2014 AUDI A6 check engine

Error messages . . . . . . . . . . . . . . . . . . 125
Trailer hitch . . . . . . . . . . . . . . . . . . . . . 125
Homelink
Universal remote control ... .. .. .. . .
S afet y fir st ... ...... ... .. .. .. . .
Dri ving Safely ...... ... .. .. .. . .
Gene ral notes ..... .... ... .. .. .. . .
Proper occupant seating posit ions . . .
Driver and passenger side footwell . . .
Pedal area .. ................. .. . .
Stowing luggage ............. ... .
Report ing Safety Defects .......... . 126
126
12
8
128
128
129
133
133
1 34
136
Safety belts . . . . . . . . . . . . . . . . . . . 138
Ge neral notes . . . . . . . . . . . . . . . . . . . . 138
Why safety be lts? . . . . . . . . . . . . . . . . 139
Safety belts . . . . . . . . . . . . . . . . . . . . . 1 41
Safety bel t pre tens io ners . . . . . . . . . . 1 45
Airbag system ........... .. .. .. 147
I mpo rtant th ings to know . . . . . . . . . . 147
Fr ont airbags . . . . . . . . . . . . . . . . . . . . 1 51
M on itoring the Advanced Airbag
System . . . . . . . . . . . . . . . . . . . . . . . . . 159
Knee airbags . . . . . . . . . . . . . . . . . . . . . 164
Side airbags . . . . . . . . . . . . . . . . . . . . . 167
Side curta in a irbags . . . . . . . . . . . . . . . 170
Child Safety ............... .. . .
Important things to know .. .. .. .. . .
C hi ld safety seats ... ...... .... .. . .
Install ing a child safety seat .. .. .. . .
L ATC H Lower ancho rages and tethe rs
for ch ild ren . ............. .... .. . .
Addit ional Information
Audi pre sense ..... ... .. .. .. . .
P reven tat ive passenger p rotection
Vehicle operat ion ..... .. .. .. . .
Intelligent technology .. .. .. . .
Not ice about da ta re cor ded by veh icle
control mod ules ... .... ... .. .. .. . .
Elect ronic Stabilization Control (ESC) .
Braking .... .. .... .. .... ... .. .. . .
E lectro-mechanical power assist . .. . . 173
173
179
184
187
19
1
192
19 2
194
194
194
194
196
198
Table of contents 3
Driving with your q uattro . . . . . . . . . . 198
Energy management . . . . . . . . . . . . . . 199
Driving and environment . . . . . 201
The first 1,000 miles (1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . . . . 201
Catalytic converter . . . . . . . . . . . . . . . . 202
Diesel particulate f ilter . . . . . . . . . . . . 202
Avoid damaging the vehicle . . . . . . . . . 203
Drivi ng throug h wate r on roads . . . . . 203
Sh utting down vehicle . . . . . . . . . . . . . 203
Operate your vehicle economically a nd
min imi ze poll ution . . . . . . . . . . . . . . . . 203
Trailer towing . . . . . . . . . . . . . . . . . 206
Drivi ng with a trailer . . . . . . . . . . . . . . 206
T rail er tow ing t ips . . . . . . . . . . . . . . . . 208
Vehicle care . . . . . . . . . . . . . . . . . . . 210
Vehicle care and cleaning . . . . . 210
Genera l informa tion . . . . . . . . . . . . . . 210
Car was hes . . . . . . . . . . . . . . . . . . . . . . 210
Cleaning and care information . . . . . . 211
Fuel supply and filling your
fuel tank ... .... .. . .. .. ..... ... .
215
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . 215
Diesel f uel . . . . . . . . . . . . . . . . . . . . . . 216
Fuel tank.. .. .. .. ... ............ . 217
Se lective cata lytic reduction . . . . . . . . 220
Checking and filling . . . . . . . . . . . 224
E n gine hood . . . . . . . . . . . . . . . . . . . . . 224
E n gine compartment . . . . . . . . . . . . . . 226
Engine oil . . . . . . . . . . . . . . . . . . . . . . . 226
En gine cooling system . . . . . . . . . . . . . 231
Br ake fluid . . . . . . . . . . . . . . . . . . . . . . 234
B attery . . . . . . . . . . . . . . . . . . . . . . . . . 235
Windsh ie ld/headligh t washer
container . . . . . . . . . . . . . . . . . . . . . . . 238
Tires and wheels . . . . . . . . . . . . . . 24 0
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Tire pressure monitoring system . . . . 258
•
•

