2015 AUDI A8 radiator

- the temperature of the engine coolant rises
due to th e heat bui ld-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
.&_ WARNING
- To reduce the r isk of personal injury nev­
er touch the radiator fan.
- The auxiliary electr ic fan is temperature
controlled and can switch on sudden ly
even when the engine is not runn ing.
- The auxiliary radiator fan switches on au­ tomat ically when the engine coolant
reaches a certain temperature and will
continue to run until the coolant temper ­
at ure drops.
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
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F ig . 2 05 Eng ine co mpartmen t: cove r on the b rake f lui d
r eservo ir
Before you check anything in th e engine com­
partment,
alwa ys read and he ed all WARN­
INGS c::> .&. in Working in the engine compart­
ment on page 2 28.
~ Read the brake fluid level from the brake
fl uid reservo ir ~
fig . 205, c::> page 230. The
brake f luid leve l must be betwee n the "M IN"
and "M AX" marki ngs.
The location of the brake fl uid reservo ir can be
see n in t he engi ne comp artment illus trati on
c::> page 230.
Checkin g and fillin g 239
The fluid level may d rop slightly afte r some
time due to the automatic adjustment of the
brake pads . T his is not cause for alarm .
If the brake flu id leve l falls considerably be­
low the "MIN" mark, the brake warning/indi­
cator light . (U.S. models) . (Canadian
models) w ill come on
~ page 14 . Do not con­
tin ue to operate the vehicle . The complete
brake sys tem should be thoroughly checked
by an authorized Audi dea ler or other quali ­
fied facility and the cause corrected.
If the
brake f lu id leve l is too low, the brake warning/
indica tor ligh t will illumi nate. Conta ct an au­
thorized Aud i de aler
immediately .
Changing brake fluid
Have the brake fluid changed by an experi­
en ced technician.
B rake fluid absorbs moisture from the air . If
the water content in the brake fluid is too
high, co rrosion in the brake system may resu lt
after a pe riod of time. The boiling point of the
brake f lu id will also dec rease conside rably and
decrease brak ing performance.
T herefo re , the bra ke fluid must be changed
every tw o year s. Always use new br ake f lu id
which con forms to Federal Mo tor Veh icle
Standard " FMVSS 116 DOT 4".
T he bra ke fluid reservo ir can be d iff icu lt to
reach, the refore, we recommend that you
have the bra ke fluid changed by your author­
ized
Audi dealer. Your dealer has the cor rect
tools, the right brake fluid and the know -how
to do this for you.
A WARNING
---- Brake flu id is poisonous. It must be stor­
ed only in the closed or iginal container
out of the reach of children!
- Brake failure can resu lt from old or inap­
prop riate brake f lu id. Observe these pre­
cautions:
- U se only brake fluid tha t meets SAE
specificat ion
J 1703 and conforms to
Federa l Motor Vehicle Standard 116.

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complexity of today's automobi les, have
steadi ly reduced the scope of maintenance
and repairs which can be carried out by vehicle
owners.
Also, safe ty and e nvir onm en tal con­
cerns p lace very strict limits on the na ture of
repairs and adjustments to engine and trans ­
miss io n pa rts which an owner can perform .
Maintenance, adjustments and repa irs u sua lly
require special tools, testing dev ices and oth­
er equipment avai lab le to specially trained
workshop personnel in order to assure prope r
performance, reliab ility and safety of the vehi­
cle and its many systems .
Improper ma intenance, adjustments and re ­
pa irs can impair the operation and reliability
of your vehicle and even void your vehicle war­ ranty. The refo re , proof of servici ng in accord­
ance w ith the maintenance sched ule may be a
condition for upholding a poss ible war ranty
cla im made within the warranty period.
Above all, operational safety can be adversely
affected, crea ting unnecessary risks for you
and your passengers.
If in doubt about any servicing, have it done
by your authorized Audi dealer or any other
properly equipped and q ualified workshop .
We strong ly urge you to give you r a uthorized
Audi dealer the opportun ity to perform all
schedu led maint enance and necessary repairs .
Your dea ler has the facilities, or iginal parts
and t rained spec ialists to keep your vehicle
running properly .
Performing limit ed m aintenance you rself
The following pages describe a limited num­
ber of procedur es which can be performed on
your vehicle with ordinary too ls, should the
need arise and trained personnel be unavaila­
b le. Before performing any of these proce­
dures, always thoroughly read all of the app li­
cable text and carefully follow the instruc­
tions given . Always rigorously obse rve the
WARNINGS provided .
Before you check anything in th e engine
compartment, a lway s re ad and heed all
Con sumer In formation 29 1
WARNINGS ¢ & and¢ & in Working in the
engine comportment on page 228 .
