center AUDI A4 SEDAN 2013 Service Manual

steering wheel wi ll be easy to move . Re­
initialization might be necessary if the steer ­
ing wheel was moved hard to the left and
right while the vehicle was not moving. The
d isplay goes out as soon as in itializat ion is
comp lete .
A WARNING
Have the dynamic steering* system mal­
function repaired as soon as poss ible by an
authori zed A udi dealer or any qualified
workshop -risk of accident!
@ Tips
- If the . or 1;r,ij indicator light only stays
on for a short t ime, you may continue
driving.
- The dynamic steering * stability systems
are not available in t he event of a system
malfunction.
- Fo r additional informat ion on dynamic
stee ring*, re fer to
c::> page 111.
Driving with your
quattro ®
Applies to vehicles: with all-wheel drive
With oil-wheel drive, oil four wheels ore driv­
en.
General information
W ith all -whee l dr ive, power is dis tributed to
a ll fo ur wheels. This happens automatica lly
depending on yo ur driving sty le and the road
conditions at the time. See also
c::> page 184 .
A center different ial d is tributes the dr iv ing
power var iably to the front and rear axle. It
wo rks together with se lective whee l to rque
contro l, which activates when driving throug h
curves
c::> page 185. With the sport d ifferen­
tial*, power distribution to the rear w heels is
variable and can be adjusted with Audi drive se lect
c::> page 111 .
The all-wheel drive concept is designed for
hi gh engine power. Your vehicle is exception­
ally powerful and has exce llent dr iving charac ­
ter ist ics both under normal d riving conditions
Int ellig ent technolog y 189
and on snow and ice . Always read and follow
safety precautions
c::> & .
Winter tires
When dr iving in t he winter, yo ur vehicle wi th
a ll -wheel drive h as an adv ant age, even w it h
regular tires. In wi nter road conditions it may
be advisable to mount winter tires (or all -sea ­
son tires) for improved driveability and brak­
ing : these tires must be mounted on
all fou r
wheels .
See also c::> page 245, Winter tires.
Tire chains
Where tire chains a re mandatory on certain
roads, this no rma lly also app lies to veh icles
with all-wheel drive
c::> page 246 , Snow
chains .
Replacing wheels /tires
Vehicles wi th a ll-wheel drive must alw ays
have tires of the same s ize. A lso avoid tires
with different tread depths . For detai ls see
page
c::> page 241, New tires and replacing
tires and wheels.
Off-Road driving?
Your A udi does no t have enough g ro und cle ar­
ance to be used as an off -road vehi cle. It is
therefore best to avoi d rough tracks and un­
even te rrain as much as possib le . Also refer to
c::> page 192.
A WARNING
A lways ad just yo ur dr iv ing to road and traf­
fic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks .
-Al tho ugh t he all-wheel driv e is ve ry ef­
fective, always remember that braking
capacity is lim ited by tire t raction. You
should t herefore not d rive a t excessive
speeds on i cy or slippery ro ad s urfa ces.
- On wet road surfa ces, be careful not to
d rive too fast bec ause the fron t whee ls
co uld begin to slide on top of the water
(aquaplani ng) . If th is should occur, yo u •
•

232 Tires and wheels
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressu re
to which a tire may be inflated. Also called
"maximum inflation p ressure."
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 inf lated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing e levations due to labeling, decorations, or
protective bands or ribs.
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the comb ined weight of those installed
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 weight, including
heavy duty brakes, r ide leve lers, roof rack,
heavy duty battery, and specia l trim .
Radial ply tire
means a pneumatic tir e in which the p ly cords
that extend to the beads are laid at substan­
tially 90 degrees to the centerline of the
tread . Recommended inflation pressure
see
~
page 231, 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 standard tire. Reinforced tires
may be identified as "XL", "xl", "EXTRA LOAD",
o r "R F" on the sidewall.
Rim
means a metal support for a tire or a t ire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter 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 rim diameter and width.
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a tire between the
t read and bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
ratings range from 93 mph (150 km/h) to
186 mph (298 km/h)
~ page 242. You may
not find this information on all tires because
it is not requ ired by law.
The speed rating letter code, where applica­
ble , is molded on the tire sidewall and indi­
cates the max imum perm issible road speeds
~ A in Winter tires on page 246.
Tire pressure monitoring system*
means a system that detects when one or
more of a veh icle's tires are underinflated and
illuminates a low tire pressure warning tell­
tale.

