2015 AUDI A6 check oil

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Instrument s and warnin g/indic ator ligh ts 13
compartment, stop the engine and let it
cool down. Always exercise extreme cau­
t ion when working under the hood
c>page222.
Overview
Some ind icator lights turn on briefly to check
the function of that system when you switch
the ignition on. These systems are marked
w ith a,/ in the followi ng tables.
If one of
these indicator lights does no t turn on, there
is a malfunction in that system.
Red ind ic a tor l ights
-------------
U SA model s:
Brake malfunction ,/
c>page 15
Canada m odel s:
Brake malfunction ,/
c>page 15
USA models:
Electromechanical parking
brake
c>page 16
Canada m odel s:
Electromechanical parking
brake
c>page 16
Engine cooling system
c>page 16
Engine oil pressure
c>page 17
Engine oil level
c> page 18
Battery
c>page 17
Safety belt
c>page 17
Electromechanical steering,/
c>page 197
Electronic steering column lock
c>page 18
Engine start system
c>page 18
Central ind icator light
c> page 19
USA models: Speed warning
system
c> page 81
Canada mod els : Speed warning
system
c> page 81
Adaptive c ruise control*,/
c> page86
Air suspension*
c> page 18
Pedestrian warning*
c>page 103
Refill Ad Blue*
c> page 218
AdBlue malf unct ion*
c> page 218
Yellow indicator li ght s
"O~ I I \; ,,
-------------
USA models : Safety systems
c>page 19
Canada models : Safety sys­
tems
c> page 19
Electron ic Stabilization Control
(ESC) ./
c>page 19
Electronic Stabilization Control
(ESC) ,/
c>page 19
USA model s:
Anti-loc k braki ng system (ABS)
defect ive ,/
c>page 19
Canad a mod els :
Anti-lock braking system (ABS)
defect ive ,/
c>page 19
Worn brake pads
c>page20
Electromechanica l parking
brake
c>page 16

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Instruments and warning/indicator lights 17
-The engine compartment of any vehicle
is a dangerous area. Before you perform
any work in the engine compartment,
turn of the eng ine and allow it to cool.
Follow the warning stickers¢
page 222.
(D Note
Do not continue driving if the. symbo l
illuminates. There is a malfunct ion in the
eng ine cooling system -you could damage
your eng ine.
0 Battery
This warning/indicator light detects a mal­
function in the generator or in the vehicle's
electrical system.
The. warning/ind icator light illuminates
when you switch on the ignit ion and must go
out after the engine has started.
• Alternator fault: Battery is not being
charged
If the indicator light turns on and the mes­
sage appears, there is a malfunction in the
generator or vehicle e lectr ica l system .
Dr ive to your au thorized Audi dealer or quali ­
fied workshop immediately . Because the vehi ­
cle battery is discharging, turn
off all unnec­
essary electrical equipment such as the radio.
Seek professional ass istance if the battery
charge level is too low .
(•) Low battery: battery will be charged
while driving
If the indicator light turns on and the mes ­
sage appears , there may be limited starting
abi lity .
If this message turns off after a litt le wh ile,
the battery charged enough wh ile driving.
If the message does not turn off, have your
authorized Audi dealer or qua lified workshop
correct the mal func tion.
~ Safet y belts
This warning/indicator light reminds you to
put on your safety belt.
The . warning/ indicator light illum inates
when the ignition is switched on to remind
the driver and any front passenger to put on
the safety belt. Add it ionally, an acoustic warn­
ing (gong) wi ll also sound.
For more Information¢
page 136, i 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 oi l pressure is too low.
.,. Pull
off the road.
.,. Stop the vehicle.
.,. Turn
off the engine .
.,. Check the engine oil level c> page 226 .
.,. If the eng ine o il level is too low, add eng ine
oil ¢
page 226. Make sure that the oil pres­
sure warning symbol. appears no longer
in the display before you start dr iv ing again .
.,. If the eng ine o il level is correct and the indi­
cator light still turns on, turn the engine
off
and do not continue driving. Seek professio­
na l 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
II 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

22 Instruments and warning/indicator lights
If the engine speed limitation was activated
by an engine control malfunction , the indica­
tor light ~ also t urns on. Make sure that the
speed does not go above the speed displayed .
