2021 AUDI Q7 catalytic converter

4M1012721BC
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.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 93 / SUPER PLUS MIN. RON 98
Using premium plus gasoline with at least 93
AKI / 98 RON is recommended.
If no premium plus gasoline is available, you can
also use premium gasoline with 91 AKI /95 RON.
However this does reduce the engine power
slightly.
CG) 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, refueling at high-traf-
fic gas stations is recommended. 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 >
241

4M1012721BC
Checking and Filling

continue fueling, or else the expansion space in
the tank will be filled with fuel.
> After the fuel pump has switched off, wait five
seconds before removing the nozzle to allow
the rest of the fuel to finish dripping into the
fuel tank.
> 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 241.
For the tank capacity in your vehicle, refer to the
Technical Data > page 314.
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.


ZX 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.


ZA\ WARNING
Audi does not recommend transporting fuel
containers inside the vehicle. Fuel could leak
out of the container and ignite, especially dur-
ing 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
C) 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.
243
>

Checking and Filling


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
Applies to: vehicles with manual fuel filler door release

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

a sity
Fig. 165 Luggage compartment: fuel filler door emergency
release
The emergency release mechanism is located be-
hind the right light cover in the luggage compart-
ment.
> Remove the screwdriver from the vehicle tool
kit > page 286.
> Use the screwdriver to remove the light cover
> fig. 164.
> To unlock the fuel filler door, loosen the red
loop from the retainer and then pull on the
loop carefully > fig. 165 >@).
> Press on the left side of the fuel filler door to
open it > page 242, fig. 162.
244
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

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.
Catalytic converter
Observe the safety precautions > page 244, Gen-
eral 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 >

4M1012721BC
Checking and Filling

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 2421).
Engine compartment
ere MUL ety
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area in the vehicle. > A.
Explanation of warnings (sticker in the engine
compartment):

Hot engine components!
@ Rotating parts!

The radiator fan can switch on at any
[2 time!

High voltage! Switch off the engine be-
fore coming into contact with any igni-
tion system components!

The catalytic converter can be damaged
"271i the oil level is too high!
Always follow the instructions in the op-
oy erating manual.




Z\ 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 contained


— 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 coolant is
escaping.
—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 from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
— Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition system
when the engine is running or is starting.
— 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.
— Set the parking brake first and select the
“P” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.


in the coolant) can catch fire.


1) Depending on the engine and country
245

Checking and Filling

The engine oil filler opening may be located ina
different area depending on the specific engine.
Engine oil
If the engine oil level is too low
If you need to add engine oil, use an oil that is
listed on the sticker. The sticker is located at the
front of the engine compartment > page 247,
fig. 168. When using the engine oil listed on the
sticker, you can adjust the oil level as often as
needed.
If engine oil that meets the recommended speci-
fication is not available, in an emergency you
may add a maximum of 1 quart (1 liter) of
ACEA C3 or API SN engine oil one time until the
next oil change.
For more information on the correct engine oil
for your vehicle, contact an authorized Audi deal-
er or authorized Audi Service Facility. Have the oil
changed by an authorized Audi dealer or author-
ized Service Facility.
@) Tips
Audi recommends using engine oils provided
by Audi Genuine Parts.
Messages
Engine oil pressure
E Turn off engine. Oil pressure too low
Stop driving and switch the engine off. Check the
engine oil level > page 249.
— If the engine oil level is too low, add engine oil
=> page 250. 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
E& Please add oil immediately.
248
Stop driving and switch the engine off. Check the
engine oil level > page 249 and add engine oil
immediately > page 250.
=, Add max. x qt (x J) oil. You can continue
driving
Add the amount of oil shown immediately
=> page 250.
Reducing the oil level
=) 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.
2 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

Fuses and bulbs

ZA\ WARNING
Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
This can cause damage to the electrical sys-
tem and increases the risk of fire.
@) 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.
@) 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.