24 6 T ire s and whee ls
was manufactured . Please see q page 242,
Speed roting (letter code) for a listing of the
speed rat ing letter codes and the maximum
speed at which the tires can be driven .
The speed rating letter code( ¢
page 232) is
on the side wall of the tire
c::> page 241.
A WARNING
Winter tires have maximum speed limits
that may be lower than your vehicle's max­
imum speed . Always know the maximum
speed before driving off . Never drive faster
than the speed permitted for your specific
w inter t ires. This will cause damage to the
tires leading to an accident and serious
personal inj ury to you and your passen­
gers.
A WARNING
=
Driving faster than the maximum speed
for which the winter tires on your vehicle
were designed can cause tire failure in­
cluding a blowout and sudden deflation,
loss of control, crashes and serious per­
sonal injuries. Have worn or damaged tires
replaced immed iately .
- Winter tires have maximum speed rat ing
that may be lower than your veh icle's
maximum speed .
- Never drive faster than the speed for
which the winter or other tires installed on your vehicle are rated.
A WARNING
Always adjust your driving to the road and
traffic conditions. Never let the good ac­
celeration of the winter tires and all whee l
drive tempt you into taking extra r is ks . A l­
ways remember :
- When brak ing , an a ll whee l drive vehicle
hand les in the same way as a front drive
vehicle.
- Drive caref ully and reduce your speed on
icy and slippery roads, even winter tires
cannot he lp under black ice conditions.
{® Fo r the s ake of the en vironment
Use summer tires when weather condi­
tions permit. They are quieter, do not wear
as quickly and reduce fuel consumption.
Snow chains
Snow cha ins may be f itted only to the front
wheels, and only to certain tire sizes . Ask your
authorized Aud i dealer on which tire sizes
snow chains can be used.
The snow chains must have low-prof ile links
and must not be th icker than 0.53 inch
(13 .5 mm), includ ing the lock .
Remove wheel center covers and trim discs
before putt ing snow chains on your vehicle
c::> @ . For safety reasons cover caps must then
be fitted over the wheel bolts . These are avail­
able from autho rized Aud i dealers.
A WARNING
Using the wrong snow chai ns for your veh i­
cle or instal ling them incorrect ly can in­
crease the risk of loss of cont ro l leading to
serious personal injury.
- Snow chains are available in different
sizes . Always make sure to follow the in­
structions provided by the snow chain manufacturer.
- When driving with snow chains never
drive faster than the speed permitted for
your specif ic snow chains.
- Always observe local regulations .
(D Note
-Remove snow chains before dr iv ing on
roads not covered with snow to avoid
damaging tires and wearing the snow
chains down unnecessarily.
- Snow chains, which come into direct con ­
tact with the whee l rim, can scratch or
damage it . Therefore, make sure that the
snow chains are s uitably covered. Check
the pos ition of the snow chains after

256 What do I do now?
-Do not raise the vehicle unti l yo u are
sure the jack is securely engaged.
- Passengers must not remain in the ve­
h icle when it is jacked up.
- Make sure that passengers wait in a
safe p lace away from the vehicle and
well away from the road and traffic.
- Make sure jack position is correct, ad­
just as necessary and then continue to ra ise the jack.
CD Note
Do not lift the vehicle by the sill. Position
the vehicle jack only at the designated lift­
ing points on the sill. Otherwise, your vehi­
cle will be damaged.
Taking the wheel off/installing the spare
tire
Follow these instructions step-by-step for
changing the wheel .
Fig. 187 Changing a w hee l: usi ng the screwdriver han ·
dle (with the blade r~mo ved) to turn th e bo lts
Fig. 188 C hangin g a w hee l: alig nmen t pin inside the
to p hole
After you have loosened a ll wheel bolts and
ra ised the veh icle off the ground, remove and
replace the wheel as follows:
Removing the wheel
.,. Remove the topmost whee l bolt completely
with the
hexagonal socket in the screwdriv­
er handle (vehicle tool kit)¢
fig. 187 and
set it aside on a
clean surface .
.,. Screw the threaded end of the
alignment
pin
from the tool kit hand-t ight into the
empty bolt hole ¢
fig. 188.
.,. Then remove the other wheel bolts as de ­
scribed above.
.,. Ta ke off the wheel leaving the alignment
pin in the bolt hole
c::>(D .
Putting on the inflatable spare tire
.,. Push the spare tire over the alignment p in.
.,. Screw on the wheel bolts and tighten them
slightly using the hexagonal socket .
.,. Remove the alignment pin and insert and
tighten the remain ing wheel bolt slightly
like the rest.
.,. Turn the jack hand le counter -clockwise to
lower the veh icle until the jack is fully re­
leased .
.,. Use the wheel bolt wrench to tighten all
wheel bolts firmly
c::> page 254 . Tighten
them
in a crisscross pattern, from one bolt
to the (approximately) opposite one, to keep
the wheel centered .
.,. Perform the steps required after changing
the wheel
c::> page 253, After changing a
wheel.
T he hexagonal socket ma kes it easier to re­
move the wheel bolts from the rim. Care
should be tak en when removing the reversible
blade .
CD Note
When removing or installing the wheel,
the rim could hit the brake rotor and dam­
age the rotor. Work carefu lly and have a
second person to help you.
(D Tips
-When mounting tires with unidirectional
tread design
make sure the tread pat ­
tern is pointed the right way
c::>page257. ..,.