Drive to your authori zed Aud i dealer immedi­
ately to have t he malfunction corrected .
II Oil level! Sen sor defective
If the symbol illuminates, contact your au­
thor ized Audi dealer a nd have the o il sensor
i n spected . Until you have t his done , ch eck the
oil level each time you refuel just to be on the
safe side
c::> page 2 26 .
Bil Fuel level indicator
ID'J Plea se refuel
If the indicator light turns on fo r the fi rs t
time and the message app ears, ther e ar e
about 2.6 gallons (10 liters) of f ue l left in the
t an k. T ime to refue l
c::>page 216 .
Ill Tank system malfunction! Contact dealer
If the i ndicator light tu rns on and t his mes­
sage appears, t here is a ma lfunction in the
tank system .
Drive to yo ur autho rized Aud i dea ler immedi­
ately to have t he malfunction corrected.
~ Windshield washer fluid level
~ Please refill washer fluid
If the symbo l illuminates, add windshield
washer f luid to the washer system/headlight
washer system*
c::> page 235.
~• Windshield wipers
m Windshield wiper defective
There is a malfunct io n with the w indshield
wipers.
D rive to yo ur autho rize d Au di dea ler immedi ­
ate ly to have t he malfunction cor rected .
~/0$ Defective light bulb warning
S:j -If t he in dicato r light tu rn s on, a bu lb h as
f ailed. The message in dicates t he loca tio n of
t h e b ulb .
II-if a rea r fog lamp has fa iled , the ind icator
li gh t tur ns on to ind icate the loca tion on the
vehicle.
Vehicle lights : malfunction
If the message appears, there is a malfu nc­
t ion in the headlights o r light sw itch.
Drive to your authorized A udi dealer immedi ­
ate ly to have the ma lfunction corrected.
.&_ WARNING
- Light bulbs a re pr ess urized and could ex­
p lode w hile they are being changed ca us­
i n g s erio us pe rsonal injury .
- Wo rk with due care when han dling the
h igh-vo ltage sect io n o f gas disc harge
(xe non) ligh ts. Failur e to do so could re­
s ult in death or ser ious injury .
(D Tips
Have t he b ulb replaced or the co nnect ion
r epaired by y our auth orized A udi Se rvice
d epartment .
~{i) Headlight range control
II Headlight range control : defective!
If the symbol illuminates, the headlig ht range
control is no lo nger wor king properly . Have
t h e sys tem checked and repaired at yo ur Audi
d eal er.
:sO Adaptive Light
App lies to veh icles : w ith Adapt ive lig ht
r!J Audi adaptive light: sy stem fault
If the indicato r light turns on and this m es­
sage appears, there is a malf unct io n in th e
adaptive ligh t syste m. The head lig ht s s till
funct ion.

28 Instruments and warning /indicator lights
The schedule fo r the next oil change o r inspec ­
t ion is calculated automatically and d isplayed
according ly . T he display works in two stages :
Service reminder
30 days befo re the ne xt service is due, a serv­
i ce rem inder appears in the di splay when yo u
switch the ignit ion on
¢ fig . 13.
Afte r abo ut 5 seconds the display sw itches
b ack to normal. The di sta nce and time re­
maining a re update d eac h time the ignition is
switched on unt il the date due for service is
reac hed .
Service due
When the due date for service is reached , the
message
Service due! appears in the instr u­
men t clus ter immedia tely after you switch the
i gnition on. Additionally, a war ning tone
sounds . After about 5 seconds the display
switches back to normal.
Calling up the service schedules
If o r whe n an oil change o r inspect ion is due,
can be shown in the MM I disp lay by select ing
the service interva l disp lay in the car menu .
Select the
! CAR ! function b utton> (Ca r)* s ys­
tems
contro l button > Servicing & chec ks >
Service interval displays.
Resetting the service interval display
Your author ized A udi dealer w ill reset the cor ­
responding service sched ule after perform ing
the app rop riate serv ice on yo ur vehicle. Yo u
a ls o have the possibility to reset the oi l
change schedule after having performed an
oil change according to Audi specifications.
