2016 AUDI A6 catalytic converter

Driver's and front passenger 's footwell . . 130
Pe dal area . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Sto ring cargo correctly . . . . . . . . . . . . . . . 131
Repo rting Safety Defects . . . . . . . . . . . . . . 132
Safety belts . . . . . . . . . . . . . . . . . . . . . . 134
Gene ral information . . . . . . . . . . . . . . . . . 134
Why use safety belts? . . . . . . . . . . . . . . . . 135
Safety belts . . . . . . . . . . . . . . . . . . . . . . . . 137
Belt tens ione rs . . . . . . . . . . . . . . . . . . . . . . 140
Airbag system . . . . . . . . . . . . . . . . . . . . 142
Important information . . . . . . . . . . . . . . . 142
F ront ai rbags . . . . . . . . . . . . . . . . . . . . . . . 146
M oni toring the Advanced Airbag Syst em . 153
K nee ai rbags . . . . . . . . . . . . . . . . . . . . . . . . 158
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 160
Side curtai n airbags . . . . . . . . . . . . . . . . . . 163
Child safety . . . . . . . . . . . . . . . . . . . . . . 166
I mportant inform ation . . . . . . . . . . . . . . . 166
C hil d seats . . . . . . . . . . . . . . . . . . . . . . . . . 17 2
Securing ch ild seats . . . . . . . . . . . . . . . . . . 176
LATCH system (Lower anchorages and
tethers for children) . . . . . . . . . . . . . . . . . 179
Addit ional information
183
Audi pre sense . . . . . . . . . . . . . . . . . . . 184
Preventative passenger protection 184
Driver messages . . . . . . . . . . . . . . . . . 186
Intelligent Technology . . . . . . . . . . 186
Not ice about data recorded by the Event
Data Recorde r and vehicle control
modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
E lect ronic Stabili zat ion Control ( ESC) . . . . 187
Bra king . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
E le ctr omech anica l steer ing, dynam ic
steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
A ll whee l drive (q uattro) . . . . . . . . . . . . . . 19 1
Ene rgy management . . . . . . . . . . . . . . . . . 192
Driving and the environment . . . . 194
Breaking in . . . . . . . . . . . . . . . . . . . . . . . . . 194
Avoid damaging the vehicle . . . . . . . . . . . 194
Driving throug h wate r on roads . . . . . . . . 194
Catalytic converter . . . . . . . . . . . . . . . . . . . 195
D iese l part iculate filte r . . . . . . . . . . . . . . . 196
Table of contents
Plac ing you r vehicle out of serv ice . . . . . . 196
Econ om ica l and envi ronmenta lly-friend ly
driv ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Trailer mode . . . . . . . . . . . . . . . . . . . . . 199
Driving with a trai ler . . . . . . . . . . . . . . . . . 199
Trailer mode notes .. ............... .. 201
Operating instructions . . . . . . . . . . . 203
Care and cleaning . . . . . . . . . . . . . . . . 203
Genera l information . . . . . . . . . . . . . . . . . 203
Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 203
Cleaning and care informat ion 204
Fuel and Refueling . . . . . . . . . . . . . . . 208
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Diesel f uel . . . . . . . . . . . . . . . . . . . . . . . . . 209
Refue ling ... .. .. .. .... ...... ... .. .. 210
Se lective cata lytic red uction 212
Checking and Filling . . . . . . . . . . . . . 216
Hood ..... .... .. ................. .. 216
En gine compartment ............. .. .. 218
En gine oi l . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Cooling sys tem . . . . . . . . . . . . . . . . . . . . . . 2 22
Brake fl uid . . . . . . . . . . . . . . . . . . . . . . . . . 225
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Windsh ield/headlight washer container 229
Wheels .. .. .. .. .. ... .. ..... ... .. .. 231
Whee ls and Tires . . . . . . . . . . . . . . . . . . . . 231
Tire p ressure monitoring system
249
Troubleshooting . . . . . . . . . . . . . . . . . 251
Emergency assistance . . . . . . . . . . . 251
Trunk escape handle . . . . . . . . . . . . . . . . . 251
War ning t riang le . . . . . . . . . . . . . . . . . . . . 251
Vehicle tool ki t . . . . . . . . . . . . . . . . . . . . . . 251
Replacing w heels . . . . . . . . . . . . . . . . . . . . 253
Fuses .......... .. ................. 259
Replacing fuses . . . . . . . . . . . . . . . . . . . . . 259
D rive r side cockpit fuse assignmen t
F ront passenge r sid e co ckpit fuse 2
60
ass ignment . . . . . . . . . . . . . . . . . . . . . . . . 2 61
L uggage compartment fuse assignment . 261
3

-Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment. You
could burn yourself. Let the engine cool off
first until you can no longer see or hear steam or coolant escap ing .
