2015 AUDI S8 oil pressure

12 Instruments and warning/indicator lights
Some indicators lights in the disp lay can turn
on in several colors.
A WARNING
- Failure to heed warning lights and other
important vehicle information may result
in serious personal injury or vehicle dam­
age.
- Whenever stalled or stopped for repair,
move the vehicle a safe distance off the
road, stop the engine, and turn on the
emergency flasher
c::> page 47.
-The engine compartment of any motor
vehicle is a potentially hazardous area.
Before you check anything in the engine
compartment, stop the engine and let it
cool down. Always exercise extreme cau­
t ion when work ing under the hood
c::> page 228, Working in the engine
compartment
Overview
Some indicator lights turn on briefly to check
the function of that system when you switch
the ignition on. These systems are marked
with an,/ in the following tables . If one of
these ind icator lights does not turn on, there
is a malfunction in that system .
Red indicator lights
-------------
US A models :
Brake malfunction ./
c::>page 14
Canada models:
Brake malfunction ./
c::>page 14
USA models :
Electromechanical parking brake
c::>page 15
Canada models:
Electrome chanical parking brake
c::>page 15
Engine cool ing system
c::>page 15
Engine oil pressure
c::>page 17
Engine oil level
c::> page 17
Battery
c:>page 16
Engine stops whi le driving
c::> page 16
Safety belt
c::>page 17
Electromechan ical steering./
c::> page 201
Electronic steer ing column lock
c::> page 17
Engine start system
c::> page 17
USA models : Speed warning sys ­
tem
c::> page 90
Canada models: Speed warning
system
c::> page 90
Adaptive cruise control./
~page 94
Air suspension*
c::> page 18
Night vision ass istant*
c::> page 111
Night vision ass istant*
c::> page 111
Refill Ad Blue*
c::> page225
AdB lue malfunction*
c::> page 225
Yellow indicator lights
-------------US A models: Safety systems
c::>page 18
Canada models : Safety systems
c::> page 18
Electronic Stabilization Control
(ESC) ./
c::> page 18
Electronic Stabilization Control
(ESC) ./
c::> page 18 .,..

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ABS
(8)
"O~ I I ~ I.
Instruments and warning/indicator lights 13
USA models:
Anti-lock braking system (ABS) defective
q page 19
Canada models:
Anti-lock braking system (ABS)
defective
q page 19
Worn brake pads ¢page 20
Electromechanical parking brake
¢ page 15
Tir e pressure monitoring system
./
¢page 263
Tir e pressure monitoring system
qpage 263
Electronic power control (alter­
native to
1,1 )
qpage 20
Glow plug system
(alternat ive to
[lla}
¢ page 20
Ma lfunction indicator Lamp
(MIL)./
¢ page 20
Diesel particulate filter* clogged
q page 21
Engine speed limitation
q page 21
Engine oil leve l
¢ page 17
Engine oil sensor
¢ page 21
Request to warm engine by driv­
ing
¢ page 21
Battery
q page 16
Ta nk system
q page 21
Windshield washer flu id leve l
q page 22 W
indshield wipers
¢ page22
Remote control key
¢ page83
Remote control key
¢ page83
Battery in remote contro l key
¢ page 32
Defective light bulb warning
¢ page22
F og lights*
¢ page22
Rear fog lights*
¢ page 22
H eadlight range control
¢ page22
adaptive light*
¢ page22
Light-/rain sensor faulty
¢page22
Audi active lane assist*
¢ page 102
Transmission
¢ page 118
Transmission
¢ page 118
E lect ronic steer ing column lock
¢ page 17
Engine start system
¢ page 17
Brake booster
¢ page 18
Electromechanical steering,dy­
namic steering*./
¢ page201
Air suspension *
¢ page 18
Sport different ial*
¢ page23

