2010 AUDI A5 COUPE battery replacement

Applies to vehic les: with defective light bulb warn ing
Defective light bulb warning
The defective light bulb warning monitors the function of
the light bulbs in the vehicle.
The defective light bulb warning monitors the function of the light
bulbs. If a defective light bulb is detected, or if a light bulb has
burned out, a yellow symbol appears as well as a notification that
shows which light bulb is defective.
Defective bulb
If this symbol lights up, a turn signal (front or rear), a headlamp,
a brake light, the back-up light, a fog lamp or a rear fog lamp has
failed.
& WARNING
• Light bulbs are under pressure and can explode when bulbs are
replaced -risk of injury.
• With gas-discharge lamps* (xenon headlights), the high­
voltage component must be handled appropriately. Doing other­
wise poses a risk of death!
[ i] Tips
Have an authorized Audi dealer or other qualified workshop perform
the replacement or the repair. •
Windshield washer fluid level too low ->
Top off the washer fluid
If the symbol illuminates, add windshield washer fluid to the washer
system and also to the headlight washer system* =>
page 286. •
Controls and equip ­
ment
Driver information display
Fuel supply too low \l
When the symbol illuminates, this means there are about 2.1
gallons
(8 liters) of fuel left in the fuel tank. Time to refuel!
=>
page 266.
If the symbol lights up, even when there is ample fuel in the tank,
and the text
TANK SYSTEM MALFUNCTION ! CONTACT WORKSHOP
appears in the display, there is a fault in the system. Contact a qual­
ified workshop to have the fault rectified. •
Applies to veh icles: with battery voltage warning
Battery voltage ..:J
If battery power drops into the range where it can limit the ability of
the engine to start, this the symbol appears in the instrument
cluster display with the following driver message
battery charge
low: Indicates charging by being driven .
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.
Driver message appears and does not go out again
If this driver notification appears after the ignition is turned on or
while driving and does not go out again, the battery's state of
charge is not in the optimal range. Starting capability is restricted.
Have the battery checked at an authorized Audi dealer or other qual­
ified workshop as soon as possible. •
I • •

[ i J Tips
• The operation of the remote control key can be temporarily
disrupted by interference from transmitters in the vicinity of the
vehicle working in the same frequency range {e .g . a cell phone,
radio equipment).
• If you open the driver's door with the key left in the ignition lock,
a chime will sound. This is your reminder to remove the key and lock
the door.
• For security reasons, replacement keys are only available from
Audi dealers.
• For Declaration of Compliance to United States FCC and Industry
Canada regulations~
page 342. •
Check light in the master key
The check light in the master key provides information
about different conditions.
!
lJl
Fig. 29 Check light in
the master key
The check light comes on briefly once when a button is pressed, and
during an "inquiry" by the convenience key system.
Con tro ls and eq uip­
ment
Opening and closing
If the check light does not come on, the battery is dead and has to
be replaced. In addition, when the battery is dead the symbol
appears in the instrument cluster display as well as the message :
Please change key battery
Battery replacement ~ page 39. •
Master key battery replacement
..
Fig. 30 Remote master
key: Removing the
mechanical key
Fig . 31 Remote master
key: Removing the
battery holder
We recommend having the battery changed by an autho ­
rized Audi dealer. However, if you wish to replace the dead
battery yourself, proceed as follows:
- Press the release button @=>fig. 30.
Vehicle care I I Technical data

Opening and closing
- Pull the mechanical key ® out of the master key.
- Press the release button @~page
39, fig. 31 on the
battery holder and at the same time pull the battery
holder out of the master key in the direction of the arrow.
- Install the new battery CR 2032 with the"+" sign facing
down.
- Push the battery holder carefully into the master key .
- Install the mechanical key.
<£> For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ ­
ment.
[ i J Tips
The replacement battery must be the same specification as the
original. •
Removing the mechanical key
- Press the release button @~fig. 32.
Fig. 32 Remote master
key : Removing the
mechanical key
- Pull the mechanical key ® out of the master key.
Using the mechanical key , you can
• Lock and unlock * the storag e compartment on the passenger's
side
~ page 89.
• Lock and unlock the lockable rear se at ~ page 82.
• Lock and unlock the vehicle manually~ page 45 if this should
not be possible with the master key .•
Emergency unlocking of the ignition key
In the event of malfunctions in the electrical system, it
may happen that you cannot remove the ignition key.
Fig . 33 Ignition switch
with ignition key
If you are unable to remove the ignition key, for example
because the vehicle battery is discharged, proceed as
follows:
- Press the release button@~ fig. 33 for example w ith a
ball point pen and pull the mechanical key ® out of the
master key.
- Lock the vehicle using the mechanical key~ page
45. ..,_

