2017 AUDI A6 fuel cap

Instruments and indicator lights
-The front spoiler also he lps to distr ib ute
cooling air while driving . If the spoiler is
damaged, the cooling effect w ill be im­
paired and the risk of the engine overheat­
i ng will increase. See an author ized Audi
dealer or authorized Audi Service Fac ility for
ass istance.
(D Tips
Applies to: ve hicles w ith d iese l engines
Due to the high eff ic iency of these engines,
the engine may not always reac h opera ting
t em perature i n cold outside tempe ra tur es.
This is normal and not a cause for con cern .
Tachometer
The tachometer displays the engine speed in rev ­
olutions per minute (RPM).
You shou ld shift to the next lowest gea r whe n
the speed is below 1,S00 R PM. T he begin ning of
the re d zone in the tachome ter ind icates the
maximum permissible engine speed fo r all gea rs
once the engine has been bro ken in and when it is
warmed up to operating temperature . Before
reaching the red zone, you should shift into the
next h igher gea r, c hoose the Dor S selecto r lever
position, or remove your foot from the accelera­
tor pedal.
CD Note
The needle in the tachometer @ c> page 9,
fig. 3
may only be in the red area of the gauge
for a short time or the re is a r isk of engine
damage.
@ For the sake of the environment
Upshifting early helps you to save fuel and re­
duce operating no ise.
(D Tips
Applies to: S models
The engine speed is limi ted when the eng ine
is cold -the full e ngine o utp ut is not availa­
ble. When the engi ne is at ope rating temper­
at ure, the re d a rea i n the ta chome ter move s
t o a higher RPM range.
10
· Fuel level
The display @ only wor ks w hen the ig nition is
swi tched on.
If th e fue l level drops below 2.6 g al
(1 0
L), a red L ED w ill tu rn on and t he HJ indica­
tor light wi ll turn o n
i=>page 18. The LED b links
red when the fue l level is very low .
The poss ible range base d on the cu rrent fue l lev­
e l is shown in tab@¢
page 21, fig . 4.
For th e tank capacity i n your veh icle, refe r to the
Techn ica l Da ta
c> page 257.
CD Note
Neve r drive until t he tank is complete ly em p­
ty. The irregu la r su pply of fuel that res ults
from tha t can cause engine misfires. Un co m ­
b uste d fue l w ill th en en ter the exhaust sys ­
tem . This c an cause overheating and damage
to the ca talyt ic converter .
Indicator Lights
· Description
The ind icator lights in the instrument cluster
bl ink or tur n on. They ind icate fu nctions or mal­
funct io ns.
Messages may appear w ith some indicator lights.
A war ning s ignal will sound at the same time.
The ind icator lights and messages i n the instru­
ment clus ter d isp lay can be cove red by ot he r dis ­
plays. To show them ag ai n, se lec t t he tab for in ­
dicator lights and messages using the mu ltifu nc­
tion steering whee l
c> page 21. If there are sev­
eral ma lfunctions, you can display them one at a
time us ing the thumbwheel.
Some indicator lights in the d isplay can disp lay in
severa l co lors .
Central indicator light
App lies to: vehicles wit h monochrome d isplay
If a message appears together with a central in­
dicator light . or
U. the centra l ind icator light
will indicate the priority of the warning. If a
white indicator light also appea rs, the centra l in­
dica tor light w ill have its ow n colo r. Fo r example, ..,.

Instruments and indicator lights
The indicator light can also turn on if t he fuel fill­
er cap is not closed correct ly ¢
page 192.
~ Diesel particulate filter
App lies to: veh icles w ith diesel engine and diesel particulate
filter
II Particul ate filter: System fault See owner' s
manual
The diesel pa rticulate fi lter requires regene ra ­
tion . To suppo rt the fil ter's se lf-cleaning f un c­
tion :
D rive fo r approximate ly 15 m in utes at 37 mph
(60 km/h) o r above in the S se lector lever posi ­
tion . Keep the eng ine s peed around 2 ,00 0 RPM .
The temperature increase tha t will result from
this can b urn o ff the soot in the filter. The indica ­
tor light will turn off when the cleaning has com­
p leted successf ully.
