2010 AUDI S8 check engine light

Opening and closing
Switches for front door windows
@ operates the window in the drive r's door.
@ operates the w indow in the fro nt p assenge r's door .
Switches for rear windows
© operates the left rear wi ndow .
@ operates the rig ht rear window .
Safety switch
® Safety switch for rear window operat io n.
& WARNING
• Do not leave children unattended in the vehicle, espe cially with
ac cess to vehicle keys. Unsupervised u se of the keys can result in
starting of the engine and use of vehicle systems such as power
window s, et c. which could result in serious injury.
• Remember -you can still open or close the power windows for
about ten minutes after the ignition is swit ched off . Only when
either of the front doors are opened are the power windows
switched off.
• Be careful when closing the windows . Check to see that no one
is in the way, or seriou s injury could re sult!
• Always remove the ignition key whenever you leave your
vehicle .
• If you lock you r vehicle from the outside, no one, e specially
children, should remain in the vehicle .
• Do not stick anything on the windows or the windshield that
may interfere with the driver 's field of vision.
[I] Tips
• In add itio n to the switches in t he driver's door there is a separate
switch in each door for the powe r window in that door=>
page 55,
fig. 43.
• The driver can lower or ra ise the power side blinds* in the side
w indows by usin g sw itches © and @.•
Switches in the driver's door
T he driver can op erat e all windo ws.
If the respective sw itch is pus hed or pulled t he w indow w ill
open or c lose . Th e power win dow switches have a
two-posi­
tion function :
Opening the windows
-Pus h the switch to th e first stop and hold it there until the
wi ndow has lowered to t he desired positio n.
- Push th e switch briefly to the
second stop : th e wi ndow
wi ll automat ically o pen all the way.
Closing the windows
- Pu ll the switch up to the first stop and hold it there u nti l
the window has rise n to the desire d positio n.
- Pu ll th e sw itch q uickly to t he
second position: th e w indow
wi ll automat ically close a ll the way =:>
& in "Contro ls" o n
page 53.
Activating/deactivating rear windows
-Pus h the swit ch© =:> page 53, fig. 41 to the depr essed
p os it ion to activate the r ea r w indows -the lig ht in th e
switch will go out .
- Briefly press t he swi tch © to
deactivate the r ear win dow s
- th e sw itc h w ill re turn to t he safety posit ion and t he light
& wi ll illuminate . ..,.

Clear vision
Clear vision
Lights
Switching the headlights on and off ·"ti-·
In the "AUTO" position, a light sensor automatically
switches the head- and taillights on and off in response to light condi tions.
Fig . 48 In st rum ent
p ane l: light switch
Switching on automatic headlight control
- Tur n the lig ht sw itch to AUTO => fig. 48 .
Switching on the side marker Lights
-Turn the lig ht sw itch to ;oo~.
Switching on the headlights and high beam
- Tur n th e lig ht sw itch to fD.
- Push th e high beam leve r forward towards the instrument
panel =>
page 64.
Switching off the Lights
- Tur n the lig ht sw itch to 0.
The headligh ts only work when the ignition is switched on. Whi le
starting the engine or when switc hing off the ignition, the headlights
w ill go off and o nly the s ide mar ker lights will be on.
After start ing the eng ine, the xenon headlights are automatically
ad jus ted to the load an d ang le of the vehicle (for examp le, during
acceleration, braking). T his prevents oncom ing traff ic from experi­
encing unnecessary head ligh t glare from your xe non headlights .
If the system is not operat ing properly, a warning symbol in the Auto­
Check Control is displayed~
page 34.
With the side marker lights o r headligh ts swi tche d on, the symbol
next to the light switch i llum inates
oooc .
Daytime running lights
• USA model s: The daytime running lights will come on automati­
cally when the ign it ion is turned on and the light switch ~ fig . 48 is
in the
O position or the AUTO pos ition (only in daylight conditions).
