brake AUDI A8 2017 Workshop Manual

Emergency assistance
Emergency assistance
General information
... Park the vehicle as far as possible from moving
traffic in the event of a breakdown. In the event
of a flat tir e, park the vehicle on a level surface .
It you are on a steep hill, be especially careful.
.,. Set the parking brake .
.,. Switch the emergency flashers on .
... Set up the warning triangle
r=;, page 312 .
... Have the passengers exit the vehicle . They
should move to a safe place, for example be­
hind a guard rail.
A WARNING
Follow the steps given above. This is for your
protection and the for the safety of other driv­
ers.
Equipment
Warning triangle
Applies to: vehicles with warning triangle
Fig. 271 L uggage compa rtm ent lid : w arnin g triangle
The warning triangle placed in the vehicle at the
factory is located in the luggage compartment.
... To remove the warning triangle, press the fas-
tener in the direction of the arrow and fold the
holder down.
The luggage compartment lid is only designed to
hold the warning triangle offered by th e Audi
Genuine Accessories program.
312
Vehicle tool kit
Applies to: vehicles with vehicle toot kit
Fig. 272 L u gg age compartmen t: cargo floor cove r fo lded
upward
Fig. 273 Luggage co m partment: exa mple of veh icle toot
kit and vehicle j ack
The vehicle tools and vehicle jack* are stored in
the luggage compartment under the floor cover .
... Lift the cargo floor by the plastic handle .
... Hook the handle into the luggage compartment
seal
r::> fig. 272 .
.,. Turn the handwheel counter-clockwise and re ­
move it .
.,. Remove the spare tire* to access the vehicle
tool kit
r::;, fig. 2 72 .
Depend ing on the equipment , the veh icle tool kit
may be located under the spare tire, under an­
other cover or in the tool box.
T he position of the vehicle jack* may vary .
A WARNING
Improper use of the veh icle jack can cause se ­
rious personal injuries.
- Never use the screw driver hex head to
tighten wheel bolts, since the bolts cannot
attain the necessary tightening torque if you .,..

0 co .... N ,..._
N .... 0 0 :c ' use the hex head, potentially causing an ac­
cident.
- The factory-supplied jack is intended only
for your vehicle model. Under no circum­
stances should it be used to lift heavy
vehicles or other loads; you r isk injuring
yourself .
- Never start the engine when the vehicle is
ra ised, which could cause an accident.
- Support the veh icle secure ly with appropri­
ate stands if work is to be performed under­
neath the vehicle; otherwise, there is a po ­
tent ial risk for injury .
- Never use the jack supplied with your Audi
on anothe r vehicle, particularly on a heav ier
one . The jack is only suitable for use on the
vehicle it came w ith.
(D Tips
The vehicle jack* in your vehicle is mainte­
na nee-free.
Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger's safety when changing a
wheel .
.,. After you experience a tire fail ure, pull the car
well away from moving t raff ic and try to reach
le vel ground before you stop¢,&. .
.,. All passengers should
lea ve the ca r and move
to a safe location (for instance, behind the
guardrail) ¢,&. .
.,. Engage the
parking brake to prevent your vehi­
cle from rolling unintentionally¢,&. .
.,. Move
sel ecto r le ve r to pos it ion P ¢ ,&. .
.,. If you a re towing a trailer, unh itch the trailer
from your veh icle.
.,. Take the
jack and the s pare tir e out of the lug ­
gage compartment
¢ page 312.
WARNING
You or your passengers co uld be injured while
chang ing a wheel if you do not follow these
safety precautions:
Em ergenc y ass is tanc e
-If you have a flat tire, move a safe distance
off the road. Turn off the eng ine, turn the
emergency flashers on and use other warn­ ing dev ices to alert other motorists .
- Make sure that passengers wait in a safe
p lace away from the vehicle and well away
from the road and traff ic .
- To help prevent the veh icle from moving
suddenly and possib ly slipping off the jack,
always fully set the park ing brake and block
the wheel d iagonally opposi te the wheel be­
ing changed. When one front whee l is lifted
off the groun d, p lacing the Automatic
Transmission in "P" (Park) w ill
not prevent
the vehicle from mov ing.
- Before you change a wheel, be sure the
g round is leve l and firm. If necessary, use a
sturdy board under the jack .
- Always s tore the vehicle tool kit, the jack
and the replaced tire in the luggage com­
partment
r::> page 213 .
(D Tips
Befo re c hanging the w heel, you must activate
t he jacking mode, so that the a utomat ic co n ­
tro ls for the Adaptive Air Suspension do not
make it more difficult to lift the vehicle with
the jack
¢ page 315.
Changing a wheel
When you change a wheel, follow the sequence
described below step-by-step and in exactly that
order .
1. Activate the vehicle jack mode ¢ page 315 .
2. Remove the decorative wheel cover *. For
more detai ls see also
r:::> page 314, Decora­
tive wheel covers
or ¢ page 314, Wheels
with wheel bolt caps.
3. Loosen the wheel bolts r:=> page 315 .
4. Locate the proper mounting point for the
jack a nd align the jack below that point
r:::> page 315 or ¢page 316.
5. Raise the ca r wi th the jack ¢ page 315 or
r:::> page 316 .
6. Remove the whee l with the flat tire and then
insta ll
the spare r:::>page 318 . IJII>
313

