2018 AUDI A8 engine

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" N .... 0 0 :c ' ~ At the end of the charging process, switch the
charger off and pull the power cab le out of the
socket.
~ Now remove the charg ing device terminal
clamps .
~ Close the cover @on the positive term inal and
re-install the
cover (!).
~ Close the hood c:;, page 2 73 .
A drained battery can freeze at temperatures
around
322F (0QC) . A frozen or thawed out bat­
tery must no longer be used . The battery hous ing
could be cracked by the format ion of ice , which
could cause battery acid to leak out
c:;, ,&. .
Charg ing the b attery
Only use chargers with a ma ximum charg ing
v oltage of 14 .8 V.
The battery connecting cables
do not need to be disconnected . Do not open the
battery when charg ing .
Read all of the manufacturer's instructions for
the charger before charging the battery .
A WARNING
-A h ighly exp losive mixture of gases can form
w hen cha rging batter ies. O nly charge t he
vehicle ba tte ry in well -vent ilated a reas.
- A d rained vehicle battery can freeze at tem­
peratu res a round 32
Q F (0 QC). A froze n or
thawed ve hicle battery m ust not be ch arged
and must not be used anymore. The battery
housing can crack and battery acid can leak
out if ice forms, whic h increases the risk of
an exp losion and chemical burns. Contact an
authorized Audi dealer or authorized Aud i
Service Facility for more information.
- Do not connect or disconnect the charg ing
cable while charg ing because th is increases
the risk of an explosion .
(D Tips
-Only charge the vehicle battery through the
connections in the engine compartment.
-Read all of the manufacturer's instructions
for the charger before charg ing the ve hicle
battery .
Ch eck ing and F illing
Windshield washer
system
F ig . 263 E ngin e compar tmen t: was he r fl ui d reservo ir cap
M N
-N ' "' "' m
The windshield washer fluid reservoir O contains
the cleaning solution for the windshie ld and the
headlight washer system
c:;, fig. 263, c:;, page 274.
The reservoir capacity can be found in
<=> page 334.
To reduce the risk of lime scale depos its on the
spray nozzles, use clean water with low amounts
of calcium. Always add w indow cleaner to the wa­
ter . When the outside temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze .
@ Note
-The concentration of ant i-freez ing agent
must be adjusted to the veh icle operat ing
condit ions in the respective cl imate . A con­
centration that is too high can lead to vehi­
cle damage.
- Never add radiato r anti-freeze or other addi­
t ives to the washer fluid.
- Do not use a glass cleaner that conta ins
paint so lvents, because t his could damage
the paint.
Service interval display
The service interval display detects when your ve­
hicle is due for service.
T he serv ice interval d isplay wo rks in two stages:
-In sp ec tio n o r oil change remind er: after a cer-
tain distance driven , a message appears in the
.,.
2 8 1

Checking and Filling
instrument cluster display each time the ign i­
tion is switched on or off . The rema ining
distance or time is displayed br iefly.
- Inspection or oil change due: if yo ur vehicle
h as reached an inspection o r oi l change interval
o r both intervals at t he same time, the mes­
sage
Inspection due! or Oil change due! or Oil
change and inspection due!
appears br iefly af­
te r switch ing the igni tion on/off .
Checking service intervals
You can check t he rema ining distance o r time un­
til the next oil change o r next inspec tion i n the
Ca r menu. To do this, select: the
IC ARI function
button
> Car systems contro l bu tton > Service &
control > Service intervals .
Resetting the indicator
A n author ized A udi dealer or authorized A udi
Serv ice Facility will reset the serv ice interval d is­
p lay after pe rforming serv ice .
I f yo u have chan ged t he oil you rself, you must re ­
set t he oil change interva l.
To reset the in dic ator, se le ct : th e
ICAR I fu nc tion
but ton
> Car system s control button > Service &
control > Service intervals. T urn t he control knob
downwa rd to
Reset oil change interval an d press
the co ntro l knob.
{QJ Note
- On ly reset the oil ch ange in dicato r if the oil
was c han ge d.
- Fo llow ing the service i nte rvals is cr itical to
maintai ning the service life a nd value o f
your ve hicl e, especia lly t he engine. Even if
the m ileage on the veh icle is low, do not ex­
c e ed th e tim e fo r th e ne xt serv ic e .
282

