2020 AUDI A6 catalytic converter

4K0012721BD
Checking and Filling

Checking and Filling
Fuel
Types of gasoline
The correct gasoline grade is stated on the inside
of the fuel filler door.
The vehicle is equipped with a catalytic converter
and must only be driven with unleaded gasoline.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
The individual gasoline grades are differentiated
by octane ratings. This value is given with (R
+M)/2 equating to AKI or in RON.
The headings below match the sticker in the fuel
filler door (examples):
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular / MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI /
91 RON > ©.
Audi recommends using premium gasoline with
minimum 91 AKI / 95 RON to achieve the rated
horsepower and torque.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gasoline with minimum 91 AKI /
95 RON is recommended.
If premium gasoline is not available, you can also
use regular gasoline 87 AKI / 91 RON. However
this does reduce the engine power slightly.
() Note
— Filling the tank just one time with leaded
fuel or other metallic additives will cause
permanent deterioration to the catalytic
converter function.
— When gasoline with an octane rating that is
too low is used, high speeds or heavy engine
load can lead to engine damage.
@) Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine.
Gasoline mixture
Gasoline with alcohol or MTBE (Methyl-Tert-
Butyl-Ether)
You can use unleaded gasoline mixed with alco-
hol or MTBE (generally labeled as oxygenated
compounds) as long as the fuel meets the follow-
ing conditions:
Gasoline with methanol content (methyl alco-
hol
or methanol)
— Anti-Knock Index is at least 87 AKI
—No more than 3% methanol
— More than 2% solvent
Gasoline with ethanol content (ethyl alcohol or
ethanol)
— Anti-Knock Index is at least 87 AKI
—No more than 15% ethanol
Gasoline with MTBE content
— Anti-Knock Index is at least 87 AKI
—No more than 15% MTBE
Gasoline adapted to the season
Many gasoline fuels are adapted to the seasons.
When the season changes, we recommend refu-
eling at high-traffic gas stations. It is more likely
that the gasoline will be suitable for the season
there.
() Note
— Gasoline with methanol content that does
not meet the specified conditions may cause
corrosion damage and damage to plastic or
rubber components in the fuel system.
— Do not use gasoline that does not meet the
specifications.
— If you are unable to find out if a specific gas-
oline mixture meets the specifications, ask
the gas station operator or their fuel suppli-
er.
227
>

4K0012721BD
Checking and Filling

The correct fuel type for your vehicle can be
found ona label located on the inside of the fuel
filler door. For additional information on fuel, see
=> page 227.
For the tank capacity in your vehicle, refer to the
Technical Data > page 299.
To reduce the risk of fuel leaking out or vapors
escaping, make sure that the fuel tank is closed
correctly. Otherwise the Ey indicator light will
turn on.
If the central locking system malfunctions, there
is a fuel filler door emergency release
=> page 230.
Messages
FAY Tank system: malfunction! Please contact
Service
There is a malfunction in the fuel tank system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.

flying sparks. Sparks can start a fire when
refueling.


Z\ WARNING
Improper fueling procedures and improper
handling of fuel can lead to explosions, fires,
severe burns, and other injuries.
— Do not smoke. Keep away from open flames.
— The ignition must be switched off when re-
fueling.
— Mobile devices, radio devices, and other ra-
dio equipment should always be switched
off when refueling. Electromagnetic rays
could cause sparks and start a fire.
— If you do not insert the fuel pump nozzle all
the way into the filler tube, then fuel can
leak out. Spilled fuel can ignite and start a
fire.
— Never get into the vehicle when refueling. If
there is an exceptional situation where you
must enter the vehicle, close the door and
touch a metal surface before touching the
fuel pump nozzle again. This will reduce the
risk of electrostatic discharge that can cause


A WARNING
Transporting fuel containers inside the vehicle
is not recommended. Fuel could leak out of
the container and ignite, especially during an
accident. This can cause explosions, fires, and
injuries.
— Ifyou must transport fuel in a fuel contain-
er, note the following:
— Always place the fuel container on the
ground before filling. Never fill the fuel
container with fuel while it is inside or on
the vehicle. Electrostatic discharge can oc-
cur while refueling and the fuel vapors
could ignite.
— When using fuel containers made of met-
al, the fuel pump nozzle must always re-
main in contact with the container to re-
duce the risk of static charge.
— Insert the fuel pump nozzle as far as pos-
sible into the filler opening while refuel-
ing.
— Follow the applicable legal regulations in
the country where you are driving when
using, storing and transporting fuel con-
tainers.
— Make sure that the fuel container meets
the industry standards, for example ANSI
or ASTM F852-86.



) Depending on the engine and country
@) Note
— Remove fuel that has overflowed onto any
vehicle
components immediately to reduce
the risk of damage to the vehicle.
— Never drive until the fuel tank is completely
empty. The irregular supply of fuel that re-
sults from that can cause engine misfires.
Uncombusted fuel may enter the exhaust
system and increase the risk of damage to
the catalytic converter.
229

4K0012721BD
Checking and Filling


the high temperature of the emissions sys-
tem could start a fire.
— Do not apply underbody protectant in the
exhaust system area, because this increases
the risk of fire.
Catalytic converter
Follow the safety precautions > page 230, Gener-
al information.


