lock AUDI A8 2017 Repair Manual

Checking and Filling
fill up at busy gas stations where the seasonal
adjustment is more likely to be mad e in time.
0 Note
- Methanol fuels which do not meet these re­
quirements may cause corrosion and dam­
age to plastic and rubber components in the
fuel system.
- Do not use fuels that fail to meet the speci­
fied criteria in this chapter .
- If you are unable to determine whether or
not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fuels differ­
ent from those specified are not the respon­
sibility of Audi and are not covered under
the New Vehicle or the Emission Control
System Warranties.
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel blends, we
recommend that you switch to unblended
fuel.
Gasoline additives
A pp lies to: ve hicles w ith gasoline engine
A major concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use .
Although gasoline grades differ from one manu­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engine
parts, such as fuel injectors and intake valves. Al­
though most gasoline brands include additives to keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TIER Detergent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline, please go to the official website (www.toptiergas .com) .
268
After an extended period of using inadequate
fuels, carbon deposit build-ups can rob your en­
gine of peak performance.
([) Note
Damage or malfunction due to poor fuel qual­
ity is not covered by the Audi New Vehicle
Limited Warranty.
Refueling
· Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel filler flap .
If the power locking system should fail, you can
still open the flap manually -for detailed instruc­
tions see
~ page 2 70.
You can find the fuel tank capacity of your vehicle
in
~ page 334 .
The label on the inside of the fuel filler flap tells
you the correct fuel for your vehicle. For more in­
formation about fuel specifications, see
~ page 267.
Your vehicle fuel tank has an on board refuelling
vapor recovery system. This feature helps to pre­
vent fuel vapors from escaping from the tank and
polluting the environment while you refuel your
vehicle . In order to fill the tank properly while
protecting the environment, please follow this
refueling procedure carefully.
& WARNING
-Under normal operating conditions, never car­
ry additional fuel containers in your car. Gas
canisters and other containers used to trans­
port fuel can be dangerous. Such containers,
full or empty, may leak and could cause a fire
in a collision. If you must transport fuel to
use for your lawn mower, snow blower, etc .,
be very careful and always observe local and
state laws regarding the use, transportation
and storage of such fuel containers. Make cer­
tain the container meets industry standards
(ANSI/AS TM F8S2 -86).

C) C0 ....
"' ,....
"' .... 0 0 :r <t
(D Note
Never drive your vehicle until the fuel tank is
completely empty. The irregular supply of
fuel can cause misfiring. Gasoline could enter
the exhaust system and damage the catalytic
converter.
Fueling procedure
Fig. 253 R ight rear side of the vehicle: opening the fue l
f iller door
Fig. 254 Fu el fil ler door w ith attached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
Opening the fuel cap
"" Press on the left side of the fuel filler door to
open
c:!;> fig . 2 53.
""Unscrew the tank cap counterclockw ise.
"" Place the cap from above on the open fuel filler
door
c:!;> fig. 254.
Closing the fuel cap
""Screw the tank cap on to the right on the filler
neck until it cannot turn any farther .
""Then press on the left side of the tank door un­
ti l it latches .
Checking and Filling
Once the pump nozzle switches off, the fuel tank
is "full". Do not fill the tank more . Otherwise the
expansion space in the tank will be filled.
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
c:!;> page 267.
The fuel tank capacity of your vehicle is listed in
the
Technical Data section c:!;> page 334.
To avo id fuel spilling or evaporat ing from the fuel
tank always close fuel cap properly and com­
pletely. An improperly closed fuel filler cap may
also cause the MIL lamp
c:!;> page 25 to come on.
A WARNING
Not paying attention when fueling or han­
dling fuel incorrectly can lead to fires, explo­
sions or serious injuries.
- Fuel ignites easily and can cause serious
burns and other injuries.
-
-If you do not switch the engine off when fu­
eling and/or do not insert the fuel nozzle
completely into the tank opening, fuel can
leak out or run over. Leaked fuel can ignite
and start a fire.
- Do not use the telephone while fueling. The
electromagnetic rays can cause sparks,
which can ignite fuel vapors and start a fire .
- Do not sit in your vehicle while fueling. If
you must make an exception and enter your
veh icle aga in while fueling, close the door
and touch metal to discharge static electric­
ity before touching the fuel nozzle. Static
electricity can create sparks, which can ig­
nite vapors when fueling.
- Do not smoke or have an open flame in the
area when fueling your vehicle or filling a
fuel container because this increases the
risk of an explosion.
- For your safety, carrying fuel containers in
your vehicle is not recommended. Whether
full or empty, the container can leak and
cause a fire in the event of an accident.
- If you must make an exception and trans­
port a fuel container, note the following:
269

