2021 AUDI A7 fuel pump

Checking and Filling

Fueling procedure
Your vehicle is equipped with a capless fuel filler
system.


Fig. 157 Right rear side of the vehicle: opening the fuel
filler door

- iu
Fig. 158 Right rear side of the vehicle: fuel pump nozzle
inserted
The fuel filler door is unlocked or locked by the
central locking system.
> Unlock the vehicle if necessary.
> Conventional drive system: Press on the left
side of the fuel filler door to open it > fig. 157.
> Plug-in hybrid drive: Pull on the VY switch in the
driver's door. The fuel filler door will open auto-
matically after venting is complete.
> Plug-in hybrid drive: Note the information for
refueling at the end of this chapter.
> Insert the fuel pump nozzle all the way into the
fuel filler neck. Make sure it is seated correctly.
> Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
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.
256
> 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 ona label located on the inside of the fuel
filler door. For additional information on fuel, see
=> page 254.
For the tank capacity in your vehicle, refer to the
Technical Data > page 332.

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
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

4K8012721BF
Checking and Filling



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.

@) 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.
@) 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.
@ Tips
Your vehicle is equipped with a misfueling
guard. It allows the vehicle to be fueled only
with
the correct fuel pump nozzle.
—Aworn or damaged nozzle or a nozzle that
is too small may not be able to open the die-
sel misfueling guard. If this is the case, try
turning the nozzle before inserting it in the
fuel filler neck, use a different fuel pump, or
see an authorized Audi dealer or authorized
Audi Service Facility for assistance.
—The misfueling guard does not open when
adding fuel from a fuel container. When re-
fueling with a reserve canister, you must use
the funnel stored in the luggage compart-
ment > page 257.
@) Tips
Applies to: vehicles with plug-in hybrid drive
- When inserting the fuel pump nozzle, make
sure that you do not press on the fuel filler
door opener @) with the fuel pump nozzle.
See the label in the fuel filler door @)
> fig. 158. Otherwise, a valve will close in
the fuel filler neck and fueling will stop even
if the tank is not full.
— You must vent the tank system again if you
press on the fuel filler door opener. The fuel
pump nozzle can stay in the fuel filler neck
when doing this. Vent the tank system by
pulling the EN) switch in the driver's door
again.
— If the engine turned off because the fuel
level was too low, then you may need to re-
fuel with up to 4.0 gallons (15 liters) of fuel
in order for the vehicle to detect the new
fuel level. Otherwise, the engine may not
restart.
— Fuel can age and may lead to problems
when starting. Audi recommends replacing
the fuel in your vehicle within six months.

Fig. 159 Fuel tank filler neck with the mounted funnel
257

>

Checking and Filling

Read and follow the important safety precautions
=> A\ in Fueling procedure on page 256.
The funnel used for emergency fueling is con-
tained in the vehicle tool kit, which is located in
the luggage compartment under the cargo floor
=> page 305.
> Fold up the cargo floor in the luggage compart-
ment.
> Remove the funnel from the vehicle tool kit.
> Press on the left side of the fuel filler door to
open it > page 256, fig. 157.
> Insert the funnel into the fuel filler neck all the
way until it stops > fig. 159. Make sure that the
ring on the funnel goes into the fuel tank filler
neck.
> Guide the reserve canister filler tube into the
funnel and start the emergency fueling.
> Remove and clean the funnel after the fueling
process. Then close the fuel filler door and
press on it until it latches.
@) Note
Remove fuel that has overflowed onto any ve-
hicle components immediately to reduce the
risk of damage to the vehicle.
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.