Instrument s and warning /indicator lights 11
Instruments and warning/indicator lights
Instruments
Instrument cluster and controls
The instrument cluster is your central source of information.
Fig. 3 Overv iew of the instrument cluster
CD Coolant temperature gauge .. .
@ Tachometer (eng ine rev counter)
@ Turn signals ............... .
@ Display with
®
®
-Driver information system .. .
- Wa rning/ind icator lights
Tachometer Fuel gauge
@ Tips
11
12
45
24
12
12
The instrument illumination (for dials and
needles) turns on when the ignition is on
and the vehicle lights are turned off. As
the daylight fades, the illumination of the
dials likewise dims automatically and wil l
go out completely when the outside light
is very low. This feature is meant to rem ind
you to switch on the headlights when out­
side light conditions become poor.
Engine coolant temperature gauge
The engine coolant gauge CD¢ page 11, fig. 3
only works when the ignition is on. To prevent
damage to your eng ine, please note the fol­
l owing important points:
Engine cold
If only the LEDs at the bottom of the gauge
turn on, the eng ine has not reached operating
temperature yet . Avoid high engine speeds,
heavy engine loads and heavy throttle applica­
tions.
Normal temperature
The engine has reached its operating temper­
ature once the LEDs up to the center of the
gauge turn on under normal driving cond i­
t ions. The LEDs higher up may turn on when
the engine is under heavy load or the exterior
temperature is high. This is no need to worry
as long as the. warning light in the instru­
ment cluster does not illuminate. If the LEDs
in the upper area of the disp lay and the indica­
tor light . in the instrument cluster display
turn on, the coolant temperature is too high
¢page 17.
A WARNING
-Always observe the warn ing in
¢ page 224, before opening the hood
and checking the engine coolant level.

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
<=> page 224.
@ Tips
Ma lf u nctions or faults wi ll be identified ei­
ther with a red symbo l (pr iority 1 -Dan­
ger!) or with a yellow symbol (pr iority 2 -
Warn ing).
Overview
Some ind icator lights turn on briefly to check
the function of that system when you switch
the ignition on. These systems are ma rked
with a ,/ in the following tables. If one of
these indicator lights does not turn on, there
is a malfunction in that system.
Red indicator lights
Red symbols indicate a prio rity malfunction -
D anger!
- Pull off the road.
- Stop the vehicle.
-Turn off the engine.
- Check the ma lf u nctioning system . Contact
your authorized Audi dea ler or a qualified
workshop for assistance.
USA models :
Brake malfunction ,/
<=>page 15
Canada models :
Brake malfunction,/
¢page 15
USA model s:
Electromechanical parking brake
<=> page 16
Canada m odel s:
Electromechanical parking b ra ke
<=> page 16
Engine cooling system
¢page 17
Engine oil pressure
¢ page 18
Engine o il level
¢ page 18
Battery
¢page 17
Safety belt
¢page 17
Electromechanica l steering ,/
c:>page 198
Electronic steering column lock
¢ page 18
Engine star t sys tem
¢ page 18
Cent ral ind icator light
¢ page 19
USA mod els : Speed warn ing sys­
tem
¢ page82
Canada mod els : Speed warning
system
~ page82
Adaptive cruise control *,/
¢page86
Air su spension *
c:>page 19
Pedestrian wa rning *
¢page 103
Refi ll Ad Bl ue*
¢ page 220
Ad B lue malfunct ion*
¢ pag e220
Yellow indicator lights
Ye llow symbo ls indicate a priority 2 malfunc ­
tion - Warning!
m
llEI
US A mod els : Safety systems
¢ page 19
Canada models : Safety systems
¢ page 19 liJI,