Checking and Filling
-Never fill the fuel container with fuel
while it is in or on the vehicle. Static elec­
tricity is discharged when filling which can
cause the fuel vapors to ignite and in­
creases the risk of an explosion .
- Always place a fuel container on the
ground before filling .
- Always hold the fuel nozzle completely in
the fuel container when filling .
- If the fuel container is made of metal, the
fuel nozzle must always be in contact with
the container when filling it with fuel. This
prevents static electricity from discharg­
ing.
- Never spill fuel in the vehicle or the lug­
gage compartment . Evaporated fuel is ex­
plosive and increases the risk of serious in­
jury or death.
- Follow legal requirements when using,
storing and transporting fuel containers.
- Make sure the fuel container conforms to
industry standards (ANSI/ASTM F852-86).
0 Note
- Remove spilled fuel from vehicle paint im­
mediately, because it can damage paint.
- 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 will 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, otherwise fuel
can leak out when the vehicle is warming up.
(0 Tips
The fuel filler door on your vehicle does not
lock if you lock the vehicle from the inside .
270
Fuel filler door emergency release
If the cen tral locking system is faulty, the fuel
filler door can be unlocked manually .
Fig. 255 Vehicles with selective ca ta ly tic reduc tion•: righ t
s ide trim panel in the l ugg age compartment
Fig. 256 R ig ht s ide t rim pane l in t he luggage com part·
ment : emerg enc y release mechan ism
.., tn
9 :c
"' a,
The emergency release mechanism is located be­
hind the right side trim panel in the luggage
compartment. In vehicles with selective catalytic
reduction*, remove the vent grille first:
.. Press both tabs@¢
fig. 255 and tilt the vent
grille downward. You can then remove the
grille upward .
.. Loosen the loop
q fig . 256 from the retainer
and then pull on the loop carefully
q (I) . The
fuel filler door releases.
.. Press on the left side of the fuel filler door to
open it~
page 269 , fig. 253 .
(D Note
Only pull on the loop until you feel resistance.
You will not hear it release . Otherwise you
could damage the emergency release mecha­
nism.

Checking and Filling
Coolant addit iv e
The coolant additive is made of anti-freezing and
corrosion protection agents. Only use the fo llow­
ing coolant additives .
Coolant additive Sp ecification
G13 TL 774)
G12++ TL 774 G
These additives may be mixed with each other.
The amount of coolant additive that needs to be
mixed w ith water depends on the climate where
the vehicle will be operated . If the coolant addi­
tive percentage is too low, the coo lant can freeze
and damage the engine.
Coolant addi- Freeze protec-
tive tion
Warm regions min
. 40%,
min. -13 °F
max. 45% (-25 °C)
Cold regions min . 50%, max. -40 °F
max. 55% (-40
°C)
(D Note
-Before the start of winter, have your author­
ized Audi dealer or authorized Audi Service
F ac ility check if the coolant additive in you r
vehicle matc hes the percentage appropriate
fo r the clim ate. This is espe cially important
when driving in colder climates .
-If the appropriate coolant addi tive is not
available in an emergency, do not add any
other additive for risk of damaging the en ­
gine. If this happens, only use water and re­
store the correct mixture ratio with the
specified coolant additive as soon as possi­
ble.
- Only refill with new coo lant.
- Radiator sealant must not be mixed with
the coo lant.
278
Adding coolant
Fig. 261 E n g in e compartment: coolant expansion tank
cover
Observe the safety precautions ¢ .&. in Working
in the engine compartment on page 2 71.
Check ing the engine coolant level
.,. Park the vehicle on a level surface.
.,. Switch the ignit ion off.
.,. Read the coolant level on the coolan t expansion
tank
¢page 274. The coolant leve l must be be­
tween the M IN and MAX markings when the en­
gine in cold . When the engine is warm it can be
slightly above the MAX marking .
Adding coolant
Requirement: there m ust be a residua l amount of
coolant in the expansion t ank
~ CD.
.,. Let the engine cool down .
.,. Place a cloth
over the coolant expansion tank
cap and unsc rew the cap cou nte rclockw ise
~ .&. -
.. Add coolant mixed in the correc t ratio
~ page 277 up to the MAX marking.
.,. Make sure that the fluid level remains stable.
Add more coolant if necessary .
.,. Close the cap securely .
Coo lant loss usually indicates there is a leak . Im­
med iate ly drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected.
If the
cooling system is not leak ing, a loss can come
from the coolant boiling through overheat ing
and being pushed ou t of the cooling system .