Seats and storage
Before you purchase any accessories, always read and follow the
information in=> page 341, "Additional accessories and parts
replacement".
& WARNING
• Use care when using the cigarette lighter. Inattentive or unsu­
pervised use of the cigarette lighter can cause burns -risk of
injury!
• The cigarette lighter works when the ignition is switched off or
with the ignition key removed . Children should never be left unsu­
pervised in the vehicle, or there could be risk of fire!
• The power outlets and therefore the electrical accessories
connected to them operate only with the ignition on. Improper use
of the outlets or of electrical accessories can lead to serious inju­
ries or cause a fire. For this reason, children should never be left
unattended in the vehicle -they could be injured!
0 Note
• To avoid damaging the socket, only use plugs that fit properly .
• Only use the cigarette lighter socket as a power source for elec­
trical accessories for short durations . Use the sockets* in the
vehicle when a power source is needed for longer durations.
[ i] Tips
When the engine is off and accessories are still plugged in and are
on, the vehicle battery can still be drained .•
Storage
General overview
There are numerous places to store items in your vehicle.
Glove compartment => page 89
Storage compartment in the roof =>
page 89
Coat hooks => page 89
- -Storage in the trim panels in the luggage
compartment
& WARNING
• Always remove objects from the instrument panel. Any items
not put away could slide around inside the vehicle while driving or
when accelerating or when applying the brakes or when driving around a corner .
• When you are driving make sure that anything you may have
placed in the center console or other storage locations cannot fall
out into the footwells. In case of sudden braking you would not be
able to brake, depress the clutch or accelerate.
• Any pieces of clothing that you have hung up must not interfere
with the driver's view. The coat hooks are designed only for light­
weight clothing. Never hang any clothing with hard, pointed or
heavy objects in the pockets on the coat hooks . During sudden
braking or in an accident - especially if the airbag is deployed -
these objects could injure any passengers inside the vehicle . •

_______________________________________________ .=_A ::_ i :.:.r ~b ~a:=.; 9!:!...: S~ y[: s~ t~ e:::_ m ~ --""
& WARNING (continued )
• Always make sure that the side airbag can inflate without inter­
ference :
- Never install seat covers or replacement upholstery over the
front seatbacks that have not been specifically approved by
Audi.
- Never use additional seat cushions that cover the areas
where the side airbags inflate.
- Damage to the or iginal seat covers or to the seam in the area
of the side airbag module must always be repaired immedi ­
ately by an authorized Audi dealer.
• The airbag system can be activated only once. After an airbag
has inf lated , it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment necessary .
• The airbag system can be deployed only once . After an airbag
has been deployed, it must be replaced with new replacement
parts designed and approved especially for your Audi model
version. Replacement of complete airbag systems or airbag
components must be performed by qualified workshops only .
Make sure that any airbag service action is entered in you r Audi
Warranty
& Maintenance booklet under AIRBAG REPLACEMENT
RECORD .
• In accidents when an airbag is deployed , the vehicle battery
separates the alternator and the starter from the vehicle electrical
system for safety reasons with a pyrotechnic circuit interrupter.
-Work on the pyrotechnic circuit interrupter must only be
performed by a qualified dealer -risk of an accident!
- If the vehi cle or the circuit interrupter is scrapped, all appli ­
c able safety precautions must be followed .
Controls and equip­ ment Safety first Vehicle operation
<£' For the sake of the environment
U
ndep loyed airbag modu les a nd p retens ioners mi ght be c lassified
as Perch lorate Mate rial -sp ecia l handling may apply, see
www .dtsc.ca.gov/ haza rdous waste/perc hlorate. W hen the vehicle or
parts of the restraint system including airbag modules safety be lts
w it h pre ten sio ne rs are scrapped, a ll appl ica ble l aws and re gula ­
tions must be observed. Your authorized Audi dealer is familiar with
t hese re qu irements and we rec om men d th at you h ave yo ur dealer
perform this service for you. •
Other things that can affect Advanced Airbag
performance
Changing the vehicle 's suspension system can change the way that
t he Adva nced Airb ag Sys te m per form s in a crash . For e xamp le,
u sing ti re -rim combinations not approved by Audi, lowering the
ve hicle , c hangi ng th e s tif fness of the sus pension , in cluding the
springs, suspension struts, shock absorbers etc. can change the
forc es that are meas ured by the ai rbag se nso rs a nd se nt to t he ele c­
tronic control unit. Some suspension chan ges can, for examp le,
i nc rea se t he for ce le v e ls mea sur ed by the se nso rs and make th e
ai rbag system dep lo y in cras hes in w hich it wou ld not d ep loy if the
changes had not been made . Other kind s of changes may reduce
th e force l eve ls measured by t he sensors and prevent t he airba g
from deploy ing when it should .
Th e sen so rs in the s afet y b elt buckle fo r the driv er and front
passen ger seat tell the electronic control module if the safety belt is
l a tc h e d or n ot. If the safet y b elt i s bei ng use d, th e fr ont ai rb ag will
dep loy at a s lightly hi gher rate of vehic le dece leration than if the
safet y belt is not be ing u sed . The refo re, in a partic ular coll isi on, it i s
poss ible t hat an airbag will not deploy at a s eati ng position where
the safety be lt i s being used b ut wi ll inf late at the pos ition where the
sa fety belt is not being used. I t is im porta nt t hat nothi ng i nterf ere
with the safety belt b uckles so that the sens ors can send the correct
i n fo rm ati on about sa fety belt use to the elect ron ic contro l u nit. .,.
Vehicle care Do-it-yourself service Technical data

