2018 AUDI A8 engine coolant

Checking and Filling
Cl osing the ho od
~ Push the hood down until you override the
force of the strut .
~ Let the hood fall light ly into the latch. Do not
press it in.
c::> .&_ .
A WARNING
-Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
Engine compartment overview
The most important check points .
-For safety reasons, the hood must always be
closed securely while driv ing. Because of
this, always check the hood after closing it
to make sure it is latched correctly . The
hood is latched if the front corners cannot
be lifted.
-If you notice that the hood is not latched
while you are driving, stop immed iate ly and
close
it, because d riving when the hood is
not latched increases the r is k of an accident.
Fig. 258 Typical locatio n of the rese rvoir and the engi ne o il fille r open ing
(D Washer fluid reservoir (Q) c::> page 281
@ J ump start point(-) with hex head screw
c::> page 280, c::> page 32 7
® Jump start point(+) under a cover
c::> page 280, c::> page 32 7
@ Engine oil label * w ith VW standard
c::> page 2 75
274
® Engine oil filler opening ( page 2 76
@ Brake fl uid reservo ir ((0)) c::> page 2 79
(J) Coolant reservoir (-L) c::> page 2 78
The engine oil filling opening (item @) may be
l ocated in a different area depending on the en-
gine version.
.,.

u. co .... N
" N .... 0 0 :c ' @ For the sake of the environment
-Oil should never enter the sewer system or
come into contact with the ground.
- Pay attention to legal requirements when
disposing of empty oi l containers .
Changing the engine oil
We recommend that hove your oil changed by on
authorized Audi dealer or a qualified service sta­
tion .
Before you check anyt hing in the engine compart ­
ment,
alw ays re ad and h eed all W ARNINGS ¢ &
in Working in the engine comportment on
page 272.
The engine oil must be changed according to the
intervals specified in your Warranty
& Mainte­
nance booklet . This is very important because the
lubricating properties of oil diminish gradually
during normal vehicle use.
Under some circumstances the engine oi l should
be changed more frequently. Change oil more of­
ten if you drive mostly short distances, operate
the vehicle in dusty areas or under predominantly
stop-and-go traffic condit ions, or have your vehi­
cle where temperatures remain below freezing
for extended periods .
Detergent additives in the oil will make fresh oil
look dark after the engine has been running for a
short t ime . Th is is normal and is not a reason to
change the oil more often than recommended .
Because of the problem of proper disposal, along
with the special tools and necessary expertise re­
qu ired, we strongly recommend that you have
your oil changed by an authorized
A ud i d ea ler or
a qualified se rvice station .
If you choo se to chang e your o il y ou rse lf, please
note the following important information:
A WARNING
T o reduce the r isk of personal injury if you
must change the engine oil in your ve hicle
yourse lf:
- Wear eye protection .
-
Check ing and F illing
- To reduce the risk of burns from hot engine
oil, let the engine cool down to the touch.
- When removing the oil drain p lug with your
fingers, stay as far away as possible. Always keep your forearm parallel to the ground to
help prevent hot oil from running down your
arm.
- Drain the oil into a container designed for
this purpose, one large enough to hold at least the total amount of oil in your engine.
- Engine oil is poisonous. Keep it well out of
the reach of children .
- Continuous contact with used engine o il is
harmful to your skin. Always protect your
skin by wash ing oil off thoroughly with soap
and wate r.
@ Note
Never mix oil additives with your engine oil.
These add itives can damage your engine and
adversely affect your Audi L imited New Vehi­
cle War ranty .
@ For the sake of the environment
-Before chang ing your o il, first make sure
you know where you can properly d ispose of
the used oil.
- Always dispose of used engine o il properly .
Do not dump it on garden so il, wooded
areas, i nto open streams o r down sewage
dra ins.
- Recycle used eng ine o il by tak ing it to a used
eng ine oi l collection fac ility in yo ur area, or
c ontact a se rvice station.
Cooling system
Coolant
The eng ine cooling system is filled w ith a mixture
of purified water and coolant additive at the fac­
tory. This coolant must not be not changed .
The coo lant level is mon itored through
the . in­
dicator
light¢ page 20. However, we do recom­
mend occasionally checking the coolant level
manually .
.,.
277

