Engine light AUDI A6 2014 User Guide

Instrument s and warnin g/indic ator ligh ts 21
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 immed i­
ately by your authorized Audi dealer or a
qualified workshop. Dr ive slowly and
avo id sudden, hard brake applicat ions.
(0) Worn brake pads
IJ Brak e pads!
If the warn ing light illum inates, immediately
contact your author ized Audi dealer or quali­
fied workshop to have all bra ke pads inspect­
ed. O n USA models the wa rning light
IJ
comes on togethe r wi th the warn ing light
1111 . Both sets of brake pads on an axle
must always be replaced at the same time .
& WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the wa rning light IJ and the warning
light
11111 ) with the message B rake
pads ! comes on in the instrument cluster
display, immediately contact your au­
thorized Aud i deale r or qualified work­
shop to have all brake pads checked or replaced if necessary.
EPC Electronic powe r control
App lies to vehicles: with gaso line engine
This warning/indicator light monitors the
electronic power control .
The Ga warning/ indicator light (Electron ic
Power Control) illuminates when you switch
the ignition on as a function check .
@ 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 malfu nction corrected as soon as pos-
l ) - : USA models only
-
'
sible by your authorized Audi dealer or
qualified repair facility .
W Glow plug system
Applies to vehicles: with diesel eng ine
The control light illuminates when the glow
plug system is active.
If the II i ndicato r light illum inates, the g low
pl ug system is a ct ive. You sho uld start the en­
gine immediately after the ind icator light
switches off. The indicator light only illum i­
nates for approximate ly 1 second if the en­
gine is warm or if the outs ide temperature is
above 46 QF (8 Q().
(l) Tips
-If the glow plug indicator light illum i­
nates while dr iving, there is an eng ine
control malfunction. The engine should
be checked immed iate ly.
- If the ind icator light does not illuminate
at all when switch ing the ign it ion on,
there may be a malfunction in the glow
plug system. The engine sho uld be
ch ecked.
0 Malfunction Indicator Lamp (MIL)
T he Ma lf u nction Indicator Lamp ( MIL) is pa rt
of the On-Board Diagnostic (OBD II) system.
T he symbo l
¢.j lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
speed. This indicates that the MIL is work ing
properly.
The warning lig ht ill uminates when there is a
malfunction in the engine electron ic system.
Contact your a uthorized Audi dea ler and have
the malfunction corrected.
An improperly closed fuel filler cap may a lso
ca use the MIL light to illuminate
9 page 218.
For more information 9 page 30 .

22 Instruments and warning/indicator lights
®'-Diesel particulate filter clogged
Applies to vehicles: with diesel engine and diesel particu­
late filter
II Particulate filter: System fault See own­
er's manua l
When the. symbol ill uminates, you can a l­
ter your driving style to assist the fi lter self­
clean ing p rocess . D rive for approx imately 15
minu tes wi th the sel ector leve r in the S pos i­
tion at a m inimum speed of 37 mph (60 km/
h ) a nd an engine speed of app rox imately
2, 000 R PM. The tempe ratu re i ncrease th at
will resu lt fro m t his can bur n off t he soo t in
the fil ter. The symbol wi ll switch off when the
clean ing is successf ul. Afte r a successful
cleaning, there is no need to br ing the car to
an author ized dealer or qualif ied worksh op
beca use this is part of normal vehicle opera­
ti on .
I f the symbo l
Ill does not switch off, see
your author ized dealer or other qualified
workshop to have the prob lem cor rected.
For more in format io n on the diesel pa rticu ­
l ate filte r, refer to
¢ page 202.
A WARNING
Always adapt yo ur s peed to the cu rrent
weat her, road and traffic conditions. Y ou
sh ould never disobey t raffic laws in order
t o follow driv ing recomm endations .
!'7i Engine speed limitation
Applies to vehicles: with engine speed limitat ion
Ill Engine speed maximum XXXX RPM
-
The engine speed is automatically lim ited to
the speed disp layed in the dr ive r information
system. This protects t he e ng ine from over ­
h eat ing.
The engine speed limitation deactivates once
the eng ine is no longer in the crit ica l tempera­
ture range and you have released the acce lera ­
tor peda l once.
If t he engine speed limitation was act ivated
by an eng ine control malfunction, the ind ica- tor
light ~ also tu rns on . Ma ke s ure that the
s p eed does not go a bove the s peed disp layed .
Drive to y our authorized A udi dealer immedi ­
ate ly to have the ma lfunction corrected.
~"" Engine oil sensor
l!I Oil level! Sensor defective
If the symbol illuminates, contact yo ur au­
t h orized Audi dea ler and have the oil sensor
i nspected . U ntil yo u have this done, check t he
o il level each time you refue l just to be on the
saf e side
c> page 229.
EltJ Fuel level indicator
Ii] Please refuel
If the indicato r light turns on f or the first
t ime and the message appea rs, there are
abo ut 2.6 ga llons (10 lite rs) o f fuel left in the
tan k. Time to refu el
<=> page 217 .
llD Tank system malfunction! Contact dealer
If the indicator light turns on and this mes­
sage a ppears, there is a malf unct ion in the
tank system.
D rive to your au thori zed A udi dealer immedi ­
ate ly to have the ma lfu nction corrected.
Co Windshield washer fluid level
• Please refill washer fluid
If the symbol illum ina tes, ad d windshie ld
washe r fl ui d to t he washer system/headlight
washe r system *
¢ page 238 .
4J:> Windshield wipers
£~$ Windshield wiper defective
T he re is a malfunction with t he windshie ld
wipe rs .
Dr ive to your au th o riz ed A udi de aler i mme di­
ately to have the m alfunction correc ted.