Fig. 160 Right cover in the luggage compartment: remov-
ing the cover
258





Fig. 161 Luggage compartment: fuel filler door emergency
release
The emergency opening mechanism is located
behind the right cover in the luggage compart-
ment.
> Remove the screwdriver from the vehicle tool
kit > page 305.
> Insert the flat side of the screwdriver carefully
into the slot between the side trim panel and
the cover > fig. 160 (arrows) and pry out the
cover. Keep in mind that a power cable for the
socket is located on the rear side.
> To unlock the fuel filler door, loosen the red
loop from the retainer and then pull on the
loop carefully > fig. 161 >@.
> Press on the left side of the fuel filler door to
open it > page 256, fig. 157.
() 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.
G@) Tips
Applies to: vehicles with plug-in hybrid drive
— The tank will not be vented if the emergency
release function was used on the fuel filler
door. You can only fill a small amount of
fuel in the tank. Fill only until the fuel pump
nozzle turns off for the first time. Drive to
an authorized Audi dealer or authorized
Audi Service Facility immediately to have
the malfunction corrected.
— Pressure can escape if you open the tank cap
after using the emergency release. This can
create noises.

4K8012721BF

Fuses and bulbs


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.
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
Fuse panel @® (black)

4 |Engine components



S| Brake light sensor
6 |Engine valves
7 |Engine components
8 |Engine components
9 Engine components, 48 V water pump, 48
V drivetrain generator

10 | Oil pressure sensor, oil temperature sensor

Engine components, 48 V water pump, 48
11 |V drivetrain generator, 12 V drivetrain gen-
erator

12 | Engine valves, engine mount

13 | Engine cooling

14 | Engine control module, fuel injectors

Engine sensors, ignition coils, oxygen sen-
sors
15

RAZ-0195
ay
i
Toren
BARRIER P ala


Fig. 192 Left footwell: fuse panel with plastic clip
The fuse assignment @) and @) is in the opposite
order on right-hand drive vehicles.
16 | Fuel pump






Fuse panel (2) (red)
No. | Equipment
1 |Anti-theft alarm system
2 | Engine control module
3 | Left front lumbar support
5 |Horn
6 | Parking brake
7 | Diagnostic interface
8 |Roof electronics control module
9 | Driver assistance systems control module
10 | Airbag control module
iW Electronic Stabilization Control (ESC), An-
ti-Lock Braking System (ABS)

12 | Diagnostic connection, light/rain sensor

Climate control system, vehicle electrical
1
3 system control module

14 | Right front door control module


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

Climate control system compressor, vehi-
15
cle electrical system control module


Catalytic converter heating
Auxiliary battery control module, brake
16 ;
system pressure reservoir


2 |Engine components


Engine components

317

4K8012721BF
Fuses and bulbs














Fuse panel (2) (brown) Fuse panel (2) (black)
4 |Head-up display Luggage compartment lid central locking,
g Climate control system, fragrance system, 11 | fuel filler door, luggage compartment cov-
ionizer eh
9 |Steering column lock 12 |Luggage compartment lid control module
Fuse panel (2) (red)
No. Equipment
1 |Suspension stabilization control module
2 |Service disconnect switch
4 |Electric drive system
5 | Brake system, brake booster
6 |High-voltage battery water pump
7 |Auxiliary climate control
8 |Climate control system compressor
9 |Auxiliary battery control module

10 | High-voltage battery

11 |High-voltage charger

14 |Thermomanagement, water pump

15 | Thermomanagement control module


Fuse panel (3) (brown)

No. | Equipment

1 | Driver assistance systems control module


2 | Audi phone box
Fig. 194 Luggage compartment floor: fuse panel with
plastic clip

Front seat electronics, right lumbar sup-










a port
Fuse panel (@) (black) 4 |Side assist
No. | Equipment 5 |Rear climate control system control panel,
1 | Thermal management Infotainment system control panel
3 | Passenger’s side rear safety belt tensioner 6 |Tire pressure monitoring system
4 |Driver’s side rear safety belt tensioner 7 |Emergency call system
5 |Air suspension/suspension control 8 Auxiliary heating radio receiver, tank mod-
6 |Automatic transmission control module ule
7 |Rear sliding sunroof, rear spoiler 9 |Automatic transmission selector lever
8 |Rear seat heating 10 TV tuner, data exchange and telematics
9 | Convenience system control module, left centro mouule
tail light
ll Convenience access and start authoriza-
10 | Front belt tensioner on driver's side tion control module
12 | Garage door opener

13 | Rearview camera, peripheral cameras


319