Selec t the
I CAR ! function button > (Car) * sys­
tems
cont ro l button > Servicing & checks >
Service Intervals > Re set oil change interval.
(D Note
- Only reset the o il change d isp lay when
you hav e compl eted an o il change .
- If you d isconnect t he battery te rm inals,
no calc ulations can be made for the serv­
i ce interv al display during this t ime and
n o servi ce re mi nder w ill appear . Reme m- ber th
at o bse rv ing the p roper service in ­
tervals is vita lly im po rtant to extend ing
the life of your vehicle, part icularly the
eng ine , and maintain ing its value. Eve n if
the mileage driven is low, the maxim um
p er iod of one year fro m one service to
t he next mus t not be e xceed ed .
@ Tips
The information in the Service Reminder
r ema ins sto red even when the vehicle bat ­
tery is disconnected.
Head -up Display
Applies to veh icles: w ith Head-up D isp lay
Fig. 14 Exa mple: in dic ato rs in th e Head -up D isplay
Fi g. 1 5 Ins trume nt panel: k nob for t he Head -u p D is ­
play
The Head -up D isplay projects cer tain warnings
o r se lected info rmation from the ass istance
syste ms* or na vigatio n* on t he windsh ie ld .
T he disp lay appe ars wi thin the drive r's field o f
vision .
Switching on/off
.,. Press the knob 1rl to switch t he Head-up
Display o n/off ¢
fig. 15.

196 Intellig ent technolog y
When you are driving at higher speeds with
the windshield wipers on, the brake pads will
briefly touch the brake d iscs in regular inter­
vals so as to improve reaction t ime when brak­
ing on wet surfaces. You the driver will not no­
tice anything .
The effectiveness of the brakes can be reduced
when the vehicle is dr iven on a salt-covered
road and the brakes are not used. Here too,
you should clean
off accumulated salt coat ing
from brake d iscs and pads with a few careful
applications of the brake¢.&. .
Cor ro sion
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
the discs if the car is not dr iven regularly or
only for short trips with l ittle use of the
brakes .
If the brakes are not used frequently, or if cor­ rosion has formed on the discs, it is advisable
to clean
off the pads and discs by braking
firm ly a few times from a mode rately high
speed ¢.& .
Faults in the brake system
If you should notice a sudden increase in
brake pedal travel, then one of the two brake
circu its may have failed¢.&. .
Low brake fluid le vel
Malfunct ions can occur in the brake system if
the brake fluid level is too low. The brake fluid
level is monitored electronically .
Brake boost er
The brake booster works with vacuum pres­
sure which is created only when the engine is
running ¢ .&. .
Brake lining w ear status
Brake lining wea r may be checked by vis ual in ­
spection of the condition of the brake pads
through the openings in the whee l. If neces­
sary, the whee l may be removed for this in ­
spection
¢ page 272, Changing a wheel.
_& WARNING
- You shou ld perform braking maneuvers
for the purpose of cleaning the brake
system only if road conditions permit .
Other road users must not be put at risk -
you may ca use an accident!
- Before descend ing a steep grade, reduce
speed and sh ift transmission into a lower
gear o r lower dr iving range. Do not ride
the br akes or ho ld the pedal down too
long o r too often . Th is could cause the
brakes to get hot and diminish braking
efficiency .
- Do not "ride the brakes" by resting your foot on the pedal when you do not intend
to brake. This may cause the brakes to
overheat, premature wear and increased
stopping distance.
- Under certain climatic and ope rat ing
conditions such as passing through wa­
ter , dr iving in heavy rain or after washing
the vehicle, the effectiveness of the b rakes can be reduced . In winte r, ice can
accumu late on the bra ke pads, lin ings,
d iscs and drum s. Carefully app ly bra kes
for a test. Brakes will dry and ice coa t­
ings wi ll be cleaned
off after a few care­
fu l brake applicat ions.
- Driving for an extended period of t ime on
salt -covered roads without using your
brakes can a lso affect braking efficiency .
Clean
off accum ulated salt coating from
brake discs and pads with a few careful
brake applications.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the a ir
f low to the front brakes is not obstruct­
ed. Otherwise the brake system could
overheat reducing the effective ness of
the entire brake system.