Instruments and warning/indicator lights 15
Ill
Ad Blue /9
Ad Blue./'
Electrome chanical stee ring
c::> page 19 8
Air suspens ion*
c::>page 19
Spo rt differentia l*
c::>page23
Refill Ad Blue *
c::>page 220
AdBlue malfunction*
c::> page 220
Other indicator lights
11
II
•
I
•
•
T ur n signa ls
c::>page24
Canada models: C ruis e co ntrol*
c::> pag e82
Adapt ive cruise control*
c::> page86
Adapt ive cr uise contr ol*
c::> page86
Adapt ive cr uise c ontr ol*
c::> page 86
Au di active lane ass ist *
c::> page 94
Start -Stop-System *
c::> page 79
Start -Stop -System *
c::> page 79
High beam
c::> pa ge 45
BRAKE /((J)) Brake system
The li ght illum inates when the igni tion is
sw itche d on.
It goes ou t aft er t he eng ine has been sta
rte d. T his indica tes that the brake
warning light is functioni ng 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 bra ke sys tem wa rn in g/ ind ic a tor l ight
t u rns o n, there is a brake sys tem m alfu nct ion .
1111 (USA models)/ . (Canada models)
Stop vehicle and check brake fluid level
If the indicator light turns on and the mes­
sage appea rs , proce ed as fo llows:
.,. Pull off t he roa d.
.,. Stop the vehicle.
.,. Tur n off the engi ne.
.,. Check t he b rake fluid level
c::> page 234 .
.,. Con tact yo ur nearest au tho rized re pair fa-
c ility if ne cessa ry.
Warning! Fault in brake system . Contact
dealer
If the ABS ind icator light 9 (USA models)/
(11 (Ca nada mode ls), the ESC ind icator lig ht
Ji1 and the b rake sys te m indicator light
1111 (U SA mo dels)/ . (Canada mode ls) tur n
o n and the message a ppears, t he A BS, ESC
and bra ki ng d istr ibu tio n are no t wo rki ng
c::> ,&. .
Carefully drive to your author ized Audi d ealer
i mmediat ely to have th e malfunct ion correct­
ed
c::> ,&. .
1111 (USA models) /. (Canada models)
Parking brake: system fault! Please contact
dealer
- If the ind icator light and the message ap ­
pear
when stationary or after switch ing the
ignition on ,
check if you can release the
park ing brake . Afte r releasing the parki ng
bra ke, ca refully drive to your au thor ized
Aud i de aler im media tely t o have the mal ­
fu nction cor rect ed. If yo u ca nno t r ele ase the
p arking brake, see k professiona l assistance .
- If the indicator light and the m essage ap -
pe ar
while driving , the e merge ncy b raki ng
fu nction m ay not be avail able.
It ma y not b e .,..

Instruments and warning/indicator lights 17
-L Engine cooling system malfunction
A malfunction in the engine cooling system
must be repaired as soon as possible.
• Switch off engine and check coolant level
If the indicator light turns on and the mes ­
sage appears, the coo lant temperature is too
high or the coo lant level is too low.
.. Pull
off the road.
.. Stop the vehicle .
.. Turn
off the engine.
.. Check coolant level¢
page 232.
.,. Add coolant if necessary¢ page 232 .
.. Continue driving only after the eng ine cool­
ant warn ing/ indicator light goes out .
.. Contact your authorized Audi dealer for as-
sistance if necessary .
If the engine coolant level is correct, then the
radiator fan may be the cause of the malfunc­
tion .
• Coolant temperature too high! Please let
engine run with vehicle stationary
If the indicator light turns on and the mes­
sage appears in trailer mode*, let the engine
run at idle for a few m inutes to cool down.
A WARNING
- If your veh icle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the engine and turn on the hazard
warning lights¢
page 44, Emergency
flasher.
- Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed. Wait until you can no longer see or
hear steam or coo lant escaping .
- 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 224.
@ Note
Do not continue driving if the . symbol
ill uminates . There is a malfunction in the
engine cooling system -you could damage
your engine.
D Battery
This warning/indicator light detects a mal­
function in the generator or in the vehicle 's
electrical system .
The .warn ing/ indicator light illuminates
when you switch on the ignition and must go
out after the eng ine has started .
• Alternato r fault : Battery is not being
charged
If t he indicator light turns on and the mes­
sage appears, there is a malfunction in the
generator or vehicle electrical system .
Drive to your authorized Audi dealer or quali­
fied workshop immed iate ly. Because the vehi­
cle battery is discharging, turn off all unnec ­
essary e lectrical equipment such as the radio.
Seek professiona l assistance 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
ability .
If this message turns off after a little while,
the battery charged enough while driving.
If the message does not turn
off, have your
authorized Aud i dea ler or qualified workshop
correct the malfunction.
4t Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The . warn ing/ indicator light illum inates
when the ignition is switched on to remind
the driver and any front passenge r to put on ..,.

