Installing ....................... 223
LATCH system . . . . . . . . . . . . . . . . . . . 229
Safety instructions .... ...... ..... 216
Cigarette lighter ........ ....... ...... 87
Cleaning Alcantara® (synthetic suede) . ..... 262
Engine compartment ....... ... ... 263
Fabrics and fabric coverings ..... .. 259
Instrument panel ................. 260
Interior .. .... .... ... .. .... .... .. 259
Leather ......................... 261
MMI display ..................... 259
MM I termina l .. ... .... .... .... ... 259
Plastic and vinyl .. .. ......... ... . 256
Plastic parts . . . . . . . . . . . . . . . . . . . . . 260
Safety be lts ...... ....... ........ 263
Trim strips . ........... .... ...... 255
trim strips ... .. ........ .... ... ... 256
Cleaning and protection .. ........ ... 252
Clock ........ .... ...... ....... ...... 10 Coat hooks
. . . . . . . . . . . . . . . . . . . . . . . . . . 89
Co ld tire inflation pressure .... ....... 291
Compact spare tire .................. 311
See also Spare tire ........ ...... .. 311
Compass mirror . ...... .. .... .... .... 67
Comp liance ...... .... ....... .... ... 342
Consumer Information .... ... ... . 177, 339
Contacting NHTSA ... .... .... .... ... 177
Convenience closed ... ....... ........ 49
Convenience key ..................... 44
START ENGINE STOP button ... 110, 111
Starting engine .... ....... .... ... 110
Switching engine off .............. 111
Switching on ignition ............. 11
O
Unlocking and locking vehicle ... ... . 44
Convenience opening ...... ........... 49
Convertible child safety seats ...... ... 219
Convertible locking retractor Activating .. ....... .... ...... .... 225
Deactivating ..................... 226
Using to secure a child safety seat .. 223,
225
Coolant system ..................... 277
Cooling System Expansion tank .... ........... ... 278
Cornering light ...................... 57
Cruise contro l
Changing speed . ...... .... .... .. 116
Preselect speed .. ...... ..... .. ... 116
Switching off ... .. .... .... .... ... 116
Switching on ...... ........... ... 115
Warning/indicator lights ... .. ...... . 15
Cruising range ................... .... 23

ffl Alphabetical index ----=------...:..:...::... ___________________________ _
Electronic immobilizer .... ...... ... 11, 41
Electronic power contro l
(EPC) warning/indicator light .. .... .. 13
Electronic stabilization program (ESP) How the system works . . . . . . . . . . . . 234
Warni ng/indicator lights ........... 13
Emergency braking .... ..... .. ...... 114
Emergency flasher . . . . . . . . . . . . . . . . . . . 57
Warning/indicator lights ........... 14
Emergency key . . . . . . . . . . . . . . . . . . . . . . 38
Starting engine .... ....... ........ 41
Emergency locking of the doors ........ 47
Emergency release Selector lever . . . . . . . . . . . . . . . . . . . . 154
E . mergency starting . . . . . . . . . . . . . . . . . 326
Emergency towing .................. 329
Emergency un locking
Ignition key ...... .... .... .... .... 40
Energy management ...... ... ... .... 241
Battery power . . . . . . . . . . . . . . . . . . . 242
Driver notification . . . . . . . . . . . . . . . . 242
Engine Compartmen t ........ ...... . .. .. 272
Coolant .. .... ..... ... ... .... .... 277
Hood ...... ........... ....... ... 270
Starting .................. ...... 108
Starting with jumper cables ....... 326
Stopping ....................... 109
Engine compartment Safety instructions . . . . . . . . . . . . . . . 271
Working the engine compartment .. 271
E . I ngme coo ant system .... ... ... .. ... 277
Adding coolant ... .... ...... ..... 279
Checking coo lant level .. .... .... .. 278
Check ing the engine coolant level .. 278
Malfunction ......... .... ......... 30
Radiator fan ...... .... .... .... ... 280
Engine coolant temper.ature
Temperature gauge ...... .... ..... . 8
Engine data .. ................ ...... 337
Engine hood Closing .. .... .... ... .. .... ...... 271
How to release the hood . . . . . . . . . . 270
Engine oil .......................... 273
Adding ......................... 275
Additives .. ....... .... ...... .... 275
Changing . .... .... .... .... .... .. 276
Check oil level ............. ...... 275
Consumption ... .. ............ ... 275
Oil consumption ................. 274
Oil grades ... .. ...... .... ... .. ... 273
Specification and viscosity ...... .. 273
Engine oil level ...................... 36
Engine oil pressure Malfunction .. .... ....... ......... 31
Engine oil sensor defective ............ 36
Engine speed limitation ............... 36
Environment Break -in period .... ........ ...... 243
Catalytic converter ........ ....... 244
Disposing of your vehicle battery ... 285
Driving at high speeds .... ... .. ... 246
Driving to minimize pollution and noise 245 Fuel ..