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,...., ..,., ,....,
Instruments and warning/indicator lights 17
t Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The. warning/ind icator light illuminates
when the ignition is switched on to rem ind
the dr iver and any front passenger to put on
the safety belt. Add itionally, an acoustic warn­
ing (gong) will also sound.
For more Information
c:> page 143, ~ Safety
belt warning light .
~ Engine oil pressure malfunction
The red engine oil pressure warning symbol
requires immediate service or repair . Driving
with a low-oil-pressure indication is likely to
inflict severe damage to the engine.
• Switch off engine and check oil level
If the indicator light turns on and the mes­
sage appears, the oil pressure is too low.
.. Pull
off the road.
.. Stop the vehicle .
.. Turn
off the engine.
.. Check the engine oil level c:> page 233.
.,. If the engine oil level is too low, add engine
o il
c:> page 234. Make sure that the oil pres­
sure warning symbol. appears no longer
in the display before you start driving again.
.,. If the engine oil level is correct and the indi­
cator light still turns on, turn the engine
off
and do not continue driving. Seek professio­
nal assistance.
(D Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
1111 requires oil refill or workshop serv­
ice without delay. Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil level warning
Ill. By then,
your engine
may already have suffered serious dam­
age.
~~ Engine oil level
• WARNING: Please add oil immediately
If the indicator light and the driver message
appear, add engine oi l immediate ly
c:> page 231.
1111 Add oil, max. x qt (l). You may continue
driving
When the symbol and the driver message ap­
pear, add the amount of oil appearing in the
display at the next opportunity
c:> page 231.
@I-Steering column lock
• Do not drive vehicle: Steering defective
If the indicator light turns on and the mes­
sage appears, there is an electronic stee ring
column lock malfunction . You cannot switch
the ignition on .
Do not tow your vehicle because it cannot be
steered. Seek professiona l assistance .
1\1 Steering lock : system fault. Please con­
tact dealer
If the indicator light turns on and the mes­
sage appears, there is an electronic steering
column lock malfunct ion .
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
A WARNING
Your vehicle must not be towed in the
event of a malfunction in the electronic
steering column lock because it cannot be
steered due to the locked steering. If it is
towed with the steering locked, there is
the r isk of an accident.
©-Engine start system
• Engine start system fault . Please contact
dealer ..,.

the stored position as soon as you switch on
the ignition.
Starting and stopping
the engine
Starting the engine
This button switches on the ignition and
starts the engine .
Fig. 88 Cente r console: S TART ENGINE S TOP b utto n
Swi tc hin g the i gni tion on/off
• To switch the ignition on/off, press the
I START ENGINE STOPI button . Do not press
the brake pedal while doing this . D iesel
vehicles are preheated wh ile the ignition is
switched on.
St art in g the engine
• Press the brake pedal~,&. .
• Press the
!START E NGINE STOPI button
~ fig . 88 . The engine will start.
• It is possible that there w ill be a slight delay
when start ing the engine for diesel vehicles
in colder temperatures. Therefore, you must
hold the brake peda l down until the eng ine
starts. The indicator lamp
II illuminates
when the engine is preheated.
If the engine does not start immediately , the
starting process is automatica lly stopped af ­
ter a short time . Repeat starting procedure.
Start -Stop -System *:
Note the information on ¢ page 87, Start­
Stop-System.
On th e road 83
A WARNING
- Never allow the engine to run in confined
spaces -danger of asphyxiat ion.
- Never turn off the engine until the vehi­
cle has come to a complete stop.
- The brake booster and power steering
only work when the engine is running. If
the engine is off, you have to use more
force when steering or braking . Because
you cannot steer and brake as you usual­ ly would, this could lead to crashes and
serious injuries.
(D Note
- Avo id h igh engine rpm, full throttle and
heavy engine loads until the eng ine has
reached operating temperature -other­
w ise you risk engine damage .
- T he engine cannot be started by pushing
or towing the vehicle.
(0 Tips
- After a co ld eng ine is started, there may
be a brief period of inc reased no ise be­
cause oil pressure must first build up i n
the hydraulic valve adjusters. This is nor­
ma l and not a cause for conce rn.
- If you leave the veh icle with the ignition
switched on , the ign ition w ill switch off
after a certain period of time . Please
note that electrical equ ipment such as
exterior lights will sw itch off as well
when that happens.
Stopping the engine
• Bring your vehicle to a complete stop.
• Move the selector lever to the P or
N posi ­
tion.
• Pr ess the I START ENGINE STO P I button
¢ page 83 , fig. 88.
Steerin g lock
The steering locks when you turn the engine
off using the
I START ENGINE STOP I button
and open the d river's door. The locked steer-
ing helps prevent vehicle theft.
11-