18 Instrum ent s and w arn ing /indic ato r light s
the safety belt. Additionally, an acoustic warn­
ing (gong) will a lso sound.
For more Information
c::> page 138, ~ Safety
belt warning light.
The red engine oil pressure warning symbol
requires immediate service or repair. Driving
with a low-oil-pr essur e indication is likely to
inflict severe damage to the engine.
• Swit ch off engine and ch ec k oil l evel
If the indicator light turns on and the mes­
sage appears, the oil pressure is too low .
., Pull off the road.
., Stop the vehicle.
., Turn off the engine .
., Check the engin e oil level c::> page 229 .
., If the engine oil level is too low, add engine
oil
c::> page 229 . Make sure that the oil p res­
s u re warning symbol. appears no longe r
in the disp lay before you start dr iving again.
• If the engine oil level is correct and the indi­
cato r light sti ll turns on, turn the engine off
and do not continue driving. Seek professio­
nal assistance.
(D Tips
- The engine oil pressu re symbol. is
not an indicator for a low eng ine oil lev ­
el. Do not rel y on it. Inst ead , che ck th e
oil l evel in your engin e at regular int er­
val s, pref erabl y each tim e you refu el,
and alwa ys bef ore go ing on a long trip .
- The yell ow oil le vel warning indication
II requires oil refill or wo rksho p serv ·
ic e without del ay . Do n ot wait unti l the
red oil pre ssur e w arning. sta rt s to
fla sh before you re spond t o the low oil
le vel warning
II. By then , your engine
may al ready have suffered serious dam­
age .
~ .. Engine oil level
• WARNING: P lease add oil immedia tely
If the indicator light and the driver message
appear, add engine oi l immediate ly
c::> page 226 .
II Add oil, m ax. x q t (l). Yo u m ay contin ue
driving
When the symbol and the driver message ap­
pear, add the amount of oil appearing in the
display at the nex t oppor tunity
c::> page 226.
@ -Steering column lock
• Do not dr ive veh icle : Stee ring defecti ve
If the indicator l igh t turns on and the mes­
sage appears, there is an e lectronic stee ring
column lock malfunction . You cannot switch
the ignition on .
Do
not tow your vehicle because it cannot be
steered . See k professiona l assistance .
1;11 Steering lo ck : s ystem fault . Plea se con­
tact de ale r
If the indica tor light turns on and the mes­
sage appears, there is an electronic steering
column lock malfunct io n.
Drive to your authori zed Audi dealer immedi­
ately to have the mal function corrected .
A WARNING
Your vehicle must not be towed in the
event of a malfunction in the electronic
steering co lumn lock because it cannot be
steered due to the loc ked steering. If it is
towed with the steering locked, there is
the r isk o f an accident .
©-Engine start system
• Engine st art system fa ult. Ple ase con­
tact deale r
If the indicator l ight turns on and the mes­
sage appears, do
n ot switch the ignition off
because you may not be ab le to switch it on
again.
Drive to your authorized A udi dealer immed i-
a tely to have the ma lfunction corrected. ..,.

Instruments and warning/indicator lights 19
II! Engine start system fault. Please con­
tact dealer
If the indicator light turns on and the mes­
sage appears, there is a ma lfunction in the en­
gine start system.
Drive to your authorized Aud i dea le r immedi­
ately to have the malfunction corrected.
~ Air suspension
Appl ies to vehicles: with air suspension
• Air suspension: system fault. Can contin­
ue slowly with max. 35 mph .
There is a malfunct ion that can result in re­
stricted dr iv ing stab ility.
Carefully drive at a maximum speed of 35
mph (60 km/h) to your authorized Audi dealer
or qua lified workshop to have the malfunction
cor rected.
• 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 ma lfunction that can result
in restricted driving stability or reduced
ground clearance.
Dr ive to your a uthorized 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 malfunct ion . 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.
G:;/ !f Safety systems
The fl (USA models) ;EI (Canada models) in­
dicator light monitors the safety systems (e.g .
airbags, pretensioners) and illuminates for a few
seconds each time you switch the ignition
on .
If the fl (USA models);EI (Canada models)
indicator light does not go out, or if it illumi­
nates while you are driving, or if it starts to
blink, then there is a malfunction somewhere
in the system.
If the light does not illum inate
when you switch the ign ition on, th is also
means there is a malfunct ion.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your authorized Audi dealer immediately. Otherwise the safety sys­
tems may not work properly in an acc i­
dent.
& Central indicator light
If the indicator light. or n turns on, check
the message in the instrument cluster .
nlft Electronic Stabilization Control
(ESC)
If the JjJ indicator light blinks while driving,
the ESC or ASR (Anti-Slip Regulation) is active ­
ly regulating.
If the
$.J indicator light turns on, the system
has switched the ESC off. In this case, you can
switch the ign ition off and then on to switch
the ESC on aga in. The indicator light turns off
when the system is functioning fu lly.
If the
1B indicator light turns on, ESC was re­
stricted using the
1 .$ OFF I button c> page 194.
Stabilization control (ESC/ABS): Fault! See
owner's manual
If the G) indicator light and the ABS indicator
light
fJ] (USA mode ls) ;flJ (Canada models)
turn on and the message appears, the ABS or electronic differential lock is malfunctioning.
This also causes the ESC to malfunction . The
brakes still function with their normal power,
but ABS is not active .
liJI,

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 .