tires according to the load and
the size of the tires installed.
Wheels
Tire pressure
Model/ Tire designation Normal load Maximum load
Engine (up to
2*/3 people)al
front
rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A8/A8 L: 235/55 Rl8 104H
35 24
0
30 210
36 250
38 260
3.0L
255/45 Rl9 104H 35 240
30 210 36 250 38 260
6 cylinders 265/40 R20 104H 35 24
0
30 21
0
36 2
50
38 26
0
265/40 R20 104V 35 240
30 210 33 230 35 240
265/35 R21 101 Y 38 260
35 240
36 250
38 2
60
275/35 R21103Y 35 240
30 210 36 250 35 240
A8/A8 L: 235/55 Rl8 104H 36 250 30 210 38 260 38 2 60
4.0L
255/45 Rl9 104H 36 250 30 210 38 260 38 260
8 cylinders 265/40 R20 104H 36 250 30 210 38 260 38 260
265/40 R20 104V 36 250 30 210 35 2
40
35 2
40
275/35 R21 103V 36 250 30 210 38 260 38 260
58: 265/40 R20 104V 36 25 0 30 210 3 9 27
0
38 260
4.0L
265/35 R21101 Y 39 270 33 230 44 300 42 290
8 cylinders 275/35 R21 103V 36 250 30 210 44
300 42
290
58 plus: 265/40 R20 104V 38 260 32 220 39 270 38 260
4.0L
275/35 R21 103V
8
cylinders 45 310 39 270 49 340 48 330
a ) Vehicles with 4 seating positions: two people in the front, Vehicles with 5 seating
positions:
two people in the front, one person in the rear
A WARNING
Please note the important safe­
ty precautions regarding tire pressure
c:::> page 293 and load
limits
c:::> page 295.
Tires and vehicle load limits
There are limits to the amount of
~ load or weight that any vehicle that
is overloaded will not handle
well and is more difficult to stop.
Overloading can not only lead to
loss of vehicle control, but can al­
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
and sudden deflation that can
cause the vehicle to crash.
N
~ and any tire can carry. A vehicle
0 0 :c ' Your safety and that of your pas­
sengers also depends on making
..,
295

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" N .... 0 0 :c ' 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.
Description
Applies to: 58 plus
The tire pressure monitoring system monitors
the pressure in the four tires when driving.
The system uses sensors that measure the tem ­
perature and pressure in the tires . The data is
sent from these sensors to the control module by
radio frequency.
The Tire Pressure Monitoring System shows the
current pressures and temperatures of the tires
in the Infota inment system
c:> page 303 . It also
compa res the current tire pressures with the
stored tire press ures and gives a warning in the
driver information system if the tire pressure is
different from what is stored
c:> page 304.
The system does not detect if the stored tire
pressures match the recommended tire pres­
sures.
- Every time the tire pressures change, for exam-
ple when the load in the vehicle changes,
- after replac ing a tire, or
- if wheels with new wheel sensors are used,
you must store the tire pressures again
c:> page 304.
A WARNING
-The tire pressure mon itor ing system assists
the driver in monitoring tire pressures. The
dr iver is responsible for having the tires in­
flated to the correct pressure.
- Do not change the tire pressure when the
temperature of the tire is extremely high.
T his cou ld result in serious damage to the
t ir e and even cause the tire to burst, in­
creasing the risk of an accide nt.
Wheels
-A tire with low pressure flexes more . This
heats the tire up too much. This could cause
the tread to separate and even cause the
tire to burst, increasing the risk of an acci­
dent.
- The Tire Pressure Monitoring System does
not warn you of damage or defects in the
tire construct ion that could cause the tire to
burst, for example. Inspect your tires regu­
larly.
@ For the sake of the environment
Low tire pressure increases fuel consumption
and tire wear.
(D Tips
-The pressure of the spare t ire* is not mon i­
tored.
- If tires are replaced, the sensors/va lves do
not need to be removed or replaced. Just re­
placed the valve stem and, if necessary, the
valve and the whee l electronics . If you have
questions, see an authorized Audi dealer or
authorized Audi Service Facility.
Displaying tire pressures/temperatures
Applies to: 58 plus
Requirement: the ignition must be switched on.
.. Select: the I CAR! funct ion button > Car systems
> Service & control > Tire pressure monitor >
Display tire pressure .
The current tire pressures are shown in green and
yellow numbers in the Infotainment system:
-Green: the current tire pressure and the spec i­
fied tire pressure are approx imately the same .
-Yellow: the current tire pressure is too low
compared to the specified tire pressure .
The specified tire pressure is the last tire pres ­
sure that was stored
c:> page 304 .
Note that the tire pressure also depends on the
temperature of the tire . The tire pressure in­
creases as the engine becomes warmer while
driv ing.
.,.
303

