2015 AUDI A8 ECO mode

- the temperature of the engine coolant rises
due to th e heat bui ld-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
.&_ WARNING
- To reduce the r isk of personal injury nev­
er touch the radiator fan.
- The auxiliary electr ic fan is temperature
controlled and can switch on sudden ly
even when the engine is not runn ing.
- The auxiliary radiator fan switches on au­ tomat ically when the engine coolant
reaches a certain temperature and will
continue to run until the coolant temper ­
at ure drops.
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
N N
-N
i
F ig . 2 05 Eng ine co mpartmen t: cove r on the b rake f lui d
r eservo ir
Before you check anything in th e engine com­
partment,
alwa ys read and he ed all WARN­
INGS c::> .&. in Working in the engine compart­
ment on page 2 28.
~ Read the brake fluid level from the brake
fl uid reservo ir ~
fig . 205, c::> page 230. The
brake f luid leve l must be betwee n the "M IN"
and "M AX" marki ngs.
The location of the brake fl uid reservo ir can be
see n in t he engi ne comp artment illus trati on
c::> page 230.
Checkin g and fillin g 239
The fluid level may d rop slightly afte r some
time due to the automatic adjustment of the
brake pads . T his is not cause for alarm .
If the brake flu id leve l falls considerably be­
low the "MIN" mark, the brake warning/indi­
cator light . (U.S. models) . (Canadian
models) w ill come on
~ page 14 . Do not con­
tin ue to operate the vehicle . The complete
brake sys tem should be thoroughly checked
by an authorized Audi dea ler or other quali ­
fied facility and the cause corrected.
If the
brake f lu id leve l is too low, the brake warning/
indica tor ligh t will illumi nate. Conta ct an au­
thorized Aud i de aler
immediately .
Changing brake fluid
Have the brake fluid changed by an experi­
en ced technician.
B rake fluid absorbs moisture from the air . If
the water content in the brake fluid is too
high, co rrosion in the brake system may resu lt
after a pe riod of time. The boiling point of the
brake f lu id will also dec rease conside rably and
decrease brak ing performance.
T herefo re , the bra ke fluid must be changed
every tw o year s. Always use new br ake f lu id
which con forms to Federal Mo tor Veh icle
Standard " FMVSS 116 DOT 4".
T he bra ke fluid reservo ir can be d iff icu lt to
reach, the refore, we recommend that you
have the bra ke fluid changed by your author­
ized
Audi dealer. Your dealer has the cor rect
tools, the right brake fluid and the know -how
to do this for you.
A WARNING
---- Brake flu id is poisonous. It must be stor­
ed only in the closed or iginal container
out of the reach of children!
- Brake failure can resu lt from old or inap­
prop riate brake f lu id. Observe these pre­
cautions:
- U se only brake fluid tha t meets SAE
specificat ion
J 1703 and conforms to
Federa l Motor Vehicle Standard 116.

250 Tires and wheels
Bear in mind that the tire pressure monitoring
system* can only monitor the tire pressures
you have stored . The system does not recog­
nize the load condit ion of your vehicle.
The effectiveness of the tire pressure monitor ­
ing system* will be impaired if you store nor­
mal load pressures but then operate the vehi ­
cle at its max imum load
c:> &. .
See the illustration c:> fig. 208 for the location
of the label on driver's side B-pillar (color of
the act ua l label and exact location on the ve­
hicle will vary slightly). Note
that the following table is accurate at
the time of going to press and is subject to
change. In the event of d iscrepancies, the t ire
pressure label is located on the driver's side B­
pillar always takes precedence.
The table below lists the recommended cold
t ir e inflation pressures for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
led on the respective models as orig inal
equipment, or as a factory opt ion.
