
thoroughly checked by an authorized Audi
dealer or qualified workshop and the cause
corrected .
If the brake fluid level is too low ,
the brake warning/indicator light will i llum i
nate. Con tact an au thori zed Aud i dealer
im ·
mediately .
Changing brake fluid
Have the brake fluid changed by an experi
enced technician .
Brake fluid absorbs moist ure from the a ir. If
the water con tent in the brake fluid is too
h igh, corrosion in the brake system may resul t
after a per iod of t ime . The bo iling po int of the
brake fluid w ill also decrease considerably and
decrease b raking performance .
There fore, the brake flu id must be changed
e very two years . Always use new brake fluid
which conforms to Fede ral Motor Vehicle
Standard "FMVSS 116 DOT 4 ".
The brake flu id reservoir can be difficult to
reac h, therefore , we recommend that you
h ave the brake flu id changed by your author
iz ed
Audi dealer . Your deale r has the co rrect
too ls, the right b rake fluid and the know-how
to do this fo r you.
_& WARNING ,~
- Brake fluid is po isonous. I t must be s to r
ed only in the closed orig inal container
o ut o f the reac h of c hildren!
- Brake fa ilure can resu lt from old o r inap
propriate b rake fluid. Observe these pre
cautions :
- Use o nly bra ke fluid t hat meets SAE
specification
J 1703 and confo rms to
Federal Motor Vehicle Sta ndard 116 .
Always check wi th you r auth orized Audi
deale r to make s ure you are using the
correct brake f luid . The co rrec t type of
brake fluid is a lso indicated on the
brake fluid reservoir .
- The brake f lui d m ust be new. Heavy use
of the b rakes can ca use a vapor lock if
the brake fl uid is left in the system too
long . This can ser io usly affect the effi-
Checkin g and fillin g 243
ciency of the brakes as well as your
safety. Th is co uld resu lt in an accident.
(D Note
B ra ke fluid will damage the pa int o f you r
vehicle .
@ For the sake of the environment
Because o f the p rob lem of proper disposal
of bra ke fluid as well as the spec ia l t oo ls
r equire d an d the necessary expe rtise, we
recommend that yo u have the brake f luid
changed by yo ur authorized Aud i dea ler.
Battery
General information
Under n o rmal ope ra ti ng cond itions , the b at
te ry in yo ur Audi does not need any ma inte
nance . With
high outside temperat ures or
l ong daily drives we recommend that you have
the e lectrolyte leve l checked by an authorized
Audi dealer or qualified workshop. The elec
troly te level should also be checked each t ime
the battery is charged
c:> page 245 .
Have the battery checked when yo u take you r
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 disconnected from the veh icle elec
trical system for safety reasons
c:> .&. in Re
pair, care and disposal of the airbags on
page 171 .
Hybrid drive* : you can find important informa
tion about the high voltage battery under
c:> page 97.
Di sconnecting the battery terminals
Some vehicle functions (power window reg u
lators, for example) are lost if t he battery te r
mina ls are disconnected. These f unctions have
to be relearned after the ba ttery termina ls are
con nected aga in . To prevent th is, the battery
shou ld only be d isconnected from the veh icle
electrica l system when abso lutely necessary
fo r repa irs. ..,_
•
•

244 Checking and filling
Vehicles not driven for long periods
If you do not drive you r vehicle over a pe riod
of severa l days or weeks, electrical compo
nents are gradually cut back or switched off.
This reduces energy consumption and main
tains starting capability over a longer period
¢page 203.
Take into consideration that when yo u un lock
your vehicle, some convenience functions, such as the interior lights or the power seat
adjustment, may not be available. The con
venience funct ions w ill 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
start ing, and the headl ights, rear window de
fogger, etc., are used more often .
Avoid unnecessary power consumption, par
ticularly in city traffic or when traveling only
short distances . Let your authorized Audi
dealer check the capacity of the vehicle bat
tery before winter sets in¢
page 245. A well
cha rged battery w ill not only prevent starting
prob lems when the weather is cold , but will
a lso last longer .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart
ment under the floor. Before you check any
thing in the luggage compartment,
read and
heed all WARNINGS
¢ _&..
Hybr id drive*: you can find impo rtant informa
tion about the high voltage battery under
¢page 97 .
Always heed the safety warnings , when work
ing on the vehicle battery or the vehicle elec
trical system to prevent injury.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM BOLS and safety precaution s when working
on the battery.
@) Always wear eye protection .
I>. Battery acid contains sulfuric acid_-Al
~ ways wear gloves and eye protection.
~ No
\!=51 -sparks
-flames
-smoking.
A When a battery is charged, it produces
~ hydrogen gas which is explosive and
could cause personal injury.
/G Always keep the battery well out of
V!!JI reach of children.
A WARNING "--
Whenever working on the battery or on
the electrical system, there is the risk of
in jury, accident and even fi re. Read and
heed the following WARNINGS :
- Always wear eye protection. Do not let
battery ac id or any lead particles get on
your skin or clothing. Shield your eyes .
Exp losive gases can cause blindness or
other injury .
- Ba ttery acid contains sulfuric acid. Sulfu
ric acid can ca use blindness and severe
burns .
- Always wear gloves and eye protection .
Do not tilt the battery because acid
could leak out of the ventilat ion open
i ngs.
- If you get battery ac id in your eyes or
on your skin, immediately rinse with
cold water fo r several minutes and get
med ical attention .
-If you should ingest any battery acid,
seek medical attention immediately.
- Do not expose the battery to an open
flame, electr ic sparks or an open light.
- Do not smoke.
-
1
I