266 Emergency situations
loading the vehicle onto a flat bed truck
Fig . 19 8 Vehicle o n flat bed tr uck
Front hook up
• Align the ve hicle w ith the centerline of t he
ca r ca rr ier ramp .
• Attach the w inch hook to the front towline
eye previou sly insta lled .
Rear hook up
• Align the ve hicle w ith the centerline of t he
car ca rrier ramp.
• Attach the w inch hook to the rear towline
eye previously insta lled.
@ Tips
Check carefully to make sure the hook- up
is se cure befor e moving th e ca r u p the flat·
bed truck ramp.
Lifting vehicle
lifting with workshop hoist and with
floor jack
The vehicle may only be li~ed at the lifting
points illustrated.
Fi g. 199 Fro nt lift ing po int
:g 0 N
" O> a,
Fig. 20 0 Rear lifting point
• Read and heed WARNING q .&.
• Locate lifting poi nts q fig. 199 and
q fig. 200 .
• Adjust lifting arms of wo rks hop ho ist o r
floor ja ck to ma tc h veh icle lift ing poi nts .
• Insert a rubber pad be tween the floo r jack/
workshop hoist and t he lift ing points.
If you mu st lift your vehi cle with a floor jack
to work underneath, be sure the vehicle is
safely supported on stand s intended for this
purpose.
Front lifting point
T he lift ing po in t is loca ted o n the floo r pan re ­
i nforcemen t abo ut a t the same leve l as the
jack mounting point
q fig. 199. Do not lift
the vehicle at the vertical sill reinforcement .
Rear lifting point
T he lifti ng poi nt is located o n the vert ic al rei n­
f o rcement of the lower s il l for the onboard
jac k
c> fig. 200 .
lifting with vehicle jack
Refer to c:> page 2 55.
A WARNING
= -
-To r educe the risk of ser ious injury and
veh icle damage.
- Always lift the vehicle only at the spe­
cia l workshop hoist and floor jac k lift
po ints illustrated
c> fig. 199 and
c> fig. 200.
- Failure t o lift the vehicle at these
po ints could cause the vehicle to tilt or
fall from a lift if there is a change i n ve-
hicle weight dist ribution and balance.
~

272 Consumer Information
Consumer Information
Warranty coverages
You r Audi is covered by the following war­
ranties:
- New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfo-
ration
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Control Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regarding your warran­
ties can be found in your
Warranty & Mainte­
nance booklet .
Operating your vehicle
outside the U.S.A. or
Canada
Government regu lations in the United States
and Canada require that automobiles meet
specific emission regulations and safety
standards. Therefore, veh icles built for the
U.S.A . and Canada differ from vehicles sold in
other countries .
If you p lan to take your vehicle outside the
continental limits of the United States or Can­
ada, there is the possibility that:
- unleaded fuels for vehicles with cata lytic
converter may not be available;
- fuel may have a considerably lowe r octane
rating. Improper fuel may cause engine
damage ;
- service may be inadequate due to lack of
proper service facilities, tools or testing
equipment ;
- replacement pa rts may not be readily availa­
ble.
- Navigation systems for vehicles built for the
U.S.A. and Canada will not necessar ily work
in Europe, and may not work in other coun­
tries outside of North America.
(D Note
Audi cannot be responsible for mechanical
damage that could result from inadequate
fuel, service or parts availability.
Audi Service Repair Manuals and Literature
Audi Official Factory Service Manuals and Lit­
erature are published as soon as possible after
model introduction. Service manuals and lit­
erature are available to order from the Audi
T echnical Literature Ordering Center at:
www.audi.techliterature.com
Maintenance
General
Your vehicle has been designed to help keep
maintenance requirements to a minimum.
However, a certain amount of regular mainte­
nance is still necessary to assure your vehicle's
s afety, economy and rel iability. For detailed
vehicle maintenance consult your Warranty &
Maintenance booklet.
Under difficult operating conditions, for ex­
ample at extremely low outside temperatures,
i n very dusty regions , when towing a trailer
very frequently, etc., some service work
should be performed between the intervals
specified. This applies particularly to:
- oil changes, and
- cleaning or replacing the air filter .
(® For the sake of the environment
By regularly maintaining your vehicle, you
help make sure that emission standards
are maintained, thus minimizing adverse
effects on the environment.
Important considerations for you and
your vehicle
The increasing use of electronics, sophisticat­
ed fuel injection and emission contro l sys-
tems, and the genera lly increasing technical
liJJ,