The vehicle may only be driven with unleaded
gasoline, or the catalytic converter will be de-
stroyed.
Never drive until the tank is completely empty.
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel
could enter the exhaust system, which could
cause overheating and damage to the catalytic
converter.
Malfunction Indicator Lamp (MIL)
If the S indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con-
verter. Drive slowly to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction corrected.
The indicator light can also turn on if the fuel fill-
er cap is not closed correctly > page 228).
Engine compartment
(er eel lacela)
Special care is required if you are working in the
engine compartment
When performing work in the engine compart-
ment, such as checking and filling fluids, there
is a risk of injury, scalding, accidents, and
burns. For this reason, follow all the warnings
and general safety precautions provided in the
following information. The engine compart-
ment is a dangerous area in the vehicle. > A\.

) Depending on the engine and country

ZA WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the freeze protection contain
in the coolant) can catch fire.
ed
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolan
escaping.
tis
— The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
—To protect your face, hands, and arms fro m
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under an
circumstances. This increases the risk of
burns.
y
— Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition syste
when the engine is running or is starting.
m
— Ifa gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
— If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.

231

4K0012721BD
Checking and Filling


Audi recommends
Sbastrol | ZIDIGE Prarzssional
Audi recommends using the LongLife high-per-
formance engine oil from Audi Genuine Parts.
I Tet
Engine oil pressure


i Turn off engine. Oil pressure too low
Stop driving and switch the engine off. Check the
engine oil level > page 235.
— If the engine oil level is too low, add engine oil
=> page 236. Only continue driving once the in-
dicator light turns off.
— If the engine oil level is correct and the indica-
tor light still turns on, turn the engine off and
do not continue driving. See an authorized Audi
dealer or authorized Audi Service Facility for as-
sistance.
Engine oil level
& Please add oil immediately
Stop driving and switch the engine off. Check the
engine oil level > page 235 and add engine oil
immediately > page 236.
2 Please add max. x qt (x l) oil. You can con-
tinue driving
Add the amount of oil shown immediately
=> page 236.
Reducing the oil level
A Please reduce oil level
There is too much oil in the engine and there is a
risk of damaging the catalytic converter or en-
gine. Drive to an authorized Audi dealer or au-
thorized Audi Service Facility immediately to have
engine oil extracted if necessary. Avoid high en-
gine speeds, full acceleration, and heavy engine
loads.
Engine oil sensor
Bs Oil level sensor: oil change necessary. Please
contact Service
Fuel has entered the engine oil. This will cause
the engine oil level to rise slowly and the engine
oil quality to decrease. Do not extract engine oil
to reduce the level, because this will increase the
risk of engine damage. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately to have engine oil extracted.
& Oil level system: malfunction! Please con-
tact Service
The sensor that checks the engine oil level has
malfunctioned. Drive immediately to an author-
ized Audi dealer or authorized Audi Service Facili-
ty to have the malfunction repaired.
& Oil pressure sensor: malfunction! Please
contact Service
The sensor that checks the engine oil pressure
has malfunctioned. Drive immediately to an au-
thorized Audi dealer or authorized Audi Service
Facility to have the malfunction repaired.
Engine warm-up request
i Please drive to warm up engine
Fuel has entered the engine oil, either due to low
outside temperatures or frequent short drives.
Drive until the engine is warm so that the fuel in
the engine oil will evaporate. Avoid high engine
speeds, full accelerating, and heavy engine loads
when doing this.
G@) Tips
The oil pressure warning =} is not an oil level
indicator. Always check the oil level regularly.
Checking the engine oil level
The engine oil level can be checked in the MMI.
Follow the safety precautions > A\ in General in-
formation on page 231.
>» Park the vehicle on a level surface.
> Shut the engine off when it is warm.
> Switch only the ignition back on.
> Wait approximately two minutes.
> Applies to: MMI: Select on the home screen:
VEHICLE > Settings & Service > Oil level.
> Read the oil level in the display. Add engine oil
if the bar in the oil level indicator is just below
“min” > page 236.
235
>

4K0012721BD

Fuses and bulbs


This can cause damage to the electrical sys-
tem and increases the risk of fire.

Fuse panel (@) (black)


C) Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty:
G@) Tips
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.
Fuse assignment - left footwell
RAZ-0195
ay
WOlLOINI
DI
M)WIN|
kr
i
Toren
BARRIER P ala


Fig. 184 Left footwell: fuse panel with plastic clip
The fuse assignment @) and @) is in the opposite
order on right-hand drive vehicles.
4 |Engine components

Brake light sensor

Engine valves

Engine components

Engine components

WOl/OINI
Aun
Engine components

10 | Oil pressure sensor, oil temperature sensor

11 | Engine components

12 | Engine components

13 | Engine cooling

14 | Engine control module, fuel injectors

15 | Engine sensors

16 | Fuel pump

Fuse panel @ (red)

z ° . | Equipment

Anti-theft alarm system

Engine control module

Left front lumbar support

Horn

Parking brake

Gateway control module (diagnosis)