...... ... .. . ... .... .... ... 267
Fuel economy ... ....... .... ...... 245
Leaks under your vehicle ....... ... 271
Letting the vehicle stand and warm up ..
246
Proper disposal of drained brake fluid
281
Proper disposal of drained engine coolant ... .. ...... ... .. ... .... . 279
Proper disposal of drained engine oil ....
275 ,276
Recycling used engine oi l ...... ... 275
Unleaded fuel ........ .... .... ... 265
What should I do with an old battery?
285
Environmental note Rear window defogger .. ....... 95, 102
Roof rack ... ... .. .. .. .... .... .... 85
EPC See Electronic power control .... .... 13
ESP See Electronic stabi lization program
(ES P) ... ......... ... ............ 13
Event Data Recorder (EDR) ............ 234
Expansion tank ..................... 278
Eyeglasses compartment .............. 89
F
Fan
Deluxe automatic c limate control .... 93
Deluxe automatic climate control plus ...
100
Radiator ........ ... .. .... .... ... 280

Alphab eti ca l ind ex -____________ _,_ __ _
Luggage compartment . .... .... . .... .. 78
Cargo net ..... .. .... .... ...... ... 79
Enlarging ....... ..... ... ...... 80, 81
Loading . ...... ... ... .... .... .... . 78
Ski sack .. .... ........... ........ . 82
Tie -down rings ... .... ...... .... ... 79
Trunk pass -through . ... .. .... .... .. 83
See also Loading the luggage
compartment ... .... .... ....... . 175
See also Luggage compartment ... .. 78
M
Maintenance ....................... 339
Malfunction Indicator Lamp (MIU .. .. 15, 22
Manual transmission ................ 147
Master key Battery replacement ............... 39
Check light ....................... 39
Master key with remote control ...... .. 38
Mechanical emergency closing function Panoramic tilting sunroo f ..... .... .. 52
Mechanica l key ..... ..... .... .... .... 40
Memory fo r driver's sea t .... .... .... .. 74
Recalling settings ... .... .... .... .. 75
Storing settings .. ........ ........ . 75
Mi leage
Average ... .. .... .... .... ..... .. .. 23
I nstantane ous . ....... ... .... .... . 23
Mirrors Activating the digita l compass .. ... . 67
Adjusting the anti -g lare ... .... ..... 64
Controls and equip­
ment Safety first
Automatic dimming for the outside
m irr ors ... .. .... .... .... ... .... . 66
Automatically dim ming inside mirror . 64
I nside rear view mirror ... .... .... .. 63
I nter ior mirror .. ...... .... ... .... . 64
Manual glare dimming .... .... ..... 63
Outside mirrors ................... 65
Moni to ring the Advanced Airbag Sy stem
199
N
Natural leather ... .... ...... ... ...... 260
New tires and whee ls ..... .... .... ... 299
NHTSA Contacting ...................... 177
N umber of seats . ..... ... .. ... ...... 179
0
Occupant seating pos itions ........... 170
Octane rating .... ...... .... ... .. .... 265
Odometer ............... ........ .... 11
Oil
See Engine oi l ............. ... 273, 275
O il consump tion .. ...... .... .... .... 275
On -Board Diagnostic System (OBD)
Data Link Connector (DLC) . ......... 22
Electronic speed limiter ...... .... .. 23
Malfunction Ind icator Lamp (MIU ... . 22
Open door or rear lid warning . ........ . 21
Operate y our vehicle econom ically and mini -
mize po llution .................. 245 Optional equipment
Marked with an asterisk ... .... .... .. 5
Outside mirrors ...... .... .... .... .... 65
Outs ide temperature display .. ......... 19
Owner 's manual
How the Owner's Manua l is organized . 5
p
Paint
Touch -up ... .... ... .. .... .... .... 256
Paint No .. .... .... .... ... .... .... ... 33 4
Panoramic sunroof Conven ience openi ng/closing ... .... 49
Panoramic tilting sunroof .. ..... .. ... .. 5 1
Mechanical emergency closing function 52
Tilt ing and c losing .. ...... .... ... .. 51
Park assist ......................... 155
Rear ... .. .... .... .... ... .... .... 155
Rear, with r ear view camera ....... . 157
Parking ............................ 113
Automatic transmission .... ... .... 148
Valet parking .... ..... ... .... ..... 50
Parking brake .... .... ... .... .... .... 112
See also Electromechanica l parking brake
112
P arking system .......... .... ...... . 155
Rear ............................ 155
Rear, with rear view camera .... ... . 1 57
Parking System (rear) Adjusting the warning tones ....... 156