I f t he i ndicator lig ht does
not tur n o ff, drive im­
mediately to an a utho rized Audi dea ler or a uth or ­
ized A udi Service Faci lity to have the malfunction
corrected.
A WARNING
Always adapt your speed to the cu rrent
weather, road and traffic conditions . You
should never disobey traffic laws in order to
follow driving recommenda tions.
(D Tips
For add it iona l information on the diese l par­
tic ulate fi lter, see
¢ page 198.
!'7 Engine speed limitation
Applies to: veh icles with engine speed limitation
Ill Maximum engine speed: XXXX rpm
The engine speed is automatica lly lim ited to the
speed d isplayed in the instrument cluster. T his
protects the eng ine from overheating .
The engine speed limitation deactivates once the
engine is no longer in the critica l temperature
range and you have released the acce lerato r ped­
a l once .
18
If the engine spee d limitation was activa ted by
an engine cont rol malfunct ion, the ~ indicator
li ght a lso turns on. Ma ke sure that the speed
does not go above the speed displayed. Dr ive to
an a uthorized Audi dea ler or authori zed Audi
Service Facility immed iate ly to have the ma lfunc ­
t ion corrected .
(D Tips
Applies to: S models
The engine speed is lim ite d w hen t he engine
i s cold -the fu ll engine ou tput is no t av aila ­
b le . When the eng ine is at o perating tem per­
ature, the red area in the tachometer moves
to a h igher R PM range .
~c, Engine oil sensor
• Oil level sensor: system fault!
The sensor to check the eng ine o il level has
f ailed. Drive to an au thori zed A udi dealer or au­
thorized Audi Serv ice Facility immediately to have
the malfunct ion corrected .
f Engine warm -up request
0 Please warm up engine
Fuel has entered the engine oil, eithe r from low
outside temperatures or frequent short d rives.
D rive until the eng ine is warm so that the fuel in
the engine o il w ill evaporate. Avoid hig h engine
speeds, full accelerating a nd heavy engine loads
whe n doing this .
rn Tank system
II) Please refuel
If the indicato r light turns on for the first time
and t he message appears , there are about 2 .6
gallons ( 10 li ters) of f uel left in t he tank .
II) Fuel tank system malfunct ion! Please con­
tact dealer
There is a ma lf u nction in the f uel tank system .
D rive to an au thor ized A udi dealer or au thoriz ed
A udi Se rvice Fac ility immed iate ly to h ave the
malfunction cor rec ted.

Hea d-u p di spl ay> Head- up di spla y conten ts or
Displ ay brigh tn ess.
Di spla y content
In the Infotainment system, you can specify
which information should be displayed: For ex­
ample, th is can include navigation informat ion *,
Adaptive cruise control* or night vision assist*.
The display of certa in info rmation and some of
the red indicator lights cannot be h idden in the
I nfotainment system.
Displ ay brightness
You can adjust the display br ightness in the Info­
tainment system. The display brightness decreas­
es automatically as the amount of light decreas­
es. The backgro und brightness is adjusted with
the instrument il lumination
c::> page 44 .
(D Note
To prevent scratches on the g lass cove ring the
head- up d isplay, do not place any objects in
the projection opening.
(D Tips
- Sunglasses w ith polar izat ion fi lters and u n­
favorab le lighting conditions can have a
negative effect on the display.
- An optim um display depends on the seat
pos ition and the height adjustment of the
head -up display.
- A specia l windshield is needed for the head ­
up display function.
- Fo r information on cleaning, refer to
c::> ta­
ble on page 233.
On Board Diagnostic
System (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Ind icator Lamp (MIL) a in the
instr ument cluster is part of the On-Board Diag­
nostic (OBD II) system.
~ The warning/indicator light i lluminates when the ....
~ ign it ion is switched on and goes ou t after the en-N .... 0 0 <.,;) 'SI"
Driver info rm atio n sys tem
gine starts and the idle has stab ilized. This indi­
cates that the MIL is working properly.
If th e light does not go ou t after the eng ine is
sta rted, or i llum inates while you are driving, a
malfunction may exist in the engine system. If
the light illuminates, the catalytic converter
could be damaged.