T he
Daytime running lights f u nction can be turned on and off in the
M MI menu
Exterior lighting~ page 61 ~ /.1.
• Canada model s: The day time ru nning l igh ts wi ll come o n auto­
matically when the ignit ion is turned on and the light switch~ fig. 48
is in the
O position or the AUTO position (on ly in dayligh t conditions)
~ & -
Automatic headlight control
In the switch pos ition AUTO t h e automat ic headlight cont ro l is
tu rn ed on. The low beams are tu rned o n automa tically th rough a light
sensor as soon as ambient bright ness (e .g . when driving into a
tunnel) falls be low a val ue preset at the factory . When ambient
brigh tness increases again, the low beams are t urned off again auto­
matically ~
/.1.
In the AUTO pos ition t he low beams a re switched off automa tically
w hen the ign it ion is turned off. If the h igh beams were sw itched on,
th ey will come on again the nex t time the au tom atic headlight .,,_.

Clear vision
place before operating the wipers to prevent damage to the wiper
blade o r th e wiper motor.
• Do not use the wipers to clear a frosted window. Us ing the wipers
as a convenie nt ice scraper wi ll dest roy the w iper blades .
• Before you take your vehicle to an automatic car wash, make sure
you have the w ind shield wipe r sys tem sw itched off (lever in posi tion
0), otherw ise the windshie ld wiper system cou ld get damaged in the
car w ash if i t shou ld sudden ly come on.
[ i ] Tips
• Make s ure the washe r flu id reservoir in the eng ine compa rtment is
topped off before going on a long trip . Look up~
page 305 for
check ing and filling the washer conta iner.
• If you switch off the ignition with the w indshield wiper lever still
in the inte rval wipe posit io n and then come bac k a w hile la ter and
dr ive off, the rain sensor will reactivate itself afte r the ve hicle speed
has exceeded 4 mph (6 km/h).
• Worn or d irty windshield w iper blades cause smear ing which can
affect the operation o f the rain senso r. Check the cond it io n of your
w indshield wiper b lades regularly .•
Headlight washer system
The headlight washer system cleans the headlights.
- Operate the wi ndsh ield wip er/was her syst em ® with the
headlig hts turned on by hold ing the lever for lo nger than
one second=>
page 70, fig. 67 .
The washer je ts extend fo rwa rd o ut of the front bumper driven by
water pressure to spray the front headlights w ith water .
You should inspect the headlights regu larly (for example when refu­
eling) and clean off a ny solid dirt o r insects from the lenses. To ensure the system works properly in winter, keep the washer jets
free o
f snow and remove any ice using a de- ic ing spray. •
Service position
The wiper blades can only be changed in the service posi ­
tion.
- At below freezing outside temperatures, make sure first
that the wiper blades are not frozen to the windshield .
- Select: Function b utt on
I CAR ]> System s > Windshield
wipers .
- Select Serv ice position on t o tu rn th e service position on
or
off to return t he windsh ield w iper to its or ig inal pos i­
tion.
You must only attempt to change the wiper b lades when the service
position is act ivated. This way, when you are working on the wind­
shield wipe rs, you can avoid damaging the paint on the engine hood.
[ i ] Tips
• You can also turn on the se rvice position, for examp le, if you want
to protect the windshield from ic ing, using a cover .
• T he service position t urns itself
off , whenever yo u use the w ind­
shield wiper lever .•

On the road -
----------------
Electromechanical parking brake
Operation
The electromechanical parking brake replaces the hand
brake.
Fig. 135 Center
console: Parking brake
- Pull the switch to apply the parking brake~ fig. 135. The
indicator light in the switch will come on.
- Step on the brake pedal or the accelerator pedal and press
the switch at the same time to release the parking brake.
The indicator light in the switch will go out.
Your vehicle is equipped with an electromechanical parking brake
which replaces the handbrake. The parking brake is designed to
prevent the vehicle from rolling unintentionally.