278 Index
Automatic Shift Lock (ASL) . . . . . . . . . . . . 86
Automatic transmission . . . . . . . . . . . 83, 89
Automatic Shift Lock (ASL) . . . . . . . . . . . 86
Driving .. .. .... .. ... .... .. .. .. .. .. 84
Dynamic shift program . . . . . . . . . . . . . . 87
Emergency mode . . . . . . . . . . . . . . . . . . . 88
Emergency release . . . . . . . . . . . . . . 89, 95
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . 87
Manual shift program . . . . . . . . . . . . . . . 88
multitronic . . . . . . . . . . . . . . . . . . . . . . . . 83
Removal lock (ignition key) ..... .. .. .. 72
Selector lever . . . . . . . . . . . . . . . . . . . . . . 85
S tron ic .. .. ................ ... ... . 89
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 83
also refer to S tron ic transmission ..... 89
Automatic wipers . . . . . . . . . . . . . . . . . . . . 50
Auto Safety Hotline ................. 134
Average speed . . . . . . . . . . . . . . . . . . . . . . . 25
Avoid damaging the vehicle .. .. .. .... . 192
B
Battery ..... ................ .. 17,225
Battery location inside the luggage com-
partment ........ ....... .. .. .... .
226
Charging . .. ... .. ..... ... .... .. .. . 228
Important warnings when working on
the battery .... ... .... ..... .. .. .. .
226
Jump starting . ........... .. .. .. .. . 262
Low . .. .. .. ............. .. .. .. .. . 190
Replacing the battery . .. .. .. .. .. .. . 229
State of charge ............ ... .... . 190
Winter operation .......... ... .... . 225
Working on the battery ..... .... ... . 226
Before driving .. ........... .... .... . 126
Bio-ethanol (Fuel) ............ .. .. .. . 211
Blended gasoline ................... 210
Blower (automatic climate control) . . . . . . 70
Body cavity sealing ........... .. .. .. . 204
Booster seats ...... ....... .. .. .... . 173
Brake fluid
Changing the brake flu id . ........ .. .
225
Check ing the brake fluid level . .. .. ... 224
Reservoir ... ............ .. .. .. .. . 224
What is the correct brake fluid level? . . 224
What should I do if the brake fluid warn-
ing light comes on? ........ ... .. ...
224
Brake system .... .. ............. .... 224
Anti- lock braking system ............. 19
Brake assist system ................ 184
Brake fluid .... .. ......... .... .... 224
Brake fluid specifications for refill and re-
placement ...... ................ .
225
Brake light defective . . . . . . . . . . . . . . . . 21
Brake power assist unit .......... ... 187
Brakes .. .. .. .. . ............ .... .. 187
Ceramic brakes . .. ... ... ... .... .. .. 187
Electromechanical parking brake ...... 77
Warning/indicator lights .......... .. . 15
Worn brake pads symbol . . . . . . . . . . . . . 20
Braking
Emergency braking funct ion ... .. .. .. .
79
braking guard . . . . . . . . . . . . . . . . . . . . . . . 97
Messages ..... .. .. ... ........... . 105
Settings .. ... ... .. .............. . 104
Break-in period . . . . . . . . . . . . . . . . . . . . . 192
Tires . .. .. .. .. .. ............. .. .. 192
Bulbs .......... .. ............. .... 261
C
Californ ia Proposition 65 Warn ing . .... 216
Battery specific .. ... .......... .. .. 227
Capac1t1es .. ... ... .. .............. . 270
Car care ........ .. ............. .... 199
Interior . .. .. .. .. ............. .. .. 205
Plastic and vinyl .. ... ...... .... .. .. 202
Care of exterior .... ................. 199
Cargo area
refer to Luggage compartment. . . 64, 132
Catalytic converter . . . . . . . . . . . . . . . . . . 193
Center armrest . . . . . . . . . . . . . . . . . . . . . . 56
Central lock ing .. .. .......... ...... .. 32
Central lock ing switch .... ...... .. .. . 36
Convenience key . . . . . . . . . . . . . . . . . . . . 36
Remote control key ............ .... . 35
Ceramic b rake ro tors
New brake pads .. ..... ........... .
18 7
Certification . ..... ................ . 275
Changing a flat t ire . ......... .... .... 252
Changing a wheel .. ......... .... .... 252
Changing engine oil
Chassis 221
Undercoating .. .. ... .. ... ..... .. .. 204