Cont inue driving
with redu ced p ower (avoiding
sustained high speeds and/or rapid accelera­
tions) and have the condition corrected. Contact
your authorized Audi dealer.
If the ligh t illum ina tes, the electronic speed lim­
iter may also be malfunctioning. For more infor­
mation
c::> page 26, Electronic speed limiter.
An impro perl y close d fuel fi ller cap may al so
ca use the
MIL li g ht to illuminate c::> page 192.
On-Board Diagnostics
Fig. 14 Locat ion of Data L ink Connector (DLC)
On-Board Diagnostics monitors the components
of your emission control system. Each monitored
component in your engine system has been as­
s igned a code . In case of a malfunction, the com­
ponent will be identified and the fault stored as a
code in the contro l module memory.
T he M IL light may also illum inate if there is a
leak in the on-board fuel vapor recovery system.
If the light i lluminates after a refuelling, stop
the vehicle and make sure the fue l filler cap is
properly closed
c::> page 192.
In order to make an accurate diagnosis, the stor ­
ed data can only be displayed using special diag-
nostic equipment (generic scan tool for OBD).
IJI,-
25

Checking and Filling
These fuel s contain substances that can se ­
verely damage the fue l system and the en­
gine if the engine is started .
Refueling
Fuel filler neck
The fuel fille r neck is located on the r ight rear
side pane l beh ind the f uel fi ller flap.
If the power locking system should fail , you can
still open the flap manua lly - for deta iled instruc­
tions see~
page 194 .
You can find the fuel tank capac ity of your vehicle
i n
~ page 257 .
The label on the inside of the fuel filler flap tells
you the correc t fuel for your vehicle . For more in­
formation about fue l specifications , see
~ page 190 .
Your veh icle fuel t ank has an onboard refuelling
vapor recovery sys tem . This fea tu re he lps to pre­
vent fuel vapors from escaping from the tank and pollut ing the env ironment while you refuel your
ve hicle. In order to fill the tank prope rly while
p rotecting the environment, please fo llow this
re fueling proce dure caref ully.
8_ WARNING
Under no rmal o perating conditions, never car ­
ry additiona l fuel containers in yo ur car. Gas
canisters and ot her containers used to trans­
port fuel can be dangerous . Such containers,
full or empty, may leak and could cause a fire
in a collision . If yo u must t ransport fue l to
use for yo ur lawn mower, snow blower, etc.,
be
very careful and a lways observe loca l and
s tate laws regar ding t he use, transportation
a nd sto rage of s uch fue l conta iners. Make ce r­
t ain the con tainer mee ts in dust ry sta ndards
(A NSI/AS TM F8S 2 - 86) .
(D Note
Never d rive yo ur vehicle unt il t he fuel tan k is
c ompletely empty . T he irregu lar sup ply of
fue l can ca use m isfiri ng. Gasoline cou ld enter
t he exha ust system and damage the catalytic
converter.
192
Fueling procedure
Fi g. 17 4 R ig ht rea r side o f th e ve hicle: ope ning t he fuel
fi ll er door
Fig . 1 75 Fue l fill er doo r w it h at tac hed fu el cap
The fue l filler doo r is u nlocked or locked by the
central locking system .
Opening the fuel cap
" Press on the left side of the fue l filler door to
open
~ fig . 174.
"Unscrew the tank cap co unterclo ckwise .
" Place the cap from
above on the open f uel f iller
door
~ fig. 175 .
Closing the fuel cap
" Scr ew the tank cap on to the right on the filler
neck unt il it ca nnot turn any fart her .
" Then press on the left s ide of the t an k door un-
til it latches.
Once the pump no zzle switches off , t he fuel ta nk
i s "full ". Do not fill the tank mo re . O therwise the
expans io n sp ace in the tan k w ill be filled.
The co rrect fuel type for your vehicle can be
fo und o n a label located on the inside of the f uel
fille r door . Fo r addi tional informat io n on fuel,
see
~ page 190 .

co
co
.... N
" N .... 0 0 <..:l ' The fuel tank capacity of your vehicle is listed in
the
Tech nical D ata s e ction ¢ page 257.