-Do not interchange the positive and neg
ative cables .
- 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 sys
tem, disconnect the negative ground ca
ble .
- Before performing any work on the elec
trical system , switch off the engine and
ignition as well as any electrical equip
ment. The negative cable on the battery
must be disconnected. If you are just go
ing 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! Other
wise 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 switch
ed off. Reconnect the positive cable first
and then the negative cable. Never inter
change the cables - this could start a fire!
- Never charge a fro zen or a thawed-out
battery. It could explode! If a battery has
frozen, then it must be replaced. A dis
charged battery can freeze over at 32°F
(OOC) .
-Make sure the vent hose is always attach
ed to the opening on the side of the bat
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! Al
ways replace a damaged battery.
Checking and filling 245
A WARNING
California Proposition 65 Warning:
- Battery posts, terminals and related ac cessories contain lead and lead com
pounds, chemicals known to the State of
California to cause cancer and reproduc
tive problems . Wash hands after han
dling.
Q) Note
- Do not disconnect the vehicle battery
when the ignition is switched on or when
the engine is running, otherwise , you will
damage electronic components in the
electrical system.
- If your vehicle is going to stand for a
long period of time without being driven,
protect the battery from "freezing", oth
erwise it will be damaged and will then
have to be replaced.
Battery charging
Starting the engine requires a well charged
battery.
Fig. 201 Engin e compart ment: Co nn ectors for charger
and j umper cab les
Always read and heed all WARNINGS below
¢ .&. and ¢,&. in Working on the battery on
page 244.
~ Hybrid drive*: read the important informa
tion concerning a dead high voltage battery
under
¢ page 105.
~ Turn off the ignition and all electrical con
sumers.
~ Make sur e the area is well ventilated when
you charge the battery . ..,.

246 Checking and filling
• Open the engine hood ¢ page 233.
• Remov e the cover (!) by pressing on the ar
row ¢
fig. 201.
• Open the cover @on the positive term inal.
• Connect the charger connectors according
to the instruct ions to the
jump start bolts.
(Bolts under the cover = "positive ", Bolts
with hex head= "negative").
• Only now plug the mains lead for the charg
i ng equipment into the wall outlet and turn
iton ¢,&. .
• Make sure the charging rate is not over
30 amps/14.8 Volt.
• When the battery is fully charged: Turn the
charging equ ipment off and remove the
mains lead from the wall outlet.
• Now remove the clamps for the charging
equipment.
• Close the cover @on the positive term inal
and re-install the cover (!).
• Close the hood ¢
page 233.
A discharged battery can freeze at tempera
tures of on ly 32 °F (0 °C). A llow a frozen bat
tery to thaw completely befo re attempt ing to
cha rge it~ &. . H owever, we recommend not
using a thawed battery again because the bat
tery casing can be cracked due to ice forma
tion and can leak battery acid.
Battery charging (Maximum charging rate
of
30 amps/14.8 Volt)
When charging at low voltages (e.g . with a
trickle charger ), the battery cables do not
have to be d isconnected first. The battery
caps should
not be opened when charging a
battery .
It is not necessary to remove the battery from
the luggage compartment.
Fast charging the battery (charging rate
above 14.8 Volts )
For technical reasons do not use a battery
charger that uses voltage greater than 14.8
Volts to charge your vehicle's battery.
.&_ WARNING
Charging a battery can be dangerous. -
Always follow the operating instructions
provided by the battery charger manu
facturer when charging your battery.
- Never charge a frozen battery. It may ex
plode because of gas trapped in the ice.
Allow a frozen battery to thaw out first.
- Do not reuse batteries wh ich were fro
zen. 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 elec
tr ica l spark. Do not smoke. Hydrogen gas
generated by the battery is explosive.
- To reduce the danger of explosion, never
connect or disconnect charger cab les
while the charger is ope rat ing.
- Fast charging a battery is dangerous and
should only be attempted by a compe
tent technician with the proper equip
ment.
- Battery acid that may spill dur ing charg
ing should be washed off with a solution
of warm wat er and baking soda to neu
tralize the acid.
(I) Note
Never use a fast charger as a booster to
start the engine. This will seriously dam
age sensitive electronic components, such
as contro l units, re lays, radio, etc., as well
as the battery charger.
Battery replacement
The new battery must have the same specifi
cations and dimensions as the original equip
ment battery.
Intelligent energy management in your vehi
cle is responsible for distributing the electri
ca l energy throughout your vehicle
¢
page 203 . The intelligent energy manage
ment system will keep the engine battery
charged better then vehicles without this sys
tem . To make sure the additional electrical en
ergy is ava ilable once again after you have
changed the battery, we recommend that you ..,.

