ECO mode AUDI S8 2008 Service Manual

Tires and wheels 11111 --------------------------------------------
•
Wheel bolts
Wheel bolts must al wa ys be tightened to the correc t
tor que .
The design of wheel bo lts is matched to the factory installed rims. If
di fferent r ims a re fitted, t he co rrect w heel bo lts wi th the rig ht len gth
and correct ly shaped bolt heads m ust be used. This ensures that
w he els a re fitt ed se cu rel y and that t he bra ke syste m functi on s
correctly.
In certa in ci rc ums ta nces, yo u may no t use wheel bo lts fr om a
differ ent vehicle - eve n if it is the sa me
model=:> page 382.
& WARNING
Improperly tightened or maintained wheel bolts can become loose
causing loss of control, a collision and serious personal injury.
• Always keep the wheel bolts and the threads in the wheel hubs
clean so the wheel bolts can turn easily and be properly tightened .
• Never grease or oil the wheel bolts and the threads in the wheel
hubs. They can become loose while driving if greased or oiled,
even if tightened to the specified torque .
• Only use wheel bolts that belong to the rim being installed .
• Never use different wheels bolts on your vehicle.
• Always maintain the correct tightening torque for the wheel
bolts to reduce the risk of a wheel loss .
If the tightening torque of
the wheel bolts is too low, they can loosen and come out when the
vehicle is moving . If the tightening torque is too high, the wheel
bolts and threads can be damaged and the wheel can become
loose .
0 Note
The specified torque for the wheel bo lts is 9 0 ft lb (12 0 N m) with a
t olerance o f± 7,4 ft lb(± 10 Nm). T orque whee l bolts diago nally.
After changing a whee l, the torque must be checked as soon as possible with a torque wrench
-preferably by an authorized Audi
dea ler o r qua lif ied wo rksho p.•
Low aspect ratio tires
You r Aud i is fact ory- eq uip pe d w it h lo w aspect rati o tire s. T hese tir es
hav e been thorough ly t ested and been se lect ed specifical ly for your
mod el for thei r supe rb pe rf or manc e, r oad f eel an d ha nd ling under
a variety of driving conditions. As k your authorized Audi d ealer for
m or e de tails.
The low aspect rat io o f th ese t ires is indicat ed by a nume ra l of 55 or
less in the tire's size designatio n. The numeral represents the ratio
o f t he tir e's s idewa ll he ig ht in r ela ti on to it s tread w idt h ex pressed
in percentage . Conventiona l tires have a height/width ratio of 60 or
more.
The performan ce of low -aspe ct-ratio tires is particularly sensitive to
improper inflation pressure . It is therefore important that low
aspect ratio tires are inflated to the specified pressure and that the
inflation pressure is regularly checked and maintained . Tire pres­
sures should be checked at least once a month and alway s before a
long
trip :::::, page 331, "Checking tire pressure" .
What you can do to avoid tire and rim damage L ow a spect ratio tires can be damaged mo re easily by impact with
pot ho les, cu rbs, gull ies o r ridge s o n th e road, part icular ly if th e tire
is underinf lated .
I n or der to mini mize th e occurren ce of i mpac t da mag e to the tires
of your vehicle, we recommend that you observe the fol lowing
pr ecaut ions :
• Alwa ys m aint ain recom mended inflatio n pressu res . C he ck you r
t ire p res su re eve ry 2,000 mi les (3, 000 k m) and add ai r if neces sary .
• D rive carefully on roads with potho les, deep gullies or ridges .
The impac t from d riving th rough or ove r such o bstacles can
da mage you r tir es . Imp act with a curb may a lso caus e damage to
your tire s. .,_
Vehicle care

