2015 AUDI A6 engine

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Instruments and warning/indicator lights 15
Adaptive cruise contro l*
Q page 86
Audi act ive lane assist*
qpage 94
Sta rt-Stop-System*
¢page 79
Sta rt-Stop-System*
¢page 79
High beam
qpage45
BRAKE /(0) Brake system
The light illuminates when the ignition is
switched on.
It goes ou t after the engine has
been started. This indicates that the brake
warning light is functioning properly.
If the brake warning light does not light up
when the engine is cranking, there may be a
malfunction in the electrical system. In this
case , contact your Audi dealer.
If the brake system warning/ind icator light
turns on, there is a brake system mal function.
• (USA models ). (Canada models ) Stop
vehicle and check brake fluid level
If the indicator light turns on and the mes­
sage appears, p roceed as follows:
~ Pull off the road.
~ Stop the vehicle.
~ Turnoff the engine .
~ Check the brake fluid level q page 231 .
~ Contact your nearest authorized repa ir fa-
c ili ty if necessary.
Warning! Fault in brake system . Contact
dealer
If the ABS indicator light rJE (USA models)/
ii] (Canada models), the ESC indicator light
G1 and the brake system indicator light
• (USA models)/ . (Canada models) turn
on and the message appears, the ABS, ESC
and b raking dist ribution are not working
Q _& .
Carefully drive to your authorized Audi dealer
immediately to have the malfunction correct­
ed
Q ,& .
• (USA models) . (Canada models) Park­
ing brake: system fault! Please contact deal­
er
- If the ind icator light and the message ap­
pear
when stationary or after switching the
ignition on,
check if you can release the
parking brake. After releasing the parking
brake, carefully drive to your authorized
Audi dea ler immediately to have the ma l­
function corrected. If you cannot release the parking brake, seek professional assistance.
- If the ind icator light and the message ap ­
pear
while driving , the emergency brak ing
function may not be available. It may not be possible to set the park ing b rake or release
it once it has been set . Seek profess ional as­
sistance .
(USA models): If the warn ing light . and the
warning light
liJ appea r together, immedi ­
ately contact your authorized Aud i dealer or
qualified workshop to have all brake pads in­
spected
¢ page 20.
When the light comes on, an aud ible warning
s ignal is also g iven .
A WARNING
-Always observe the warn ings in
q page 222, before opening the hood
and checking the brake fluid.
- Driving with low brake fluid is a safety
ha zard . Stop the car and get professional
assistance.
- If the. (USA models). (Canada
models) brake system indicat or light
turns on together with the ABS and ESC
indicator lights, the ABS/ESC regulating
function may have failed. Functions that
stabilize the vehicle are no longer avai la­
ble. This could cause the vehicle to
swerve and increase the risk of slid ing .
Drive carefully to the nearest authorized
Aud i dealer or other qualified workshop
and have the malfunction corrected. ..,.

16 Instrum ent s and w arn ing /indic ato r light s
-If the brake warning/indicator light does
not go out after a few seconds and the
park ing brake is released, or lights up
wh ile you are driving, the fluid level in
the brake fluid reservoir is too low .
If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
authori zed Aud i dealer o r qualified repa ir
f acili ty and have the brake system in­
spected.
- Always keep in m ind that after several
brake applicat ions, yo u will need greater
pressure on the brake peda l to stop your
vehicle. Do not re ly on strained brakes to
respond with maxim um stopp ing power
in critical situations. You must allow for
increased brak ing distances . The extra
distance used up by fad ing brakes could
lead to an acc ident.
PARK/( ®) Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake.
If the indicator light . (USA models)/ .
(Canada models) turns on, the park ing brake
was set .
• (U SA models) • (Canada models ) Cau­
tion: Vehicle pa rked too steep
If the indicator light blinks and the message
appears, there is not eno ugh braking power to
keep the vehicle from ro lling . The brakes have
overheated. The vehicle could ro ll away even
on a small incline.
P res s brake pedal to relea se parking brake
To release the parking bra ke, press t he b ra ke
pedal and press the button~ or start d riving
with start ing assist at the same time
c::> page 78.
Plea se release parking brake
To release the parking brake ma nually, press
the brake pedal and press the button~ at the
same time . T he parking brake on ly re leases
automatically if the dr iver's safety be lt is fas­
tened.
Ill Parking brak e!
If the Ill ind icator light tu rns o n and this
message appears , the re is a parking b rake
malfunction . Drive to your au thorized A udi
dealer or qualif ied workshop immediately to
have the malfunction corrected .
-L Engine cooling system malfunction
A malfunction in th e engine cooling system
must be repaired as soon as possible.
• Swit ch off engin e and check coolant level
If the indicator light turns on and the mes­
sage appea rs, the coolant temperature is too
high o r the coolant leve l is too low.
.. Pull
off the road .
.. Stop the vehicle .
.. Tu rn
off the engi ne .
.,. Check coolant level
c::> page 228 .
.. Add coo lant if necessary c::> page 229 .
.,. Con tinue dr iv ing on ly afte r the engine coo l­
ant warning/indicator light goes out .
.. Contact your authorized A udi dealer for as-
sistance if necessary.
If the engine coo lant level is correct, then the
radiator fan may be the ca use of the malfunc­
tion .
• Coolant temperature too high! Plea se let
engin e run with vehicl e st ationary
If the indicator light turns on and the mes­
sage appea rs, let the engine run at id le for a
f ew m inutes to cool down.
A WARNING
- If your vehicle should break down for
mechanical or other reaso ns, park at a
safe distance from mov ing traffic, turn
off the eng ine and turn on the hazard
warn ing lights
c::> page 44, Emergency
flasher .
-
-Never open the hood if you see or hear
steam or coo lant escaping from the en­
g in e compartment -you r isk being scald­
ed. Wait unt il you can no lo nger see or
hear steam o r coolant escap ing .
~