Tire pressure
Model/En- Tire designation normal load condition full load condition
gine fronta> reara>
front rear
PSI kPA
PSI kPA PSI kPA PSI kPA
A8/A8 L: 235/55 R18 104H
35 240 32 220 36 250 38 260
3.0 liter
255/45 R19 104H 35 240 32 220 36 250 38 260
6-cylinder
265/40 R20 104H 35 240 32 220 36 250 38 260
265/40 R20 104V 33 230 32 220 33 230 35 240
275/35 R21103Y XL 35 240 32 220 36 250 35 240
A8/A8 L: 235/55 R18 104H 35 240
32 220 38 260 38 260
4.0 liter
255/45 R19 104H 35 240 32 220 38 260 38 260
8-cylinder
265/40 R20 104H 35 240
32 220
38 260
38 260
265/40 R20 104V 33 230 32 220
35 240 35 240
275/35 R21103Y
XL 35 240
32 220
38 260
38 260
ASL
: 265/40 R20 104V 35 240 32 220 36 250 35 240
6.3 liter
255/45 R19 104H 36 250 32 220
39 270
38 260
12-cylin-
265/40 R20 104H 36 250 32 220 39 270 38 260
der
275/35 R21103Y XL
35 240 32 220 36 250
35 240
58: 265/40 R20 104V 36 250 32 220
39 270 38 260
4.0 liter
265/35 R21101 Y 39 270 35 240 44 300 42 290
8-cylinder
275/35 R21103Y XL 39 270
35 240
44
300 42
290
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side-
wall.
al n orma l lo ad co ndi tio n~ page 249.
The correct tire pressure for the spare wheel is
locat ed on a label on the driver's side B-pillar.
Because technical changes may be made to
ve hicl e equipment during the model year, al­
ways compa re the tire size designation on the tire
pressu re lab el on your vehicle wi th the
tires on your vehicle. Make sure that the tire
s iz e inform ation on the vehicle label is the
same as the size of the tires on the vehicle.
This is espec ially important if the vehicle be-
l ongs to someone e lse or yo u bought the ..,.

26 2 T ire s and wheel s
chains because the vehicle will be ex­
tremely low. If you do drive with snow
chains on while the vehicle is at this lev­
el, the snow chains might severe ly dam­
age the wheelhouse and other parts of
the veh icle.
(D} Tips
Where snow chains are mandatory oncer­
tain roads, this normally also applies to
veh icles with All Wheel Drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory installed r ims. If different rims
are fit­
ted, the correct wheel bolts with the right length and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
secure ly and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bolts from a different vehicle -even if it
is the same mode l
¢page 292.
_& WARNING
Imprope rly tig htened o r maintained whee l
bolts can be come loose ca using loss of
contro l, a co llision and serious persona l in­
jury.
- Always keep the wheel bol ts and the
threads in the wheel hubs clean so the
wheel bolts can tu rn easily and be prop­
er ly tightened .
- Never grease or oil the wheel bo lts and
the threads in the wheel h ubs. They can
become loose w hile driving if greased or
oiled, even if tightened to the specif ied
torque.
- Only use wheel bolts that belong to the rim being installed.
- Never use different whee ls bolts on your
vehicle.
- Always maintain the correct tighten ing
torq ue for the wheel bo lts to reduce the risk of a whee
l loss. If the tightening tor­
que of the wheel bolts is too low, they
can loosen and come out when the vehi­
cle is mov ing. If the tighte ning torque is
too high, the wheel bolts a nd threads
can be damaged and the whee l can be­
come loose.
([) Note
The specified torque for the whee l bolts is
90 ft lb (120 Nm) with a tolerance of± 7,4
ft lb(± 10 Nm). Torque whee l bolts diago­
nally. Afte r changing a whee l, the torque
must be checked as soon as possible wi th a
torque wrench -pre ferably by an au thor­
ized Audi dealer or qualified workshop .
Low aspect ratio tires
Your Audi is factory-equipped with low aspect
ratio tires. These tires have been thoro ughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and hand ling u nder a var iety of d riv ing condi ­
t ions . As k your author ized Audi dealer for
more details.
The low aspect ratio of these tires is ind icated
by a numeral of
55 or less in the tire's s ize
designation . The numeral rep resents the ratio
of the t ire's s idewa ll height in relation to its
t read width ex pressed in percentage. Conven­
tiona l tires have a he igh t/w idth rat io of 60 or
more.
The performanc e of low -a sp ec t-ratio tires i s
pa rticularly sensitive to improper inflation
pre ssure . It is therefore important that low
a spect ratio tires are inflated to the specified
pre ssure and th at the inflation pressure i s
regularly checked and maintained. Tire pre s­
s u res should be checked at least once a
month and always befo re a long trip
¢ page 251, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact w ith potholes, curbs, gull ies .,..