Instruments and warning/indicator lights 25
For some vehicle functions, you can access the
trip information from the temporary memory
¢
page 26 in the line CD¢ 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 display, black ice could be on
the road.
- Always reduce your speed and drive with
special care in cold weather conditions
when the chance of encountering icy
road surfaces increases.
@ Tips
- At temperatures below 14 °F (+ 5 °C) a
snowflake symbol appears ahead of the
temperature display. It is intended to re­
mind the driver to pay special attention
to
ice on the road ¢ ,&. . If the vehicle is
stationary, or if you are driving at a very
low speed, the temperature shown in the
display might be slightly higher than the
actual outside temperature . This is
caused by the heat being radiated from
the engine .
- You can select the units used for temper­
ature, speed and other measurements in
the MMI.
- For information on the audio/video and
navigation* functions, refer to the sepa­
rate MMI owner's manual.
Operation
The driver information system is operated us­
ing the buttons on the multifunction steering
wheel.
Fig. 6 Multif unctio n steerin g wh eel: operat in g th e driv­
er informat ion sys te m
Fig . 7 Dr iver informat ion syste m: o penin g the ve hicle
fu nctio ns me nu
Operating concept
"'Switch the ignition on .
"'To switch between the tabs, press the rocker
switch CD to the left or right ¢
fig. 6.
"'To access additional information below or
above, rotate the thumbwheel @down or
up.
"' To confirm a selection, press the thumb­
wheel @.
"' Press the
Iii button @ to open a sub menu
for an active tab .
"'Press the button @ to access a function for
the programmable steering wheel button* .
Accessing Vehicle functions
"'Select the first tab with the rocker switch
CD -
.. Press the button
liJ@. The Vehicle func­
tions
menu appears ¢ fig. 7.
"'To select a menu item, turn and press the
thumbwheel @.

Instrument s and warning /indicator lights 2 7
Other equipment that is currently affecting
fuel consumption is listed in the efficiency
program. The display shows up to three other
items of equipment @. The equipment using
the most fuel is listed first. If more than three items using fue l are switched on, the equ ip ­
ment that is currently using the most f uel is
d isplayed .
A scale @ also shows the current total con­
sumpt ion of all other equ ipment .
Fuel economy messages
Fig. 9 Dis p lay: exa mple of a fue l eco no m y m essage
F ue l economy messages are disp layed when
fuel consumption is increased by certain con ­
ditions. If you follow these fuel economy mes­
sages, you can reduce your vehicle's consump­
tion of fuel. The messages appear automati­
cally and are only disp layed in the eff ic iency
p rog ram. The fuel economy messages turn off
au tom atically after a certa in period of time.
~ T o turn a n economy message off immediate­
ly after it appears, p ress any b utton o n the
mult ifunct ion steer ing whee l.
@ Tips
-Once you have t urne d a fuel economy
m essage off, it will only appear again af­
te r you turn the ignition o n aga in.
- The fuel economy messages ar e not dis­
p layed in
every insta nce, but rat her i n in­
t e rva ls
ove r a period of t ime .
Cylinder on demand System
Applies to veh icles: w ith 4.0 TFSI engine
Fi g. 10 Inst rumen t cl us ter : fu el cons umption
To save fuel, the engine automatically turns
fo ur cy linders on or off, depend ing on the
amount of power needed . Th is act io n is not
felt by the passengers .
Displaying cylinder mode
Requirement: the on -board comp ute r is d is ­
played ¢
page 26.
~ Turn the thumbwheel u nti l the current fuel
cons umption display is shown in the instru ­
ment cluste r.
If the green bar is displayed,
y o u are driving in 4-cy linder mode.
Basic requir ements for 4 -cylinder mode
4 -cylinder drive mode is used a utomat ica lly if
certain basic requirements a re f ulfille d. These
incl ude :
-A low power ou tpu t re qui rement.
- Dr iving in t hird gear or hig her.
- Engi ne speed between 960 and 3,500 RPM .
-A warm eng ine.
Odometer
Fig. 1 1 Instrumen t cluste r: Odo mete r and rese t but­
to n

