2016 AUDI A8 coolant temperature

& WARNING
-The cooling system is under pressure and
can get very hot. Reduce the risk of scald ing
from hot coolant by following these steps.
- Turn off the engine and allow it to coo l
down.
- Protect your face, hands and arms from
escaping flu id and steam by cover ing the
cap w ith a la rge, thick rag.
- Turn the cap slowly and very carefully in a
counter-clockwise d irection while applying
light, downward p ressure on t he top of
the cap.
- T o avoid bei ng bu rned, do not spill anti­
free ze or coo la nt on the e xhaust sys tem or
hot engi ne parts. Under certa in cond i­
tions, the ethylene glycol in eng ine cool ­
ant can catch fire .
- An tifreeze is poisonous. Always store anti­
freeze in its original con tainer and well ou t
of the reach of children.
- If you dra in the coolant, it m ust be ca ught
and safely stored in a proper conta iner
clearly marked "poison" .
(D Note
-Do no t add coolant if the expa nsion tank is
empty. Air cou ld enter the cooling sys tem
and damage the eng ine. If this is the case,
do not continue driving. Seek professional
ass istance.
- Coolant po llutes the environment and could
ca use an eng ine fire . Excess coolant will be
fo rced o ut through the pressure relief valve
i n the cap when the eng ine becomes hot.
- If, in an emergency, only wate r can be add­
ed, the correct ratio between water and an­
tifreeze¢
page 22 7 must be restored as
soon as possib le.
@) For the sake of the environment
Drained coolant sho uld not be reused. Always
dispose of used coolant while observing all
,...,
"' environmental regulat io ns. 0 J:
'SI: ,..., -
Ch eck ing and Filling
Rad iator fan
The radiator fan switches on automatically by it­
self .
The radiator fan is driven by the engine via the V­
belt. The v iscous clutch regulates t he speed of
the fan accord ing to the temperature of the cool­
ant .
An auxiliary e lectr ic radiator fan* sw itches on and
off depend ing o n coo lant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fan
can continue ru nning for up to 10 m inutes -even
with the ignition off. It can even switch on aga in
later by itself¢,& , if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en­
gine compartment, or
- the engine compartment heats up beca use the
veh icle is parked in intense sunlight.
& WARNING
- To reduce the r isk of persona l injury neve r
touch the radia to r fan .
- The auxiliary e lectr ic fan is temperature
controlled and can switch on s uddenly even
when the engine is not ru nning .
- The a uxiliary radiator fan sw itches on auto­
mat ically when the eng ine coolant reaches a
certa in temperature a nd will continue to run
until the coolant temperature d rops.
229

Consumer inf orm ation
today's a utomo biles, have steadily re duced the
scope of maintenance and repairs whic h can be
carried out by veh icle owners.
Also , sa fet y and
en vironmental
concerns place very strict limits
on the nature of repairs and adjustmen ts to en­
g ine and transmission parts wh ich an owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, testing devices and other
equ ipment available to specially trained work ­
shop personnel in order to assure proper per­
forma nce, re liability and safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliab ility of your
ve hicle and eve n void your vehicle warranty .
Therefo re, proof of se rvicing in a ccordance w ith
the m aintenance sched ule may be a condition for
up ho ld ing a possible wa rranty claim made within
the wa rranty pe riod.
Above all , ope rational safety can be adversely af­
fected, cre ating unne cessa ry risks fo r you and
your passengers.
I f in doubt about any servicing, have it done by
your author ized Audi dealer or any other properly
eq uipped and qualified workshop . We strongly
urge you to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled mainte ­
nance and necessa ry repairs. Your dealer has the
facilities, origina l parts and tra ined specialists to
keep your veh icle runn ing properly.
P e rforming limited maintenance yourself
The fo llow ing pages describe a limited number of
procedures whic h can be performed on your vehi­
cle with ordinary tools, should th e need arise and
tra ined personnel be unava ilable. Before per­
forming any of these procedures, always thor­
ough ly read all of the app licab le text and carefu l­
ly follow the instructions g iven . A lways rigorously
observe the
WARNINGS prov ided .
Befo re yo u check anything in the engine com ­
partment, always read and heed all WARNINGS
c::> & and c::> & in Working in the engine compart­
ment on page 220 .
282
A WARNING
-
-Ser ious personal in jury may occur as a result
of imp roperly performed maintenance, ad­
justments or repairs .
- Always be extreme ly careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never r is k personal in jury.
- Do not attempt any of the mainte nance,
checks or repairs described on the following pages if you are no t fu lly fam iliar with these
or other proce dures with respect to the ve­
hicle, o r are uncert ain how to p ro ceed.
