2020 AUDI A4 catalytic converter

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.
210
G) 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.

Checking and Filling

> Turn the fuel cap clockwise until it clicks into
place.
> Close the fuel filler door and then press on the
left side until it latches.
The correct fuel type for your vehicle can be
found on a label located on the inside of the fuel
filler door. For additional information on fuel, see
=> page 210.
For the tank capacity in your vehicle, refer to the
Technical Data > page 278.
To reduce the risk of fuel leaking out or vapors
escaping, make sure that the fuel tank is closed
correctly. Otherwise the [gg indicator light will
turn on.
If the central locking system malfunctions, there
is a fuel filler door emergency release
=> page 213.


ZA\ 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
flying sparks. Sparks can start a fire when
refueling.


Z\ 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.
— If you 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.



1) Depending on the engine and country
212
() 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.
@) For the sake of the environment
— Do not overfill the fuel tank, or fuel could
leak out when the vehicle is warming up.
— Fuel should never enter the sewer system or
come into contact with the ground.

8W1012721BB
Checking and Filling

@) Tips
The fuel filler door on your vehicle does not
lock if you lock the vehicle from the inside us-
ing
the central locking switch.

Fuel filler door emergency release
If the central locking system malfunctions, the
fuel filler door can be unlocked manually.

Fig. 158 Right side trim panel in the luggage compart-
ment: opening the trim panel

Fig. 159 Luggage compartment: fuel filler door emergency
release
The emergency opening mechanism is located
behind the right side trim panel in the luggage
compartment.
> Open the cover in the side panel > fig. 158.
> To unlock the fuel filler door, loosen the loop
from the retainer and then pull on the loop
carefully > fig. 159 >@).
> Press on the left side of the fuel filler door to
open it > page 211, fig. 156.
® Note
Only pull on the loop until you feel resistance.
You will not hear it release. If you continue to

pull, you could damage the emergency re-
lease mechanism.
Emissions control
system
General information
ZA\ WARNING
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.

— Never touch the exhaust tail pipes once they
have
become hot. This could result in burns.
— Do not park your vehicle over flammable
materials such as grass or leaves because
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.
(ele) Nidtml alg
Follow the safety precautions > page 213, 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.
213

8W1012721BB
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 217.
— If the engine oil level is too low, add engine oil
=> page 218. 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
Applies to: vehicles with oil level warning
3 Please add oil immediately
Stop driving and switch the engine off. Check the
engine oil level > page 217 and add engine oil
immediately > page 218.
2 Please add max. x qt (x I) oil. You can con-
tinue driving
Add the amount of oil shown immediately
=> page 218.
Reducing the oil level
3 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
2 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 EE 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.
Observe the safety precautions > A\ in General
information on page 214.
> 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.
217
>

Index

Bluetooth
Audio player... . 2... cece eee eee eee eee 195
Connecting a device. .......00. eee eeee 207
Connecting a mobile phone............ 158
Deleting
adevice................00 00 208
Device OVervieW secs s «sees 3 + eawe ss eee 207
Disconnecting a device.............00. 207
Displaying profiles..................0. 208
Selecting a device s seas ss seg ts ees 2 3 207
Specifying a favorite.................. 208
BoOStss « « cosy: ¢ ¢ eyes 5 © sees § o Rewn ¢ a ees ¢ e 14
Boost pressure indicator................. 14
Brake fluid

New brake pads..............---000-- 101
Break-in security feature..............0.. 33
Breaking in
New brake pads..............-..00005 101
N@W tiCGSs « s eaves = ¢ says + © eure 2s eee Ge 234
Browser
refer to Mediacenter................0. 198
Business address.............--000000- 183
Cc
California Proposition 65 Warning........ 214
Battery specifiers « a sno 2 wrens © somnne wo 9 224
CALLLISE o ssc x = vmaaie 2% swavese vx wena eae 162, 164
Cameras
Coverage areaS... 1.2... . eee eee eee 115
Locations...................0.000005 116
Capacities
FUeL TANK: » sew ss ewe 2 9 aes 2 dame Be Be 278
Washer fluid reservoir..............--. 278
Cargoimatis « « wseon «x sows ee ies 4 o sonne & o oe 85
Car kiss ¢ s anon oo ese y 2 ease oo oo oe ees 34
Car phone
Serial number (IMED) .............00005 165
GCarwashiis ¢ savin se essa se ewe a cme v6 ores 247
Catalytic converter. .... 06s. cse eee ee eee 213
280
Central locking:ers « «comes + + seca sa emai eo ae 30
Auto Lock... 2. eects 30
Convenience-key « ess: ¢ wucwu s eewn ss rows e 35
Convenience opening and closing......... 42
Luggage compartment lid............... 37
Mechanically unlocking and locking....... 32
MeSSAGES « scsi «onesie so eae » oem av wee 32
Remote control key..............-.000- 35
SECUMG’ s 2 wars 5 x saaw £ HEME FE HOR F 5 oe 31
Vehicle key cies so essen 6 o enone so cxere & & sree 35
Central locking switch.............000005 32
Ceramic brakeSica: 2 snau so gem < o meme 2 101
Certificationies + s saws 4 s sane x x eae ge RoR 275
Charging
refer to Power sourceS...........-22+--- 78
Charging the battery
Mobilerdevicests « « isseve +o scaueue + x ssc > oo 196
USB... eens 160
WI£CLESS': « sues 5 5 semen 5 2 een ce oe ose 160
Child safety lock
Climate control system controls inthe rear. 41
PoweriwindOwSvernce « «sos + sown ow anacmn 8 41
Rear doors... 2... eee ee eee 41
Child safety seats..... 0.0... cee ee eee eee 72
Securing to the top tether anchor........ 76
Securing with a safety belt.............. 75
Securing with LATCH...........-.000005 74
Cleaning... .. ccc cece eee eee eee 247
Cleaning Alcantara’. «cscs cows cee ee 250
Cleaning artificial leather............0.. 250
Cleaning carbon components........ 249, 250
Cleaning controls’: » sees ss sees y es eeen sees 249
Cleaning decorative parts/trim........... 249
Cleaning exhaust tail pipes.............. 249
Cleaning plastic parts.................. 249
Cleaning textiles................000005 250
Climate control system..............0005 87
also refer to Automatic climate control sys-
OTs: © = wteung o & seyem u 2 eens & Y eeu «2 oe x 87
Climate control system controls in the rear
Child safety lock = cscs «2 wane » wane » eusven 41
Closing
Automatic luggage compartment lid...... 38
Convenience closing..............+505% 42
HOOG sx o sees 2s semi oo wen 6 Basa v oreo 215
Luggage compartment lid.............0. 37
Luggage compartment lid with foot motion . 39