To avoid fuel spill ing or evaporating from the f uel
tank always close fuel cap p roperly and com­
p letely. An improperly closed fue l filler cap may
also cause the MIL lamp
r:!> pag e 25 to come on.
A WARNING
Not paying attention when fueling or han­
dling fuel incorrectly can lead to fires, exp lo­
sions or serious in juries.
- Fuel ignites easily and can cause serious burns and other injuries .
- If you do not switch the eng ine off when fu­
eling and/or do not insert the fuel no zzle
completely into the tank opening, fue l can
leak out or run over . Leaked fuel can ignite
and start a fire .
- Do no t use the telephone while fueling. The
electromagnet ic rays can cause sparks,
wh ich can ignite fuel vapors and start a fire .
- Do not s it in your vehicle while fueling . If
you must make an except ion and enter your
vehicle again wh ile fue ling , close the door
and touch meta l to discha rge static electric­
ity befo re touching the fue l nozzle . Static
electricity can create spar ks, wh ich can ig­
ni te vapors when fue ling.
- Do not smoke or have an open flame i n the
area when fueling your vehicle or filling a
fuel container because this increases the
risk of a n explosion .
- For your safety , carrying fuel containers in
your vehicle is not recommended . Whether
full or empty, the container can leak and cause a fire in the event of an accident.
- If you must make an exception and trans­
port a fuel container, note the following:
- Never fill the fuel containe r with fuel
while it is in or on the vehicle. Stat ic elec­
tr icity is d ischa rged when filling wh ich can
cause the f uel vapors to ignite and in­
creases the risk of an explos ion .
- Always p lace a fuel containe r on the
g round before fi lling .
- Always ho ld the fuel no zzle comp letely in
the fuel container when filling.
Ch eck ing and Filling
-If the fuel container is made of metal, the
fuel nozzle must always be in contact with
the container when filling it with fuel. This prevents stat ic electricity from discharg­
ing .
- Never spill fue l in the vehicle or the lug­
gage compartment. Evaporated fuel is ex ­
plosive and increases the risk of serious in­
ju ry or death .
- Follow legal req uirements when using,
stor ing and transporti ng fuel containers.
- Make sure the fuel container conforms to
industry standards (ANSI/ASTM F852-86).
CD Note
- Remove spilled fuel from vehicle pa int im­
mediately , because it can damage paint.
- Never drive unt il the fuel tank is complete ly
empty. The irregular supply of fue l that re­
sults from that can cause eng ine misfires .
Uncombusted fuel will enter t he exhaust
system and increase the risk of damage to
the catalyti c converter .
CD Note
Applies to: vehicles with diesel engines
If the f uel tank ru ns completely empty, the
i gni tion must remain sw itched on for a t least
30 seco nds after refueling before sta rting the
engine . It may take longer than usua l for the
engine to start, even up to a minute. This is
because the air must first bleed out of the
fuel system when start ing the engine .
@ For the sake of the environment
Do not overfill the fuel tank, otherwise fuel
can leak out when the veh icle is warming up.
(D Tips
The fuel filler door on your vehicle does not l ock if you lock the ve hicle from the ins ide.
(D Tips
Applies to: vehicles with diesel e ngin es
Diesel veh icles are equipped w ith a misfueling
guard
l )_ It a llows the vehicle to be fueled on-
l y w ith a diesel fuel p ump nozzle .
IJJ,,
193

Checking and Filling
& WARNING
AdBlue can irritate the skin, eyes and respira­tory system. If there is contact with the fluid,
flush immediately with plenty of water . Con­
sult a physician if necessary.
(D Note
- Only use Ad Blue that conforms to the
standard ISO 22241 -1. Do not mix any addi ­
tives with the Ad Blue and do not dilute it
with water.
- Do not add Ad Blue to the diesel tank or add diesel fuel to the Ad Blue tank. Do not start
the engine under any circumstances if the
wrong fuel is filled in the tank. There is a
risk of damaging the fuel tank system and
the engine. See an authorized Audi dealer or
authorized Audi Service Facility for assis­
tance.