2 70 What do I do now ?
-Always store the vehicle tool kit, the jack
and the replaced t ire in the luggage com­
partment ¢
page 139.
@ Tips
Before changing the wheel, yo u m ust acti­
vate t he jac king mode, so t hat the auto­
mat ic cont rols fo r the Adaptive Air S us­
pens io n do not make it mo re diff ic u lt to
lift the vehicle with the jack
c.';> page 2 72.
Changing a wheel
When you change a wheel, follow these­
quence described below step-by-step and in
exactly that order .
1. Activate the vehicle jack mode
¢page 272.
2. Remove the decorative wheel cover* . For
more deta ils see also
¢ page 270, Deco­
rative wh eel covers
o r ¢ page 2 71 ,
Wheels with wheel bolt caps.
3 . Loosen the wheel bolts ¢ page 2 71.
4. Locate the proper mo unt ing po in t for the
j ack and align t he jack be low tha t poi nt
¢ page 272 or r::!>page 273.
5. Raise the car with the jack¢ page 272 or
¢page 273.
6. Remove the wheel with the flat tire and
then i nstall
the spare ¢page 274.
7. Tighten all wheel bolts ligh tly.
8 .
Lower th e ve hicle w it h the jack .
9 . Use the whee l bolt wren ch and
firmly
tig hte n al l whee l bolts ¢p age 271.
10. Rep lace the decorative wheel cover* .
11. D eactivate t he ve hicle jack mode in the
M MI :
!CARI function button > Car systems
control button > Se rvicing & checks > Air
susp.: jack mode
> Off .
The vehicle jac k mode sw itches off automati ­
cally at speeds above 10 km/h.
A WARNING
Always read and follow all WARNINGS and
informati on
¢ .&. in AB: Raising the vehicle
on page 272
and ¢page 275 .
After changing a wheel
A wheel change is not complete without the
doing the following .
.,. Always store the vehicle tool kit, the jack"
and the rep laced tire in the luggage com­
pa rtment
¢ page 139.
.,. Check the tire pressure on the spare whee l
immed iate ly afte r mounting i t.
.,. As soon as poss ible, h ave the
tightening
torques
on all whee l bolts che cked with a
torque wre nch. The correc t tig hten ing tor ­
que is 90 ft l b (120 Nm).
.,. Have the flat tire
replaced as s oon as possi­
ble.
@ Tips
- If you not ice that the w heel bo lts a re
co rroded and difficult to turn while
chang ing a tire, t hey shou ld be rep laced
before you check the tig htening to rque.
- Dr ive at reduced speed until you have the
t ightening torques checked.
- After changing a whee l, the t ire p ress ure
in all four tires must be chec ked/co rrect ­
ed and the tire p ress ure monito ring in di­
cator must b e sto red in th e MMI
¢ page 265.
' Decorative wheel covers
Applies to vehicles: w ith decorative whee l covers
The decorative wheel covers must be removed
first to access the wheel bolts.
Fig. 2 21 Cha ngin g a w hee l: Remov ing th e w heel cove r
Removing
.,. Insert the hook (prov ided w ith th e vehicle
t oo l ki t) in the hole in the whee l hub cover . ..,.

274 What do I do now ?
-Passengers must not rema in 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
raise the jack.
- Changes in temperature or load can af­
fect the height of the vehicle.
CD Note
D o not lift t he vehicle by the si ll. Position
the vehicle jack only at the designated lift­
ing points on the sill. Otherwise, your vehi­
cle will be damaged.
@ Tips
The vehicle jack mode switches off auto­ mat ica lly at speeds above
10 km/h.
Taking the wheel off/installing the spare
Follow these instructions step-by-step for
changing the wheel.
Fi g. 228 Changing a wheel: using the screwdrive r han­
dle (w ith t he blade r emoved) to turn the bo lts
F ig . 2 29 Changing a whee l: a lignmen t pin inside th e
top hole
After yo u have loosened all wheel bo lts and
raised the vehicle off the ground, remove and
replace the wheel as follows:
Removing the wheel
.,. Use the hexagonal soc ket in the scr ewdriv ­
er handle
to completely remove the top­
most whee l bolt and se t it aside on a
clean
surface r=> fig. 228 .