Roof electronics control module

Driver assistance systems control module

BR o Airbag control module

Electronic Stabilization Control (ESC), An-
i
ti-Lock Braking System (ABS)

12 | Diagnostic connector, light/rain sensor

13 | Climate control system

14 | Right front door control module

Climate control system compressor, body
15 .
electronics

Auxiliary battery control module, brake
16 .
system pressure reservoir

Fuse panel (8) (red)


Fuse panel (@) (black)
No. | Equipment

No. | Equipment

Engine ignition coils

Catalytic converter heating High-voltage heating, compressor

2 |Engine components


Engine mount


Engine components

A)
m\/
wir
Automatic transmission

285

4K0012721BD

BlOWe rs scicies wo cures oo ceevte a x sousnne ow cumaee oo 3 89
Bluetooth
Audio player...........-.0 00.20 e ee eee 210
Connecting acell phone............... 164
Deleting adevice................0000- 225
Deviceoverview wi... enn eenie ee eee 224
Disconnecting a device................ 225
Displayitig( Profiles « sass 2 2 ews s x eenos ¢ os 225
Searching foradevice...............-. 225
Selecting adevice.............0.-000. 225
Specifying a favorite..............000. 225
BOOStiy + sewn 3 = wom 2 2 woe & E lomme + d ewe ge 16
Boost pressure indicator................. 16
Brake fluid
Checking the brake fluid level........... 240
BrakeSicx « sawy « 5 see: & 2 Semis = fates 6 2 ee 102
Braketassist wes so saws os ence vv ome as L112
Brake fluid... 2... 66... eee eee eee eee 240
Emergency braking function............ 105
HOtiin oe asco a x masa a & asses aw aamunes 4 & amerens 105
New brake pads..............2-000004 103
Break-in security feature..............0.- 35
Breaking in
New brake pads.........- 0.0 eee eee 103
N@WtIRGS:: « ean ss nee oo RomH ob eR a ge 252
Browser
refer to Media center.................. 214
Bulb replacement............--0000-00- 288
Business address........... 0000 cee eene 194
Cc
California Proposition 65 Warning........ 232
Battery ’specific:. = 2 cssvs se sewn eo wewe 2 os 241
GalLLUSt cess. = » season 2 & cease © 3 ewe © oe 168, 170
CamenaSiccg + een a + eeu ok RONe ao eR og 119
LOCATIONS an 6s sees ¥ sraaem se meee 39 amu 6 y 120
Capacities
Fuclitambe, scansise + + axnsons 0 « snnuece 0 ctemem 0 0 on 299
Washer fluid reservoir................. 299
Cargo floor......... ee eee eee ee 86
Cargo net... .. cece eee eee 85
Car key... cece eee eee 36
Car phone
Serial number (IMEI) .................. 174
SWItCHING OM sis & & suies x @ ees ¥ 2 eis + ¥ os 174
Carwash y « wesc «2 eee & eae 2 3 Heme eK Rene 266
Catalytic converter’. seca es ence oo mevee ov oe 231
Cell phone
refer to Telephone...............2000. 164
Cell phone compartment
refer to Audi phone box............... 166
Central locking.................0- esse ee 32
AUTO! LOCK: sees: 2 = yee 5 s een 5 ¢ owes + BES 32
Convenience key sussex saws x amma oo mere « 37
Convenience opening and closing......... 44
Luggage compartment lid............... 39
Mechanically unlocking and locking....... 35
Messages ......... 00... eee eee eee 34
Remote control key........-eseeceeveee 37
SOTUING's ecco o wou 3 x asm 2 soemres oo cme 33
WERICLS Key, sseseiss « or ssemeie » excitons i = meats wo stoutens 37
Central locking switch................50. 34
Geramic brakes «0 sescaes + + ensues + 2 emcee a 6 om 103
Certifications 2 swoon 2a cass «eames wo neon 296
Changing light bulbs................... 288
Charging
refer to Power sourceS...... 0.0.00 ee eee 80
Charging the battery (mobile devices). 166, 212
Child safety lock
Climate control system controls in the rear. 43
Power windows...........00000 eee eens 43
Rear dOOrsi: « ¢ sews 9 a aman a 2 mame a a mewe & 43
Child safety seats ..... 0.0... cee cece eee ee 73
Securing to the top tether anchor........ 78
Securing with a safety belt.............. 76
Securing with LATCH..............20065 76
Cleaning ...... 0... cee eee eee eee eee 266
Cleaning Alcantara...............00000) 269
Cleaning artificial leather............0.. 269
Cleaning carbon components........ 268, 269
Cleaning controls . csces cs sews ae eee ve ess 269
Cleaning decorative parts/trim........... 268
Cleaning exhaust tail pipes.............. 268
Cleaning plastic parts.................. 268
Cleaning textiles................0.000. 269
Climate control system..............0005 88
Climate control system controls in the rear
Child safety lO¢K eenex ¢ 2 seus : » ewes ce ees 43
Closing
Automatic luggage compartment lid...... 40
Convenience closing................0-5 44
Hood. ..... ee ee eee eee 232
301