- AdBlue attacks surfaces such as painted ve­
hicle components, plastic and carpet. Re­
move the fluid as quickly as possible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crystallized, use warm
water and a sponge . AdBlue residue that is
not removed will crystallize and can damage
the affected surface.
- Do not store refill bottles or canisters per ­
manently in the vehicle. If the container
leaks, the escaping AdBlue could damage
the vehicle interior.
- Do not allow AdBlue to come into contact
with clothing. If there is contact with the
fluid , flush immediately with plenty of
wa­
ter.
(j) Tips
Follow the Ad Blue manufacturer 's instruc­
tions for use and storage.
Refilling AdBlue using a bottle
Applies to: vehicles with selective catalytic reduction
... Remove the cap from the refill bottle ¢.&. in
Filling AdBlue on page 196,
c::> (D in Filling
AdBlue on page 196.
196
... Position the bottle on the filler tube and turn
the bottle clockwise until it stops turning.
... Press lightly against the bottom of the bottle
to empty it . Continue pressing the bottom of
the bottle until it is empty or until fluid stops
flowing into the tank .
... Remove the bottle and seal the filler neck
c::> page 197, Completing AdBlue refill.
d) Note
Only use refill bottles that are approved for
your vehicle. Using other systems can cause AdBlue to leak.
(D Tips
- You can obtain refill bottles from an author­
ized Audi dealer or authorized Audi Service
Facility.
- A permitted refill bottle contains approxi­
mately 0.5 gallon (1.9 liters) of AdBlue.
Refilling AdBlue using a canister
Applies to: vehicles with selective catalytic reduction
®
+®
Fig. 179 Canister w ith attachable hose
... Remove the cover from the refill canister c::> .&.
in Filling AdBlue on page 196 , c::>(D in Filling
AdBlue on page 196 .
.,. Secure the end of the hose the canister @by turning the hose to the right.
.,. Remove the cap @from the other end of the
hose @.
... Position the end of the hose @on the filler
neck in the vehicle and turn the hose to the
right to tighten it .
... Lift the canister up and then tip it . Continue
holding the canister in a tipped position until it
1J,,

co
co
.... N
" N .... 0 0 <..:l - is empty or until no more fluid flows into the
tank .
.,. Remove the canister and close the fi ller tube
c:> page 197 , Comple ting AdBlue refill .
CD Note
Only use refi ll canisters that are approved for
your vehicle. Us ing other systems can cause
Ad Blue to leak.
(D Tips
- An authorized Audi dealer or authorized
Audi repair facility can tell you which ref ill
canisters are approved for your vehicle.
- A permitted refill canister conta ins approxi­
mately 1.3 gallons (5 liters) of AdBlue.
Completing AdBlue refill
Applies to: vehicles with selective catalytic reduction
Clo sing the filler nec k
.,. Tu rn the cap on the filler neck to the right with
the wheel wrench until the cap clicks into place.
This t ightens the cap to the specification c::> .&.
in Filling AdBlue on page 196, c:> 0 in Filling
AdBlue on page 196.
.,. The n press on the left side of the tank doo r un-
t il it latches .
After filling
The vehicle must be dr iven so that the system
recognizes that the Ad Bl ue was refilled . Th is can
take severa l m inutes.
.,. If there was no Ad Blue left in the tank and a
range of O mi (0 km) was shown in the display,
switch the ign ition on for about 30 seconds be­
fore starting the engine.
(D Tips
Ad Blue can freeze at very low temperatures.
If th is happens , the system will not detect
that the Ad Blue was refilled and it will contin­
ue to inform yo u of the low Ad B lue level. The
message turns off as soon as the tank thaws
out again .
Ch eck ing and Filling
Catalytic converter
Applies to: vehicles with gasoline engine
It is very important that your emission control
system (cataly tic converter) is functioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner.
.,. Always use lead-free gasoline c:> page 190 , Fuel
supply.
.,. Never run the tank down all the way to empty .
.,. Never put too much motor o il in your engine
c:> page 203, Adding engine oil.
.,. Never try to push- or tow-start your vehicle.