- Do not do any work wi thout the prope r tools
a nd equi pmen t. H ave the necess ary wo rk
done by your authorized Au di dealer or an ­
other properly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the a rea around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off . The radiator fan switches o n au­
tomatically when the coolan t reaches a cer­
tain tempe ra ture an d w ill cont inue to run
until the coolant tem pe rature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supp lied wi th the veh i­
cle is no t adequate fo r thi s pu rpose a nd
could collapse causing serious personal in­
Jury .
- If you must wor k unde rneath the vehicle
w ith the wheels on t he g roun d, always make
sure the vehicle is on level ground, that the
wheels are always sec urely blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic t ransm iss ion) is in "P"
(Park position) and the pa rk brake is ap-
plied.
~

A
A/C (automatic climate control) . . . . . . . . . . 77
ABS
refer to Anti-lock braking system . . . . . . . 190
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Active lane assist . . . . . . . . . . . . . . . . . . . . . . 99
Activating and deactivating . . . . . . . . . . . . 100
C leaning the camera area . . . . . . . . . . . . . 207
Descr iption . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Instrument cluster indicator light . . . . . . 100
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Notes on instrument cluster display . . . . . 100
Sett ing the steering wheel vibration . . . . 101
Adaptive air suspension/sport . . . . . . . . . . . 106
Adapt ive cruise control . . . . . . . . . . . . . . . . . . 90
C leaning the sensor . . . . . . . . . . . . . . . . . . 207
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Request for driver intervention . . . . . . . . . . 95
Stop-and-go traffic . . . . . . . . . . . . . . . . . . . 94
Adapt ive Light (defective) . . . . . . . . . . . . . . . 22
AdBlue .. .. .. .. ................. ..... 216
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Opening the tank door . . . . . . . . . . . . . . . . 217
Refilling . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Adding Engine coolant . . . . . . . . . . . . . . . . . . . . . . 228
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Additives Engine oil 225
Adjustab le steer ing column . . . . . . . . . . . . . . 80
Adjusting Air distribution (automat ic cl imate control) .78
Instrument illuminat ion . . . . . . . . . . . . . . . 51
Steering column . . . . . . . . . . . . . . . . . . . . . . 80
Temperature (automatic climate control) . 78
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . 164
Advanced Airbag-System . . . . . . . . . . . . . . 150
Advanced Airbag System components . . . 152
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Ch ild restraints . . . . . . . . . . . . . . . . . . . . . 170
Components (front a irbags) . . . . . . . . . . . 152
Danger of fitting a child seat on the front
passenger seat . . . . . . . . . . . . . . . . . . . . . . 147
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Fr ont airbags ................. .. 150, 151
Index
How do the front airbags work? . . . . . . . . 154
How many airbags does my vehicle have? 152
How the Advanced Airbag System compo-
nents work together . . . . . . . . . . . . . . . . . 154
Important information . . . . . . . . . . . . . . . 146
Important safety instructions on the knee
airbag system . . . . . . . . . . . . . . . . . . . . . . . 162
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 160
Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 156
PASSENGER AIR BAG OFF light . . . . . . . . . 156
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Safety instructions . . . . . . . . . . . . . . . . . . . 158
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 162
S ide curta in a irbags . . . . . . . . . . . . . . . . . . 165
Warning/indicator lights . . . . . . . . . . . . . . . 18
Warning/Indicator lights . . . . . . . . . . . . . 156
Weight-sensing mat . . . . . . . . . . . . . . . . . 169
When must the system be inspected? 156
Aircraft Transporting your vehicle 274
Alcantara Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Alignment pin (tire changing) . . . . . . . . . . . 256
All season ti res . . . . . . . . . . . . . . . . . . . . . . . 2 51
All Wheel Dr ive . . . . . . . . . . . . . . . . . . . . . . . 195
Alternator
refer to Generato r . . . . . . . . . . . . . . . . . . . . 15
Amb ience lighting . . . . . . . . . . . . . . . . . . . . . 50
Anti-freeze Windshield washer system . . . . . . . . . . . . 234
also refer to Engine coolant . . . . . . . . . . . 227
Anti-lock braking system . . . . . . . . . . . . . . . 190
Warning/indicator lights . . . . . . . . . . . . . . . 18