C) C0 ....
"' " "' .... 0 0 :r The caps are to protect and keep the wheel bolts
clean.
Loosening and tightening the wheel bolts
The wheel bolts must be loosened before raising
the vehicle.
F ig. 276 Changing a wheel: loosening the wheel bo lts
Loosening
.. Slide the wheel wrench onto the wheel bolt as
far as it will go .
.. Take tight hold of the
end of the wrench handle
and turn the wheel bolts
counter-clockwise
about one single turn in the direction of arrow
¢fig. 276.
Tightening
.. Slide the wheel wrench onto the wheel bolt as
far as it will go.
.. Take tight hold of the
end of the wrench handle
and turn each whee l bolt
clockwise until it is
seated .
& WARNING
-Do not use force or hurry when changing a
wheel -you can cause the vehicle to slip off
the jack and cause serious personal injuries.
-Do not loosen the wheel bolts more than
one turn
before you raise the vehicle with
the jack. - You risk an injury.
(D Tips
- Never use the hexagonal socket in the han­
dle of the screwdriver to loosen or tighten
the wheel bolts .
- If a whee l bolt is very tight, you may find it
easier to loosen by carefully push ing down
Emergency assistance
on the end of the whee l bolt wrench with
one foot only . As you do so, hold on to the
car to keep your balance and take care not
to slip.
AS: Raising the vehicle
The vehicle must be lifted with the jock first be­
fore the wheel can be removed.
Fig. 277 Sill panels: markings
Fig. 278 Sill: pos ition ing the veh icle jack
"'Activa te the vehicle jack mode in the MMI :
!CARI function button> Car systems control
button
> Servicing & checks > Air susp.: jack
mode> On .
.. Engage the parking brake to prevent your vehi­
cle from rolling unintentiona lly.
.. Move the
selector lever to position P .
.. Find the marking (imprint) on the sill that is
nearest the wheel that will be changed
c:::;, fig. 2 77 . Beh ind the marking, there is a lift­
ing point on the sill for the veh icle jack.
.. Turn the
vehicle jack located under the lift ing
point on the sill to raise the jack unt il its arm @
c:::;, fig. 278 is located under the designated plas­
tic mount
c:::;, & c:::;,(D .
.. Align the jack so that its arm@c:::;,
fig. 278 en­
gages in the designated lifting point in the door
sill and the movable base @ lies flat on the ..,.
315

