key battery AUDI A5 CABRIOLET 2010 User Guide

Intelligent technology
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vi dual components. It regulates consumption, so that more electrical
energy is not being used than is being generated and ensures an
optimal state of charge for the battery .
[I] Tips
• But even energy management cannot negate the limits of physics.
Consider that the power and life of a battery are limited.
• If starting ability is threatened, you are informed by a warning
~ page 249, "Driver notification in the instrument cluster display" .•
What you should know
The highest priority is given to maintaining starting capa ­
bility.
Th e battery is severe ly taxed in short-distance driving, in city traffic
and during the cold time of year. Abundant electrical energy is
required, but only a little is generated.
It is also critical if the engine
is not running and electrical components are turned on. In this
instance energy is being consumed but none is being generated.
It is in prec ise ly these sit uations that you will notice energy manage­
ment actively regulating the distribution of energy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period of several days or weeks,
electrical components are gradually cut back or sw itched off. This
reduces energy consumption and maintains starting capability over a
longer period.
Take into consideration that when you unlock your vehicle, some
convenience functions, such as the remo te key or power seat adjust­
ment, may not be available. The convenience functions will be avail­
able again when you turn on the ignition and start the engine.
W ith the engine turned off
If you listen to the radio, for example, with the engine turned off or
use other MMI functions, the battery is being discharged .
If starting capability is jeopardized due to energy consumption, the
following warning appears in the MMI display:
Please start engine, otherwise system will switch off in
3 minutes.
Th e warn ing indicates that the system will be turned off automati­
cally after 3 m inutes. If you wish to continue using the functions, you
have to start the engine.
With the engine running
Although electrica l energy is generated when the vehicle is being
driven, the battery can become discharged. This happens most ly
when little energy is being generated and a great deal consumed and
the battery's state of charge is not optimal.
T o br ing the ene rgy balance back into equilibrium, consumers which
require especially large amounts of energy are temporarily cut back
or switched off. Heating systems in particular require a great deal of
energy .
If you notice, for example, that the heated seats* or the
heated rear window are not heating, they have been temporarily cut
back or switched off. These systems will be ava ilable again as soon as
the energy ba lance has been restored.
You will also notice that engine idle speed has been increased
slightly. This is normal and not a cause for concern. By increasing
eng ine id le speed the additional energy required is generated and the
battery is charged. •

-Checking and filling
-------=------=---------------------------------------------------
Closing the engine hood
-Pull the hood down until the pressure from the struts is
reduced.
- Let the hood
drop down and latch in place . Do not try to
push it shut;
it may fail to engage=> &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of
injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
=> & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary:
-Always disconnect the battery.
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine is
running or being started, never touch: -Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever of
automatic transmission to "P" (Park). ..,

_____________________________________________ C_h_ e_ c_k _in --= g'-- a_n _ d_ f_ i_ll _i_n __ g ____ _
& WARNING (co ntinued )
-The brake fluid mu st be new. Heavy use of the brake s can
cause a vapor lock if the brake fluid i s left in the sy stem too
long. This can seriously affect the efficiency of the brakes as
well as your safety . This could result in an accident.
0 Note
B rake fluid will damage the pain t of your ve hicle.
c£> For the sake of the environment
Because of the p rob lem of proper d isposal of b rake fl uid as we ll as
the spec ia l too ls requ ired and the necessary expert ise , we recom­
mend th at yo u have the brake fl uid ch anged by your authori ze d Audi
dealer. •
Battery
General information
Under normal operating cond itions, t he battery in your Audi does not
need any maintenance. W ith
high o uts ide temperatures or long daily
dr ives we recomme nd that yo u have the electro lyte level ch ecked by
an a utho rized Audi dealer o r q ua lified workshop. The e lectrolyte leve l
sho uld also be che cked ea ch t ime the battery i s ch arge d=>
page 293 .
Have t he battery checked when yo u take you r vehicle in for serv ice .
You a re well a dvised to rep lace a batte ry that is o lde r than 5 years.
With certa in ty pes of a irbag deployment, the ba tte ry is disconnected
from the vehicle e lectr ica l system for safety reasons=>
& in "Repair,
c are and disposal of the air bags " on
page 214.
Safety first
Disconnecting the battery terminals
Some vehicle f unctions ( power w indow reg ulators, for examp le) are
lost if the batte ry termina ls a re disconnected . These funct ions have
to be re learned after the battery terminals are connected again . To
prevent this, the battery should only be disconnected from the
vehicle electr ica l system when absolute ly necessary for repairs.
Vehicles not driven for long periods
If yo u do not drive your ve hicle over a period of severa l days o r wee ks,
elect rical compo nents are g radually cut bac k or swi tched off. This
re du ces ene rgy consumption and maintains start ing capability over a
longer period=>
page 2 47.
Take into consideration that when you unlock your vehicle, some
c onvenie nce func tions, such as the master key remote func tion o r
power seat adjustme nt, may not be avai lable. The convenience func­
tions will be available again w he n you t urn on the ign it ion and sta rt
the engine .
Winter operation
During the winter months , battery capacity tends to decrease as
t empe ra tu res drop . This is beca use more power is a lso cons umed
wh ile starting, and the headlights, rear w indow defogger , etc ., are
used more o ften .
Avoid unne cessa ry powe r consum ption, part icu larly in city traffic o r
when traveling only short distances. Let your authori zed Audi dealer
che ck t he capa city of the vehicle b atte ry befo re w inte r sets in
=>
page 293 . A well charged battery will not only prevent start ing
pro blems when t he we ather is co ld, bu t w ill also last l onge r.
[ i ] Tips
If yo ur vehicl e is lef t standi ng fo r seve ral weeks at extremely low
temperatures, the veh icle battery should be removed and stored
whe re it will no t free ze . This will preven t it from being dam aged and
having to be replaced .•
Vehicle care Technical data