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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.

20 Instruments and warning/indicator lights
The brake system will still respond even
without the assistance of the ABS system.
See your authorized Audi dealer as soon as
possible to restore full braking performance.
For more information regarding the ABS
c;,page 193.
Malfunction in the brake system
If the brake warning light c;,page 15 and the
ABS warning illuminate
together there may be
a malfunction in the ABS, and there may also be a malfunction in the brake system itself
c;, &. . The ABS will not work and you will no­
tice a change in braking response and per­
formance.
In the event of a malfunction in the brake
system
the warning/indicator light . (USA
models)/ . (Canada models) in the instru­
ment cluster flashes ¢
page 15.
Malfunction in the electronic differential
lock (EDL)
The EDL works together with the ABS. The
ABS warning light will come on if there is a
malfunction in the EDL system¢
page 193.
See your authorized Audi dealer as soon as
possible.
A WARNING
- If the f;t11 (USA models);tlJ (Canada
models) warning light does not go out,
or if it comes on while driving, the ABS
system is not working properly. The vehi­
cle can then be stopped only with the
standard brakes (without ABS). You will
not have the protection ABS provides .
Contact your Audi dealer as soon as pos­
sible.
- USA models: If the . warning light, the
fjJ warning light and the f;t11 warning
light come on together, the rear wheels
could lock up first under hard braking.
Rear wheel lock-up can cause loss of ve­
hicle control and an accident. Have your
vehicle repaired immediately by your au-
l ) . : USA mode ls o nly
thorized Audi dealer or a qualified work­
shop. Drive slowly and avoid sudden,
hard brake applications.
- Canada models: If the brake warning
light ., the
B.1 warning light and the
ABS warning light
ti] come on together,
the rear wheels could lock up first under
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acci­
dent. Have your vehicle repaired immedi­
ately by your authorized Audi dealer or a
qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
(0} Worn brake pads
Ill Brake pads!
If the warning light illuminates, immediately
contact your authorized Audi dealer or quali­
fied workshop to have all brake pads inspect­
ed. On USA models the warning light
Ill
comes on together with the warning light •.
Both sets of brake pads on an axle must al­
ways be replaced at the same time.
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
Ill and the warning
light •
1
) with the message Brake pads!
comes on in the instrument cluster dis­
play, immediately contact your author­
ized Audi dealer or qualified workshop to
have all brake pads checked or replaced if
necessary.
EPC Electronic power control
Applies to veh icles: w ith gasoline engine
This warning/indicator light monitors the
electronic power control.
The l3i warning/indicator light (Electronic
Power Control) illuminates when you switch
-
the ignition on as a function check. ..,.