install batteries of the same type and manu
facture only (the same as those installed at
the t ime your vehicle was delivered) . Specifi
cations are listed on the battery housing. Your
authorized dealer must code the battery in
the energy management system to enable you
to use the energy management functions cor rectly after replacing the battery .
If it is not possible to use a battery of this
type, the new battery must have the same ca
pacity, voltage (12 volts), amperage, con
struction and plug sea ling .
When installing the battery, make sure the ig
nition and all electr ica l consumers are turned
off.
(D Note
- Make sure the ventilation hose on the
s ide of the batte ry is connected, other
wise fumes or battery acid can leak out .
- Vehicles with the Start-Stop-System* are
equipped with a special cycle-proof AGM
battery . Installing a different type of
battery can cause problems in the vehi
cle elec trical system. When replacing the
vehicle battery, always insta ll one with
the same specifications as the original
battery.
@ For the sake of the environment
Because of the problem of proper disposal
of a battery, we recommend your author
ized Audi dealer change the battery for
you. Batteries contain su lfuric acid and
lead and must always be disposed of prop
erly in compliance with all environmental
regu lations . D isposing of vehicle batteries
improperly is very dangerous to the envi
ronment .
Checkin g and fillin g 247
Windshield/headlight
washer container
Fig. 202 Eng in e compar tment: cov er on the w inds hield
and headl ight* washe r fl uid reservoir
The washer fluid container is marked with the
symbol
Q on its cap c::> fig. 202, c::> page 235,
fig . 196 .
.., Before you check anything in the engine
compartment,
always read and heed all
WARNINGS c::> &. in Working in the engine
compartment on page 233 .
.., Lift the filler cap tongue to add washer flu
id . You can fill the container to the top.
.., Press the cap back onto the filler neck after
f illing the container.
You can find the reservoir
capacity in the table
in
c::> page 292.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on
the washer jets. A lways add a glass cleaner
solution (with frost protection in the winter).
(D Note
Do not mix engine coolant antifreeze o r
any other additives to fill up the wind
sh ield washer reservoir.

250 Tires and wheels
Groove
means the space between two adjacent tread
ribs .
Load rating (code)
means the maximum load that a tire is rated
to carry for a given inflation pressure. You
may not find this informat ion on all tires be
cause it is not req uired by law.
Maximum load rating
means the load rating for a t ire at the max i
mum permissible inflation pressure for that
tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity we ight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure
to which a tire may be inflated. Also called
"maximum inflation pressure ."
Normal occupant weight
means 150 lbs. (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle .
Occupant distribution
means distribution of occupants in a vehicle.
Outer diameter
means the overa ll diameter of an inflated new
tire.
Overall width
means the linear distance between the exteri
ors of the sidewalls of an inflated tire, includ
ing elevations due to labeling, decorations, or
protective bands o r ribs .
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the combined weight of those insta lled
regular production options weighing over 5
lbs. (2.3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory we ight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special tr im .
Radial ply tire
means a pneumat ic tire in which the ply cords
that extend to the beads are laid at substan
t ia lly 90 degrees to the center line of the
tread .
Recommended inflation pressure
see<=> page 249, Cold tire inflation pressure.
Reinforced tire
means a t ire design to operate at higher loads
and at h igher inflation pressures than the cor
responding standa rd tire. Reinforced tires
may be identified as "XL" "xl" "EXTRA LOAD"
' ' '
or "RF" on the sidewa ll.
Rim
means a metal support for a tire or a tire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal diameter of the bead seat. If
you change your wheel s ize, you will have to
purchase new tires to match the new rim di
ameter.
Rim size designation
means r im diameter and width .
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a tire between the
t read and bead.