-What do I do now? PW-------------------------
&, WARNING (continued)
front wheel is lifted off the ground, placing the Automatic Trans­
mission in
"P" (Park) will not prevent the vehicle from moving.
• Before you change a wheel, be sure the ground is level and firm.
If necessary, use a sturdy board under the jack.
• After installing the spare wheel, make sure that you replace the
flat tire/wheel in its storage area properly and tighten the knurled
retaining screw securely.
[ i] Tips
Before changing the wheel, you must activate the jacking mode, so
that the automatic controls for the Adaptive Air Suspension do not
make it more difficult to lift the vehicle with the
jack ~ page 7 88. •
Changing a wheel
When you change a wheel, follow the sequence described
below step-by-step and in exactly that order.
1. Activate the vehicle jacking mode => page 188.
2. Remove the decorative wheel cover*. For more details
see also
=> page 353, "Decorative wheel covers" or
=> page 353, "Wheels with wheel bolt caps" .
3. Loosen the wheel bolts => page 354.
4. Locate the proper mounting point for the jack and align
the jack below that
point=> page 354.
5. Lift the car with the jack=> page 354.
6. Remove the wheel with the flat tire and then install the
spare
=> page 356 .
7. Tighten all wheel bolts lightly. 8.
Lower the vehicle with the jack.
9. Use the wheel bolt wrench and firmly tighten all wheel
bolts
=> page 354.
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jacking mode => page 188 .
& WARNING
Always read and follow all WARNINGS and information ~ & in
"Raising the vehicle" on
page 354 and ~ page 357. •
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 on the spare wheel immediately
after mounting it.
-As soon as possible , have the tightening torques on all
wheel bolts checked with a torque wrench. The correct
tightening torque is 90 ft lb (120 Nm) .
-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 . .,_

_________________________________________________ F_ u_ s_ e_s _ a_n _d_ b_ u
_ lb_ s _ __.11111
[ i J Tips
You are well advised to keep a supply of spare fuses in your vehicle.
Fuses with the proper ampere ratings are available at your Audi
dealer. •
Fuse Location , Instrument Panel left
Fig . 293 Fuse panel
layout
Some of the equipment items listed are optional or only available on
certain model configurations.
Note that the following table is accurate at the time of going to
press and is subject to change. In the event of discrepancies, the
label on the inside of the cover always takes precedence.
The power windows and the power seats are protected by circuit
breakers, which automatically reset after a few seconds after the
overload -for example if a window is frozen -has been remedied.
No. Equipment
1 Garage door opener (Homelinkl 5
2
Parking assist system 5
3
Parking assist system 5
4
Headlight range control/light control device 10
No.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Equipment Amps
Instrument cluster 5
Steering column electronics system control 10
Diagnostic connector 5
Diagnostic connector/oil level sensor 5
ESP control unit/steering angle sensor 5
Instrument cluster 5
Audi lane assist 10
Brake light switch 5
Telephone/cell phone 10
Vacant
Access/start control module
5
RSE system 10
Adaptive Cruise Control 5
Heated washer jets 5
Vacant
Tire pressure mon itoring system
5
Vacant
Brake light switch
5
Cell phone preparation 5
Horn 15
Windshield wiper system 40
Vacant Electronic Stabilization Program (ESP)
25
Vacant
Switch illumination
1
Vehicle care Do-it-yourself service irechnical data

111!1....__F_ u_ s_ e_s _ a_n _ d_ b_ u_lb _ s _______________________________________________ _
No. Equipm ent
30 Vacant
31
32
33
34
35
36
37
38
39
40
On board power supply, light control (right headlight)
Vacant L eft rear footwell heater
Vacant
Vacant
Audi side assist Cooler
Onboard power supply, light control (left head­ light)
Door control unit, driver 's side
Power ste ering column adjustment
41 Door control unit, rear left
Amps
30
25
5
15
30
7.5
25
7.5
25 42 Access/start control module
43 Adaptive Light, left ______ _,., __
--44 Adaptive Light, right 10 10
.
•
Fuse Location
, Instrument Panel right
Fig. 29 4 Fuse pa nel
lay ou t
Some of the equipment items listed are optional or only available on
certain model configurations.
Not e th at th e follo wing t able is acc urate at th e tim e o f going to
pr ess and is s ubject t o c hange . In th e event o f di screp ancies, the
la bel on the in side of the cov er a lways ta k es prece de nce.
The power window regulators and the power seats are protected by
cir cuit br eak ers, which automatically reset after a few seconds after
the over load -for example if a window is frozen - has been reme­
died .
No. Equipm ent
1 Parking brake
2
3
4
5
6
7
Air conditioning Shi ft gate
Vacant
Engine control
Oxygen senso r before the three-way
catalytic converter
Oxygen sensor behind the three-way
catalytic converter
Amp s
5
10
5
15
15
15
-