- Failure of one brake circuit will impa ir
the braking capab ility result ing in an in­
creased stopping distance . Avoid driving
the vehicle and have it to wed to the near­
est A udi dealer or qualif ied workshop .
- Never let the vehi cle roll to a s top with
the eng ine shut
off.

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Avoid damaging the
vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc., make certain that
low-lying parts such as spoilers and exhaust
system parts do not bottom out and get dam­
aged.
This is especially true for vehicles with low­
slung chassis (sports chassis) * and fully load­
ed veh icles.
Driving through water
on roads
Note the following to avoid vehicle damage
when driving through water, for example on
flooded roads:
- T he water must not be any h igher than the
bottom of the veh icle body.
- Do not d rive faster than wa lking speed.
..&, WARNING
After driving through wate r, m ud, slush,
etc., the brakes may be slow to take effect
because o f wet brake rotors and pads . Dry
the brakes first by braking carefully to re­
store the full braking effect.
(D Note
- Vehicle components such as the eng ine,
transmission, suspension or e lectrical
system can be severely damaged by driv­
ing thro ugh water.
- Always switch
off the Start-Stop-System
when driving through water¢
page 79 .
@ Tips
-Check the depth o f the wate r before driv ­
ing through it.
- Do not s top the veh icle, dr ive i n reverse
or switc h the engine off when driving
through water.
- Keep in mind that oncom ing vehicles
may create waves that raise the water
l eve l and make it too deep for you r vehi­
cle to drive through safely .
-
Dri vin g and en vironm ent 201
- Avo id driving through salt wate r because
it can cause corrosion .
Catalytic converter
Applies to vehicles: w ith gasoline engine
It is very important that your emission con­
trol system (catalytic converter) is function­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
... Always use lead-free gasoline ¢ page 214,
Fuel supply.
... Never run the tank down all the way to emp­
ty.
.,. Never put too much motor o il in your engine
¢ page 226, Adding engine oil~-
... Never try to push- or tow-sta rt your vehicle.
The catalytic converter is an efficient "clean­
up" dev ice bui lt into the exhaust system of
the ve hicle. The cata lytic conve rter bu rns
many of the pollutants in the exha ust gas be­
fore they are re leased into the atmosphere .
The exclusive use of unleaded fuel is c ritically
important for the life of the ca talyt ic convert­
er and proper f unct ion ing of the engine.
A WARNING
The temperature of the exhaust system is
high, both when driving and after s topping
the engine.
- Never touch the exhaust tail pipes once
they have become hot . This cou ld result
in burns .
- Do not park or operate the vehicle in
areas where the hot exha ust system may
come in contact with dry grass, brush,
fue l spill or other material which can
cause a fire.
- Do not apply additional undercoating or
rustproof ing on or near the exhaust
manifold, exhaust pipes, catalytic con­
verter or heat shields . Dur ing driv ing, the
substance used fo r undercoating could
overheat and cause a fire.
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@ Tips
The consumption estimates as published by ENVIRONMENTAL PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actual consumption on the
road, wh ich will vary depend ing upon vehi­
cle load and speed, road and weather con­
ditions, tr ip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
~ Avoid unnecessary accelerating and braking.
Vehicles use the most fuel when they are ac­
celerating . If you anticipate what is go ing to
h appen next, you will need to brake less and,
thus , accelerate less . Let the vehicle coast
wheneve r poss ible -fo r example when you see
that the nex t traffic light is red.
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage.
~ T ry and keep well below your car's max imum
speed.
Accelerating gent ly reduces fuel consump­
tion, engine wear, and does not disturb the
environment .
Fuel consumption, exhaust emissions and en­
g ine no ise increase d ispropo rtionately at high
speeds . If you dr ive at approximately three
quarters of top speed, fue l consumption will
be red uced by one ha lf. Never dr ive faste r
than the posted speed limit and wea ther con­
d itions permit.
Reducing unnecessary idling
E ven when your car is just idling it burns up
fuel .
~ Shut the engine off when you are not dr iv ing
the vehi cle.
Dri vin g and en vironm ent 203
~ Do not warm up the vehicle by lett ing the
engine run at id le .