.,. Screw the threaded end of the alignme nt
pin from the tool kit hand-t ight into th e
empty bolt hole
Q fig. 229 .
.,. Then remove the other whee l bolts as de­
scribed above.
.,. Take off the whee l leaving the a lignment pin
in the bo lt ho le r=> 0 .
Putting on the spare wheel
.,. Lift the spare whee l and carefully s lide it
over the alignment p in to g uide it in place
Q0 .
.,. Use the hexagona l socket in th e screwdriver
ha ndle to screw in and tig hten all whee l
bolts
slightly.
.,. Remove the al ignment pin and insert and
tighten the remain ing wheel bolt slightly
like the rest .
.,. Turn the jack hand le counter-clockwise to
lower the vehicle until the jack is fully re­
leased .
.,. Use the wheel bo lt wrench to tighten all
wheel bo lts fi rm ly
r=> page 271 . Tighten
them
crosswise, from o ne bolt to the (ap­
p rox ima tely) opposi te one, to keep the
wheel ce nte red .
CD Note
When remov ing or i nsta lling the whee l,
the rim could hit t he b ra ke ro to r and d am­
age the ro tor. Wor k caref ully and have a
seco nd person hel p you.
(D Tips
Never use the hexagon al socke t in the han­
d le of t he screwdriver to loosen or tighten
the wheel bo lts .
Ill-

282 Emergency situations
@ Tips
-The discharged battery must be properly
connected to the vehicle's electrical sys­
tem. When jump starting or charging the
battery, never connect the negative
ground cable to the battery negative
post because the battery manager sys­
tem must be able to detect the battery's
state of charge . Always connect the neg­
ative ground cable to the negative
ground post of the battery manager con­
trol unit.
Use of jumper cables
Make sure to connect the jumper coble
clomps in exactly the order described below!
Fig . 235 Engine co mpartment: connecto rs fo r jump
star t cab les and c harg er
Fig. 236 Ju m p sta rt in g w it h the ba ttery of anot her ve ­
h icle :@ - booster battery, @-discharge d ve hicle bat­
tery
The procedure described below for connecting
jumper cables is intended to provide a jump
start for your vehicle.
Vehicle with discharged battery:
•Turnoff lights and accessories, move lever
of automatic transmission to N (Neutral) or
P (Park) and set parking brake.
Connect POSITIVE(+) to POSITIVE(+)
(red)
• Open the red cover on the pos itive terminal
¢ fig. 235 .
1. Connect one end of the red positive cable
on the
jump start bolt¢ fig. 236@ (bolt
under the red cover = "positive ") of the ve ­
hicle to be started @.
2. Connect the other end to the positive ter-
mina l@ of the booster battery@.
Connect NEGATIVE (-) to NEGATIVE (-)
(black)
3. Connect one end of the black negative ca­
ble to the negat ive terminal @ of the
booster battery @.
4. Connect the other end to the
jump start
pin © (bolts with hex head bolt= "nega­
tive") of the vehicle to be started @.
Starting the engine
• Start the engine of the veh icle w ith the
booster battery@. Run the engine at a
moderate speed.
• Start engine with discharged vehicle battery
@ in the usual manner.
• If the engine fails to start, do not keep the
starter cranking for longer than 10 seconds.
Wait for about 30 second s and then try
aga in.
• With engine running, remove jumper cables
from both vehicles in the exact
reverse o r­
de r.
• Close the red cover on the positive term inal.
T he battery is vented to the outside to prevent
gases from entering the veh icle inter ior. Make
sure that the jumper clamps are well connect­
ed with their metal parts in full contact with
the battery terminals.
_& WARNING
To avoid serious personal injury and dam­
age to the vehicle, heed all warnings and
instructions of the jumper cable manufac­
turer. If in doubt, call for road service.
- Jumper cables must be long enough so
that the veh icles do not touch.