___________________________________________ C_ h_e _c_ k_ i_n _g _ a_n _d_ f_il _li _n _g __ _
•
Fast charging the battery {charging rate above 14 .8
Volts )
For technical reasons do not use a battery charger that uses vo ltage
greater than 1 4.8 Vo lts to charge y our ve hic le 's battery.
& WARNING
Charging a battery can be dangerous .
• Always follow the operating instruct ions provided by the
battery charger manufacturer when charging your battery.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice . Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze .
• Charge the battery in a well ventilated area. Keep away from
open flame or electrical spark . Do not smoke . Hydrogen gas gener ­
ated by the battery is explosive.
• To redu ce the danger of e xplos ion , never connect or disconnect
charger cables while the charger i s operating.
• Fast charging a battery is dangerous and should only be
attempted by a competent technician with the proper equipment.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid .
0 Note
Never use a fast charger as a booster to start the engine . T his wil l
se rious ly da mage sen sit ive elec tronic componen ts, such a s control
un its, re lays, radio, etc., as well as the battery charger. •
Battery replacement
Th e ne w batt ery must hav e the sam e speci ficat ions and
d im en sions as t he o rigin al equi pmen t b att ery.
Intel ligent energy management in your vehicle is respons ib le for
d istr ibut ing t he e lectr ica l energy t hro ugh out your ve hicl e
~ page 241. The intelligent energy management syste m wil l keep
t h e eng ine ba ttery charge d better then veh icles without t his system .
T o make sure the additional electrical energy is available once again
af te r you hav e cha nged the battery, w e re co mmend tha t you in sta ll
batteries of the same type and manufacture on ly (the same as those
i nsta lled at t he time your vehic le was delive re d ). S pecifi cations a re
listed on the battery housing . Your authorized Audi dea ler wi ll then
code the batter y ma nageme nt control u nit.
If it is not poss ible to use a batt ery o f this ty pe, the new ba ttery must
have the same capacity, voltage (12 vo lts) , amperage, constr uction
and p lug sea lin g.
W hen installing the batter y, ma ke sure the ignition and all electrical
c o nsumers are tur ned off .
0 Note
Make sure the ven tilat io n hose on t he side o f the ba ttery is
conn ected, otherwise fumes or b att ery ac id can leak out .
<£' For the sake of the environment
Because of the proble m of proper d isposal o f a ba ttery, we recom ­
mend your authorized Audi dealer change the battery for you.
B at teri es co nt ain sulf uric acid a nd lead an d mu st alwa ys be
disposed of proper ly in comp liance with a ll environmental regula ­
t ions. Dispos ing o f v ehicle bat ter ie s i mproper ly is very danger ous to
the environment .•
Vehicle care I t •

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ _
•
prevent your vehicle from going faster than the tire speed rating
=>& .
U.S. DOT Tire Identification Number (TIN ) and tire
manufacture date
T his is the tire's "seria l number". It begins with the letters "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 ­
ture. For example, the numbers 2209 mean that the tire was
produced in the 22nd 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.
Audi Original tire
Tires with the identification "AO" or "RO" have been specially
matched with your Audi. We recommend using only these tires
because they meet the highest standards regarding safety and
driving characteristics when used correctly. Your authorized Audi
dealer will gladly prov ide you with more information.
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 materia ls 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 carried by the tire.
Tire qual ity grading for treadwear , traction, and
temperature resistance
Tread wear, traction and temperature grades=> page 303.
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 vehic le, 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 instal l 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 ­
toring system* would not be able to monitor the tire pressure or
warn you if it is necessary .
• The battery inside of the tire pressure sensor has a limited
service life .
• Always drive with the valve stem caps secure ly mounted. We
recommend using factory instal led valve stem caps. Ask your autho ­
rized Audi dea ler to replace lost valve stem caps.
The installation of replacement tires with steel cord body p lies in
the tire sidewall may cause malfunction of the tire pressure moni­
toring system*, and is not recommended (cord material information
in molded on the tire sidewall).
Always check your tire pressure monitoring system* indicator after
replacing one or more tires on your vehic le. If the tire pressure
monitoring system* indicator flashes, or is on, your system is not
working properly. Your replacement tire might be incompatible with
your tire pressure monitoring system*, or some component of the
t ire pressure monitoring system* may be damaged. .._
Vehicle care I t •