Q) Note
-Mounting additional lights or accessories in
front of the air inlets reduces the cooling ef­
fect of the radiator. At h igh outside temper­
atures or h igh engine load, the engine cou ld
ove rheat.
- The front spoiler has been designed to prop­
erly distribute the cooling air when the veh i­
cle is moving.
If the spoiler is damaged, this
could red uce the cooling effect and the en­
gine could then overheat . Ask your author ­
ized Audi dealer for assistance.
Tachometer
The tachometer displays the engine speed in rev­
olutions per minute (RPM).
You shou ld shift to the next lowest gear when
the speed is below 1500 RPM. The beginning of
the red zone in the tachometer indicates the maximum permissib le engine speed for all gears
once the engine has been broken in and when it is
warmed up to operating temperature. Before reaching the red zone, you should shift into the
next h igher gear, choose the Dor S selector lever
position, or remove your foot from the accelera ­
tor pedal.
CD Note
The tachometer needle© c::> page 10, fig. 3
should only be in the red zone br iefly: other­
w ise, this increases the risk of e ngine dam-
age. The location where the red zo ne begins
varies depend ing on the eng ine.
@, For the sake of the environment
Upshifting early helps you to save fuel and re­
duce operating noise.
In strum ents an d ind ic a to r ligh ts
Fuel level
The fue l gauge only works when the ignition is
on.
If t h e fue l level drops below 2.6 gallons (10
lite rs), the bottom LED turns red and the indica­
tor light
t]J turns on c::> page 21. The bottom
LED blinks red when the fue l level is very low.
T he possible range based on the c urrent fue l lev­
el is shown in tab@c::>
page 23, fig . 4 .
Fo r the tank capacity in your veh icle, refer to the
T echn ica l Data c::>
page 2 71.
CD Note
Never drive until the tank is completely emp­
ty. The irregu la r supply of fuel that resu lts
from that can cause t he engine to m isfire. Un­
combusted f uel w ill then en ter the exha ust
system . This can cause ove rheating and dam­
age to the catalytic converter.
Indicator lights
Description
T he ind icator lights in the instrument cluster
blink or turn on. They i ndicate functions o r mal­
funct ions c::>
.&,.
Messages may appear with some ind icator lights.
A war ning s ignal will sound at the same time.
T he ind icator lights and messages in the ce nte r
of the disp lays may be replaced by other displays.
T o s how them again, select the tab for indicator
li gh ts and messages using the m ultifunction
steering wheel c::>
page 23. If there are several
malfunctions, you can display them one at a time
us ing the thumbwheel.
Some indicators lights in the display can t urn on
in several colors.
A WARNING
- Fai lure to heed wa rning lights and other im­
portant vehicle information may result in
serious personal injury or vehicle damage.
- Whenever stalled or stopped for repair,
move the vehicle a safe d istance off the
road, stop the engine, and turn on the
emergency flasher c::>
page 47.
11

Instruments and indicator lights
Display content
In the Infotainment system, you can specify
which information should be displayed: For ex­
ample, this can include navigation information *,
Adapt ive cruise control* or night vision assist* .
The display of certai n in formation and some of
the red indicator lig hts cannot be hidden in the
Infotainment system.
Display brightness
You can adjust the display brightness in the Info­
tainment system. The display brightness decreas­
es automatically as the amount of light decreas­
es. The basic level of brightness is adjusted with
the instrument illumination¢
page 48.
(D Note
To prevent scratches on the glass covering the
Head-up display, do not place any objects in
the projection opening.
@ Tips
-Sunglasses with polarization filt ers and un­
favorable lighting conditions can affect the
display.
- An optim um display depends on the seat
position and the height adjustment of the
head-up display.
- A specia l windshield is needed for the head­
up display function.
- F or informat ion on cleaning, refer to
c::;;, ta­
ble on page
205.
On Board Diagnostic
System (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) ¢..ifi in the
instrument cluster is part of the On-Board Diag­
nostic (OBD II) system .
The warning/indicator light illuminates when the
ignit ion is switched on and goes out after the en ­
gine starts and the idle has stabilized . This indi­
cates that the MIL is working properly.
If the light does not go out after the engine is
started, or illuminates wh ile you are driving, a
28
malfunction may exist in the engine system. If
the light illuminates, the catalytic converter
could be damaged.
Continue driving
with reduced power (avoiding
sustained high speeds and/or rapid accelera­
tions) and have the condition corrected . Contact
your authorized Audi dea ler.