____ E_m _ e_r-=g =- e_ n_c ..: y,_ s_ i_ t _u _a_ t_ i_ o _ n_ s ______________________________________________ _
4. Connect the other end to the negative ground post of the
battery manager control unit located next to the battery.
Starting the engine
-Start the engine of the vehicle with 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
seconds and then try again.
- With engine running, remove jumper cables from both vehicles in the exact
reverse order.
The battery is vented to the outside to prevent gases from entering
the vehicle interior . Make sure that the jumper clamps are well
connected with their metal ports in full contact with the battery
terminals.
& WARNING
To avoid serious personal injury and damage to the vehicle, heed all warnings and instructions of the jumper cable manufacturer. If
in doubt, call for road service.
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables, make sure that they cannot
get caught in any moving parts in the engine compartment.
• Before you check anything in the engine compartment, always
read and heed all
WARNINGS ~ page 299, "Engine compartment".
0 Note
Improper hook -up of jumper cables can ruin the generator. •
Always connect POSITIVE(+) to POSITIVE(+), and NEGATIVE(-) to
NEGATIVE( -) ground post of the battery manager control unit.
• Check that all screw plugs on the battery cells are screwed in
firmly. If not, tighten plugs prior to connecting clamp on negative
battery terminal.
• Please note that the procedure for connecting a jumper cable as
described above applies specifically to the case of your vehicle
being jump started. When you are giving a jump start to another
vehicle, do not connect the negative(-) cable to the negative(-)
terminal on the discharged
battery @~ page 365, fig. 297. Instead,
securely connect the negative(-) cable to either a solid metal
component that is firmly bolted to the engine block or to the engine
block itself. If the battery that is being charged does not vent to the
outside, escaping battery gas could ignite and explode! •
Emergency towing with commercial
tow truck
General hints
Your Audi requires special handling for towing.
The following information is to be used by commercial tow truck
operators who know how to operate their equipment safely.
• Never tow your Audi, towing will cause damage to the engine
and transmission.
• Never wrap the safety chains or winch cables around the brake
lines.
• To prevent unnecessary damage, your Audi must be transported
with a flat bed truck.
• To load the vehicle on to the flat bed, use the towing loop found
in the vehicle tools and attach to the front or rear anchorage
~ page 367 and ~ page 368 . .,,_

___ C_ o_n_ s_ u_m _ e_ r_ ln_ f_
o _r _m _ a_ t_ i_o _n ______________________________________________ _
Consumer Information
Warranty coverages
Yo ur Au di i s cov ered b y the foll owing war ra ntie s:
• New Vehicle Limited Warranty
• Limited Warranty Against Corrosion Perforation
• Emissions Control System Warranty
• Emissions Performance Warranty
• California Emissions Control Warranty (USA vehicles only)
• California Emissions Performance Warranty (USA vehicles only)
Detailed information rega rding your warrant ies can be found in
your
W arr anty & Maint enan ce booklet .•
Operating your vehicle outside the
U.S.A. or Canada
Government regu lations in the United States and Canada require
t hat auto mobiles meet specif ic em ission regulations and safety
standards . Therefore, vehic les bui lt for the U .S .A . and Canada differ
from vehicles sold in ot her countries .
If you plan to take your vehic le outside the continental limits of the
United States or Canada, there is the possibi lity that
• unleaded fue ls for vehicles w ith cata lyt ic converter may not be
available;
• f uel m ay have a considerably lower octane rat ing . Improper fuel
may cause engine damage;
• service may be inadequate due to lack of proper service fac ilities,
tools or testing equipment;
• replacement parts may not be readi ly avai lable . •
Navigation systems for vehicles built for the U.S.A . and Canada
wil l not necessarily work in Europe, and may not work in other coun ­
tries outs ide North Amer ica.
0 Note
Aud i cann ot be responsible for mec hanica l damage that could
result from inadequate fuel, service or parts avai lability .•
Audi Service Repair Manuals and
Literature
Audi Officia l Factory Service Manuals ar e pub lished as soon as
possible after model introduction . Service manua ls a re availab le
from :
Audi Technical Literature Ordering Center
Call tol l-free:
Tel. : 1 (800) 544-802 1
(from 8 :00 AM to 8 :00 PM, EST, Monday through Friday)
or access their webs ite
www .audi .dd sltd .com on the Internet to
order repair manua ls and ot her Audi literature .•
Maintenance
General
You r ve hicle has been des igned to help keep mainte nance requ ire ­
ments to a minimum. However, a certain amount of regu lar mainte ­
n ance is sti ll necessary to assure yo ur veh ic le's safety, economy and
.,,.