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Instrument s and warnin g/indic ator ligh ts 21
@ Tips
If this warning/indicator light illuminates
while you are dr iving, then there is a mal­
function in the engine electron ics. Have
the malfunction corrected as soon as pos­
sible by your authorized Aud i dealer or
qualified repair fac ility.
W Glow plug system
Appl ies to vehicles: with diesel e ngin e
The control light illuminates when the glow
plug system is active.
If the IJ indicator light illum inates, the glow
plug system is active. You should start the en­
gine immediately after the indicator light
switches off. The indicator light only illumi­ nates for approx imately 1 second if the en­
g ine is wa rm or if the outside temperature is
above 46 QF (8 Q().
@ Tips
- If the glow plug indicator light illumi­
nates while driving, there is an engine
control malfunction. The engine shou ld
be checked immediately.
- If the indicato r light does not illum inate
at all when switching the ignition on,
there may be a malfunction in the glow pl ug system . The engine should be
checked.
a Malfunction Indicator Lamp (MIL)
The Malfunction Ind icator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
The symbol
(4 lights up when the ignit ion is
sw itched on and w ill turn off after the engine
has started and has sett led at a constant idle
speed. This ind icates that the M IL is working
p roperly.
The warning light illuminates when there is a
malfunct ion in the engine e lectronic system.
Contact your author ized Audi dealer and have
the ma lfunction co rrec ted.
An improperly closed fuel filler cap may also
cause the MI L light to illum inate
¢ page 216.
For more information ¢ page 29.
_, Diesel particulate filter clogged
Appl ies to vehicles: wi th diese l en gine a nd diesel particu­
late filter
II Pa rti cul ate filter : S ys tem f ault See own ­
er 's manual
When the II symbo l illuminates, you can a l­
te r you r d riving style to ass ist the filter se lf­
cl ean ing process. Drive for approximately 15
minutes with the se lector lever in the S posi­
tion at a minimum speed of 37 mph (60 km/ h) and an engine speed of approximately
2,000 RPM. The temperat ure increase that
will result from this can burn off the soot in
the fil ter. The symbol will switch off when the
cleaning is successful. After a successful
clean ing, there is no need to bring the car to
an authorized dea ler or qualified workshop
be cause th is is part of no rma l vehicle opera ­
t ion.
If the symbol II does not switch off, see your
authorized dea ler o r other qualified workshop
to have the p rob lem cor rected.
For more information on the diesel part icu­
late filter, refer to ¢
page 202.
A WARNING
Always adapt your speed to the current
wea ther, road and traffi c conditions. You
should never disobey traffic laws in order
to fo llow driving recommendations .
!7 Engine speed limitation
Applies to vehicles : wi th engine speed limitatio n
(m Engine speed ma ximum X XXX RPM
-
The eng ine speed is automatically limited to
the speed d isplayed in the driver info rmation
system. This pro te cts the engine from over ­
heating.
T he eng ine speed limitation deactivates once
the engine is no longer in the cri tical tempera­
tu re range and yo u have re leased the accelera-
tor pedal once.
Ill>

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.

24 Instruments and warning/indicator lights
Driver information
display
Overview
Fig. 4 Driver information system in the instrument
cluster
Fig. S Display: example of th e information line
The driver information system contains infor­
mation @ that is displayed on tabs @
c:;, fig. 4. The following content is possible de­
pending on vehicle equipment:
@
®
Tab Content
1 Vehicle functions :
On-board computer c::> page 25
Efficiency program* c::> page 26
Digital speedometer
Cruise control*
c;, page 82
Adaptive cru ise con trol and braking
guard*
r::;, page 84
Audi active lane assist* c;, page 93
Display darkened
2 Indicator lights and messages
Warning when a door, the hood or the rear lid is not closed
Service interval display
c::> page 2 7
Speed warning system c;, page 81
@ ®
Tab Content
3 Night vision assistant* c;, page 103
4 Audio/video
s Telephone*
6 Navigation*
T he second and th ird tabs are only vis ible if at
least one indicator light or message is shown
or if that system is sw itched on.
The status line © is located in the bottom
part of the display
c::> fig. 4. It displays the ex­
terior temperature , time, selector lever posi­
t ion, trip odometer and odometer.
For some vehicle functions, you can access the
trip information from the temporary memory
c::> page 26 in the line (D c::> fig. 5.
_& WARNING
= -
- Never rely exclusively on the outside
temperature display to determine if a
road surface is icy or not. Keep in mind
that road surfaces, especially bridges
and overpasses, could be ice covered and
slippery even at an outside temperature
above 41 °F
(+5 °().
-Always remember, even if the "snow­
flake" symbol (ice warning) does not ap­
pear in the d isplay, black ice could be on
the road.
- Always reduce your speed and drive with special care in cold weather cond itions
when the chance of encountering icy
road surfaces increases.
(D Tips
-If the vehicle is stationary, or if you are
dr iving at a very low speed, the tempera­
ture shown in the d isplay m ight be
slightly higher than the actual outside
temperature . Thi s is caused by the heat
being radiated from the engine.
- Yo u can select the units used for temper­
ature, speed and other measurements in
the MMI.
IJ,-