-

290 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 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,

,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
------------------------------~I~ n~ d~ e~x~ 297
Checking
Engin e coolant leve l .... ... .. .. .. .. . 237
r ,re pressure . ... ...... ... .. .. .. .. . 25 1
Ch ild restra ints
Danger o f using ch ild restra ints in the
front seat .. .... .. .... ... .. .. .. ... 153
Where can I get additional information
about child restraints and their use? .. 193
Ch ild restra int system anchors . .. .. .. . 187
Ch ild sa fety .. ............. .... .. ... 174
Convertible locking retractor . . . . . . . . . 184
Guidance fixtures for lower anchorages 189
I mportant safety instructions fo r us ing
child safety seats ......... .. .. .. .. . 177
I mportan t th ings to know when dr iv ing
with chi ldren ... .. .... ... .. .. .. ... 174
Tether anchors
Tether straps
Ch ild safety loc k 191
191
Rear doors (mechan ic al ) ... .. .. .. .. .. 4 1
Rear doors (power) .... ... .. .. .. .. .. 41
Ch ild safety seat
Unused safety belts on the rea r seat . . 179
Ch ild safety seats .......... .... .. .. .
180
Booster seats . . . . . . . . . . . . . . . . . . . . . 182
Convertible ch ild seats ........... .. 181
Convertible locking retractor .. .. .. .. . 184
H ow do I properly install a child safety
seat in my vehicle? ........ .. .. .. .. . 177
I nfant seats . . . . . . . . . . . . . . . . . . . . . . 180
I ns tall ing .. ... .. ..... ... .. .. .. ... 184
Instal ling a chi ld restraint using the
L ATCH system ..... .... ... .. .. .. ... 190
LATCH system ............ .... .. .. . 190
Lower anchorages ........ .. .. .. .. .
Mounting and releasing the anchorage
hook
. . ' . ... ................... . '
188
190
Safety instructions . ..... .. .. .. .. .. . 177
Cleaning 214
Climate con trols . . . . . . . . . . . . . . . . . . . . . 78
Climate control system Supp lementary heater .......... .... . 81
Clock ..... .. .. .. .. .. .... ... .. .. .... 27
C losing
Panorami c sun roof ........ .. .. .. .. .. 44
Sliding/ tilting sun roof .. ... .. .. .. .. .. 43
Sun shade (panoramic sunroof) ... .. .. 45 Co
ld tire inflation pressure ..... ... .. .. 249
Coming home Compact spare tire 48
268
Compartments . . . . . . . . . . . . . . . . . . . . . . 7 4
Compass in the m irror .............. .. S6
Compliance ... .. .... . ... ...... ... .. 293
Consumer Information . . . . . . . . . . 141, 290
Consumption (fuel) ............. .... . 25
Contacting NHT5A
Controls Cleaning
Convenience key . .. ................. . 141
216 35
Starting the engine ................ . 83
Stopping the eng ine (START ENGIN E
STOP button) . . . . . . . . . . . . . . . . . . . . . . 83
Switching the ignition on ............ 83
Un locking and lock ing vehi cle .... .. .. . 35
Convertible child safety seats ....... .. 181
Convertib le locking retractor
Activating ... .... .. . .. .. ..... ... .. 186
Deactivating ..... .. . .. ... .... ... .. 186
Using to secure a child safety seat 1.84, 186
Coolant
refer to E ng ine coolant . ..... ... .. .. 236
Cooler ....... .. .... .......... ...... 76
Cleaning 217
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 76
Cooling mode (automat ic climate control) 79
Cruise contro l
Changing speed ..... .. ..... ... .. .. . 91
Presett ing your speed .......... .... . 91
Switching off .. .. .... .... ....... .. . 91
Switching on . .. .. ...... ........... . 90
( upholder . ... .... .. . .. .. ..... ... .. . 74
Cu rve light ........ .. ..... .......... 108
Cylinder management
refer to Cylinder on demand System . . . 25
Cylinder on demand System ... ... .. .. . 25
D
Data recorde r
Date d isp lay 196
27
Daytime runn ing lights . .. ..... ... .. .. . 46
Decla rat io n of compliance
Adaptive cruise cont rol .... ..... .. .. 293
A udi s ide ass ist .. .. ........... .... 293
•
•