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-Always disconnect the battery.
- Never smoke or work near heaters or open flames. Fluids in the engine com­
partment could start a fire.
- Keep an approved fire extinguisher im­
mediately available.
- To avoid electrical shock and personal in­
jury while the engine is running or being
started, never touch :
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair
with the engine running:
- First, fully apply the parking brake,
move selector lever to "P" (Park).
- Always use extreme caution to prevent
clothing, jewelry, or long hair from get­
ting caught in the radiator fan, V-belts
or other moving parts, or from contact­ ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine.
- Minimize exposure to emission and
chemical ha zards c:::> & .
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de­
fects and reproductive harm. In addition ,
certain fluids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm .
Checking and filling 229
-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 harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam­
age to vehicle systems will occur.
(® For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly . If
you see spots from oil or other vehicle flu­ ids, have your vehicle inspected by an au­
thorized Audi dealer.
Closing the engine hood
.,. Pull the hood down until the pressure from
the struts is reduced.
"'Let the hood
drop down and latch in place.
Do not try to push it shut; it may fail to en­
gage
c:::> ,A .
A WARNING
-
A hood that is not completely latched
could fly up and block your view while driv ­
ing .
- When you close the engine hood, check it
to make sure the safety catch has proper­ ly engaged. The hood should be flush
with the surrounding vehicle body parts.
- If you notice while driving that the hood
is not secured properly , stop at once and
close it. •
•

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Engine oil consumption
The e ngine in your vehicle dep ends on an ade ­
quate amount of oil to lubricate and cool all
of its m oving parts .
In order to provide effective l ubrication and
cooling of internal engine components, all in­
ternal combustion eng ines consume a certain
amo unt of o il. O il cons umption varies from
engine to eng ine and may c hange significant ly
over the li fe o f the eng ine . T yp ica lly, eng ines
with a specified break -in per io d (see
¢
page 205) cons ume more oi l during the
b reak-in period than they consume after oil
consumption has stabilized.
Unde r norma l conditions, the ra te of oil con ­
sumption depends on the quality and viscosity
of the oi l, the RPM (revo lutions per minute) at
which the eng ine is operated, the ambient
temperature and road condit ions. Further fac­
tors are t he amount of oil d ilution from wate r
condensation or fuel residue and the ox ida ­
t ion level of the o il. As any engine is subject to
wear as mileage bu ilds up, the o il consump­
tion may in crease over t ime un til re p la cement
of worn componen ts may become necessa ry.
W ith all these var iabl es com ing in to play, no
standa rd rate of o il cons umption can be es­
t a blishe d or specifie d. T he re is no a lterna tive
t o regular and freq uen t ch ecking of the oi l lev­
e l, see
Note .
If the ye llow eng ine o il level war ning symbol
in t he ins trumen t clus te r
II light s up, yo u
should che ck t he o il level as soon as possible
¢
page 233 or ¢ page 23 4. Top off t he oil at
your ea rliest convenience ¢
page 234.
A WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WAR NINGS
¢ .&. in Working in the engine
compartment on page 228.
Dr iving with an insufficient oi l level is like­
ly to ca use seve re damage to the eng ine.
-
Checkin g and fillin g
(D Tips
- The oil pressure warning display. is
not an indicator of the oil level. Do not
rely on it. Instead, check the oil level in
your engine at regular intervals, pref­
erably each time you refuel, and always
before going on a long trip .
-If you have the impressi on yo ur engi ne
cons umes excess ive amounts of oil, we
recommend that you consult your Aud i
dea le r to have the cause of your concer n
properly diagno sed . K eep in mi nd th at
t he a ccu rate meas urement o f oil con ­
sumption requi res g reat care and may
take some t ime . Your Audi dea le r h as i n­
struct io ns about how to measure oil con­
sumption acc urate ly.
Checking the engine oil level
App lies to vehicles : wit h oil level indicator
Fig. 201 D isp lay: o il leve l indicator
.,. Par k yo ur vehicle o n a level su rface.
.,. Shu t the eng ine off when it is warm.
.,. Switch on ly the ignition back on.
.,. Wa it app roximately two minutes .
.,. Select:
!CAR ! functio n button > Car systems
cont ro l button > Servicing & checks > Oil
level.
.,. Check t he oil level i n the display ¢ fig. 201.
Add eng ine o il if the bar of the oil leve l ind i­
cato r is nea r "m in"¢
page 234 .
Depending o n the way the vehicle is dr iven
and the ope rat ing cond it ions, o il cons umption
can be up to 1/2 quart per 600 miles (0 .5 liter
per 1,000 km). Consumption may b e hig he r
within the first 3, 000 miles (5 ,0 00 km). ..,,.
233
•
•

