2011 AUDI A5 COUPE warning light

___ C_ h_ e_c _k _i _ n _g ~ a_n _d_ f_il _l_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 a irbag deployment, the battery is disconnected
from the vehicle e lectrical system for safety reasons=>
& in "Repair,
care and disposal of the airbags" on
page 204.
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 aga in . To
prevent this, the battery should only be disconnected from the
vehicle electrical system when absolutely necessary for repairs.
Vehicles not driven for long periods
If you do not dr ive 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 243.
Take into consideration that when you unlock you r vehicle, some
convenience functions, such as the master key remote function or
power seat adjustment, may not be available. The convenience func­
tions will be available again when you turn on the ign ition and start
the engine.
W inter operation
During the w inte r months, battery capacity tends to decrease as
temperatures drop. This is because more power is also consumed
wh ile 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 dealer
check the capacity of the vehicle battery before winter sets in
=> page 288. A well charged battery will not only prevent starting
problems when the weather is cold, but will also last longer.
W 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 anyth ing in the lu~gage compart­
ment,
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 "" ------------------~::....::..:..._~---=---
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 rea ch 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 l~ad
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 open­
ings.
- If you get battery acid in your eyes or on your skin, imm~di­
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.
Safety first
& WARNING (continued)
• When working on the battery, be sure not to short-circuit the
terminals with tools or other metal objects. This would cause the 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. I! 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°C).
• 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. .,,_
Vehicle care Technical data

___ C_h_ e_c _k _i_n -=g :a,__ a_n_ d_ f_ i_ l _li _n _,g;._ __________________________________________ _
Windshield/headlight* washer
container
Fig. 211 E ngine
compartment: Wind­
shie ld and headlight*
washer fluid container
The washer fluid container is mark ed with the symbol¢ on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working
in the engine compartment" on
page 275.
- 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 capacity in the table in:::::::, page 339.
Clean water should be used when filling up. If possible, use soft water
to prevent scaling on the washer jets. Always add a glass cleaner solu­ tion (with frost protection in the winter) .
0 Note
Do not mix engine coolant antifreeze or any other additives to fill up
the windsh ield washer reservoir .•

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
pressure for a trip -even one that you would not consider to be
" long. " See =>
page 299, "Tires and vehicle load limits" for more
important information.
Always use an accurate tire pressure gauge when checking and
adjusting inflation pressures. Check all of the tires and be sure not to
forget the spare tire. If the pressure in any tire is too high when the
tire is "cold ," let air out of the tire slowly with the edge of the tire
gauge and keep checking the pressure until you reach the pressure
that is correct for the load (passengers and luggage) and kind of
driving you plan to do .
If the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
that you need to reach the correct pressure for the vehicle load
(passengers and luggage) for the tires on your vehicle as listed on the
on your vehicle and in this manual and the kind of driving you plan to
do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason.
Remember that the vehicle manufacturer, not the tir e manufacturer,
determines the correct tire pressure for the t ires on your veh icle.
It is important to check the tire pressure when the tires are cold.
• Read the required tire pressure from the tir e pressure label. On
USA vehicles, the tire pressure label is located on the driver's side 8-
pillar. On Canada vehicles, the tire pressure label is located either on
the driver 's side 8 -pillar or inside the fuel filler flap. The tire pressure
label lists the recommended cold t ire inflation pressures for the
vehicle at its maximum capac ity weight and the tires that were on
your vehicle at the time it was manufactured. For recommended tire
p ressures for normal load cond it ions, please see chapter
==> page 295.
• Turn the valve stem cap counter-clockw ise to remove it from the
tire valve.
• Place the air pressure gauge on the valve. •
The tire pressures should only be checked and adjusted when the
ti res are cold . Th e slightly raised pressures of warm tires must not be
reduced .
• Adjust the tire pressure to the load you are carrying .
• Reinstall the valve stem cap on the valve .
When should I check the tire pressure?
The correct tire pressure is especially important at high speeds . The
pressure shou ld therefore be checked at least once a month and
always before starting a journey . Do not forget to check the tire pres ­
sure for the spare wheel.
When should I adjust the tire pressures?
Adjust the t ire pressure to the load you are carrying . After chang ing a
wheel
or replacing whee ls you have to adjust the tire pressures on all
wheels. In addition, you must then initialize the new tire pressures in
the tire pressure monitoring system*=>
page 310.
& WARNING
Incorrect tire pressures and/or underinflation can lead sudden tire
failure, loss of control, collision, serious personal injury or even
death.
• When the warning symbol appears in the instrument
cluster, stop and inspect the tires .
• Incorrect tire pressure and/or underinflation can cause
increased tire wear and can affect the handling of the vehicle and
stopping ability .
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control.
• The driver is responsible for the correct tire pressures for all
tires on the vehicle. The applicable pressure values are located on
a sticker on the driver's side B-pillar or on the inside of the fuel
filler flap. .,_

