2014 AUDI RS7 SPORTBACK radiator

222 Checking and filling
pressure relief valve in the cap when the en ­
gine becomes hot.
.&_ WARNING
- The cooling system is under pressure and
can get
very hot. Reduce the risk of
sca lding from hot coolant by following
these steps .
- Turn off the eng ine and a llow it to cool
down.
- Protect your face, hands and arms from
escap ing flu id and steam by cover ing
the cap with a large , thick rag .
- Tu rn the cap slowly and
very carefully
in a counter -clockwise direction while
applying light, downward pressure on
the top of the cap .
- To avo id being burned, do not sp ill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts. Under certain
conditions, the ethylene glycol in en­
g ine coolant can catch fire.
- Antifreeze is poisonous. Always store an­
t ifreeze in its original container and well
out of the reach of children.
- If you drain the coolant, it must be
caught and safely stored in a proper con­
ta iner clearly marked "poison".
(D Note
- Coolant po llutes the environment and
could cause an engine fire. Excess coo l­
ant will be forced out through the pres­
sure relief valve i n the cap when the en­
gine becomes hot .
- If, in an emergency, only water can be
added, the correct ratio between wate r
and antifreeze ~
page 220 must be re­
stored as soon as possib le.
@) For the sake of the environment
Dra ined coolant should not be reused . Al­
ways dispose of used coolant while
observ­
ing all environmental regulations .
Radiator fan
The radiator fan switches on automatically by
itself .
An auxilia ry electric r adiator fan switches on
and off depending on coolan t tempera ture
and other vehicle operat ing condit ions .
After you switch the engine off, the aux iliary
fan can continue running for up to 10 minutes
- even w ith the ignition off . It can even swi tch
on aga in later by itself
c> .&. , if
- the temperature of the engine coo lant rises
due to the heat build-up from the engine in
the engine compartmen t, or
- the engine compartment heats up because
the vehicle is parked in intense sunlight.
.&_ WARNING ,_
- To reduce the risk of personal injury nev­
er touch the radiator fan .
- The auxiliary electric fan is temperature
controlled and can sw itch on suddenly
even when the engine is not running .
- The auxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reac hes a certain t emperature and wi ll
continue to run until the coolant temper­
a ture drops.
Brake fluid
Checking brake fluid level
Fi g. 19 2 Engin e compart ment: cover on t he bra ke fluid
re servoir
Ill>

274 Con sum er Inf ormation
steadi ly reduced the scope of maintenance
and repairs which can be carried out by vehicle
owners.
Als o, sa fe ty a nd en vir onm ent al con­
cerns place very strict limits on the nature of
repairs and adjustments to engine and trans­
miss ion parts which an owner can perform .
Maintenance, adjustments and repa irs usua lly
require special tools, testing devices and oth­
er equipment available to specially trained
workshop personnel in order to assure proper pe rformance, reliab ility and safety of the vehi­
cle and its many systems.
Improper maintenance, adjustments and re­
pa irs can impair the operation and reliab ility
of your vehicle and even void your vehicle war­
ranty. Therefore, proof of servic ing in accord­
ance w ith the ma intenance schedule may be a
condition for upholding a poss ible warranty
claim made within the warranty period.
Above all, operational safety can be adversely
affected, c reating unnecessary risks for you
and your passengers.
If in doubt about any se rv icing, have it done
by your author ized Audi dealer or any other
p roperly equipped and qualified workshop.
We strong ly urge you to give yo ur autho rized
Audi dealer the opportunity to perfo rm all
schedu led maintenance and necessary repairs.
Your dea ler has the facilities, original parts
and trained specialists to keep your vehicle
running properly.
Performing limit ed m aint enance yours elf
The following pages describe a limited num­
ber of proced ures which can be performed on
your vehicle with ordinary too ls, shou ld the
need arise and trained personnel be unavaila­
ble. 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 p rovided.
Before you ch eck anything in th e eng ine
co mpartm ent , alway s re ad and h eed all
WA RNINGS
c::> .&. and c::> .&. in Working in the
engine compartment on page 213.
_& WARNING
- Serious 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
monly accepted safety pract ices and gen­
eral common sense. Never r is k personal
injury.
- Do not attempt any of the maintenance,
checks or repairs descr ibed on the fol­
lowing pages if you are not fu lly fam iliar
with these or other procedures with re ­
spect to the vehicle, or are uncertain how
to proceed .
- Do not do any work without the proper
too ls and equipment. Have the necessa ry
work done by your authorized A udi deal­
er or another proper ly equipped and
qualified workshop.
- The engine compartment of any motor
veh icle is a potentially hazardous area.
Never reach into the area around or
touch the radiator fan. It is temperature controlled and can sw itch on suddenly -
even when the engine is off. The radiator
fan switches on automatical ly when the
coo lant re aches a certain temperature
and will continue to run until the coo lant
temperature 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 jack s upplied with
the vehicle is not adequate for this pur­
pose and cou ld co llapse causing serious
personal injury.
- If you must work underneath the vehicle
with the wheels on the ground, a lways
make sure the vehicle is on level ground,
that the wheels are a lways securely
b locked and that the engine cannot be
started .
- Always make sure the transmission se­
lector lever (automatic transmission) is

