2015 AUDI A6 engine oil

12 Instrum ent s and w arn ing /indic ato r light s
-Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself . Let the engine
cool off first until you can no longer see
o r hear steam or coo lant escaping.
@ Note
- Mounting additional lights or accessories
i n front of the a ir inlets reduces the cool­
i ng effect of the rad iator . At h igh outside
temperatures or high eng ine load, the
engine could overheat.
- The front spo iler has been designed to
proper ly distribute the cooling air when
t h e ve hicle is moving.
If the spoiler is
dam aged, th is co uld red uce the cooling
effect and the engine co uld then over­
heat . Ask your authorized Audi dea ler for
assistance .
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
If engine RP M drops be low 1,500, yo u should
downshift to the next lower gear. The red a rea
at the end of the sca le indicates maximum
perm iss ib le engine RPM after the break-in pe­
riod. Before reaching this area, move these­
lector lever to position D/S (Drive) or ease
your foot off the accelerator pedal.
(D Note
The tachometer needle should on ly br iefly
be in the red zone: you could damage your
engine! The beginn ing of the red zone var­
ies depending on the engine .
@ For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
Fuel gauge
The fuel gauge only works when the ignition is
on .
If the fuel level d rops below 2 . 6 ga llons (10 liters), the bottom LED turns red and the
indicator light
ll'J turns on r=> page 22. The
bottom LED blinks red when the fuel level is
very low.
T he possible range based on the current fuel
level is shown in tab@r=>
page 24, fig . 4 .
(D Note
Never run the tank completely dry. An ir ­
r egular supply of f uel can cause engine
misfiring and fuel could enter the ex ha ust
system . The catalytic converter could then
overheat and be damaged.
Warning/indicator Lights
Description
The ind icator lights in the instrument cluster
blink or turn on. They indicate funct ions or
malfunctions
r::!> ,& .
Messages may appear with some indicato r
lights. A warning signal will sound at the
same t ime. The indicator lights and messages
in the center of the displays may be rep laced
by other d isplays . To show them again, select
the tab for ind icator lights and messages us­
i ng the multifunction steering wheel
r::!> page 24. If t here are several malfunc­
t ions, you can display them one at a time us­
ing the thumbwheel.
Some indicato rs lights in the d isplay can turn
on in severa l co lors.
A WARNING
- F ailure to heed w arning l igh ts and other
important vehicle in forma tion may res ult
in ser io us personal inj ury or vehicle dam­
age .
- Whenever stalled or stopped for repair, move the vehicle a safe d istance off the
road, stop the engine, and turn on the
emergency flasher
r::!> page 44.
- The engine compartment of any motor
veh icle is a potentially hazardous area.
Before you chec k anything in the engine

M N
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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

14 Instruments and warning/indicator lights
Tire pressure monitoring sys­
tem./ ¢ page267
Tire pressure monitoring sys­
tem q page 267
Electronic power control./ (a l­
ternative to
1,1 )
qpage 20
Glow plug system
(alternat ive to
Ga)
qpage 21
Malfunction indicator Lamp
(MIL) ./
¢ page 21
Diesel particulate filter* clog­
ged
q page 21
Engine speed limitation
q page 21
Engine oil leve l
qpage 18
Engine oil sensor
qpage22
Battery
q page 17
Tank system q page 22
Windshield washer fluid level q page22
Windshield wipers
q page 22
/:
Headlight range control
q page22
adaptive light*
qpage22 Light-/rain sensor faulty
q page23
Audi active lane assist*
¢ page94
Transm ission
¢ page 112
Transm ission
¢ page 112
Transm ission
- S tronic
¢ page 112
Electronic steering column lock
q page 18
Engine start system
q page 18
Central indicator light
qpage 19
Electromechanical steering, dy ­
namic steering*./
q page 197
Ai r suspension*
¢page 18
Sport different ial*
¢ page 23
Refill Ad Blue*
q page 218
AdBlue ma lfunction*
q page 218
Remote control key
q page 74
Other indicator lights
y>))
Remote control key
q page
76
Battery in remote control key
q page 32
Defective light bulb warn ing
q page 22
Rear fog light(s)
q page22
,-------------
Turn signa ls
¢ page23
USA models: Cruise control*
¢ page82
Canada models: Cruise control*
q page82
Adaptive cruise control*
qpage86
Adaptive cruise control*
q page86