In addition to the normal functions of a traditional hand brake, the
electromechanical parking brake provides various convenience and
safety functions.
Emergency brake
An emergency brake ensures that the vehicle can be slowed even if
the normal brakes fail~ page 125, "Emergency braking".
Controls and equip ­
ment Safety first
Indicator lights
•
If the parking brake is applied with the ignition turned on, the
indicator light in the instrument cluster (U.S. models:=.., Canadian
models: ©) and in the switch
«el) will come on.
• If the parking brake is applied with the ignition turned off, the
indicator light in the instrument cluster (U.S. models:=., Canadian
models: ©) and in the switch
«fl) will come on for about 30 seconds
and then go out.
& WARNING
If the vehicle is stationary and the transmission is engaged with
the engine running, the engine should not be speeded up (e.g.
manually from under the hood). Otherwise the vehicle will start to
move -you run the risk of an accident.
0 Note
If the warning/indicator light (U.S . models: BRAKE, Canadian models:
«I» ) flashes in the instrument cluster, there is a brake system
malfunction . By pressing the [CHECK! button, you can bring up a
driver message which explains the malfunction in more detail. If the
message
Parking brake ! Please contact workshop appears, there is
a parking brake malfunction which you should have repaired immedi­
ately by an authorized dealership~ page 28.
[ i] Tips
• You can apply the parking brake at any time -even with the igni­
tion turned off . The ignition must be turned on in order to release the
parking brake.
• Occasional noises when the parking brake is applied and released
are normal and are not a cause for concern.
• The parking brake goes through a self-test cycle at regular inter­
vals -when the vehicle is parked. Any associated noises are normal. •
Vehicle care Technical data

Intelligent technology
'-----------------------------------------------
until the car starts to move . The whee l less ab le to transfer power
spins .
Overheating of brakes
To prevent the disc b rake of the bra ked wheel from ove rhea ting if
subjected to excessive loads, the EDL cuts out temporarily . The
veh icle remains operat ional and beh aves in the same way as a vehicle
without EDL .
As soon as the brake has coo led down, EDL switches on again auto­
matically .
& WARNING
• When a ccelerating on slippery surfaces, such as on ice or snow,
alw ay s be careful when depre ssing the a ccelerator pedal. E ven
with the EDL working, the drive wheel s can spin and reduce your
ability to control your car . Risk of crash !
• The in creased safety afforded by EDL does not mean that you
can take safety ri sks. Always adapt your driving st yle to the road
condition s and traffic situation .
fi Tips
If a fault occurs i n the ABS, the EDL is also no t fu nct ion ing . This is
indicated by the ABS warning light~
page 19. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulati on System prevents the driven
wheels from spinning when the car is a ccel erating.
General notes
T he Anti-S lip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP). When the veh icle starts up and acceler­
ates , the wheels are p reve nted from sp inning by adjust ing the eng ine
powe r to match t he amo unt of grip avai lab le from the road s urface.
How the system works
ASR perfo rms au toma tica lly, i .e . witho ut the drive r's in tervent ion .
With the aid of the A BS sensors~
page 256, ASR monitors the speed
of the driven wheels . If the wheels start to spin, the engine powe r is
reduced automat ically u nti l the t ires find enough gr ip to lock onto
the road s urface. The system is active across the entire speed range.
Th e ASR wor ks in con ju nction with the A BS .
If a m alfu nction sho uld
occur in the ABS, the ASR w ill also be out of action.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety ri sks . Always adapt your driving style to the road
condit ions and traffic situation.
[ i ] Tips
To ensure that the ASR works prope rly, all four wheels must be fitted
w ith ident ic a l ti res Any differences in rollin g radius of the tires can
cause the system to reduce engine power when t his is not desired .
See also ~
page 318, "N ew t ires and replacing tires and whee ls" .•
Braking
General Information
What affects b raking efficiency ?
Operating cond itions and driving habits
Th e bra kes on t oday's automo biles are still subjec t to we ar,
depending large ly on operating conditions a nd driving habits~ &.