If t he light illuminates, the electronic speed lim­
iter may also be ma lfunctioning. For more infor­
mation ¢
page 29, Electronic speed limiter.
An improperly closed fuel filler cap may also
cause the MIL light to illuminate
c::;;, page 210.
On-Board Diagnostics
Fig. 16 Loca tion of Data Link Connector (DLC)
On-Boa rd Diagnostics monitors the components
of your emission control system. Each monitored
component in your engine system has been as­
s ig ned a code . In case o f a malfunct ion, the com­
pon ent will be identified and the fault stored as a
code in the contro l module memory.
The MIL light may also illum inate if there is a
leak in the on-boa rd fuel vapor recovery system.
If the light illuminates after a refuelling, stop
the vehicle and make sure the fuel filler cap is properly closed
c::;;, page 210.
In order to make an accu rate diagnosis, the stor­
ed data can only be displayed using special diag­
nostic equipment (generic scan tool for OBD) .
In order to connect the special diagnostic equip­
ment, push the plug into the Data Link Connector
(DLC). The DLC is located to the right of the hood
release r:!>
fig. 16. ..,.

.... N
0 CJ ' M I.Cl ......
When the vehicle is stationary or at speeds below 1 mph (2 km/h), you must always app ly the foot­
brake before and while moving the lever out of N.
DIS -Normal position for driving forward
In the D/S position, the transmission can be op­
e rated either in the no rmal mode Dor in the
sport mode S. To select the sport mode S, pull
the selector lever back briefly. Pu lling the lever
back again will select the normal mode D . The in­
strument cluster display shows the selected driv­
ing mode .
In the
normal mode D, the transmission auto ­
matica lly selects the suitable gear ratio. It de­
pends on engine load, vehicle speed and driving
style .
Select the
sport mode S for sporty driving. The
vehicle makes full use of the engine's power.
Shifting may become noticeable when accelerat­
ing.
When the vehicle is stationary or at speeds below 1 mph (2 km/h), you must always app ly the foot
brake before and while moving the lever to D/S
out of N.
A WARNING
Read and follow all WARNINGS¢&. in Driv­
ing the automatic transmission on
page 108.
(D Note
Coasting downhill w ith the transm iss ion in N
and the engine not running will result in dam­
age to the automatic transmission and poss i­
bly the catalytic converter.
@ Tips
-Audi drive select: you can adjust the sporty sh ift characteristics in the
Dynamic driving
mode.Sw ill appea r in the instrument clus­
ter display instead of D.
- If you accidentally select N while driving,
take your foot off the accelerator pedal im­
mediately and wait for the engine to slow
down to idle before selecting 0/5.
Automatic transmission
-If there is a power failure, the selector lever
wi ll not move out of the P position. The
emergency re lease can be used if t his hap­
pens
¢ page 112.
Selector lever lock
The selector lever lock prevents you from select­
ing a gear accidentally, causing the vehicle to
roll.
)
Fig . 11 6 Selector lever lock
To release the se lector lever lock:
" Switch the ignition on.
" Press the brake pedal
while pressing the inter-
lock button .
Automatic shift lock (ASL)
The selector lever is locked in the P and N posi­
tions when the ignition is switched on. The re­
move it from t hese positions, the driver must
press the brake pedal and press the lock button
at the same time. The following message ap­
pears in the instrument cluster display when the
selector lever is in the P or N position to remind
the driver:
Brake pedal must be applied to shift from P
The Automatic Shift Lock only functions when the
vehicle is stat ionary or at speeds below 1 mph
(2 km/h) . At speeds above about 1 mph (2 km/h)
the Automatic Shift Lock is automatically deacti­
vated in the N position .
The selector lever is not locked when shift ing
quickly through N, for example from R to D. This
makes it possible to free the vehicle when it is
stuck by "rocking" it. Th e selector lever lock en-
gages if the leve r stays in the N position longer ...
107

CD Note
-Vehicle components such as the engine,
transmission, suspension or electrical sys­
tem can be severely damaged by driving
through water.
- Always switch the Start-Stop-System* off
when driving through water
9 page 79.
@ Tips
- Determine the depth before driving through
water.
- Do not stop the vehicle, drive in reverse or
switch the engine off when driving through
water.
- Keep in mind that oncoming vehicles may
create waves that raise the water level and
make it too deep for your vehicle to drive
through safely.
-Avoid driving through salt water (corrosion).
Catalytic converter
Applies to vehicles: with gasoline engine
It is very important that your emission control
system (catalytic converter) is functioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner .
... Always use lead-free gasoline 9 page 208,
Fuel supply.
... Never run the tank down all the way to empty.