Parking system (rear) ... .. ...... .... . 155
Vehicle operation Vehicle care Do-it-yourself service Technical data

-Alphabetical index
---=------------------------------------------------
Safety tips . . . . . . . . . . . . . . . . . . . . . . 143
Sensor de tection area . . . . . . . . . . . . 137
Side curtain airbags ...... .... ..... .. 210
Description . ...... .... .......... 210
How th ey work . . . . . . . . . . . . . . . . . . . 211
Safety instructions . . . . . . . . . . . . . . . 211
Side marker lights . . . . . . . . . . . . . . . . . . . 53
Ski sack . ....... ... .. ...... ... .. .... 82
See also Trunk pass-through ..... .. . 83
Snow chains . . . . . . . . . . . . . . . . . . . . . . . 305
Sound system disp lay
Driver information display . ... .. .... 19
Sources of information abou t child restrain ts
and their use ..... .... ... ..... .. 232
Spare tire . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Speed rating letter code . . . . . . . . . . . . . 300
Speed warning system .. ..... .. ...... 26
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 11
Starting engine Emergency key .. ...... ....... .... 41
Starting from rest .... .... .... ... .... 113
Starting of f with a trailer . ............ 114
Starting the engine .......... .. .. ... 108
Steering . ...... .. .... ....... .... . 13 ,33
Locking the stee ring . . . . . . . . . . . . . . 108
Malfunction .. ...... ... .. .... .... . 32
Manual ly ad justing the steering whee l
107
Steering wheel column Adjusting manual ly ... .... .... .... 107
Steps for determining
correct load limit 296
Stopping the engine . .... .... ... .... 109 Storage .
.... ... ... . .. .. .. .. ........ 88
Glove compartmen t ......... ...... 89
Storage
net .......... .... ........... 79
Sun shade ..... .. ...... ...... .... ... 60
Sun v isors ... .... ...... ........ ..... 60
Switches Emergency flashers . . . . . . . . . . . . . . . 57
Symbols Red .. ...... ........ .... ..... .... 28
Yellow . ... ..... .. .. .. .... .... .... 32
T
Tachometer ...... .... ..... .. .... .... . 9
Technical modifications .. ... .... ... .. 342
Tether anchors ...... ............ ... 230
Tether str ap . . . . . . . . . . . . . . . . . . . . . . . . 230
The first 1,000 mil es (1,500 km) and
afterwards ... ..... .... .... ..... 243
Tie-down rings ...... ..... ..... .. .... 79
Tie -downs ........ ... .... .... ... 79, 177
tiptronic ..... .... .. .. ... ..... .. . ... 147
Automatic Shif t Lock (ASU . ....... . 150
Driving ............. .... ...... .. 148
Dynamic shift program . .... .... ... 151
Fail-safe mode ................... 153
Kick-down ......... ........ ... ... 151
Manual shift program .......... ... 152
Se lector lever . . . . . . . . . . . . . . . . . . . . 149
Tire pressure . .... .... ... .... .... ... 293
Tire pressure mon itoring syst em
Loss of ai r pr essur e .. ... .. .... 14,307
Malfunction . ........... ....... .. 307 Resetting tire pressures
... ..... .. . 309
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . 301
Tires and wheels ..... .. ...... .... 301
Valves .. .. ... ... .... .... .... .... 301
Tire se rvice life .... .... ... .... .... .. 297
Tires .... ..... .... ....... .. .. ..... . 287
Replacing .. ... .... .... .. . .... .. . 301
Service life .. ...... .... .......... 297
Speed rating letter code .. ......... 300
Tire manufacturing date .. ...... ... 300
Tire specifications ........ .. .... .. 300
Tread depth .... .... ... .... .... .. 297
Uniform tir e quality grading ...... . 303
Winter tires ...... ... .. ...... .... 304
Tires and vehicle load limits .. .. .... .. 295
Tires and wheels
Checking tire pressure .. ... .. ..... 293
Co ld tire inflation pressure ....... . 291
Dimensions .. ...... ... .. . .... ... 299
Genera l notes ... ....... ...... .... 287
Glossary of tire and loading terminology .
288
New tires and whee ls ... .... .... .. 299
Replacing ..... .... .... .. . .... .. . 299
Snow chains .................. ... 305
Tire pressure monitoring system . .. 301
Tires and vehicle load limits .... .. . 295
Wheel bolts ... .... .... .. . .... .. . 305
Winter tires ................... .. 304
Tires/Wheels Low aspect ratio tires ..... .... .... 306
Tire pressure monitoring system 14, 307
Tool kit .. ...... .... ....... ...... ... 310