fuel pressure AUDI A8 2021 User Guide

4N0012721BF
Wheels

heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate-
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire failure > A\.
The grade C corresponds to a level of perform-
ance which all passenger car tires must meet un-
der the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher Levels
of performance on the laboratory test wheel than
the minimum required by law.

ZA\ WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning or peak traction charac-
teristics.

ZA WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.

ZA WARNING
Temperature grades apply to tires that are
properly inflated and not over or underinflat-
ed.


Tire pressure monitoring
system
(1) General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la-
bel, you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving ona signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the sys-
tem is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
307

Fuses and bulbs








Fuse assignment - left side of cockpit
RAZ-0202

Fig. 210 Left side of the cockpit: fuse panel with plastic
clip






Fig. 211 Left side of the luggage compartment: fuse panel
with plastic clip
2 | Engine components 10 | Volume control
3 | Engine components 11 | Light switch, switch panels
4 |Engine components 12 | Steering column electronics
5 | Brake light sensor 14 | MMI Infotainment system control module
6 | Engine components 15 |Steering column adjustment
7 |Engine components 16 | Steering wheel heating
8 | Engine components
9 | Engine components ae ft side of the luggage
10 | Oil pressure sensor, oil temperature sensor (eelar|PEINE Ee
11 | Engine components g
12 | Engine components
13 | Engine cooling
14 | Engine control module, fuel injectors
15 | Engine sensors
16 | Fuel pump









330
No. Equipment No. | Equipment
Climate control system, interior air sensor 1_| Thermal management
2 | Audi phone box 5 |Air suspension/suspension control
Climate control system, fragrance system, 6 |Automatic transmission control module
3 particulate matter sensor 7 |Right rear seat adjustment
4 |Head-up display 8 | Rear seat heating
S_ |Audi music interface, USB input 9 |
Left tail light
6 |Instrument panel 10 | Front belt tensioner on driver's side
7 | Steering column lock
8 |Upper/lower display
9 |Instrument cluster

4N0012721BF
Fuses and bulbs





















































Fuse panel () (black) Fuse panel @) (brown)
Luggage compartment lid central locking, 15 |Left rear seat adjustment
11 | fuel filler door, sunshade, luggage com- Front belt tensioner on front passenger's
partment cover 16 side
12 | Luggage compartment lid control module
— Fuse panel (4) (black)
Fuse panel (2) (red) No. | Equipment
No. | Equipment Seat ventilation, rear seat heating, rear-
1 | Rear climate control system blower 1 |view mirror, refrigerator, diagnostic con-
2 | Exterior antenna nection
3 | Exhaust treatment, sound actuator 2 | Gateway control module (communication)
4 |Rear climate control system control panel 3 [Sound actuator
5 | Right trailer hitch light 4 |Transmission heating valve
6 |Trailer hitch positioning motor 5 |Engine start, electric drive
7 |Trailer hitch release 7 |Active accelerator pedal
8 | Left trailer hitch light 8 | Night vision assist, active suspension
9 |Trailer hitch socket 9 _|Adaptive cruise assist
10 |Allroad sport differential 1 Intersection assistant, driver assist sys-
11 | Exhaust treatment tems, radar systems, camera systems
12 |48 V drivetrain generator 2 || Exteriorsoundigenerator
13 | USB input
Fuse panel (3) (brown) 14 [Right headlight
No. | Equipment 15 |Left headlight
1 |Driver assistance systems control module :
2 |Rear Audi phone box Fuse panel () (red)
3 | Rear seat adjustment No:.| Equipment
4 |Side assist 1 | Active suspension
5 |Sereensinthe rear 2 |Service disconnect switch
6 |Tire pressure monitoring system 3_|Refrigerator
7 [Emergency call system 4 | Electric drive system
Auxiliary heating radio receiver, tank mod- 5 |/Brake-system
8 ule 6 | High-voltage battery water pump
9 | Automatic transmission selector lever 7 |Auxiliary climate control
0 TV tuner, data exchange and telematics 8 |Climate control system compressor
control module 9 |Auxiliary battery control module
rT Convenience access and start authoriza- 10 | High-voltage battery
tion control module 11 | High-voltage charger
12 | Garage door opener 14 | Thermal management
13 | Rearview camera, peripheral cameras 15 | Thermomanagement control module
Convenience system control module, right -
14 | Vil light Fuse panel 6) (white)
No. | Equipment
1 |Rear center armrest heating

331

Technical data

(er) Feb a(t)
Fuel tank 21.7 gal (82 L)
Plug-in hybrid drive fuel tank 17.2 gal (65 L)
Plug-in hybrid drive battery energy content 14.1 kWh


Windshield and headlight washer system*

6.1 qt (5.8L)

A/C system refrigerant oil
The exact type and amount of refrigerant oil in
the A/C system is specified on the sticker on the
refrigerant compressor.
Refrigerant oil 130/140 g® +/-10g


Oil with plug-in hybrid drive

290g

+/-10g

a) The specifications depend on vehicle equipment.
Weights


l= [= [\
TANNA OM A
Fig. 214 Safety certificate



Gross Vehicle Weight Rating (GVWR)
The maximum permitted total weight @ of the
vehicle is listed on the safety certificate on the
side area of the door or on the driver's door pillar.
Gross Axle Weight Rating (GAWR)
The maximum permitted load on the front axle
@ or the rear axle @) is listed on the safety cer-
tificate on the side area of the door or on the
driver's door pillar.
Load
The maximum permitted load is listed on the tire
pressure label on the driver's door pillar.
344
Roof load
The maximum permitted roof load is 220 lbs
(100 kg).