Checking and Filling
If you must add coolant, use a mixture of water
and coolant additive . Mixing the coolant additive
with distilled water is recommended.
Coolant additive
The coolant additive is made of anti-freezing and
corros ion protection agents. Only use the follow ­
ing coo lant additives .
Coolant additive Specification
Gl2evo
TL 774 L
Gl2++ TL 774 G
Gl3
TL 774 J
These additives may be mixed wi th each othe r.
The amount of coo lant additive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi ­
tive percentage is too low, the coo lant can free ze
and damage the engine.
Coolant addi- Freeze protec-
tive tion
Warm regions min.
40%, min. -13 °F
max . 45% (-25 °()
C old regions min.
50%, max. -40 °F
max.
55% (-40 °C)
@ Note
-Before the start of winter, have an author­
ized Audi dealer or authorized Audi Service
Faci lity check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates .
-If the appropriate coolant additive is not
available in an emergency, do not add any
other addit ive for risk of damaging the en­
g ine . 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 coolant.
-Radiator sealant must not be mixed w ith
the coolant.
278
Adding coolant
Fig. 260 Eng in e compar tment : coolant exp ansion tank
cover
Observe the safety precautions ~.&, in Working
in the engine compartment on page 2
72.
Checking the engine coolant level
~ Park the vehicle on a level surface .
~ Switch the ignit io n off.
~ Read the coolant level on the coolant expansion
tank ~ page 2 74. The coolant leve l must be be­
tween the MIN and MAX markings when the en­
gine in co ld. When the engine is warm it can be
slightly above the MAX marking,
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion
tank ~(©) .
~ Let the engine cool down .
~ Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockwise
~.&. -
~ Add coo lant mixed in the correct ratio
~ page 277 up to the MAX marking.
~ Make sure that the f luid level remains stable.
Add more coolant if necessary .
~ Close the cap securely .
Coo lant loss usually indicates there is a leak . Im ­
mediate ly drive your vehicle to an authorized
Audi dealer or authorized Audi Service Fac ility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant bo iling t hrough overheat ing
and being pushed out of the cooling system .

lL
_& WARNING
-The cooling system is under pressure. Do
not open the coolant expansion tank cap
when the engine is hot. This increases the
risk of burns .
- The coolant additive and the coolant can be dangerous to your health. For this reason,
keep the coolant in the original container
and away from children. There is a risk of
poisoning.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
CD Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the engine. If this is the case, do not
continue driving. See an authorized Audi deal­
er or authorized Audi Service Facility for assis­
tance.
Brake fluid
N N
-N
" co IX)
Fig. 261 Engine compartment: cap on brake flu id reservoir
Observe the safety precautions ~&. in Working
in the engine compartment on page 2
72.
Checking the brake fluid level
.. Read the brake fluid level on the brake fluid
reservoir
~ page 274, fig. 258. The brake fluid
level must be between the MIN and MAX mark­
ings~&. -
~ The brake fluid level is monitored automatically .
...... N ...... 0 0 :c ' Checking and Filling
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dealer or authorized Audi Service
Facility.
_& WARNING
-
- If the brake fluid level is below the MIN
marking, it can impair the braking effect
and driving safety, which increase the risk of
an accident . Do not continue driving . See an
authorized Audi dealer or authorized Audi
Service Facility for assistance.
- If the brake fluid is old, bubbles may form
in the brake system during heavy braking.
This would impair braking performance and
driving safety, which increases the risk of an
accident.
- To ensure the brake system functions cor­
rectly, only use brake fluids that comply
with VW standard 50114 or FMVSS-116 DOT 4.
CD Note
- If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
- Do not get any brake fluid on the vehicle
paint, because it will corrode the paint.
Battery
General warnings about batteries
Because of the complex power supply, all work
on batteries such as disconnecting, replacing,
etc., should
only be performed by an authorized
Audi dealer or authorized Audi Service Facility
~ .&. .
The term "vehicle battery" refers to the 12 Volt
battery in your vehicle.
Detailed warnings for the vehicle battery:
® Wear eye protection.
b. Bat~ery acid is highly corrosive. Wear pro-
~ tect1ve gloves and eye protection. Ill>-
279