___ G_ e_n_ e_r _a _ l_ in_ f_o _r_ m_ a_ t_io _ n _______________________________________________ _
General information
Explanation of technical data
Some of the technical data listed in this manual requires
further explanation.
The technical data for your vehicle is listed in the charts starting on
~ page 342 . This sect ion prov ides genera l information, notes and
restrictions which app ly to this data .•
Veh icle identification
The key data is given on the vehicle identification number
(VIN) plate and the vehicle data sticker.
F ig. 256 V ehicle I den­
t ifi ca tion Nu mbe r
(V IN ) pl ate: locat io n
o n d river's s id e d ash
p an el Fi
g. 257 The vehi cle
i d enti ficati on l abel -
in side the l ugga ge
co mpa rtme nt
The Vehicle Id ent ifi cat ion Number (VlN )
is located on the driver's s ide so that it is visible from the outside
throug h the windsh ield ~ fig . 256 . You can also d isp lay the Vehicle
Identification Number of your vehicle in the radio or in the MMI*.
Select function button [ CAR
l Veh icle ID numb er (VIN) .
The vehicle identifica tion label
is located in the luggage compartment near the battery .
The label~ fig . 257 shows the following vehicle data:
© Production control No.
@ Vehicle identification No.
® Type code n umber
@ Type designat io n/eng ine output in Kilow atts
© Engine and transmission code letter
© Paint No./Interior
(j) Optional equipment No.'s
Vehicle data 2 to 7 are also found in your Warranty
& Maintenance
booklet . .,,

-Alphabetical inde x lffi'f ___,__ ______________ _
Emergency release
Selector lever ............ ... .. ..
154
Emergency starting .. ..... .......... 333
Emergency towing ..... ............. 336
Eme rgency unlocking
Ignition key .. .. .. .. ...... ........
39
Energy management ................ 247
Battery power ................ ... 249
Driver notification ............. ... 249
Engine
Compartment . ...... .... .... .. ..
281
Coolant ............ .... .. .... .. 286
Hood . ............. .... ...... .. 279
Starting ..................... ... 106
Starting with jumper cables ..... ... 333
Stopping . ...................... 107
Engine compartment
Safety instructions ............ ...
280
Working the engine compartment .. 280
Engine coolant system
Malfunction .......... ...... .. ....
29
Radiator fan ........ .... .. .. .. .. 289
Engine coolant temperature
Temperature gauge ............ .. .. 8
Engine cooling system ............ ...
286
Adding coolant ... ............... 288
Checking coo lant level . .. ....... .. 287
Checking the engine coolant level . .. 287
Engine data ...... .......... ...... .. 342
Engine hood
Closing .................. .... ...
280
How to release the hood .. ....... .. 279
Engine oil . ..... ....... ... .. .. .. ... 282
Add ing ....... ... .. .. .. .. ....... 285
Additives .. ..... ... .. .. ......... 285
Changing .. .... .. .... .. .. .. .. .. . 285
Check o il level ...... .... .. .. .. .. . 284
Consumption . .. .. .. .. .... .. ..... 284
Oil consumption .......... .. .. .. . 283
Oil grades .... ................ .. 282
Specification and viscosity ... ... .. . 282
Engine oil level ................... ... 35
Engine oil pressure
Malfunction ... ................. ..
30
Engine oil sensor defective ............ 35
Engine speed limitation ............... 35
Environment
Break-in period ............ ..... .
250
Catalytic converter ........ .. .. .. . 251
Disposing of your vehicle battery . .. .
294
Driving at high speeds ..... ...... . 253
Driving to minimize pollution and noise ..
252
Fuel ........................... 276
Fuel economy ................... 252
Leaks under your vehicle .......... . 280
Letting the vehicle stand and warm up ...
253
Proper disposal of d rained brake fluid 290
Proper disposal of drained engine coo lant
288
Proper disposal of d rained engine oil 285
Recycl ing used engine o il .. . .. .. .. . 285
Unleaded fuel ............ .. .... . 274
What should I do with an old battery?
294
Environmental note
Rear window defogger ........ .
92, 100
EPC
See Electronic power control . . . . . . . . 13
ESP
See Electronic stabilization program (ESP)
240
Event Data Recorder (EDR) 240
Exhaust ta il pipes
Cleaning ........... ...... .... ..
267
Expansion tank .. .. .. .. ............. 287
F
Fan .................. .. .... .... 91,98
Radiator . ........... ...... .... .. 289
Fastening
Booster seats ............ .... . ..
230
Convertible child safety seats ...... 228
Infant seats .. .. ................ . 227
Flat tire
Changing .......................
320
Floor mats ..... ...... .. . .. .. .. .. .. 183
Fog lights .................. ..... ... 63
Folding the rear seat backrests .. ...... . 84
Foot pedals . ........... ...... .... .. 182
For the sake of the environment
Gasoline fumes and the environment
276
Refueling ................ ... .. .. 276
Saving fuel by early upshifting ........ 9
Front airbags Description .. ...... .............
204
How they work ...... .. .... .. .. .. 209