Fig. 197 Front passenger's footwell (right-hand drive vehi-
cle): fuse panel with plastic clip

(brown) nT <7 wo @ 7 oo 3 o

Zz ° . | Equipment

Catalytic converter heating

Engine components

Engine components

Engine components

Brake light sensor

Engine components

Engine components

Engine components

WOlLOlINI
AD)
M|ASWIN/
PR
Engine components

B o Oil pressure sensor, oil temperature sensor

Bb BR Engine components

BR N Engine components

b Ww Engine cooling

BE R Engine control module

B wn Engine sensors
Bb a Fuel pump



panel with plastic clip Fuse


No. | Equipment

1 {Ignition coils



3 | High-voltage heating

298

Index

Battery
Charging (12 Volt vehicle battery)....... 256
Vehicle battery (12 Volt)............... 254
Winter operation (12 Volt vehicle battery) . 255
Blinds
refer to Panoramic glass roof............ 46
BlOGK TOUTE vcs + « crsanin © 5: cavemen © & oreo © wanes 208
Oe 94
Bluetooth
Audio player. .... 0.0.2... ee eee eee eee 223
Connecting a device...............00-- 238
Connecting a mobile phone............ 183
Deleting adevice...............00000- 239
Device overvieW.... 0.0.00. ee eee eee 238
Disconnecting a device................ 238
Displaying profiles.................... 239
Selecting adevice.................00. 238
Specifying a favorite.............0000- 239
BOOStss « : eens 2 y ses « e eee bo ees Go eee ee 15
Boost pressure indicator................. 15
Brake fluid
Checking the brake fluid level........... 253
Brak@Sisss 2 ¢ sews 5 ¢ cans + 0 eee fe ore eo ee 106
Brakesfluids cs season x amamna a x anime oo somnine 6 253)
Emergency braking function............ 109
HGtticra: 2 5 susan 3 8 aatam ¥ S RGIER 2 oe 3 eR 110
New brake pads « sec se ove oe sens sees 107
Bratids:s = seem: = = weeps & = eeeng © 4 eee G4 Ree 240
Break-in security feature................. 37
Breaking in
New brake pads « sess so sesou oo camer o coaans 107
ING WEIROSE: « « winzson s » crnnace 6 9 oxenene © 0 axniean 266
Browser
refer to Media center.................. 227
Business address.............2.22--0-- 208
Cc
California Proposition 65 Warning........ 246
Battery specific...............0.-.00. 255
Calllist.. 0... 2. eee eee eee eee 187
CameraS 0... eee 124
LOCAtIONS <5 « = seem 5 2 Rem FE eR SE oe g 125
Capacities
Fuelitank’: » soos 3 2 mews 2 2 awe 2 4 came + ne 314
Washer fluid reservoir................. 314
CargoPloor eno < csccose 2 v snevece a v exevene av enecene 2 3 91
316
CarQOiMe bien: « sows v seswens wo casicows 1 wt eamwses © vt ome 90
Carwash, . s wvvsa eo soni av anaes 4 ao insane wo ane 280
Catalytic converter... 0.0... cee eee e eens 244
Cell phone
refer to Telephone...........-..-++05- 183
Cell phone compartment
refer to Audi phone box............... 185
Central
lockingsec. « 2 ces 0 x moms + 6 same a 0 ate 34
Auto Lock... 0.6... eee eee es 34
Convenience key..........-.00 eee ee ee 39
Convenience opening and closing......... 46
Luggage compartment lid............... 42
Mechanically unlocking and locking....... 37
MESSAGES « secures so acsmes +o awewes vo exon v aeMN 36
Remote control key............2-..0005 39
SGUeING.< = x sea « = sees Fo eee Fe ees FP wee 35
Vehicle key sass Central locking switch.................-. 36
Geramic brakeSwoas + ¢ eayes ¢ x seme 2 x ees & 6 3 107
GentificatiOnin: « » axa: = wee 2 sme 2 eee 311
Charging
refer to Power sourceS.........--0 eee eee 86
Charging the battery
Mobileidevicesi. . . csisceuss «sania a a avesiue 0 ¥ ave 224
USB... eee 186
Wireless: « « arms s ¢ anes gs agus a 2 awe 2 6 186
Child safety lock
Climate control system controls in the rear. 44
Power windows............0 2.0000 eee 44
ReardGorsis« + s seus «a mame 2 AeS.8 & Gale aS 44
Child safety seats.............0..000 eee 80
Securing to the top tether anchor........ 84
Securing with a safety belt.............. 83
Securing with LATCH..............2-00. 82
Cleaning... 0.2... . cee eee eee eee 280
Cleaning Alcantara................0000. 283
Cleaning artificial leather............... 283
Cleaning carbon components........ 282, 283
Cleaning controls:s « sews s sews «esas x os 283
Cleaning decorative parts andtrim........ 282
Cleaning exhaust tail pipes.............. 282
Cleaning plastic parts.................. 282
Cleaning textiles...............00.000. 283
Climate control system...........--..0-- 93
Climate control system controls in the rear
Child safety lock..... 0... ccc cece eee eee 44