30 Instruments and warning/indicator lights
Display brightness
You can adjust the display brightness in the
MMI. The display brightness decreases auto ­
matica lly as the amo unt of light decreases.
The basic leve l of brightness is adjusted with
the instrument illumination
c:> page 46.
(D Note
To prevent scratches on the glass covering
the Head-up Disp lay, do not place any ob­
jects in the projection opening.
@ Tips
- Sunglasses with polarization fi lters and
unfavorable lighting conditions can af­
fect the display.
- A specia l windshield is needed for the
Head-up Display function.
- For information on cleaning, refer to
c:> table on poge 212.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) II! in
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator light illuminates when
the ignition is switched on and goes o ut after
the engine starts and the idle has stabilized.
This indicates that the MIL is working proper­
ly .
If the light does not go out after the engine
is started, or illuminates while you are driv­
ing, a ma lfunction may exist in the engine sys­
tem. If the light illuminates, the catalytic con­
verter could be damaged.
Continue driving
with reduced power (avoid­
ing sustained high speeds and/or rapid accel­
erations) and have the condition corrected.
Contact your authorized Audi dealer .
If the light illuminates, the electronic speed
limiter may also be malfunctioning. For more information
r=.> page 31,
Electronic speed
limiter .
An improperly closed fuel filler cap may also
cause the MIL light to illuminate
c:>page 218.
On-Board Diagnostics
Fig. 16 Locat ion of Data L ink Con nector (DLC)
On-Board D iagnost ics monitors the compo­
nents of your em iss ion control system . Each
monitored component in your engine system
has been assigned a code . In case of a mal­
function, the component will be identified
and the fault stored as a code in the control
module memory.
T he MIL light may also illuminate if there is a
leak in the on-board fuel vapor recovery sys­
tem.
If the light illum inates after a refuelling,
stop the vehicle and make sure the fuel filler
cap is properly closed
c:> page 218.
In order to make an accurate diagnosis, the
stored data can only be displayed using spe ­
cial diagnostic equipment (generic scan tool
for OBD).
In order to connect the special diagnostic
equipment, push the plug into the Data Link
Connector (DLC). The DLC is located to the
right of the hood release
r=.> fig . 16 .
Your authorized Audi dea ler or a qualified
serv ice station can interpret the code and per­
form the necessary repair.
A WARNING
Do not use the diagnostic connector for
personal use. Incorrect usage can cause

malfunctions, which can increase the risk
of a coll is ion!
Electronic speed limiter
Instruments and warning/indicator lights 31
Your vehicle may be factory equipped with
tires that are rated for a maximum speed of
130 mph (210 km/h) . This is less than the
maximum speed of your vehicle. To reduce the
risk of sudden tire failure and loss of control if
the veh icle is ope rated at excessive speeds,
your veh icle also has an elect ronic speed limit­
er. The electronic speed limiter prevents your
vehicle from going faster than the tire speed
rating . For more information
c:::> page 251.
If the engine control unit receives faulty vehi­
cle road speed s ignals, the Malfunction Indi­
cator Lamp (MIL)
¢,llij will illuminate . If this
occurs, contact the nearest authorized Audi
dealer for assistance.
S models
Your veh icle's top speed is electronically limit­
ed to 155 mph (250 km/h).
I f the engine control unit receives faulty vehi­
cle roadspeed signals, the Malfunction Indica­
tor Lamp (MIU
¢,llij will illum inate. If this oc­
curs, contact the nea rest authorized Audi
dealer for assistance.
8_ WARNING
Always observe the posted speed limits
and adjust your speed to suit prevailing
road, traffic and weather conditions. Never
drive your vehicle faster than the maxi­
mum speed rating of the tires insta lled.