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Instruments and controls ... .. .. .. .. .. . 8
General illustration .. .. .. ...... .... .
7
Interior lights ..... .. .... .. .. .. .. .... 68
Rear .... .. .. .. .. .. .. .. ..... ..... 68
Inte rva l wip ing .. .. .................. 69
Rai n sensor .. ........... ...... .. . 69
J
Jumper cables . .. ................. .. 334
Jump -start ing .. . ... .. .. .. .. .. .. .. .. 333
K
Key ........................... .... 37
Batte ry rep lacement ..... .. ........ 38
Key rep lacement ... ... .. .. .. .. .... 37
Mas ter key with remo te control ...... 37
Mech anica l key . .. .. .... .......... 39
Kick-down multitron ic ® ..... ... ..... .... ... 158
tiptro nic® ........ .............. 151
Knee airbags . ... .. .... .. .. .. ... . ... 2 16
Description . ... .. .. .. .. .. .... .. . 216
How they work . .. .... .. ......... 217
Important safety instructions . ..... 218
L
Lane ass ist
Activat ing and deactivat ing ... ..... 132
Description .. ....... ... .. ....... 132
Indicator in the instrument cluster display
133 Instrument cluster
indicator light .. . 132
N otes on inst rument cluster d isp lay . 132
steer ing wheel v ibration ........... 135
wa rning time ......... .. .. .. .. .. . 135
LATCH ................. .... .. ..... 235
Description . .. .... ......... .... . 237
Insta lling a child restraint .. .. ..... 238
Location ... ... ...... ... .. .. .. .. . 236
Mounting and releas ing the anchorage
hook .... ... ... .... .... .. .. ... 238
Leather . ...... .. ........... .. .... . 269
Clean ing ........ .... .. .. .. ..... 270
Lifting jack ... .... .. .. .. .. . ... .. ... 323
Li ft ing vehicle . ... .. .... ... . ... .... . 338
Light senso r ......... .... ...... ..... 62
Light senso r defective .. ...... .... .. .. 33
Ligh ting ........ ........... .... .. .. 62
Lights Coming home ...... .. .. .......... 64
Daytime running ligh ts .. ........ ... 64
Dr iv ing light control .. ... . ... .. .. .. 62
E mergency flashers ....... .... .. .. 66
E xter io r li gh ting ... ....... ...... .. 64
H igh beam .. .. ........... .. .. .. .. 6 7
H igh beam wa rning/indica tor light .. . 15
Leaving home . . . . . . . . . . . . . . . . . . . . 64
Switching on and of f ... ..... .. ... .. 62
T urn signals ... .. .... ...... ... .. .. 67
Xenon headlights ...... ........... 66
Loading the luggage compartment .. .. . 183
Locking Power locking switch ............ .. 45
Rear lid/trunk lid .................. 46 Remote control key
. . . . . . . . . . . . . . . . 42
Us ing the mechanical key . ....... ... 44
Low beams . . . . . . . . . . . . . . . . . . . . . . . . . 62
Lower unive rsal anchorage bars (Canada) . ..
235
Lower un ive rsal a nchorages (C anada) . .. 235
Luggage Stowing ............. ... .. .. .. .. 183
L u ggage compartment ... .. ... ... ... . 83
Increasing the s ize .. .............. 84
Loading ........ .......... .... .. . 83
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . 83
See also Load ing the luggage
compartment .. . .. ...... ... . ... 183
See also Luggage compartment . ... . 83
Luggage compartmen t lid
E mergency unlocking ....... .... .. . 47
M
Ma intenan ce ................. .. .. .. 343
Malfunction Indicato r Lamp (MIL) ... 15, 21
M aster key ..... .. ...... ..... ... . .. . 38
Battery rep lacement ... ... .. .. . ... . 38
Check light . ... .. .. ...... .. .. ... . 38
M echa nica l key .. .. .. .. .............. 39
Memory for dr iver's seat ............. . 80
Recalling settings . .. .. .. ......... . 81
Storing sett ings .... .............. 81
M il eage
Average ........ .... .. .... .. .. .. . 22
Instantaneous ................... . 22