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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

18 Instruments and warning/indicator lights
level warning II. 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 oil immediately
c::>page224.
Ill Add oil, max. x qt (I). 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 224.
~ - Steering column lock
• Do not drive vehicle: Steering defective
If the indicator light turns on and the mes­
sage appears , there is an electronic steering
column lock malfunction. You cannot switch
the ignition on.
Do
not tow your vehicle because it cannot be
steered. Seek professional assistance.
Ill 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 malfunction .
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 risk of an accident .
©-Engine start system
• Engine start system fault. Please contact
dealer
If the indicator light turns on and the mes­
sage appears, do
not switch the ignition off
because you may not be able to switch it on
again.
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
ml Engine start system fault. Please contact
dealer
If the indicator light turns on and the mes­
sage appears, there is a malfunction in the en­
gine start system.
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
c:::::> Air suspension
Applies to vehicles: with air suspension
• Air suspension: system fault. Can contin­
ue slowly with max. 35 mph.
There is a malfunction that can result in re­
stricted driving stability .
Carefully drive a t a maximum speed of 35
mph (60 km/h) to your authorized Audi dealer
or qualified workshop to have the malfunction
corrected .
• Air suspension: service mode. Vehicle can
only be moved with restrictions
Carefully drive to your authorized Audi dealer
or qualified workshop immediately to have
the service mode deactivated.
II Air suspension fault
There is a system malfunction that can result
in restricted driving stability or reduced
ground clearance.
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
II Air suspension: vehicle too low. Ground
clearance reduced
The ground clearance is very low due to a sys­
tem malfunction . Wait until the air suspen ­
sion system has restored normal ground clear­ ance . Otherwise, conditions such as an uneven
road surface can lead to vehicle damage.

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.

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,...., ..,., ,....,
Starting the engine
"'Press the brake pedal c::> _&..
"'Pr ess the !START ENGINE STOPI button
c::> fig. 77. The engi ne will start.
"' It is possible that there will be a slight delay
when starting the engine for diesel vehicles
in colder temperatures. Therefore, you must
hold the brake pedal down until the engine
starts. The indicator lamp
Ii illuminates
when the engine is preheated.
If the engine should not start immedi ately,
the starting process is automatically stopped
after a short time . Repeat starting procedure.
Start-Stop-System*:
Note the information on c::> page 79, Start­
Stop-System.
A WARNING
- Never allow the engine to run in confined
spaces -danger of asphyxiation .
- 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.
-Avoid high engine rpm, full throttle and
heavy engine loads until the engine has
reached operating temperature - other­
wise you risk engine damage.
- The engine cannot be started by pushing
or towing the vehicle.
(D Tips
-After a cold engine is started, there may
be a brief period of increased noise be­
cause oil pressure must first build up in
the hydraulic valve adjusters. This is nor­ mal and not a cause for concern.
- If you leave the vehicle with the ignition
switched on, the ignition will switch off
On the road 75
after a certain period of time. Please
note that electrical equipment such as
exterior lights will switch 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 .
"'Press the
I STAR T ENGINE ST OP I button
c::> page 7 4, fig. 77.
Steering lock
The steer ing locks when you turn the engine
off using the
I STAR T ENGINE STOP I button
and open the driver's door. The locked steer­ ing helps prevent vehicle theft.
Emergency off
If necessary, the engine can be switched off
with the selector lever in the R or D/S posi ­
tion. The engine stops if you press the
I START ENGINE STOPI button at speeds below
6 mph (10 km/h).
A WARNING
-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.
- For safety reasons, you should always
park your vehicle with the selector lever
in P. Otherwise, the vehicle could inad­
vertently roll away.
- After the engine has been switched off,
the radiator fan can continue to run for
up to 10 minutes -even with the ignition
switched off.
It can also switch on again
after some time if the coolant tempera­
ture rises as the result of a heat buildup
.
or if the engine is hot and the engine .,..

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.