A WARNING
-Ser ious personal injury may occur as a re­
sult of improperly performed mainte­ nance, adjustments or repa irs.
-Always be extremely careful when work­ ing on the vehicle. Always follow com­
mon ly accepted safety pract ices and gen­
eral common sense . Never r isk personal
lnJU ry .
- Do not attempt any of the ma intenance ,
checks or repairs descr ibed on the fol­
lowing pages if you are not fully fam iliar
with these or othe r procedures with re­
spect to t he veh icle, or are uncerta in how
to p roceed .
- Do not do any work without the proper
too ls and equipment. Have the necessary
work done by your authorized A udi deal ­
er or another proper ly equipped and
qualified workshop .
- The engine compartment o f any motor
veh icle is a potentially hazardous area.
Never reach into the area around or
touch the rad iator fan. It is temperature
contro lled and can switch on suddenly -
even when the engine is
off . The radiator
fan switches on automat ically when the
coo lant reaches a certain temperature
and will cont inue to run until the coo lan t
tempera ture drops.
- Always sw itch
off the ignition before any­
one gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work under­ neath the vehicle . The j ack supplied with
the vehicle is not adequate for this pur­
pose and cou ld collapse causing serio us
personal injury .
- I f you must work unde rneath the vehicle
with the wheels on the ground , a lways
make sure the vehicle is on leve l ground,
that the wheels are a lways securely
blocked and that the engine cannot be
started.
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Settings ... .. ........... .. .. .. .... 34
Unlocking and locking vehicle ... .. .. .. 35
Pow er seat adjustment
Front seats . . . . . . . . . . . . . . . . . . . . . . . . S9
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . 61
Power steering
refer to Electromechanical power assist 201
Power windows ............ .... .. .... 41
malfunction ............. .... .. .. .. 42
Pregnant women
Special considerations when wearing a
safety belt . . . . . . . . . . . . . . . . . . . . . . . 148
pre sense .. .. .. ........... .. .. .. .. . 194
Preventative passenger protection . . . . . 194
Programming the Hom elink universa l re-
mote control ................. ... ... 131
Proper occupant seating positions .. .. . 134
Proper safety belt position ... .. .. .. .. . 147
Proper seating position
Front passenger ................... 135
Occupants .. ................. .. ... 134
Rear passengers .......... .. .. .. ... 136
Protecting 216
Q
quattro
refer to All Wheel Drive ............. 202
Question What happens to unbelted occupants? 144
Why safety belts? ............... .. 143
R
Radiator fan ... ........... .. .. .. ... 238
Radio clock .. .. .............. ... .... 27
Rain/light sensor Headlights .............. .... .. .... 46
I ntermittent (windshield wipers) . . . . . . 53
Sensor defective . . . . . . . . . . . . . . . . . . . . 22
RangeffuelleveO .................... 25
Reading lights . ............... ... .... 50
Rear fog lights ............ .... .. .. .. 46
Rear lid
Escape handle
Rear light 266
Defective .. ............. .... .. .... 22
Index 303
Rear seats
Adjusting individual seats ......... .. . 61
Entry assistance . ... .............. .. 64
Front passenger seat adjustment . . . . . . 64
Reclining rear seat .................. 63
Rear view mirror ... .. .............. .. 56
Rear window heating . ................ 80
Recircu lation mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Reclining rear seat ... .............. .. 63
Recuperat ion .. .. .. .. . .. ... .... .... .. 25
Refuelling ... ... .. .. ............... 223
Remote control Garage door opener (HomeLink) ...... 131
Massage function . . . . . . . . . . . . . . . . . . . 64
Unlock ing and locking .............. . 35
Remote luggage compartment lid release 37
Repair manuals .. ................... 290
Repairs Airbag system ..... .............. . 164
Replacing Fuses ......... .. ................. 276
Light bulbs .. .. .. .... ........... .. 280
Tires and wheels ... .............. . 257
Windshield wiper blades ............ . 54
Reporting Safety Defects ............. 141
Request to warm engine by driving Warning/indicator lights ........ .. .. . 21
Reset button . . . . . . . . . . . . . . . . . . . . . . . . 26
Retractor . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Rims Cl eaning ...... .... ............... 215
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Loading ........................... 73
Roof weight . .. .. .... ........... .. . 73
s
SAFE ................... ........... 26
Safe driving habits ... .............. . 133
Safety belt pos ition . . . . . . . . . . . . . . . . . 14 7
Safety belts worn by pregnant women . 148
Safety belt pretensioner . . . . . . . . . . . . . . 149
Serv ice and disposal ... ... .... ..... 150
Safety belt pretensioners Pre sense . . . . . . . . . . . . . . . . . . . . . . . . 194
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