Alphabetical index IIJ!II ___________________________________ ____._ _______ _
Remote control key .. . .... ... ... ... 42 Washer reservoir .... ... ...... .... ... 295
Us ing the mechanical key ........... 44
Washing ... .................... ... 260
Upper cabin heating ... ... .. .. .. ..... 104 Automatic car wash .. ............. 261
Use of jumper cables ................ 334 by hand
...................... ... 261
General information .............. 260
V Power top cleaning ............... 263
with a power washer .............. 262
Valet parking ... .. ... .... ... .. .. ..... 49
Waxing .. .. .. .. ... ... ............. 263
Vanity mirror .............. .. .... .. .. 69
Wear indicator .. .. .... ...... .... ... 306
Vehicle Identificat ion Number (VIN) ... . 340
Weatherstrips ....... .. .. .. .. ....... 266
Vehicle jack .................... ... . 323
Weights .. .. .. .. .. .... .. .. ... ...... 341
Vehicle lite ratur e ................ .. ... 4 What happens if you wear your safety belt too
Vehicle tool kit ..................... 318 loose? ...................... .. 196 When should
I adjust the tire pressures? 303
When should I check the tire pressures? . 303
Where are lower anchorages located? ... 237
Where can I find the tire pressures for my car?
302
Why safety belts? . . . . . . . . . . . . . . 190, 191
Wind deflector ..... .. ............... 54
Cleaning ............ .... ..... ... 263
Window regulators
Malfunctions ..................... 49
Power locks .... ... ............... 48
Windows Cleaning .......... ........ ... ... 265
Vehicle-care products ................ 260 What happens to unbelted occupants? .. 192 Windshield defogging/defrosting . . 92, 100
Ventilat ion . . . . . . . . . . . . . . . . . . . . . 91, 98 What impairs driving safety? .......... 177 Windshield washer fluid
Warning/indicator lights ..... ......... 12
adaptive cruise control ..... .. .. .. . 123
Airbag system ............... ... .. 14
Anti -lock brake system (ABS) ........ 16
Brake system ..................... 17
Cruise control ........... ...... .. .. 15
Electromechanical parking brake ..... 16
Electronic power control . .... .. ... .. 13
Electronic stabilization program (ESP) . 14
High beam ....................... 15
Ma lfunction Indicator Lamp (MIL) .... 15
Safety belt ............. .. .. .. .. .. 15
Tir e pressure monitoring system . .. .. 14
T urn signals .............. .. .. .. .. 15
Warranty coverages .............. .. . 343
Controls and equip­
ment Safety first
What should
I do after changing a wheel? . .
303
What should I do after replacing wheels? .. .
303
Whee l bolts
To rque . ..................... ... 313
Wheels .. .... .. .. ................. 296
Cast alloy ....................... 266
Check ing tire pressure ............ . 302
Cold tire inflation pressure ......... 300
General notes ................ .. . 296
Glossary of tire and loading terminology .
297
New tires and wheels ......... .. .. 307
T ir es and vehicle load l imits . .. ..... 304
When must a safety belt be replaced? .. 193
When must the airbag system be inspected?
211 Low
level ... .... .. ..... ........ .. 34
Windshield wipers ................... 69
Faulty ........ .......... ... .. .. .. 36
Installing new wiper blades ........ . 71
Service position ................... 70
Washer reservoir ... .............. 295
Winter operation
Battery ......................... 291
Coolant system .................. 286
Defrosting windows . . . . . . . . . . . 92, 99
Rear seat heating ................ 103
Seat heating ......... ..... ... ... . 103
Tir es . ......................... . 246
Windows . .. ...... ...... ....... . 26S
Winter tires ........................ 311
All wheel drive .............. .. ... 311
Vehicle operation Vehicle care Do-it-yourself service Technical data