Anti-slip regulation . . . . . . . . . . . . . . . . . . . 190
Warning/indicator lights . . . . . . . . . . . . . . . 18
Anti-theft systems Electronic immobilizer . . . . . . . . . . . . . . . . . 31
ASR
refer to Anti-slip regulation . . . . . . . . . . . 190
Audi braking guard
refer to Braking guard . . . . . . . . . . . . . . . . . 90
Audi drive select
refer to Drive select . . . . . . . . . . . . . . . . . . 106
Audi Service Repair Manuals and Literature 281
AUTO Automat ic climate control . . . . . . . . . . . . . . 78
Automat ic headl ights . . . . . . . . . . . . . . . . . 46
285

Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Starting with jumper cables . . . . . . . . . . . 271
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
E ng ine compartment . . . . . . . . . . . . . . . . . . 222
C losing the hood . . . . . . . . . . . . . . . . . . . . 221
Opening the hood . . . . . . . . . . . . . . . . . . . 220
Safety instructions . . . . . . . . . . . . . . . . . . . 220
Working in the engine compartment . . . . 220
E ng ine coolant . . . . . . . . . . . . . . . . . . . . . . . 227
Adding coolant . . . . . . . . . . . . . . . . . . . . . . 228
Checking the engine coolant level. . . . . . . 227
Expansion tank . . . . . . . . . . . . . . . . . . . . . . 227
Radiator fan . . . . . . . . . . . . . . . . . . . . . . . . 229
Temperature gauge . . . . . . . . . . . . . . . . . . . 10
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Adding . ... .. ................ ..... . 225
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Checking oil level . . . . . . . . . . . . . . . . . . . . 225
Checking the engine oil level . . . . . . . . . . . 224
Consumption . . . . . . . . . . . . . . . . . . . . . . . 225
Indications and conditions requiring extra
checking . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 17
O il consumption . . . . . . . . . . . . . . . . . . . . . 223
Pressure malfunction . . . . . . . . . . . . . . . . . 16
Recommended oil check intervals . . . . . . . 224
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 21
Specification and viscosity . . . . . . . . . . . . . 223
E ng ine sound . . . . . . . . . . . . . . . . . . . . . . . . 106
Engine speed limitation . . . . . . . . . . . . . . . . . 20
Engine start-stop mode
r e fer to Start-Stop-System . . . . . . . . . . . . . 87
E ntry assistance . . . . . . . . . . . . . . . . . . . . . . . 64
Environment Catalytic converter . . . . . . . . . . . . . . . . . . . 197
Diesel particulate filter . . . . . . . . . . . . . . . 198
Disposing of your vehicle battery ...... . 234
Driving at high speeds . . . . . . . . . . . . . . . . 200
Fuel. .. .. .. .. .. ............. .. .. .. . 214
L eaks under your vehicle . . . . . . . . . . . . . . 220
Letting the vehicle stand and warm up . . . 200
Proper disposal of drained brake fluid . . . 230
Proper disposal of drained engine coolant 228
Proper disposal of drained engine oi l 225, 226
Recycling used engine oil . . . . . . . . . . . . . 225
Unleaded fuel . . . . . . . . . . . . . . . . . . . . . . . 212
What should I do with an old battery? . . . 234
Index
EPC
refer to Electronic power control (EPC) . . . 19
ESC Automatic post-collision braking system . 191
also refer to Electronic Stabilization Control
(ESC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Event Data Recorder (EDR) . . . . . . . . . . . . . 189
Exhaust tail pipes Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Expansion tank . . . . . . . . . . . . . . . . . . . . . . . 227
Exterior lighting . . . . . . . . . . . . . . . . . . . . . . . 46
Exterior mirrors Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Dimming .. .. .. . ... ............... .. . 52
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Exterior temperature display . . . . . . . . . . . . . 23
F
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . . . 176
Convertible child safety seats . . . . . . . . . . 17 4
Infant seats ... .. .. ................. 173
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Folding table . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 134
For the sake of the environment
Environmentally-friendly driving . . . . . . . 199
Gasoline fumes and the env ironment.. .. 214
Reducing engine noise by early upshifting . 10
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Saving fuel by early upshifting . . . . . . . . . . 10
Four zone automat ic climate control . . . . . . 77
Front airbags Description . . . . . . . . . . . . . . . . . . . . . . . . . 1 SO
How they work . . . . . . . . . . . . . . . . . . . . . . 154
Frontal collisions and the laws of physics . . 139
Front passenger seat adjustment . . . . . . . . . 64