.,. Never put too much motor oil in your engine
9 page 220, Adding engine oil~-
.,. Never try to push- or tow-start your vehicle.
The catalytic converter is an efficient "clean-up"
device built into the exhaust system of the vehi­
cle. The catalytic converter burns many of the
pollutants in the exhaust gas before they are re­
leased into the atmosphere.
The exclusive use of unleaded fuel is critically im­
portant for the life of the catalytic converter and
proper functioning of the engine.
A WARNING
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
Driving and the environment
- Never touch the exhaust tail pipes once they
have become hot. This could result in burns.
- Do not park or operate the vehicle in areas
where the hot exhaust system may come in contact with dry grass, brush, fuel spill or
other material which can cause a fire.
- Do not apply additional undercoating or
rustproofing on or near the exhaust mani­
fold, exhaust pipes, catalytic converter or heat shields. During driving, the substance
used for undercoating could overheat and
cause a fire.
CD Note
- Be aware that just one tank filling with
leaded fuel will already seriously degrade
the performance of the catalytic converter .
- Do not exceed the correct engine oil level
9page220.
- Do not drive until the fuel tank becomes
completely empty . The engine could mis­
fire. Unburned fuel could also get into the
exhaust system and this could cause the
catalytic converter to overheat.
- Do not switch off the ignition while the vehi­
cle is moving.
- Do not continue to operate your vehicle un­
der these conditions, as otherwise fuel can
reach the catalytic converter. This could re­
sult in overheating of the converter, requir­
ing its replacement .
- To assure efficient operation of the Emis­
sion Control System:
- Have your vehicle maintained properly and
in accordance with the service recommen­
dations in your Warranty
& Maintenance
booklet.
- Lack of proper maintenance as well as im­
proper use of the vehicle will impair the
function of the emission control system
and could lead to damage.
@ For the sake of the environment
Even when the Emission Control System is op­
erating properly, the exhaust gas can have a
sulfur-like exhaust gas smell under some op­
erating states. This depends on the sulfur
195

Fuel and Refueling
Fuel and Refueling
Gasoline
Fuel supply
Applies to vehicles: with gaso li ne engine
Using the right fuel helps keep the environment
clean and prevents engine damage.
Fuel recommendation
The fuel recommended for your vehicle is unlead­
ed premium
grade gasoline . Audi recommends
using TOP TIER Detergent Gasoline with a mini­
mum octane rating of 91 AKI (95 RON). For more
information on TOP TIER Detergent Gasoline,
p lea se go to the offic ial website
(www.toptiergas .com).
The recommended gasoline octane rating for
your engine can also be found on a label located
on the ins ide of the fuel filler flap . This rating
may be specified as AKI or RON.
Your vehicle may also be operated using unlead­
ed regular gasoline with a minimum octane rat­
ing of 87 AKl/91 RON . However, using 87 AKI/91
RON octane fuel wil l slightly reduce engine per­
formance.
Use unleaded gasoline only. Unleaded gasoline
is availab le throughout the USA, Canada, and in
most European countries . We recommend that
you do not take your vehicle to areas or countries
where un leaded gaso line may not be available.
For more information on refueling your vehicle,
see
¢page 210.
Octane rating
Octane rating indicates a gasoline's ability to re­
sist engine damaging "knock" caused by prema­
ture ignit ion and detonation . Therefore, buying
the correct grade of gasoline is very important to
he lp prevent possible engine damage and a loss
of eng ine performance.
Gasoline most commonly used in the United
States and Canada has the following octane rat­
i n gs that can usually be found on the filler pump:
- Premium Grade: 91 - 96 AKI
208
- Regular Grade: 87 - 90 AKI
Explanation of the abbreviations:
AKI = Anti Knock Index = (R +M)/2 = (RON +MON)/
2
RON = Research Octane Number
MON= Motor Octane Number.
{[) Note
-Do not use any fuel with octane ratings low­
er than 87 AKI or 91 RON otherwise expen­
sive engine damage wi ll occur .
- Do
not use leaded gasoline. The use of lead­
ed gasoline will severely damage your vehi­
cle's catalytic converter and its ability to
control exhaust emissions .
Blended gasoline
Applies to vehicles: with gasoline engine
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al­
cohol or MTBE (commonly referred to as oxygen ­
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
-Anti -knock index must be 87 AKI or h igher.
- Blend must contain no more than 3% metha-
nol.
- Blend must contain more than 2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
- Anti-knock index must be 87 AKI or h igher .
- Blend must not contain more than 15% etha-
nol.
Blend of gasoline and MTBE
-Anti-knock index must be 87 AK I or higher .