What do I do now?
Jack, tools and
inflatable spare tire
Onboard tool kit and vehicle jack
The vehicle tools and vehicle jack* are stored
in the luggage compartment under the floor
cover.
Fig . 209 Luggage co mpa rtment: onboard too l kit and
v e hicle jack
The vehicle jack* is sto red under the on board
tool kit¢
fig. 209.
Hybr id drive*: the storage location of the on
board tool kit varies
¢ page 104.
The on board tool kit includes:
- Hook for removing wheel covers*
- Plastic hook to remove wheel bolt covers*
- Al ignment p in for changing wheels
- Wheel bolt wrench
- Folding chocks
- Screwdriver with reversible blade
- Socket (removable Torx socket)*
- 10 x 13 open ended wrench (for disconnect-
ing the battery cables)
- Towing eye
Before storing the jack*, make sure it is
wound back down as far as it will go.
A WARNING
Imprope r use of the vehicle jack* can
cause serious personal injuries.
- Never use the j ack* supplied with your
Audi on another vehicle, particularly on a heavier one . The jack* is only suitable for
use on the vehicle it came with .
What do I d o now ? 269
-Using a bumper jack to ra ise the vehicle
will damage the bumper system. The
jack may slip, causing injury.
- Never support your vehicle on cinder
blocks, br icks or other objects. These
may not be able to support the load and
could cause injury when they fa il.
- Never start or run the engine while the
veh icle is supported by the jack* .
- If you must work under the vehicle, al
ways use safety stands specifically de signed for th is purpose .
- Never use the hexagonal socket in the
handle of the screwdriver to loosen or
tighten the wheel bolts .
- Always make sure the inflatable spare
tire* and even a flat tire are secured in
place and not loose, otherwise they
could fly forward, causi ng personal injury
to passengers in the vehicle in an acci
dent or sudden maneuver.
(0 Tips
Some of the on board items listed above
a re provided on certain models only or are
optiona l extras.
Folding chocks
The folding chocks are part of the on board
tool kit.
Fig . 210 Ope ning folding chocks .
To use the chocks, you first have to raise the
support plate¢
fig. 210 (D and then insert
the locking plate with the two "tabs" into the
elongated holes in the base plate@¢& . ""

I
I
I
-No. Consumer
6
Headlights range control sys-
tern/Co rnering light
7 Headligh t (corner ing l ight)
Control modules (electrome-
8
chanical parking brake, shock
absorber, quattro Sport, trailer
hitch), DCDC converter
9 Adaptive cruise contro
l or high
voltage battery (hybrid drive)
12 Headlight range contro
l, park
ing system
13 Airbag
14 Rear wiper
15 Auxiliary fuse (ins
trument pan
el)
Auxilia ry fuse terminal 15 (en-
16 gine area)
Fuse panel
@ (brown )
1 E lectric exhaust door
2
3
4
5
6
7 Brake light sensor or brake ped
al movement sensor (hybrid
drive)
Fuel pump
Brake booster (hybrid drive)
Left seat heating with/without
seat venti
lation
ESC
Horn
Left fron t door (window regula -
8 tor, central locking, mirror,
sw itch, lighting)
-9 Wiper motor
10 ESC
Left rear door (window regula
l l tor, sw itch, light ing)
12 Rain and light sensor
Fuse panel © (red)
3 Lumbar support
4 Dynam ic ste ering
5 Climatized cupholder
-Amps
5/ 7,5
7,5
5
5/7,5
5
5
5
15
10
40
5/10
5
25
25
1 5/30
5
15
30
30
2 5
30
5
10
35 10
-
Fu se s and bulb s 281
No. Consumer
6 W
indshield washer system,
headlamp washer system 35
7
Vehicle electrical system control
module 1 20
8
Vehicle electrical system control
module 1 30
9 Panorama su
nroof
10 Vehicle elec
trical system control
30
mod ule 1
11 Sun shade (panorama sunroof)
20
12 Anti-theft alarm warning sys-
tern 5
Right cockpit fuse assignment
Fi g. 22 5 Right cockp it : fuse panel wit h plast ic cl ip
No. Consumer Amps
Fuse panel @ (black )
5 Steering column switch module 5
7 Te
rm inal 15 d iagnost ic connec-
tor
5
8 Gateway (Databus diagnostic in-5 terface)
-..
9 Supp
lementary heater 5
Fuse panel @ (brown)
1 CD /D V D p layer 5