Emerg ency assis ta nce
ground . The base @ must be vertical under the
lifting point @.
.. Wind the jack up further unt il the flat tire
comes off the ground
c:> &,.
Position the vehicle jack onl y under the designat­
ed lifting points on the sill
c:> fig. 2 77. There is ex­
actly
one location for each wheel. The jack must
not be positioned at any other location
c::, ,&.c:>Q) .
An uns table surface u nder the jack can cause the
veh icle to slip off the jack. Always provide a firm
base for the jack on the ground. If necessary
place a sturdy board or similar support under the
jack. On
hard, slippery surfac es (such as tiles)
use a rubber mat or similar to prevent the jack
from slipping
c:> ,&. .
A WARNING
-
-Yo u or your passengers could be injured
wh ile chang ing a wheel if you do not follow
these safety precaut ions:
- Position the vehicle jack only at the desig­
nated lifting points and align the jack.
Otherw ise, the vehicle jack cou ld slip and
cause an injury if it does not have suffi­
cient hold on the vehicle.
- A soft or unstable surface under the jack may cause the vehicle to slip off the jack.
Always p rovide a firm base for the jack on
the grou nd.
If necessary, use a sturdy
board under the jack.
- On ha rd, s lippery surface (such as tiles)
use a rubber mat o r similar to prevent the
jack from slipping.
- T o help prevent injury to yourself and yo ur
passengers:
- Do not ra ise the vehicle until you are sure
the jack is securely engaged.
- Passengers must not remain in the vehicle
when it is jacked up.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from th e road and traff ic.
- Make sure jack position is correct, adjust
as necessary and then cont inue to raise
the jack.
316
-Changes in temperature or load can affect
the height of the vehicle .
(D Note
Do not lift the vehicle by the s ill. Pos ition the
vehicle jack only at the designated lifting points on the sill. Otherwise, your vehicle wi ll
be damaged.
(D Tips
The vehicle jack mode switches off automati­
cally at speeds above 10 km/h.
58: Raising the vehicle
The vehicle must be li~ed with the jock first be­
fore the wheel con be removed.
Fig. 279 Sill panels: markings
Fig. 2 80 Sill: pos ition ing the vehicle jack
"'"Activate the vehicle jack mode in the MMI:
!CARI function button> Car system s control
button >
Serv ici ng & che ck s > A ir su sp .: jack
mode > On .
.. Engage the parking brake to prevent your vehi­
cle from rolling unintentiona lly.
.. Move the
selec to r le ver to p osition P .
"'" Find the marking (imprint) on the sill that is
nearest the wheel that will be changed
Iii>-

Emergency assistance
Taking the wheel off/installing the spare
Follow these instructions step-by-step for chang­
ing the wheel .
Fig. 281 Changing a wheel: using the screw driver handle
(with the blade removed) to turn the bolts
Fig. 282 Chang ing a whee l: alignment pin inside the top
hole
After you have loosened all wheel bolts and
raised the vehicle off the ground, remove and re­
place the wheel as follows:
Removing the wheel
• Use the hexagonal socket in the screwdriver
handle
to completely remove the topmost
wheel bolt and set it aside on a
clean surface
¢fig. 281.
• Screw the threaded end of the alignment pin
from the tool kit hand-tight into the empty bolt
hole
c> fig. 282 1) _
• Then remove the other wheel bolts as described
above.
•Ta keoff the wheel leaving the alignment pin in
the bolt hole ¢0 .
l) Applies to vehicles w ith ce ram ic b rake rotors*: Use a sec­
ond alignment pin* (sto red in th e spa re wheel well mo ld­
ing) for the lower hole, follow ing the description for the
firs t alignment pin.
318
Putting on the spare wheel
• Lift the spare wheel and carefully slide it over
the alignment pin to guide it in place ¢0 .
• Use the hexagonal socket in the screwdriver
handle to screw in and tighten all wheel bolts
slightly.
• Remove the alignment pin and insert and tight­
en the remaining wheel bolt slightly like the
rest.
• Turn the jack handle counter-clockwise to lower
the vehicle until the jack is fully released.
• Use the wheel bolt wrench to tighten all wheel
bolts firmly¢
page 315. Tighten them cross­
wise,
from one bolt to the (approximately) op­
posite one, to keep the wheel centered.
(D Note
When removing or installing the wheel, the
rim could hit the brake rotor/ceramic brake
rotor* and damage the rotor. Work carefully
and have a second person help you.
(D Tips
Never use the hexagonal socket in the handle
of the screwdriver to loosen or tighten the
wheel bolts.
- Pull the reversible blade from the screwdriv­
er before you use the hexagonal socket in
the handle to turn the wheel bolts.
- When mounting tires with
unidirectional
tread design
make sure the tread pattern is
pointed the right way¢
page 319.
-The wheel bolts should be clean and easy to
turn. Check for dirt and corrosion on the
mating surfaces of both the wheel and the
hub. Remove all dirt from these surfaces be­
fore remounting the wheel.