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Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 204 Eng ine compartme nt: cover o n the coolant
expansion tank
Before you check anything in the engine com­
partment,
a lway s read and he ed all WARN ­
INGS ¢ & in Working in the engine compart­
ment on page 228.
Park your vehicle on a level surface.
~ Switch off the ignition.
~ Read the engine coolant leve l from the cool­
ant expansion tank¢
fig. 204, ¢ page 230.
With a cold engine, the coolant level should
be between the "min" and "max" markings.
When the engine is warm, the level may be sl ightly above the ''max" marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration ¢
page 230 .
To obtain an accurate reading, the engine
must be switched off.
The expansio n tank in your vehicle is equipped
with an electric coolant level sensor.
When t he coo lant level is too low, the warning
light in the Auto-Check System¢
page 15 will
illuminate unti l yo u add coolant and the level
has been restored to normal. Even thoug h
there is an electric coolant level sensor, we
still recommend you check the coolant level
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool-
Checkin g and fillin g 237
ing system shou ld be inspected immediately
by your authorized Audi dealer . It is not
eno ugh merely to add coo lant .
In a
s ealed system, losses can occu r on ly if
the boiling point of the coo lant is exceeded as
a resu lt of overheating.
A WARNING
The cooling system is under pressure and
can get very hot. Red uce the risk of scald­
ing from hot coolant by follow ing these
steps.
- Turn off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping flu id a nd steam by cover ing the
cap with a la rge, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
p lyi ng lig ht, dow nward pressure on the
top of the cap.
- To avo id being burned, do not sp ill anti­
freeze o r coolan t on the exhaust system
or ho t engine parts. Und er certa in cond i­
tions, the ethylene gly co l in engine coo l­
an t can catch fire.
(D Note
Do not add any type of radiator leak sea l­
ant to your veh icle's engine coo lant. Add­
i ng radia to r repa ir flui d may adverse ly af­
fe ct the fun ct io n and perfor man ce o f you r
coo ling system and could result in damage
not cove red by your New Vehicle Limi ted
War ranty.
Adding coolant
Be very careful when adding engine coolant .
Before you che ck a nyt hing in the eng ine com­
partmen t,
alway s re ad and he ed alt WARN­
INGS ¢ & in Working in the engine compart­
ment on page 228.
~ Requirement: There must be a residua l
a mo unt of coolan t in the expansion ta nk
¢(D.
~Tu rnoff the engine . •
•

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 .,..