u. co .... N
" N .... 0 0 :c ' today's automobiles, have steadily reduced the
scope of maintenance and repairs which can be
carried out by veh icle owners.
Al so , sa fet y a nd
en vironmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transm ission parts wh ich a n owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, test ing devices and other
equ ipment available to specially trained work ­
shop personnel in order to assure proper per­
formance, re liability a nd safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliab il ity of your
ve hicle and even void your veh icle warranty .
Therefo re, proof of se rvicing in accordance w ith
the ma intenance schedule may be a condition fo r
upho ld ing a possib le warranty claim made within
the warranty period.
Above all , ope rational safety can be adversely af­
fected, creating unnecessa ry risks fo r yo u and
your passengers.
I f in do ubt about any servicing, have it done by
your author ized Audi dealer or any other prope rly
eq uipped and qua lified workshop. We strongly
u rge yo u to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled mainte ­
nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your veh icle running properly .
Pe rforming limit ed maint enanc e yourself
The fo llowing pages describe a limited number of
procedures which can be performed on your ve hi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oug hly read a ll of the app licable text and careful­
ly follow the instructions g iven . Always rigorously
observe the
W ARNINGS prov ided .
Before you check an ything in the eng ine com ­
partment , alw ays read and he ed all WARNINGS
c:> &. and c:> &. in Working in the engine compart­
ment on page 2
72 .
Con sum er In form ation
A WARNING
--
- Ser ious personal injury may occur as a result
of improperly performed maintenance, ad ­
justments or repairs .
- Always be extremely careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never risk pe rsonal inj ury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fu lly famil iar with these
or other proced ures with respec t to the ve­
h icle, or are uncerta in how to pro ceed.
- Do not do any work without the proper tools
and eq uipment. Have the necess ary wo rk
done by your authorized Audi dealer or an­
other proper ly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the area around or touch the radi­
ator fan.
It is temperature controlled and
can switch on suddenly - even when the en­
g ine is off . The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain tempe rature and will cont inue to run
until the coolant temperature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work underneath
the vehicle. The jack suppl ied with the veh i­
cle is no t adequate for this pu rpose and
could collapse caus ing serious personal in­
jury.
- If you must wor k unde rne ath the vehicle
with the wheels on the ground, always make
sure the vehicle is on level ground, that the
wheels a re always sec urely blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic transmiss ion) is in
"P"
(Park position) and the pa rk brake is ap­
plied.
337

Consum er Info rmation
@ For the sake of the environment
- Changing the engine settings wi ll adverse ly
affect emission leve ls. Th is is detrimental to
the env ironment and increases fuel con ­
sumption.
- A lways observe environmenta l regu lations
when disposing of o ld engine o il, used brake
flu id, d irty engine coolant, spent batteries
or worn out tires.
- Undeployed airbag modules and pretension­
ers might be classif ied as Perchlorate Mate­
rial -spec ia l handl ing may apply, see
www.dtsc.ca.gov/hazardouswaste/ perch lorate. Whe n the vehicle o r parts of
the rest raint system including airbag mo d­
ul es safety bel ts w it h pre tensioners are
scrapped, all applicable laws and regula ­
tions must be observed. Yo ur autho rized
A udi dealer is familiar with these require ­
ments and we recommend that you have
your dealer perform this service for you.
Accessories and technical changes
Additional accessories and parts
replacement
Always consult on authorized Audi dealer before
purchasing accessories.
Audi ve hicles that are constructed with advanced
materials like Steel/Alum inum (Hybrid construc­
tion), Aluminum (Aud i Space Frame), and/or A lu­
minum/Carbon F iber (Ultra Advanced L ight
We ight Materials) are as un ique as the ir drivers .
Therefo re, the ava ilability of ce rtain parts needed
for repai r, restorat ion, or reco nstr uction w ill be
rest ric ted, or p arts w ill be unav ailable, if the ve ­
h icl e is not repa ired a t an a uth o rized Aud i colli­
sion repair facili ty . This in cl udes but is not limit ­
ed to structura l parts w hic h require specia lized
training and equipment to restore their crash ­
worthiness back to the orig inal NHTSA and IIHS
performance.
Your vehicle incorporates the latest safety design
features ensuring a hig h standard of active and
passive safety.
338
This sa fety could be com promised by non -ap ­
proved changes to the vehicle . For t his reason, if
parts have to be rep laced, p lease observe the fol ­
l owing points when install ing additional accesso ­
ries:
Approved Audi accesso ries and gen uine A udi
parts are avai lab le from a uthorized Aud i dea le rs .
These dea le rs al so have t he necessa ry fa cilit ies,
tools and trained specialists to install the parts
and accessories properly .
A WARNING
Using the wrong spare parts or using non -ap ­
p roved accessories can cause damage to the
vehicle and serious personal i njury.
- Use on ly accessories express ly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially des igned to be used on your vehicle.
- Do not use license p late brac kets in the
front area that are d if f erent from the one
installed at the factory, or add additional li­
cense plate brackets.
- Never install accessor ies such as telephone
cradles or beverage holders on airbag covers
or w ith in the airbag dep loyment zones. Do­
ing so will increase the risk of injury if a ir­
bags are triggered in an accident!
- Before you check anyth ing in the eng ine
compa rtme nt, always read a nd heed all
WARN INGS
~page 272.
@ Note
-If items other than genu ine A udi spare
parts, add-on equipment and accessory
i t ems are used o r if repa ir wor k is not per­
formed according to specified methods, th is
c an resul t in seve re damage to you r vehi­
cl e's eng ine a nd body ( such as cor rosion)
and adve rsely aff ec t your ve hicle's war ran ty.
- Th e innovat ive alum inum con cep t of yo ur
Audi AB means t hat all se rvi cing, re pairs o r
ot her wor k on t he ve hicle body mus t be ca r­
ried out exclus ively by an Aud i workshop .
- I f emer gency rep air s mus t be pe rformed
elsew here, have the vehicle exam ined by an
authorized A udi dealer as soon as possib le .
.,,.