Tires and wheels -_____________________ ,,...
Applie s to vehicl es: wi th t ir e pr essure mon itor ing syste m
Tire pressure indicator appears
The tire pressure indicator in the instrument cluster
informs you if the tire pressure is too low or if there is a
system malfunction.
F ig . 217 Displ ay:
un derinfl ation
wa rn ing
Fi g. 218 Disp la y:
S yst em m alf unction
Us ing the A BS sensors, the tire pressure monitor ing system com pa res
the tire tread circumference and vibrat ion characterist ics of the ind i­
vidual tires .
If the pressure decreases in one or more tires, this is indi-
cated in the instrument cluster with a warn ing symbol and a
message => fig . 217 . T he driver message in the display goes out after
5 seconds. T he driver message can be d isp layed again by p ressing the
[SETj button. If on ly one tire is affected, the display will indicate its
posi tion.
Vehicle OP-eration T
he tire pressure mon itor ing system must be reset via radio or MMI*
e ach t ime the press ures a re adjus ted (e.g . when switching between
partia l a nd full load pressure) or after chang ing or replacing a tire on
your vehicle =>
page 312. You ca n find the recommended tire pres ­
sures for your vehicle on the label on dr iver's side B-p illar
=> page 295.
Tir e tread ci rcumference and vibrat ion ch aracterist ics ca n change and
cause a tire pressure warn ing if:
• the tire pressure in one o r more tires is too low,
• the t ire has structura l damage,
• t he ti re pressure w as changed, wheels rotated or replaced bu t the
TP MS was not reset=>
page 312.
Warning symbols
• Loss of pressure in at least one tire => & . Check the tire or tires
and replace or repa ir if necessary . The ind icator light
I in the instru­
ment cl uster a lso illuminates =>
page 14. Check/correct the pres­
s u res of a ll four tires and reset TPMS via r adio or MM I*.
il (T ire Pressure Monitoring System) Tire pressure! System
malfunction.
If appears after sw itching the ignition on o r while dr iv ing
=> page 311 , fig. 218 and the ind icator light (1 in the instrument
cl uster blinks for a pprox imately one minu te and then s tays on, there
is a system malfunction. See your author ized Audi dealer as soon as
poss ible.
& WARNING
• If the tire pressure indi cator appears in the instrument cluster
display, one or more of your tires is significantly under -inflated.
Reduce your speed immediately and avoid any hard steering or
braking maneuvers . Stop as soon as possible and check the tires
and their pre ssure s. Inflate the tire pre ssure to the proper pre s­
sur e as ind icated on the vehicle's tire pres sure label =>
page 295.
Driving on a significantly under-inflated tire causes the tire to _,,.
Vehicle care Do-it-yourselt service iTechnical data

-L~W~h~a~t~d~o~I~d~o~n~o~w~? :_ _________________________________________ _
What do I do now?
Vehicle tool kit
The too ls are stored underneath the floor panel in the
luggage c ompartment.
Fi g. 2 19 Lu ggag e
c om partm ent : too l k it
When you need access to the vehicle tool kit or jack* , you will need to
t ake out t he spare ti re* and cover~
page 314.
The ve hicle too l kit includes:
• Hook for removing whee l covers *
• Alignmen t pin fo r changing the wheel
• Screwdriver wi th reversib le blade
• Tool for changing light bulbs
• Revers ib le b it (reve rs ible To rx bit for chang ing lig ht bulbs)
• Rod for jack
• Jack*
• Lu g wre nc h
• Towing eye
Some of the veh icle items listed above a re p rovided o n cert ain mo dels
only or are opt ional extras.
Before ret urning the jack* to its place, retract the jack arm fully.
& WARNING
• Never u se the screw dri ver he x head to tighten wheel bolts,
s in ce the bolts cannot attain th e neces sa ry tightening torque if
you use the he x head , potent ially caus ing an accident.
• The fa ctory-supplied jack i s intended only for your vehicle
model. Unde r no circumstances should it be used to lift heavy
vehicles or other loads ; you risk injuring you rself .
• Never start the engine whe n the vehicle is raised , which could
caus e an acci dent .
• Support the vehicle securely with appropriate stands if work is
to be performed underneath the vehicle; otherwise , there is a
potential risk for injury. •
App lies to vehicles : w ith space -saving spa re t ire
Space-saving spare tire (compact
spare tire)*
The spare tire/wheel is located in the lugg age comport­
ment under the cargo floor cover . It is intended for short­
te rm use only.
Fi g. 2 20 S pare t ir e _.,,