O n ve hicles tha t are eithe r driven mostly in stop- and-go city t raff ic or
are drive n hard, the brake pads should be checked by your author ized
Audi de aler more o ften than specified in the
Warranty & Mainte­
nance booklet .
Failure to have your brake pads i nspected can result
in re duced brake pe rformance. .,

lillill.a._...:I:..: n~ t .::.e::::..::.: ll~igent technology ,_ _______________________________________ _
Brake booster
The brake booster adds extra braking power.
The brake booster works with vacuum pressure which is created on ly
w hen the eng ine is ru nn ing =>& .
& WARNING
• Nev er let the vehicle roll to a stop w ith the engine shut off.
• If the brake booster is n ot working , for e xample when towing
your vehicle, or because the brake booster has som ehow been
damaged , the brake pedal must be pressed conside rably harder to
make up for the lack of booster assistan ce. •
Functioning of Anti-Lock Brake System
(ABS)
A BS prevents the wheels fr om locking up under braking.
The ABS co ntributes effectively to ve hicle contro l s i nee it preve nts the
w heels from
locking when the brakes a re applied. T his means that the
vehicle remains steerable and is less likely to skid .
With ABS you do not need to pump the brake. Just hold the brake
pedal down.
However, do not expect the A BS to shorten brak ing distance under all
circumstances. When driving on grave l o r on newly fa llen snow on top
of icy su rfaces, b raking distance may be even longer, therefore, under
these circumstances, it is especially important that you drive slowly
and w ith great care.
How the ABS system works
An automatic check is made w hen a speed of abo ut 4 mph (6 km/h) is
reached . When this happens, a pumping noise can be heard . If a
n ind iv idua l wheel begins to rotate too slow ly in relat ion to ve hicle
speed and tends to lo ck, the ABS automat ically redu ces bra ke pres ­
su re to p revent t hat wheel from lock ing.
Th is automatic adjustment process wi ll cause a
slight vib ration of
t he bra ke pedal and so me noises to al er t you tha t vehicle s peed mus t
be adapted to existing road and traff ic conditions.
& WARNING
Although the ABS is very effective, always remember that braking
capability is limited by tir e traction. Always adjust your driving
speed acco rding to the road and traffic conditions. Do not let the
extra safety afforded by the ABS tempt you into taking extra ri sks .
The ABS cannot ove rcome the laws of physics.
[I) Tips
• If ABS is not funct ioning properly, a warning light will come on.
See=>
page 19.
• If a fa ult occ urs in the ABS, the ED L is also not functioning . This is
ind icated by the A BS warn ing ligh t.•
Brake assistant
T he brake assistant is designed to achi eve the optimum
b ra king effect.
The b rake ass istant helps to i ncrease the effective brak ing power and
thus to achieve a shorter stopping distance. If the driver p resses the
bra ke pedal
very quickly, the brake assistan t automatically boosts t he
brak ing fo rce to the maximum level, up to the po int where the anti­
lo ck bra ke f un ct ion (ABS) intervenes to stop the whee ls from locking.
You shou ld then keep the brake pedal pressed unt il the ve hicle has
bra ked to t he required s peed . T he bra ke ass ist ant sw itches itse lf off
as soon as you re lease the brake pedal. ._

Driving and environment
(I] Tip s
The consumption estimates as pub lished by ENV IRONMENTAL
PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actual consumption on the road, which will vary
depending upon vehicle load and speed, road and weather conditions,
trip length, etc. •
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they are accelerating .
-Avo id unnecessary accelerating and braking.
Vehicles use the most fue l when they a re accele rating. If you antici­
pate what is going to happen next, you will need to brake less and,
thus, accelerate less. Let the vehicle coast whenever possible -for
example when you see that the next traffic l ight is red. •
Avoid full throttle
Driving at moderate speeds saves fuel and improves your
mileage.