- Blend must contain not mo re than 1S% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iv ing . Dur-
i ng seasonal change-over, we suggest that you .,..

Fuel and Refueling
These fuels 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 fill er neck is located on the right rear
side panel beh ind the fuel fil ler flap.
If the power locking system should fail , you can
still open the flap manually - for detailed instruc­
tions see ¢
page 212.
You can find the fuel tank capacity of your vehicle
i n
¢ page 271 .
The label on the inside of the fuel filler flap tells
you the correc t fuel for you r vehicle . For more in­
formation about fuel specifications , see
¢ page 208 .
Your vehicle fuel t ank has an onboard refuelling
vapor recovery system . This fea tu re helps to pre­
vent fuel vapors from escaping from the tank and
polluting the environment while you refuel your
vehicle. In order to fill the tank properly while
protecting the environment, please fo llow this
refueling procedure carefully.
8_ WARNING
Under normal operating conditions, never car­
ry additiona l fuel containers in your car. Gas
canisters and other 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 you must transport fuel to
use for your lawn mower, snow blower, etc.,
be
very careful and always observe local and
state laws regard ing the use, transportation
and storage of such fuel containers. Make cer­
tain the container meets industry standards
(ANSI/ASTM F852 -86).
(D Note
Never drive your vehicle until the fuel tank is
completely empty. T he irregular supply of
fue l can cause m isfiring. Gasoline could enter
the exhaust system and damage the catalytic
converter.
210
Refuelling
Fig. 178 Righ t re ar v ehicl e side : O penin g the fuel fill er flap
Fig. 179 Fuel fille r flap w it h att ach ed fuel c ap
When act iv a ting the central locking, the fuel fill­
er flap is automatically unlocked or locked. Re ­
fuel the veh icle with the ignition switched
off.
Taking the fuel cap off
.. Press the left s ide of the fuel filler flap to open
i t ¢
fig. 178 -arrow-.
.. Unscrew fuel filler cap counter-clockwise and
hang it on the fuel filler flap~
fig. 179.
.. Check the label on the inside of the fuel filler
flap to determine if the vehicle must be fueled
w ith gasoline or diesel fuel.
Refuelling procedure
.. Insert the fuel nozzle from the gasoline pump
into the fuel filler neck as far as it will go .
.. Select a med ium refuelling rate so that the
nozz le switches off automatica lly when the
tank is full.
Putting the fuel cap back on
.. After filling your tank, twist the fuel filler cap
clockw ise as far as it will go .
.. Close the fuel filler flap.

Fuel and Refueling
case, try turning the nozzle before inserting
it in the fuel fi ller neck, use a different fue l
pump or see your authorized Audi dea ler or
authorized repair facility for ass istance.
- The fuel filler flap of your vehicle is not
locked when you lock the vehicle from the
inside.
Fuel filler door emergency release
If the central locking system is faulty, the fuel
filler door can be unlocked manually.
F ig. 180 Right side t rim in the luggage compartme nt: re ·
m ov ing the trim
Fig. 181 Luggage co mpa rtment: Fue l filler door emergen­
cy release
Removing the side trim
• To remove the right side trim, first remove the
retainer from the mounts @¢
fig. 180.
• Turn both locking mechanisms 90° to the left
usi ng a coin or a similar object and remove the
locking mechanisms.
• Tilt the retainer upward and pull the trim out.
Lay the trim down on its side, because there is
an electrical wire for the socket * on the back.
212
Fuel filler door emergency release
• Loosen the strap from its bracket and pull on it
r:!.>fig. 181 ¢(2) . You can now open the fuel fill­
er door as usual ¢
page 210.
(D Note
Only pull on the loop until you feel resistance .
You wi ll not hear it release . Otherwise you
could damage the emergency release mecha­ nism.
Selective catalytic reduction
General information
Applies to vehicles: with selective catalytic reduction
In vehicles with selective catalytic reduction, a
urea solution (AdBlue) is injected into the ex­
haust system before a nitrogen oxide catalytic
converter to reduce nitrogen emissions.
The Ad Blue is carried in a separate tank in the ve ­
hicle. The AdBlue usage accounts for approxi­
mately 0.5% to 2.5% of the diesel fuel that is
used.
When a message about refilling the AdBlue ap­
pears in the instrument cluster display, you must
refill the Ad Blue yourself or have it refilled by an
authorized Audi dealer or authorized Audi Service
Facility
r:!.>page 213 .
{!) Tips
-The instrument cluster display ind icates the
distance remaining that can be driven
¢ page 213. If the AdBlue tank is com­
pletely empty, the engine will not start
again after the ign ition is switched off.
- Ad Blue is required by law to operate th is ve­
hicle.