32 Opening and clo sing
Opening and closing
Keys
Key set
Fig . 17 Key set
@ Remot e control k ey w ith m echan ical
ke y
You can centrally lock and unlock your vehicle
and start the engine with the master key with
remote control. A mechanical key is integrat­
ed in the remote control key
r:::;, page 33 .
@ Eme rgenc y ke y
The emergency key is not intended for con­
stant use.
It should only be used in an emer­
gency. Keep it in a safe place and do not carry it on your key ring .
Key replac em ent
If you lose a key, contact your authorized Audi
dealer immediately to have the
lost key disa­
bled. Be sure to bring all your keys with you.
P er sonal c omfo rt se ttin gs
If two peop le use one vehicle, it is recom­
mended that each person always uses "their
own" master key . When the ignition is switch­
ed off or when the vehicle is locked, personal
convenience settings for the follow ing sys­
tems are stored and assigned to the remote master key .
- Automatic climate control
- Central locking system
- Amb ience light ing*
- Seat memory*
- Parking system*
- Adaptive cruise control* - Audi active
lane assist *
- Aud i side assist*
- Aud i drive select
- Night vision assistant*
- Heated steering wheel*
The stored settings are automatically recalled
when you unlock the vehicle, when you open
the doors or when you switch the ignition on.
A WARNING
-- Do not leave your vehicle unattended . Al-
ways take your ignit ion key with you and
lock your vehicle . Entry by unauthorized
persons could endanger yo u or resu lt in
theft or damage the vehicle.
- Do not leave ch ildren unattended in the
veh icle, especially with access to vehicle
keys. Unguarded access to the keys pro­
vides children the opportunity to start the engine and/or activate vehicle sys­
tems such as the power windows, etc .
Unsupervised operation of any vehicle
system by children can result in serious
injury.
(1) Tips
- The operation of the remote control key
can be temporar ily disrupted by interfer­
ence from transm itters in the vic inity of
the vehicle working in the same frequen­
cy range (e.g. a cell phone, radio equip­
ment).
- For security reasons, rep lacement keys
are only ava ilable from Audi dealers.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions
r:::;, page 286.

Removing the mechanical key
Fig. 18 R emo te contro l master key : remov ing the me­
chanica l key
• Press the release button @ c:> fig. 18.
• Pull the mechanica l key @ out of the master
key.
Using the mechan ica l key, you can:
- lock and unlock the storage compartment
on the passenger's side
c::> page 60.
- lock and unlock the vehicle manually
c::>page 37 .
-lock the front and rear passenger doors me­
chanically
c:> page 38.
Master key battery replacement
F ig . 19 Remote master key: Removing the battery
holde r
Check light in the master key
The check light @ in the master key provides
information about different cond itions .
• The check light comes on briefly once when
a button is pressed, and during an "inquiry"
by the conven ience key system .
• If the check light does not come on, the bat­
tery is dead and has to be replaced. In addi­
t ion, when the battery is dead the
I!! sym­
bol appears in the instrument cluster dis-
Opening and closing 33
play as well as the message: Please change
key battery .
Master key battery replacement
• Pull the mechanical key out of the master
key
c::> page 33.
• Press the release button @ on the battery
holder and at the same time pull the battery
holder out of the master key in the direction
of the arrow.
• Install the new battery CR 2032 with the
"+" sign facing down.
• Push the battery holder carefully into the
master key .
• Install the mechanical key.
@ For the sake of the environment
Dispose of dead batteries properly so as
not to poll ute the environment.
(D Tips
The replacement battery must be the
same specification as the original.
, Electronic immobilizer
The immobilizer helps to prevent unauthor­
ized use of your vehicle.
A comp uter chip inside your key automatica lly
deactivates the electronic immobilizer when
the key is inside the vehicle. When you remove
the key from the vehicle, the electronic immo­
bilizer is automatically activated once again .
A WARNING
-
Always take the key with you when you
leave the vehicle. The key can disarm the
e lectronic engine immobilizer and permit
an unauthorized person to start the engine
and enable operation of the vehicle sys­
tems such as power window or power sun­
roof leading to serious personal injury.
(D Tips
- Th e vehicle cannot be started if an unau­
thorized key is used. The vehicle may not
start if another radio device such as a key .,.