T he id ling phase is au toma tic ally red uced for
vehicles with the Start -Stop -System . It is eff i­
cient to switch off the engine in vehicles with­
out the Start-Stop-System when stopp ed at
railroad crossings and long red lights. Turning
the engine off for jus t 30-40 seconds saves
more fuel than is burned by start ing the en-
. . gme again .
It takes a long t ime for the engine to warm up
fully when it is run ning at id le. However, wear
and noxious emissions are especia lly high
when the engine is warm ing up . So you should
dr ive away as soon as you start the engine and
avo id running at high rpms whi le the engine is
sti ll warming up.
(L} Note
Do not leave eng ine idling unattended af­
ter start ing .
If wa rni ng lights sho uld come
on to indicate improper ope ration, t hey
wo uld go unheeded . Extended idlin g also
produces heat, wh ich could res ult in ove r­
heating or other damage to the veh icle or
other p roperty .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel.
~ Have your ve hicle servi ced at reg ular i nter-
vals .
By havi ng your ve hicle regu la rly se rviced by an
Audi dealer he lps to ensu re tha t it ru ns prop­
erly and economically . The condition of your
vehicle not on ly affects its safety and ability to
ho ld its va lue, it a lso affects
fuel consump­
tion .
Check your oil e ach time you fill your tank.
T he amou nt of oi l used is re lated to engine
load and speed.
It is normal for the oil consumption of a new
engine to reac h its lowest value after a certa in
mileage has been d riven . .,..
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-Blend must contain not more than 15%
MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
espec ially we ll for winter or summer driving.
During seasonal change-over, we suggest that
you fill up at busy gas stat ions where the sea­
sonal adjustment is more likely to be made in
time .
(D Note
-Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo­
nents in the fuel system .
- Do not use fue ls that fail to meet the
specified criter ia in this chapter.
- If you are unable to determine whether
or not a particular fue l blend meets the
specifications, ask your service station or
its fuel supp lier.
- Do not use fuel for which the contents
cannot be identified.
- Fuel system damage and performance
problems resulting from the use of fuels
different from those specified are not
the responsibility of Audi and are not
covered under the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy
or driveability and performance prob­ l ems due to the use of one of these fuel
blends, we recommend that you switch
to unblended fuel.
Gasoline additives
A major concern among many auto manufac­
turers is carbon deposit build- up caused by
the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another , they have certain
things in common. All gasoline grades contain
substances that can cause deposits to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline brands include additives to keep engine and
Fuel supply and filling your fuel tank 215
fuel systems clean, they are not equally effec ­
tive .
A udi recommends using TOP TIER Detergent
Gasoline. For more info rmation on TOP TIER
Detergent Gasoline, please go to the official
website (www.toptiergas.com).
After an extended period of using inadeq uate
fuels, carbon deposit build-ups can rob your
engine of peak performance.
Q) Note
Damage or malfunction due to poor fue l
quality is not covered by the Aud i New Ve­
hicle Limited Warranty.
Diesel fuel
Applies to veh icles: w ith diese l eng ine
Always use ULSD (Ultra Low Sulfur Diesel)
No. 2. The ULS D No. 2 meets the ASTM D975.
D iesel fuel w ith concentrations of biodiese l
highe r than 5 % such as Bll, B2O or BlOO are
strictly prohib ited.
Serv ice stat ion fuel pumps are labeled with
the correct fuel informat ion for easy recogn i­
t ion by the user. If the diesel fuel pump is not
labeled ask the station operator what fuel is
being dispensed before filling up your vehicle.
ULSD No. 2 may not be available outside the
USA and Canada. Be sure to check before trav­
eling to other countries.
ULSD No. 2 can become thicker in very cold
temperatures, and this can impair the en­ gine's start ing and running. Depending on the
season, gas stat ions provide ULSD No. 2 that
flows better in cold temperatures so that you
can continue operating your vehicle as usua l.
(D Note
-Your vehicle's diesel engine was de­
signed soley for use with ULSD No. 2.
Th erefore, never use gasoline, heating
oil, other f uels or flow improvers . These
contain substances that wi ll severely
damage the fuel system and the engine. .,.
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