Index
Emergency operation
Fr ont passenger 's door . . . . . . . . . . . . . . . . 32
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 271
Luggage compartment lid . . . . . . . . . . . . . . 36
Panoram a glass roof . . . . . . . . . . . . . . . . . . 40
Sliding/tilting sunroof . . . . . . . . . . . . . . . . . 39
Sunshade (roof) . . . . . . . . . . . . . . . . . . . . . . 40
E mergency re lease
Parking lock . . . . . . . . . . . . . . . . . . . . . . . . . 88
Emergency starting . . . . . . . . . . . . . . . . . . . 327
Emissions control system . . . . . . . . . . . . . . 272
Energy consumers (efficiency program) . . . . 13
Energy management . . . . . . . . . . . . . . . . . . 131
E ngine
Start/Stop system . . . . . . . . . . . . . . . . . . . . 78
Starting/stopping . . . . . . . . . . . . . . . . . . . . 76
Starting with jumper cables . . . . . . . . . . . 327
E ngine compartment . . . . . . . . . . . . . . . . . . 272
Opening/closing the hood . . . . . . . . . . . . . 273
Engine oil
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Checking oil level . . . . . . . . . . . . . . . . . . . . 275
Con sumption . . . . . . . . . . . . . . . . . . . . . . . 275
Engine sound . . . . . . . . . . . . . . . . . . . . . . . . 111
Entering a destination . . . . . . . . . . . . . 166, 170
Entering an address . . . . . . . . . . . . . . . . . . 166
From the map . . . . . . . . . . . . . . . . . . . . . . 167
La st destinations . . . . . . . . . . . . . . . . . . . . 169
Starting point (presentation mode) . . . . . 173
Entering letters (speller) . . . . . . . . . . . . . . . 138
E ntering numbers/symbols (speller) . . . . . . 138
Entry assistance . . . . . . . . . . . . . . . . . . . . 58, 76
Environment Environmentally-friendly/ economical driv -
ing ..... ... .. .. ................ ... .. 74
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Proper disposal of drained engine o il . . . . 277
Unleaded fu el . . . . . . . . . . . . . . . . . . . . . . . 268
EPC (engine control) . . . . . . . . . . . . . . . . . . . . 23
ESN
refer to Serial number (radio) ... .... .. .
Event Data Recorder (EDR) ........ .. .. .
E xterior lighting 179
133 43
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . 47
344
F
Factory default settings
Multi Media Interface . . . . . . . . . . . . . . . . 207
R5E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Fader(sound) ... .. .. .. ............. .. 206
Fastening Booster seats . . . . . . . . . . . . . . . . . . . . . . . 257
Convertible child safety seats . . . . . . . . . . 256
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 255
Fast forwarding/rewinding (audio/video
file) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Fast forwarding (audio/video file) . . . . . . . . 191
Favorite (navigation) . . . . . . . . . . . . . . 169, 173
File format (media) . . . . . . . . . . . . . . . . . . . 187
Floor mats.. .. .. .. .. .. ............. .. 213
Folding table . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Free text search
T elephone. . . . . . . . . . . . . . . . . . . . . . . . . . 152
Freeze protection Coolant additive . . . . . . . . . . . . . . . . . . . . . 277
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . . 231
Frontal collisions and the laws of physics . . 220
Front center armrest . . . . . . . . . . . . . . . . . . . 55
Front passenger seat adjustment . . . . . . . . . 58
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Child restraints in the front seat . . . . . . . . 228
also refer to Seats . . . . . . . . . . . . . . . . . . . . 54
Fuel Additives. . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Blended gasoline . . . . . . . . . . . . . . . . . . . . 268
Current consumpt ion . . . . . . . . . . . . . . . . . . 12
Fuel filler neck . . . . . . . . . . . . . . . . . . . . . . 269
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 9, 10
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 334
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Gasoline additives . . . . . . . . . . . . . . . . . . . 269
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 268
Recommendation . . . . . . . . . . . . . . . . . . . . 268
Saving fuel ...... .. .. ............ 74, 111
Fueling Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 270
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 334