C) C0 ....
"' " "' .... 0 0 :r Driver's side cockpit fuse assignment
Fig. 287 Driver side cockpi t: fuse panel with plastic bracket
Fuse panel @ (brown)
No. Equipment
1 Light switch
2 Eme rgency start coil (driver identification)
3 Left rear door control module
4 Head-up display
5 Horn
6 Interior lights (headliner)
Steering column lever, multifunction
8 steering whee l controls, steering wheel
heating
10 Power steering column adjustment
11 Driver door control module
12 Diagnostic connector, 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
s Driver power window
6 Driver's seat (pneumat ic)
7 Panorama roof
8 Dynamic steering
9 Front exterior lighting
10 Windshield/headlight washer system
11 Left rear power window
12 Panorama roof
Front passenger side cockpit fuse
assignment
Fig. 288 Fro nt passenger side cockpit: fuse panel with
plastic bracket
Fuse panel @ (black)
No. Equipment
1 Anti-theft alarm system
2 Transmission control module
3 Front climate control fan
4 Engine supply
6 Engine control module
7 Front passenger door control module
323

Fuses and bulbs
Fuse panel @ (black) Fuse panel@ (black)
8 Front passenger power window 11 Right rear power window
9 ESC control module 12 Front passenger's seat (pneumatic)
10 ESC control module
Luggage compartment fuse assignment
F ig. 289 Luggage compar tment: fuse panel with p lastic brack et
Fuse panel @ (black) Fuse panel@ (black)
No. Equipment
l
ESC button , data logger, diagnostic con-
nector, BCM -1, adaptive light 10
Rear
seat heating, refrigerator, rearview
mirror
11 Electromechanical
steering
2 Networking gateway 12 Selector lever, BCM-2 voltage
3 adaptive air suspension
13 Side assist
4 Park ing aid 14 Engin e control module
5 Steering column lever 15 Starter
6 Suspension control system sensor
7 Belt tensioners, airbag control module 16
Left
headlight (headligh ts with adaptive
lig ht)/head light range control
Heated washer flu id nozzles, Home Link
8 (garage door opener) , night vision system
control module, sport differential, ionizer
9
Electromechan ical parking brake control
module
Fuse panel ® (red)
No. Equipment
l Left reversible belt tensioner
2 Right reversible belt tensioner
324

0 co .... N ,..... N .... 0 0 :c ' Fuse panel @ (red)
3
Starter diagnosis, DC/DC converter (with
Start/Stop system)
4 DC/DC converter (with Start/Stop system)
5 Image processing
6
Right headl ight (headlights with adaptive
light)
7 ESC control module
8
Sound actuator, AEM contro l modu le/
crankcase housing heater
9 Adapt ive cru ise control
10 Transmission control module
11 Climate control system sensors
Fuse panel © (brown)
No . Equipment
1 Electromechanical parking brake
2 Suspension control system sensor
3 Rear Infotainment system control panel
4 Smart mod ule (tank)
5 Front climate control system controls
6 Rear climate control system control panel
7 Networking gateway
8 Refrigerator
9 Special functions interface
10 Cell phone adapter, Bluetooth handset
11 AEM control module
12 Selector lever
13 Interior lighting
14 Rear exter ior light ing
15 Fue l pump
16 Electromechan ica l parking brake
Fuse panel @ (black)
No . Equipment
1 Luggage compa
rtment lid movement-acti-
vated opening
2 Luggage compartment sockets
3 Rea r socket
4 Front cigarette lighter
5 adaptive air suspension
6 1 lS V socket
Fuses and bulbs
Fuse panel @ (black)
7 Electromechanical parking brake
8 Rear seat heating
9 Rear exterior lighting
10 Rear climate control blower
Rear sun shade, closing aid, luggage com-
11 partment lid lock, convenience key, fuel
filler door
12 L uggage compartment lid control module
Fuse panel © (red)
No. Equipment
1 Rear seat adjustment buttons
3 Left rear seat (pneumatic)
s Trailer hitch control module
6 Left rear seat
7 R ight rear seat
8 Trailer hitch control module
9 Tra ile r hitch control module
10 Right rear seat (pneumatic)
Fuse panel® (brown)
No. Equipment
1
Start/Stop system, radio receiver/sound
amplifier
2 Sound amplifier
3
Start/Stop system, Rear Seat Entertain-
ment, radio receiver/sound amplifier
s
Automat ic dimming interior rearview mir-
r or (for Start-Stop system)
6 DVD changer (glove compartment)
7 TV tuner
8 Infotainment system control panel/drives
9 Instrument cluster, analog clock
10 Infotainment system display
11 Radio receiver
12
Rearview camera, peripheral cameras
(parking system)
325