- Try and keep well below your car's maximum speed .
Accelerating gently reduces fuel consumption, engine wear, and does
not disturb the environment.
Fuel consumption, exhaust emissions and engine noise increase
disproportionately at high speeds . If you drive at approx imately three
qua rters of top speed, fuel consumption will be reduced by one half.
Never drive faster than the posted speed limit and weather condi­
tions permit.
a Reducing unnecessary idling
Even when your car is just idling it burns up fuel.
-
Shut the engine off when yo u are not driving the vehicle.
- Do not warm up the vehic le by letting the eng ine run at
idle.
It makes sense to shut off the engine in traffic jams, when waiting for
trains to pass at rai lroad crossings, o r at traffic lights that have long
wa its on red . Turn ing the eng ine off for just 30-40 seconds saves
more fuel than is burned starting the engine again.
It takes a long t ime for the engine to warm up fully when it is running
at idle. Howeve r, wear and noxious emissions are espec ially high
when the eng ine is wa rm ing up. So you sho uld d rive away as soon as
you start the engine and avoid running at hig h rpms while the eng ine
is still warming up.
0 Note
Do not leave engine idling unattended after starting . If warning
lights should come on to indicate improper operation, they would go
unheeded. Extended idling also produces heat, which cou ld result in
overheat ing o r othe r damage to the vehicle or other p roperty. •
Regular maintenanc_e ____________ _
A badly tuned engine unnecessarily wastes a lot of fuel .
- Have your vehicle serviced at regular intervals .
By having yo ur vehicle regularly se rviced by an Audi dealer helps to
ensure that it runs properly and economically . T he condition of your
vehicle not only a ffects its safety and ability to ho ld its va lue, it a lso
affects
fu el con sumption .
Check your o il e ach tim e you fill you r tank.
~

Operating instructions
Maximum trailer weight
A trailer for your vehicle is limited to a typical class 1 or class 2 trailer.
Trailer load distribution
Be sure the load in the trailer is held securely in place to prevent it
from shifting forward, backward or sideways.
Never allow a passenger to ride in a trailer=>
& in "Driving instruc­
tions".
Engine cooling system
Towing a trailer makes the engine work harder. It is important that
the cooling system's performance is up to the additional load. Make
sure that the cooling system has enough fluid.
Tire pressure
When towing a trailer, inflate the tires of your vehicle to the cold tire
pressure listed under "Full load" on the label located either on the
driver's side B -pillar (visible when the door is open) or inside the fuel
filler flap. Inflate trailer tires to trailer and tire manufacturers' spec­
ifications .
Lights
The headlight settings should be checked with the trailer attached
before driving off. Check to make sure both vehicle and trailer lights
are working properly.
Safety chains
Be sure trailer safety chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to permit
turning corners . When you install safety chains, make sure they will
not drag on the road when you are driving.
The chains should cross under the trailer tongue to prevent it from
dropping in case of separation from the hitch .
Controls and equip­ ment Safety first Vehicle operation
Trailer
towingL_,1!:::!:·~-
0 Note
If you are going to tow a trailer, you must activate the trailer opera­
tion mode =>
page 179, "Towing a Trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration .
To obtain the best possible handling of vehicle and trailer,
please note the following:
- Do not tow a loaded trailer when your car itself is not
loaded.
- Be especially careful when passing other vehicles.
- Observe speed limits.
- Do not drive at the maximum permissible speed.
- Always apply brakes early .
- Monitor the temperature gauge.
Weight distribution
Towing a loaded trailer with an empty car results in a highly unstable
distribution of weight. If this cannot be avoided, drive at very low
speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that the
tow vehicle should be loaded to the extent possible and permissible,
while keeping the trailer as light as possible under the circumstances.
Whenever possible, transfer some cargo to the luggage compart­
ment of the tow vehicle while observing tongue load requirements
and vehicle loading considerations.
Vehicle care Do-it-yourself service Technical data