Care and cleaning Component Situation Solution
Exhaust tail pipes
Road salt Water, cleaning solution suitab le for stainless steel, if nee-
essary
Decorative parts/ Deposits Mild
soap solution a), a cleaning solution suitable for stain-
Trim less stee l, if necessary
Paint Paint damage Refer to th e paint number on the vehicle data label, repair
with touch up paint ~
page 333
Spilled fuel Rinse
with water immediately
Surface rust Rust remover, then protect with hard wax; for questions,
consult an author ized Audi dealer or authorized Aud i Serv-
ice Facility.
Corros ion Have it removed by an authori zed Aud i dea ler or author-
ized Audi Service Facility.
Water no longer Pr
otect wi th hard wax (at least twice per year)
beads on the surface
of clean paint
No shine even though Treat wit h suitable polish; then apply paint protectant if
paint has been pro- the polish that was used does not contain any protectant
tected/paint looks
poor
Deposits such as in- Dampen with water immediately and remove with a micro-
sects, bird dropp ings, f iber cloth
tree sap and road salt
Grease-based con- Remove immediately with a mild soap solution a ) and a
taminants such as soft cloth
cosmetics or sunblock
Carbon parts Deposi ts clean the same way as painted parts ~ page 306
a) Mild soap so lution: maxim um two tabl espoo ns of n eu tra l s oap in 1 quart Cl lite r) of w ater
Interior cleaning
Component Situation Solution
Windows
Deposits Glass cleaner, then wipe dry
Decorative parts/ Deposits Mild soap
solution al
Trim
Plastic parts
Deposits Damp clo1th
Heavier deposits Mild soap solution
al, detergent-free pla stic clean ing solu-
tion, if necessary
Displays Deposits Soft cloth with LCD cleaner
Controls Deposits Soft brush, then
a soft cloth with a mild soap so lution al
Safety belts Deposits Mild soap solution al, allow to dry before letting them re-
tract
308
...

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 '<t
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 ....
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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

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.

Emerg ency assis ta nce
There are some restrictions on the use of the
spare tire. The spare tire has been designed spe­
cifically for your type of vehicle. Do not replace it
with the spare tire from another type of vehicle.
There are different types of spare tires availab le
depending on the equipment
c::> page 320.
Remo ving t he spare tire
• Lift the cargo floor by the plast ic handle
~fig. 283.
• Hook the hand le into the luggage compartment
seal.
• Turn the handwhee l counter-clockwise and re-
move it.
• Remove the spare tire.
Sn ow c hain s
For technica l reasons, the use of snow chains on
the compact spare tire is not permitted.
If you have to drive with snow chains and a front
tire fa ils, mount the spare wheel in place of a
rear tire. Insta ll the snow cha ins on the rear tire
that you removed, and install that in p lace of the
front tire that failed.
A WARNING
-After installing a spare t ire, the tire pres­
sure must be checked as quickly as poss ible.
- Do not drive faster than 50 mph (80 km/h)
with a compact spare tire. Driving faster
than that increases the risk of an accident.
- To reduce the risk of an accident, avo id fu ll­
throttle acceleration, heavy braking, and
fast cornering with the compact spare t ire.
- To reduce the risk of an accident, never drive with more than one compact spare tire.
- Norma l summer or winter tires must not be
mounted on the compact spare wheel rim.
A WARNING
- Never use the spare tire if it is damaged or if
it is worn down to the tread wear indicators.
- If the spare tire is more than 6 years o ld,
use it only in an emergency and with ex­
treme caution and careful dr iving.
- The spare tire is intended on ly for tempora­
ry and short-term use. It should be replaced
320
as soon as possible with the normal whee l
and tire.
- For technical reasons, the use of tire chains
on the spare tire is not permitted. If it is
necessary to drive w ith tire chains, the spare
wheel must be mounted on the front axle in
the event of a flat in a rear t ire. The newly
ava ilable front wheel must then be installed
in place of the rear wheel w ith the flat tire.
Installing the tire chain befo re mounting
the wheel and tire is recommended.
- Loose items in the passenger compa rtment
can cause se rious personal injury during
ha rd braking or in an accident. Never store
the inflatable spare tire or jack and tools in
the passenger compartment .
Spare tire types
Fig. 284 Luggage compartment: space-sav ing spare tire
(compact spare tire)
(D Spare tire*
If you have to mount a spare tire oppos ite the
runn ing direction because of a flat tire, drive
ca refully and restore the cor rec t r unn ing d irec­
tion as soon as poss ib le
¢page 319.