280 Index
Defrosting (windows)
automatic climate control . ... ... ... .. 71
Determining correct load limit ... .... . 236
Dimensions ................. .. .... . 271
Dimming the rearview mirror . ..... .. .. 51
Displays Cleaning . .. .......... ...... ... .. . 205
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Door/rear lid warning . . . . . . . . . . . . . . . . . 23
Doors Power child safety lock ........ .. .... 40
Driver information system Boost ... .. ............. .. .. .. ... . 28
CD/radio display . . . . . . . . . . . . . . . . . . . . 23
Door/rear lid warning . . . . . . . . . . . . . . . 23
Efficiency program . ........... .. .. .. 25
En gin e oi l tempe rature display .. .. .. . . 28
E xterior tempe rature display . .. .. .. . . 23
On -board computer . . . . . . . . . . . . . . . . . 24
Shifting indicator . . . . . . . . . . . . . . . . . . . 28
Driver seating position . . . . . . . . . . . . . . . 124
drive select ................. .. .... .. 96
adaptive air suspension/sport ... ...... 96
Adaptive dampers . . . . . . . . . . . . . . . . . . 96
Curve light . . . . . . . . . . . . . . . . . . . . . . . . 96
Engine sound .. .... ...... .. .. .. .. .. 96
Safety belt tensioner . . . . . . . . . . . . . . . . 96
Sport different ial . . . . . . . . . . . . . . . . . . . 96
Driving safely . . . . . . . . . . . . . . . . . . . . . . 123
Driving through water .......... .. ... 199
Driving time ............... ... .. .. .. 24
Duplicate key ............... .. .... .. 32
Dust filter
r e fer to Pollutant filter . . . . . . . . . . . . . . 69
Dynamic steering .......... .. .. .. .. . 194
E
Easy entry feature . . . . . . . . . . . . . . . . . . . . 7 4
Efficiency program . . . . . . . . . . . . . . . . . . . 25
Fu el economy messages . . . . . . . . . . . . . 25
Other equipment . . . . . . . . . . . . . . . . . . . 25
E lectrical accessories (sockets) . . . . . . . . . 60
Electro-mechanical power assist .. .. .. . 194
Electromechanical parking brake
Emergency braking . . . . . . . . . . . . . . . . . 78
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 77 Parking ...
.... .. ............. ..... 78
Releasing and closing ............... 77
Starting assist . . . . . . . . . . . . . . . . . . . . . 78
Starting from rest . . . . . . . . . . . . . . . . . . 78
Warning/indicator lights ........ .... . 15
Electronic differential lock
Warning/indicator lights ............ . 18
Electronic differential lock (ED L) . . . . . . . 189
Warning/indicator lights ............ . 19
Elec tronic immobilizer . . . . . . . . . . . . 26, 33
E lectronic power control (EPC)
warning/indicator light .............. 20
Electronic Stabilization Control (ESC) . .. 189
Warning/indicator lights .......... .. . 18
Emergency actuation Doors ...... .. .. .. ...... ..... .. .. . 38
Power sunroof . .. ................ .. 43
Rear lid ....... .. ............. .... . 40
Emergency braking .............. .... . 78
Emergency flasher . . . . . . . . . . . . . . . . . . . 45
Warning/indicator lights ............. 22
Emergency release
Selector lever .... ............. .... 109
Emergency starting ............. ....
264
Emergency towing ................. . 266
Emergency warning triangle .......... 250
Energy management ............ .... 195
Engine Compartment .... ............. .... 215
Coolant ....... .. .. ............ ... 220
starting ....... .. .. .............. .. 74
Starting with jumper cables ....... .. 264
Stopping .. .... .. ............. .... . 75
Engine compartment ................ 215 Closing the hood .............. .... 214
Opening the hood ................ . 213
Safety instructions ............. .... 213
Working in the engine compartment .. 213
Engine coolant .... ................ . 220
Adding coolant ... ................ . 221
Checking the engine coo lant level ..... 220
Expansion tank ... ............. .. .. 220
Malfunction symbol . . . . . . . . . . . . . . . . . 15
Radiator fan ...... .............. .. 222
Temperature gauge ......... ...... .. 10