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 ground cable to the negative ground
pos t of the battery manager control unit.
Using the jump start
cable
Both jump start cables must be connected in the
correct order!
Fig. 290 E ngin e compartme nt: co nn ectors for jump start
cables and a charger
Fig. 291 Jump starting using a battery in anot her vehicle:
A -prov idin 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 brake.
328
Connecting the positive cable (red) to the
positive terminal
... Open the cover on the positive terminal
qfig . 290.
1. Secure one end of the pos itive cable (red) to
t he jump start pin
(D q fig. 291 (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 positive terminal @on the bat­
te ry 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 approximately 30 seconds .
... Remove the cables whe n the engi nes are run­
ning. Remove them in reverse order from the
way they were installed.
" Close the cover on the positive 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 parts 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 t hat
the vehicles do not touch.
Ill>

-When connect ing jumper cables, make sure
that they cannot get caught in any mov ing
parts in the engine compartment.
- Before you check anything in the engine
compartment, a lways read and heed a ll
WARNINGS
¢ page 271.
(D Note
Impro per hook-u p of jum per cables can ru in
the generato r.
- Always connect POSITIVE( +) to POSITI VE
( + ), and NEGATIVE( -) to NEGATIVE( -)
g round post of the battery manager contro l
unit.
- Check that a ll screw p lugs on the batt ery
cells are sc rewed in firmly. If not, t ighten
pl ugs p rior to connect ing clamp on negative
b atte ry te rmi nal.
- Please note t hat the procedure fo r con nect­
i ng a jumper cab le as desc ribed above ap­
p lie s specifica lly to the case of yo ur vehicle
b eing ju mp started. When you are g iv ing a
ju mp s tart t o another vehicle, do
not con­
n ect th e neg ative( -) ca b le to the neg ative
( -) t ermin al on t he disch arge d batte ry @
¢ fig . 291 . Instead, secure ly connect the
n egative(- ) cab le to either a solid metal
com ponent that is f irm ly bolted to the en­
gine block o r to the engine bloc k itself. If
the battery that is be ing c ha rged does not
vent to the outs ide, escap ing batte ry gas
could ignite and ex plod e!
Towing with a tow truck
General hints
Yo ur Audi requires special h andling for towing .
The follow ing information is to be us ed by com­
mercia l tow tr uck o pera tors w ho kn ow how to op ­
e rat e the ir equip men t sa fely.
- Never tow your Audi. Towing will cause dam­
age to the engine and transmission .
- Never wrap the safety chains or winch cables
~ around the brake lines. ,..,
~ - To prevent unnecessary damage, your Audi N
8 must be transported with a flat bed truck . 0 :r Emergency situations
-To load the vehicle on to the flat bed , use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢ page 329 and c> page 330.
A WARNING
A veh icle being towed is not safe for passen­
gers. Neve r allow anyo ne to ride in a vehicle
b eing towed, for any reason.
Front towing loop
Fi g. 29 2 Fron t bumper: removing th e cap
Fig. 293 Fron t bumper: insta lling the towing loop
The thread for the towing loop is on the right
s ide of the front bumper beh ind a cap.
.,. Remove the towing loop f rom the vehicle too l
kit.
.,. Press the cap inward with brief, forceful pres­
sure
c> fig. 292 . The cap will loosen from the
bumper .
.,. Tighten the tow ing loop in the threaded open­
ing until it stops
c> fig. 293 and then tighten it
w ith a wheel w re nch .
.,. Afte r usi ng, p la ce th e tow ing loop b ack i n the
-
veh icle tool kit. ..,.
329