Alphab eti ca l ind ex I'll
----------------------------------------- -'---------
Climate controls ............. .... ... 114
Air distribution ... .... .... .... .... 120
Air outlets ..... .. .... .... .... .... 122
Air outlets (rear) .... ... .... .... ... 122
Air recirculation .. .... .... ... .... . 121
AUTO (standard setting) ...... .... . 117
Basic se ttings ... .. .... ... .... .... 1 26
Cen ter ai r vent . ....... ... .... .... 127
Contro ls ... .. .... .... ... .... .... 116
Defrosting/defogging ..... ... .... . 120
Description ... .... ....... .... .... 114
ECON operation .. .... .... ... .... . 126
Fan . .... .... .... .... .... ... .... . 120
Heated seats , front ... .... .... .... 118
in the rear ...... .... .... .... .... . 125
Key coded setting ... .... .... .... . 114
Rear c limate controls .... .... .... . 125
Rear seat operation .. .... .... .... . 127
Rec ircu lation mode (automatic) ... .. 126
Rec ommended set tin gs ...... .... . 11 4
Residual heat .. ...... .... .. . .... . 117
Set ting t he tempe rature ..... . .... . 117
SETUP . ......... .... .... ... .... . 126
Solar blower fan/solar roof .. ...... . 123
Solar operation ... ....... .... .... 127
Switching on and off .. .... ...... .. 117
Synchroni zation .. .... .... ... .... . 127
Using climate contro l economical ly . 123
Windshield defogger/defroster . .... 123
Clock . ...... .... .... .... ... .... .... . 13
Closing Power sunroo f .... .... ... .... .... . 66
Coat hooks . ... .... .... .... .... .... . 112
Co ld ti re inflati on pressure .. ...... ... 328
Controls and equip­
ment Safety first
Compartments in the door trim panels
. 111
Co mpar tmen ts in the rea r do ors ... .. .. 111
Consumer Information ... .... .... 207 , 380
Contacting N HTSA .. .. .. .... .... .... 207
Conven ie nce open featu re
Win dows ..... ... .... .... .... .... . 64
Convertib le chi ld safe ty seat .... .... .. 249
How do I properly ins ta ll a convertib le
child safety seat in my vehic le? . ... 249
Safety instructions . .... .... ....... 249
Convertible lock ing retractor
Act ivating .. ...... .... .... .... ... 255
Dea ctivati ng .. ... ... .... .... .... . 256
Using to secure a chi ld safety seat . 253,
255
Coo lant
See Engine coo lant
Cr uise control
3 14
Cha nging speed ...... .... .... .... 138
Presett ing your speed ... .. .... .... 138
Switching off .... .... .... .... .... 138
Switching on . .... .... .... ....... 137
Warning/indicator lights .. .... .... .. 21
See also Adaptive Cruis e Con trol .. .. 139
Cr uis ing ra nge . ...... .... .... .... ... . 38
Cupholder .. .. .. ...... ....... .... .. 105
Center conso le .. .. .... ..... .. .... 108
D
Damping
See Adaptive Air Suspension .. ..... 185
Data .... .... .... ... .... .... .... .... 378 Data recorder
....... .... ....... .... . 268
Date d isplay ...... .... ... .... .... .... 1 3
Daytime running lights ... .... .... .. 69, 70
def What does this mean when it appears in the trip odomete r disp lay? ... .. .... 14
Defective light bu lb warning .... .... ... 26
Defrosting/defogg ing the windows . ... 120
Defrosting/defogging windows .. ..... . 122
Determining correct load limit .... .... . 33 4
Digita l clock .. ...... .... .... .... .. . .. 13
Digita l speedometer . .... .... .... ... .. 25
Dimensions ...... .... ... .... .... ... 376
Dipstick Readi ng the dipstick proper ly .. ... . 311
Distance control system
See Adaptive Cruise Contro l ... .. ... 139
Doors Mechanica l chi ld safety lock .. ...... . 58
Power child safety lock . .... .... .... 58
P ower side door closer . ... .... .... . 53
Dr iver
See Seating posi tion ...... .... .... 200
Driver information display Driver information messages ... ... .. 29
Introduct ion .. ... .... .... .... .... . 24
Open door o r rear lid wa rn ing .. .... . 26
Outs ide temperature display .. ...... 25
Sound system disp lay ........ ... .. . 25
Driver Information System Digita l speedometer ... ... .... .... . 25
Driver 's seat .. .... .... ... .... .... .... 87
Vehicle operation Vehicle care Do-it-yourself service Technical data