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_ic _ a _ l _in _ d_e _ x __ _
Status messages . . . . . . . . . . . . . . . . . 134
Switching on and off .. .... ...... .. 133
Audi drive se lect .. ...... .... ........ 144
Adaptive dampers .. ...... .... .... 144
Description ... ... .... .... ...... .. 144
Dynamic st eering .. ....... ...... .. 144
Se tting th e driving mode . ...... ... 145
Audi Service Repair Manuals and Literature
339
Auto Lock .......... ................. 42
Auto Safety Hotline ... ... ... .... .... . 177
Auto-Ch eck Contro l .... ... .. .... .... .. 27
Automatic belt retractor .......... .... 183
Automatic car wash
See Washing .. .... .... ... .... .... 253
Automatic climate control A/C mod e ..... .. .... .... ...... ... 95
Au tomatic climate control plus ....... .. 96
A/C mode . . . . . . . . . . . . . . . . . . . . . . . 102
See also Deluxe automatic climate control
plus ...... .. ..... ... ..... .. ..... 96
Automatic c limate control system ...... 90
See also Deluxe automatic climate
control ... .. .... .... ..... ...... . 90
Automatic driving light control ..... .. .. 53
Automatic Shift Lock (ASU .. ..... .... 150
Automatic transmission ...... ...... .. 147
6-speed automatic transmission . ... 147
Automatic Shift Lock (ASU ... . ..... 150
Driving .. .. .. ...... .......... ... 148
Dynamic shift program . ...... ... .. 151
Emergency release . . . . . . . . . . . . . . . 154
Fail -safe mode . ...... .... .. . ..... 153
Controls and equip­
ment Safety first
Kick-down
.... ..... .. ..... .. . .... 151
Manual shif t program . ...... ...... 152
Selector lever ...... ........ .... .. 149
Shift buttons . ...... .... ... .. ... . 153
Steering wheel with tiptronic ....... 153
Automatic wip e/wash system ...... ... . 61
Average speed ........... .... .... .... 23
Avoid damaging the vehicle ........... 244
B
Battery . .... .... ...... ....... .... .. 281
Battery location inside the luggage
compartment .. . .. .. .... .... .... 282
Charging ............. .... ... .... 284
Important warnings when working on the
battery ..... .. .. .... .... .... ... 282
Jump starting ............. ... .... 326
Low ... .. .... .. . .. ... ....... .... 241
Replacing the battery ......... .... 285
State of charge . .............. .... 241
W inter operat ion . .... .... .... .... 281
Working on th e battery ...... .... .. 282
Battery voltage ..... ....... .... .... .. 35
Before driving ... ..... .. ... ... .. .... 169
Blended gasoline ... . .. ... ....... .... 265
Body cavity sealing ...... ...... ... .. . 258
Boost er seats .... .... .... ...... ... .. 221
Brake assist ..... .... .... .... .... ... 239
Brake booster .... .. .. ... ..... .. . .... 238
Brake fluid Changing the brake fluid .. .... .... 281
Checking the brake fluid level .. .... 280 Reservoir
.. .... .. .. ... .... .... ... 280
What is the correct brake fluid level? 280
What should I do if the brake fluid warning
light comes on? ..... .... .... .. . . 280
Brake system .... ... .... .... .... .... 280
Anti-lock brake system ............. 15
Brake fluid . ........... .... ....... 280
Brake fluid specifications for refill and
replacement . .... .... .... ...... . 281
Brake light defec tive ... ...... ... .. . 35
Brake pads ..... .. ...... ....... .. 244
Electromechanical parking brake .... 112
General information ...... .... ... . 237
How does moisture or road salt affect the
brak es? . ...... .. ...... .... .... . 237
Malfunc tion ... .. .. .. .... .... ..... 29
Warning/indicator lights .... ...... .. 16
Worn brake pads symbol .. ... .... .. 34
Braking guard
See Audi braking guard .... .... ... . 132
Break -in period ...... .... .. .. .... ... 243
Brake pads ... .... .... ........... 244
Tires ... ..................... .. .. 243
Bulbs .... .... ... ... ... .. ...... .... . 324
C
California Proposition 65 Warning ... .. 272
Battery specific ... .... .... .... ... . 283
Capaciti es .. ... .... .... .... .... ..... 337
Car care ... . .... .. .. .... .... .... .. . . 252
Inter ior .... ... .... .... ...... ..... 259
P lastic and vinyl ....... ......... .. 256
Weatherstrips ... .. .... .. . .... ... . 257
Vehicle operation Vehicle care Do-it-yourself service Technical data