_____________________________________________ W __ h_a _ t_ d_o_ I_ d _ o_ n_o_ w_ ? _ ___.ffl'I
3. Locate the proper mounting point for the jack and align
the jack below that point=>
page 319.
4. Lift the car with the jack=> page 319.
5. Remove the wheel with the flat tire and then install the
spare tire => page 320 .
6. Tighten all wheel bolts lightly.
7.
Lower the vehicle with the jack.
8. Use the wheel bolt wrench and
firmly tighten all wheel
bolts in a crisscross pattern=>
page 318.
9. Replace the decorative wheel cover* or the wheel bolt
caps*.
& WARNING
Always read and follow all WARNINGS and information=> & in
"Raising the vehicle" on
page 319 and => page 322. •
After changing a wheel
A wheel change is not complete without the doing the
following.
- Store and secure the wheel you replaced in the spare
wheel well .
Replace the tools and the jack in their proper location.
- Check the
tire pressure of the spare tire as soon as
possible.
- As soon as possible , have the
tightening torques on all
wheel bolts checked with a torque wrench. The correct
tightening torque is 90 ft lbs. (120 Nm).
Vehicle OP-eration
-Have the flat tire replaced as soon as possible.
[ i] Tips
• If you notice that the wheel bolts are corroded and difficult to turn
while changing a tire, they should be replaced before you check the tightening torque.
• Drive at reduced speed until you have the tightening torques
checked. •
Applies to ve hicles : w ith deco rative wheel cove rs
Decorative wheel covers
The decorative wheel covers must be removed first to
access the wheel bolts.
Removing
Fig. 221 Changing a
wheel: removing the
wheel cover
- Insert the hook provided with the vehicle tool kit in the
hole in the hub.
- Pull off the
decorative wheel cover=> fig. 221. •
Vehicle care Do-it-yourself service iTechnical data

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& WARNING (continued)
• Do not loosen the wheel bolts more than one turn before you
raise the vehicle with the jack. -You risk an injury.
(I) Tips
• Never use the hexagonal socket in the handle of the screwdriver to
loosen o r tighten the wheel bolts .
• If a wheel bolt is very tight, you may find it easier to loosen by
carefully pushing down on the end of th e wheel bolt wrench with
one
foot only .
As you do so, hold on to the car to keep your balance and
take ca re not to slip .•
Raising the vehicle
The vehicle must be li~ed with the jack first before the
wheel can be removed.
•
Fig. 224 Changing a
wheel: mounting
points for the jack
Vehicle OP-eration
Fig. 225 Close-up:
proper positioning of
jack
The location of the jack point is indicated by an indentation
on the underside of the vehicle=> fig. 224.
- Activate the
parking brake to prevent the vehicle from
rolling unintentionally.
- Shift into
1st gear on vehicles with manual transmission
or move the selector lever to the
P position on vehicles
with automatic transmission*.
- Find the
lifting point in the sill that is closest to the faulty
wheel => fig. 224.
Turn the handwheel on the
vehicle jack until the jaw
=> fig . 225 @ covers the
notch on the vehicle.
- Align the vehicle jack so the jaw@ covers the notch and
the base plate @ is flat on the floor. The base plate @
must be
vertical under the lifting point@.
- Install the rod on the vehicle jack: Insert the rod into the
opening on the handwheel. Turn the rod left or right to
secure it.
- Continue raising the jack with the rod until the wheel lifts
off the ground slightly. ..,_
Vehicle care Do-it-yourself service iTechnical data