lL t:0 ....
'"" ......
'"" .... 0 0 :c ' Driver's side cockpit fuse assignment
Fig. 286 Drive r side cockpit: fuse panel with plastic bracket
Fuse panel @ (brown)
No. Equipment
1 Light switch
2 Eme rgency start coil (driver iden tification)
3 Left rear door control module
4 Head-up display
5 Horn
6 Interior lights (headliner)
Steering column lever, multifunction
8 steer ing whee l controls, steering wheel
heating
10 Powe r steering column adjustment
11 Driver door control module
12 Diagnostic con nector, light/rain sensor
14 Power steering column adjustment
lS Power steering, A/C compressor
16 Brake booster
Fuse panel © (black)
No. Equipment
1 Front seat heating
2 Windshield wipers
Fuses and bulbs
Fuse panel © (black)
3 Front exterior lighting
4 Sliding/tilting sunroof
5 Driver power window
6 Dr iver 's seat (pne umat ic)
7 Panorama glass roof
8 Dynamic steering
9 Front exterior lighting
10 Windshield/headlight washer system
11 Left rear power window
12 Panorama glass roof
Front passenger side cockpit fuse
assignment
Fig. 287 Fro nt passe nge r side cockp it: fuse panel with
plastic bracket
Fuse panel @ (black)
No. Equipment
1 Anti-theft alarm system
2 Transmission contro l module
3 Front climate control fan
4 Engine s upply
6 Engine control module
7 Front passenger door control module
323

Fuses and bulb s
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace burned out
bulbs for you .
It is becoming increasingly more and more diffi­
cult to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­ moved before you are able to get to the bulb .
This applies espec ially to the light bulbs in the
front of your car wh ich you can only reach
through the engine compartment .
Sheet metal and bulb ho lders can have sharp
edges that can cause ser ious cuts, and parts
must be co rrectly taken apart and then p roperly
put back together to help prevent breakage of
parts and long term damage from water that can
enter housings that have not been properly re ­
sea led.
F or your safety, we recommend that you have
your authorized Audi dealer replace any bu lbs for
you, since your dealer has the proper tools, the correct bulbs and the expertise.
Ga s di sc ha rge la mp s (Xe non ligh ts):
Due to the high electrical voltage, have the bulbs
replaced by a qua lified techn ic ian . Head lights
with Xenon light can be identified by the high
voltage sticker.
LED headlights* requ ire no maintenance. P lease
contact your authorized Aud i dealer if a bulb
needs to be replaced.
A WARNING
Contact w it h high -vo ltage components of the
electrical system and improper rep lacement
of gas disc harge (Xenon) head light bu lbs can
cause serious personal injury and death.
- Xenon bulbs are pressurized and can ex ­
plode when being changed.
- Changing Xenon lamps requires the special
training, instructions and equipment.
- Only an a uthorized Audi dea ler or other
qualified workshop s hou ld change the bulbs
in gas disc harge lamps .
326
A WARNING
There are parts with sharp edges on the open­
ings and on the bulb holders that can cause
serious cuts .
- If you are uncertain about what to do, have
the work performed by an author ized Audi
dealer or other qual ified workshop . Ser ious
pe rsonal inju ry may resu lt from improperly
pe rformed wor k.
(D Tips
- If you must replace the light bulbs yourself,
always remember that the eng ine compart­
ment of any vehicle is a hazardo us a rea to
work in. Always read and heed all WARN­ INGS
~ page 272.
-It is best to ask you r author ized Audi dea le r
w henever you need to change a bulb.