The catalytic co nverter is an efficient "clean -up"
device built into the exhaust system of the ve hi­
cle. The catalyt ic converter b urns many of the
po llutants in the exhaust gas before they are re­
leased into the atmosphere.
The exclusive use of un leaded fuel is cr itically im­
portant for the life of the catalytic converte r and
prope r funct ion ing of the eng ine .
_&. WARNING
The tempera ture of t he exhaus t sys tem is
h igh, bot h when driv ing and a fter stopping
the engine .
- Never tou ch the exhaust tail pipes once they
have become hot. This cou ld resu lt in burns.
- Do not park or operate the vehicle in ar eas
where the hot exhaus t sys tem may come in
contact with dry grass, b rush, fuel spill or
other material which can ca use a fire.
- Do not app ly additiona l undercoating or
r u stp roofing on or near the exhaust mani­
fold, exha ust pipes, cata lytic converter or
heat shields . D uring driving, the substance
used for undercoat ing could overheat and
cause a fire.
CD Note
- Be aware that just one tank fi lling with
leaded fuel w ill already seriously degrade
the performance of the catalytic converter .
- Do not exceed the correct engine oil leve l
c:> page 203.
197

Check ing and F illing
- Do not drive until the fuel tank becomes
complete ly empty . The engine cou ld mis­
fire . Unburned fuel could also get into the
exhaust system and this cou ld cause the
catalytic converter to overheat.
- Do not sw itch off the ignition while the vehi­
cle is moving .
- Do not continue to operate your vehicle un­
der these cond itions, as otherwise fuel can
reach the catalytic converter . This could re­
su lt in overheating of the converter, requ ir­
i ng its replacement .
- To assure efficient operation of the Emis­
sion Control System :
- Have your ve hicle main tained pro perly and
in accordance with the service recommen ­
dations in your Wa rranty & Maintenance
book let.
- Lac k of proper maintenance as well as im ­
proper use of the vehicle will impair the
function of the emission cont rol system
and could lead to damage.
@ For the sake of the environment
Even when the Emission Control System is op­
erat ing properly, the exhaust gas can have a
sulfur-like exhaust gas smell under some op­
erat ing states . This depends on the su lfur
content of the fuel be ing used . Using a differ­
ent brand of fue l may he lp, or filling the tan k
w ith lead-free super grade gasoline.
Diesel particulate filter
A ppl ies to: ve hicles w ith diesel e ng in e
The diesel particulate fi lter filters nearly all of
the soot particles out of the ex haust. The f ilter
cleans i tse lf automatically under normal d riv ing
conditions. If the filte r ca nnot clean itse lf (for e x­
a mple , beca u se you are only driving sho rt distan­
ces), the fi lter becomes clo gged with soot and
the . symbo l for the diesel particulate fi lter il­
lum inates
c:> page 18.
A WARNING
- Do not park you r vehicle over flammable
materials such as grass or leaves because
198 -
the high temperature of the diesel particu­
late filte r could sta rt a fire .
- Do not apply an underbody protectant in the
exhaust system area or a fire could sta rt.
Engine compartment
· Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and fill ing fluids , the re is a risk of in­
jury, scalding, accidents , and burns. For this
reason, follow all the warnings and general
safety precaut ions provided in the following in ·
formation . The engine compartment is a dan­
gerous area on the vehicle.
c:> .&, .
A WARNING
-Turn the engine off.
- S witch t he igni tion off.
- Set the park ing bra ke .
- Select the P s elector lever position.
-Let the eng ine cool down .
- Never open the hood when there is steam o r
coo lant escaping from the engine compart­
ment, because there is a risk that you could
be burned . Wait unt il no steam or coolant is
escaping .
- Keep children away from the eng ine com­
pa rtment .
- Never sp ill fluids on a hot eng ine. These flu­
ids (such as the freeze protection contained
in the coolant) ca n ca tch fire .
- Avoid short c ircuits in the electrical system .
- When working in the engine compa rtment,
remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the r is k of p ersona l injury.
- Never ope n the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling system is under p ressure .
- To protect your face, hands, and arms from ho t steam or coolant, cover the cap with a
large cloth wh en opening .
~