Front seats Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Child restraints in the front seat . . . . . . . . 147
Fuel Additives.. .. .. .. .. ............... .. 212
Blended gasoline . . . . . . . . . . . . . . . . . . . . 212
Current consumption . . . . . . . . . . . . . . . . . . 24
Economy messages (efficiency program) . . 25
Fuel filler flap emergency release ..... .. 216
289

Index
Fue l filler neck . . . . . . . . . . . . . . . . . . . . . . 214
F ue l gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 12
Gasoline additives . . . . . . . . . . . . . . . . . . . 213
Low fuel level symbo l . . . . . . . . . . . . . . . . . 21
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 212
Recommendation ... .... ...... ... ... . 212
Refuell ing . . . . . . . . . . . . . . . . . . . . . . . . . . 214
R ese rve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Saving fue l . . . . . . . . . . . . . . . . . . . . . . . . . 199
Tank capac ity ... .. . .. ..... ... .. .. 11,278
Fuses Assig nment . . . . . . . . . . . . . . . . . . . . . . . . 267
R ep lac ing . . . . . . . . . . . . . . . . . . . . . . . . . . 266
G
Garage doo r opener (Home Link) . . . . . . . . . . 4 4
Garment hooks . . . . . . . . . . . . . . . . . . . . . . . . 74
Gas discharge lamps. . . . . . . . . . . . . . . . . . . 270
Gauges Eng ine coolant temperature . . . . . . . . . . . . 10
Fue l gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . 26
Ta chometer . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
Trip odometer . . . . . . . . . . . . . . . . . . . . . . . 26
General illustration . . . . . . . . . . . . . . . . . . . . . 8
Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5
Glossa ry of tire a nd loadi ng terminology . . 238
Glove compartment (coo led) . . . . . . . . . . . . . 73
Glow plug system Indicator light . . . . . . . . . . . . . . . . . . . . . . . 20
Gross Vehicle Weight Rat ing (GVWR) . . . . . 277
H
Head-up Display . . . . . . . . . . . . . . . . . . . . . . . 27
Headlights Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Clean ing system . . . . . . . . . . . . . . . . . . . . . . 54
Defective . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
H eadlig ht ra nge control ............ 21, 46
Hi gh beam assist . . . . . . . . . . . . . . . . . . . . . 49
Head restra ints . . . . . . . . . . . . . . . . . . . . . . . 132
Ad justing . . . . . . . . . . . . . . . . . . . . . . . . . . 132
H ea ted
exterior mirrors . . . . . . . . . . . . . . . . . . . . . . 51
rear window . . . . . . . . . . . . . . . . . . . . . . . . . 78
290
seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
winds hield washer spray nozzles . . . . . . . . 54
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Heavy clothing and safety be lts . . . . . . . . . . 140
Hexagonal socke t . . . . . . . . . . . . . . . . . . . . . 256
Hig h beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
High voltage warning label . . . . . . . . . . . . . 277
Hill descen t cont rol . . . . . . . . . . . . . . . . . . . 115
Homelink (garage door opener) . . . . . . . . . . 44
Hood (release lever) . . . . . . . . . . . . . . . . . . . 220
Hor n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
How are child restraint system anchors relat-
ed to ch ild safety . . . . . . . . . . . . . . . . . . . . . 180
How many a irbags does my vehicle have? . . 152
How safety belt pre tensioners work 144
I
Ign ition
Ind icator lights . . . . . . . . . . . . . . . . . . . . . . 17
Swi tc hi ng on/off . . . . . . . . . . . . . . . . . . . . . 81
Imbalance (wheels) . . . . . . . . . . . . . . . . . . . 244
Immobili ze r . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Important things to do before driv ing . . . . 129
Imprope rly worn safety belts . . . . . . . . . . . 144
I nd icator lights .. .. .. .. ... ............ . 11
Dynam ic steering . . . . . . . . . . . . . . . . . . . . 194
also refer to War ning/ indica to r li ghts . . . . 11
Infan t seats . . . . . . . . . . . . . . . . . . . . . . . . . 173
Inflation pressure (ti res) . . . . . . . . . . . . . . . 246
I nstalling the upper tether st rap on the a n­
c h o rage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Instrument cluster
Ind icator lights . . . . . . . . . . . . . . . . . . . . . . 11
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Adjust ing the lighting . . . . . . . . . . . . . . . . . 51
I nstruments and contro ls
Genera l ill ustration . . . . . . . . . . . . . . . . . . . . 8
I nter io r lighting
Amb ien ce lig hting . . . . . . . . . . . . . . . . . . . . SO
Front and rea r . . . . . . . . . . . . . . . . . . . . . . . SO
Intermittent (windshie ld w ipers) . . . . . . . . . 54
]
Jump-start ing . . . . . . . . . . . . . . . . . . . . . . . . 271