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" N .... 0 0 :c ' Emergency situations
General
This chapter is intended for trained emergency
crews and working personnel who have the nec­
essary tools and equipment to perform these
operations.
Starting by pushing or
towing
~ Note
Vehicles with an automatic transmission can­
not be started by pushing or towing.
Starting with jumper
cables
If necessary, the engine can be started by con­
necting it to the battery of another vehicle .
If the engine should fail to start because of a dis­
charged or weak battery, the battery can be con­
nected to the battery of
another vehicle, using a
pair of jumper cables to start the engine.
Jumper cables
Use only jumper cables of sufficiently large cross
section
to carry the starter current safely. Refer
to the manufacturer's specifications.
Use only jumper cables with
insulated terminal
clamps which are distinctly marked :
plus(+) cable in most cases colored red
minus(-) cable
in most cases colored black.
A WARNING -
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal in­
jury. Follow the instructions below for safe
handling of your vehicle's battery .
-Always shield your eyes and avoid leaning
over the battery whenever possible.
-A dead battery can freeze at temperatures
around 32 °F (0 °C) . If the vehicle battery is
frozen, you must thaw it before connecting
the jump start cables. If you do not, this in-
Emergency situations
creases the risk of an explosion and chemi­
cal burns. After jump starting the vehicle,
drive to an authorized Audi dealer or author­ ized Audi Service Facility immediately to
have the vehicle battery checked.
- Do not allow battery acid to contact eyes or
skin . Flush any contacted area with water
immediately.
- Improper use of a booster battery to start a
vehicle may cause an explosion .
- Vehicle batteries generate explosive gases .
Keep sparks, flame and lighted cigarettes
away from batteries.
- Do not try to jump start any vehicle with a
low acid level in the battery .
- The voltage of the booster battery must also
have a 12-Volt rating . The capacity (Ah) of
the booster battery should not be lower
than that of the discharged battery. Use of
batteries of different voltage or substantial­
ly different "Ah " rating may cause an explo­
sion and personal injury.
- Never charge a frozen battery. Gas trapped
in the ice may cause an explosion.
- Never charge or use a battery that has been
frozen. The battery case may have be weak­
ened.
- Use of batteries of different voltage or sub­
stantially different capacity (Ah) rating may
cause an explosion and injury. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged battery.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS
c>page 272.
@ Note
- Applying a higher voltage booster battery
will cause expensive damage to sensitive
electronic components, such as control
units, relays, radio, etc.
- There must be no electrical contact between
the vehicles as otherwise current could al­
ready start to flow as soon as the positive
( + ) terminals are connected.
327

Emergency situations
@ Tips
The discharged battery must be properly con­
nected to the vehicle's electrical system .
When jump starting or charging the battery,
never connect the negative ground cable to
the battery negative post because the battery
manager system must be able to detect the
battery's state of charge. Always connect the
negat ive g round cable to the negative ground
post of the battery manager control unit.
Using the jump start
cable
Both jump start cables must be connected in the
correct order!
Fig. 289 E ngin e compartme nt: co nn ectors for jump start
cables and a charger
Fig. 290 Jump starting using a battery in anot her vehicle:
A
-p rov id in g current, B -drai ned
The procedure for connecting jump start cables
that is descr ibed next is designed to help jump
start your vehicle.
Vehicle with discharged battery:
~ Turn off lights and accessories, move automatic
transmission lever to N (Neutral) or P (Park)
and set parking bra ke.
328
Connecting the positive cable (red) to the
positive terminal
~ Open the cover on the positive terminal
qfig . 289.
1. Secure one end of the pos itive cable (red) to
the jump start pin
(D q fig. 290 (pin under
the cover =
"plus") on the vehicle that needs
to be started @.
2. Secure the other end of the positive cable
(red) to the posit ive terminal @on the bat­
tery provid ing the cur rent @.
Connecting the negative cable (black) to the
negative terminal
3. Secure one end of the negative cable (black)
to the negative terminal @ on the battery
that is providing the current @.
4. Secure the other end of the negative cable
(black) to the jump start
pin @ (hex head pin
= "negative") on the vehicle that needs to be
started @.
Starting the engine
~ Sta rt the eng ine on the vehicle providing the
jump start @and let it run at idle.
~ Now start the engine on the vehicle with the
drained battery @.
~ If the engine does not start, stop the starting
procedure after 10 seconds and then repeat it
after approx imately 30 seconds.
~ Remove the cables when the engi nes are run­
ning. Remove them in reverse order from the
way they were installed.
~ Close the cover on the posi tive terminal.
The battery is vented to the outside to prevent
gases from enter ing the vehicle interior. Make
sure that the jumper clamps are well connected
with their
metal ports in full contact with the
battery terminals .
A WARNING
-To avoid serious personal injury and damage
to the vehicle, heed all warnings and instruc­
tions of the jumper cable manufacturer. If in
doubt, call for road service.
-Jumper cables must be long enough so that
the vehicles do not touch.
..,.