40 Opening and clo sing
Child safety lock for
the rear doors
The power child safety lock locks the rear win­
dows and prevent the rear doors from being
opened from the inside.
Fig. 30 Section from driver's door: child safety lock
buttons
• To activate the child safety lock for the left/
right rear door, press the left/right button[!]
i n the d river's door
q fig. 30. The light in the
button w ill turn on.
• To deactivate the ch ild safety lock for the
l eft/right rear door, press the left/right b ut­
ton
III in the driver's door. The light in the
button turns off.
The following features are switched off:
- The interior door handles in the rear doors,
- The power windows in the rear doors .
In order to activate the child safety lock on
the left and the right side, press the two safe­
ty buttons[!] in succession.
Power windows
Controls
The driver can control all power windows.
Fig . 31 Section of the driver's door: Controls
All power window switches are provided with
a two-po sition function :
Opening the windows
• Press the switc h to the fir st sto p and hold it
until the window re aches the desired posi­
tion.
• Press the switch briefly to the
second stop
to automatically open the window .
Closing the windows
• Pull the sw itch to the fir st stop and hold it
until the window reaches the desired posi­
tion .
.. Pull the switch br iefly to the
s e cond stop to
automatically close the window.
Power window switches
@ Drive r's door
® Passenger's door
© Left rear door
@ Right rear door
& WARNING
- When you leave you r vehicle -even if on ­
ly briefly -always take the ignition key
wit h you . This applies particularly when
children remain in the vehicle. Otherwise
the children could start the engine or op­
erate electrical equipment (e.g. power
windows). The power windows are func­
tional unt il the drive r's door or passeng­
er 's doo r ha s been opened.
- Be careful when clos ing the w indows .
Chec k to see that no o ne is in the way, or
serio us inju ry co uld resu lt!
- When lock ing the vehicle from outside,
the vehicle mu st be u noccupied since the
windows can no longer be opened in an
emergency .
{1) Tips
After the ignition has been switched off,
the windows can still be opened o r closed
fo r a bout 10 m inu tes. The power windows
are not switched off until the driver 's doo r
or passenger 's door has been opened.

Starting th e engin e
"'Press the brake peda l c::> _&..
"'Press the !START ENGINE STOP I button
c::>fig. 75. The engine will start .
"' It is possible that the re wi ll be a slight de lay
when starting the engine for diesel vehicles
in colder temperatures. Therefore, you must
hold the brake pedal down until the eng ine
starts. The indicator lamp
&I illum inates
when the eng ine is preheated .
If the engine should not start immediately,
the starting process is automatically stopped
after a short time . Repeat starting procedure .
Start-Stop-Sy stem *:
Note the information on c::> page 79, Start­
S top-Sys tem.
A WARNING
- Never allow the engine to run in confined
spaces -danger of asphyxiation .
- Never turn off the eng ine unti l the vehi­
cle has come to a complete stop .
- The brake booster and power steer ing
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 stee r and brake as you usua l­
ly wou ld, this could lead to crashes and
ser ious injur ies.
- Avoid high engine rpm, fu ll throttle and
heavy engine loads unti l the engine has
reached operating temperat ure - ot her­
wise yo u risk eng ine dam age.
- The eng ine ca nnot be started by pushing
or tow ing the veh icle.
(D Tips
- After a cold engine is sta rted, there may
be a brief period of increased noise be ­
ca use oil p ress ure mus t fi rs t bu ild up in
the hyd raulic valve adjus ters. This is nor ­
mal and not a ca use for concern .
-If yo u leave the vehicle with t he ignit ion
switched on, the ignition will switch off
On th e ro ad 75
after a cer tain per iod of t ime. Please
note that electrical eq uipment 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 .
"' Press the
I STA RT E NGINE ST OP I button
c::>page 74, fig. 75.
When you stop and the Start-Stop-System*
turns off the engine, the ignition remains on .
Press the
! S TAR T ENGIN E ST OPI button to
swi tch the ig nition off du ring a stop phase.
Steering lock
The steeri ng locks when you tur n the engine
off using the
I S TART ENGINE STOP I button
and open the driver's door. The locked steer­
i ng helps p revent vehicle theft.
Emergency off
If necessary, t he engine can be switc hed off
with the se lector lever in the R or D/S posi ­
tion. The eng ine stops if you press the
I S TART ENGI NE STOP I button at speeds below
6 mph (10 km/ h) .
A WARNING
- Never turn off t he engine un til the vehi­
cle has come to a complete stop .
- T he b rake boos ter and power stee ring
only work w hen the eng ine is r unning . If
the engine is off, yo u have to use more
force when steering or braking. Because
you cannot steer and brake as you usual­
ly would, th is cou ld lead to crashes and
serious injuries.
- For safety reasons, you sho uld a lways
park your vehicle w ith the selector lever
in P . Otherwise, the vehicle could inad­
vertently roll away.
- After the eng ine has been switched off,
the radiator fan can cont inue to run for
up to 10 minutes - even with the ignition .,..