2015 AUDI RS5 CABRIOLET ABS

204 Checking and filling
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance .
N N ~ N
" (X) (0
Fig. 179 Engine compartme nt: Cover on the brake flu ·
id reservo ir
Before you check anything in the engine com­
partment,
a lwa ys re ad and heed all WARN·
ING S ¢.&._ in Working in the engine compart­
ment on page 195 .
.. Read the brake fluid level from the brake
fluid reservoir
¢ fig . 179 , ¢page 197,
fig . 174.
The brake fluid level must be be ­
tween the "MIN" and
"MAX" markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left side
¢ page 197.
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads. This is not cause for alarm.
If the brake fluid level falls
considerably be­
low the "MIN" mark, the brake warning/indi­
cator light (U.S. models:
11111 , Canadian
models :. ) will come on
¢page 15. Do not
continue to operate the vehicle. The complete brake system should be thoroughly checked
by an authorized Audi dealer or qualified
workshop and the cause corrected .
If the
brake fluid level is too low, the brake warn ing/
indicator light w ill illuminate. Contact an au­
thorized Audi dealer
immedi atel y.
@ Tips
The brake fluid reservoir is located under­
neath the cover.
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician .
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also decrease conside rably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
every two year s. Always use new brake flu id
which conforms to Federal Motor Veh icle
Standard "F MVSS 116 DOT 4".
The brake fluid reservoir can be diff icult to
reach, therefore, we recommend that you
have the brake fluid changed by your author­
ized
Audi d ealer . Your dealer has the correct
tools, the right brake fl uid and the know -how
to do this for you .
A WARNING
- Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake flu id. Observe these pre­
cautions:
- Use only brake f luid that meets SA E
specifica tion
J 1 7 03 and conforms to
Federa l Moto r Ve hicle Standard 1 16.
Always check with yo ur authorized Aud i
dealer to make sure yo u are using the
correct brake fluid. The correct type of brake f lu id is also indicated on the
brake fluid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong. This can seriously affect the effi­
c iency of the brakes as well as your
safety. This cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .

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@ For the sake of the environment
Because of the pr oblem of proper d isposa l
of brake flu id as we ll as the special tools
requ ired and the necessary expert ise, we
recommend that you have the brake fluid
changed by your author ized Audi dealer .
Battery
General information
Under normal operating conditions, the bat­
tery in your Audi does not need any mainte ­
nance. With
high outside temperatures or
long daily dr ives we recommend that you have
the electro lyte level checked by an authorized
Aud i dealer or qualified workshop . The elec­
trolyte leve l should also be checked each time
the battery is charged c>
page 207.
Have the battery checked when you take your
ve hicle in for service . You are well adv ised to
replace a battery that is older than 5 yea rs .
W ith certa in types of a irbag deployment, t he
battery is d isconnected from the vehicle elec­
tr ica l system for safety reasons c>
.&. in Re­
pair, care and disposal of the airbags on
page 144.
Disconnecting the battery terminals
Some vehicle functions (power w indow regu­
lators, for example) are lost if the battery ter­
m inals a re d isconnected. These func tions have
to be re lea rned after the batte ry term inals a re
connected agai n. T o prevent this, the bat tery
should only be d isconnec ted from the vehicle
e lec tric al system when absolu tely necessa ry
for repairs .
Vehicles not driven for long periods
If you do not drive you r vehicle over a period
of severa l days or weeks, elec trical compo­
nen ts are gr adually cut b ack o r swi tched off .
This redu ces energy cons umption and main­
tains starting capab ility over a longer per io d
c> page 177.
Some o f the conven ience f unctions m ay not
ope rate, su ch as the in ter ior lig hts or t he
Checkin g and fillin g 205
power seat adjus tment. The convenience
funct io ns w ill be available again when yo u
turn o n the ign ition and start the engine.
Winter operation
D ur ing the w inte r mon ths, bat tery capa city
tends to dec rease as tempera tures drop . This
is beca use more power is a lso consumed wh ile
starting, and the headlights, rear window de­
fogger, etc., are used more often.
Avoid unnecessary powe r consumpt ion, pa r­
ticular ly in city traffic or when traveling only
sho rt distances. Let yo ur authorized A udi
dealer check the capacity of the vehicle bat ­
tery before w inter sets inc>
page 207. A well
charged battery will not on ly prevent starti ng
problems w hen the weather is cold, but w ill
also last longer.
@ Tips
If your vehicle is left standing for seve ral
weeks at extremely low temperatures, the
vehicle battery s hou ld be removed and
stored where it will not freeze . This will
p revent it from be ing damaged and having
to be repla ced.
Working on the battery
Be especially careful when working on or near
the bat tery.
The battery is located in the luggage compar t­
ment under the floor . B efo re you che ck any­
thi ng in the luggage compartment,
read and
heed all WARNINGS
c> ,&. .
Always heed the safety warnings , when work­
i ng on the veh icle batte ry or t he vehicle e lec­
t rical sys tem to p reven t inju ry.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM· BO LS and safety precautions when working
on the battery .
®
Always wear eye protection.
•
•

24 0 T ire s and wheel s
According ly, when the low tire pressure te ll­
tale illuminates, you shou ld stop and check
your tires as soon as possible, and inf late
them to the proper pressure. Driving on a s ig­
n ificantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-in­
flation also reduces fuel efficiency and tire
tread life, and may affect the vehicle's han­
dli ng and stopp ing ability.
Please note that the TPMS is not a subst itute
for proper tire maintenance, and it is the driv­
e r's responsib ility to ma inta in correct tire
p ressu re, even if under- inflation has not
reached the leve l to trigger ill umination of the
TPMS low tire pressure telltale.
Your veh icle has also been equ ipped with a
TPMS malfunction indicato r to indica te when
the system is not opera ting properly. The
TPMS mal function indicator is combined wi th
the low tire press ure telltale . When the sys­
tem detects a malfunction, the te lltale will
f lash fo r approximately one minute and then
remain cont inuous ly illuminated. This se­
quence will continue upon subsequen t vehicle
start -ups as long as the ma lfunction ex ists .
When the malfunct ion indicator is ill uminat­
ed, the system may not be able to detect or
signal low t ire pressure as intended . TPMS
malfunctions may occur for a variety of rea ­
sons , includ ing the installat ion of replace­
ment or a lternate tires or whee ls on the veh i­
cle that prevent the TPMS from funct ioning
p roperly. Always check the TPM S malf unct ion
tellta le after replacing one o r more t ires or
wheels on your veh icle to ensure that the re­
p lacement or a lternate tires and wheels allow
the TPMS to continue to function p roperly. Tire pressure indicator appears
Applies to vehicles: wit h tire press ure mo nitor ing system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction .
Fig . 1 87 Displa y: un derin flation w arnin g
U sing the ABS sensors, the tire pressure moni­
toring system compares the tire tread circum ­
ference and vib ration characteristics of the in­
dividua l tires.
If the pressure decreases in one
or more t ires, this is indicated in the instru­
ment cluster with a
RI] war ning symbol and a
message ¢
fig. 187 . The driver message in the
display goes out afte r 5 seconds . The driver
message can b e displayed again by pressing
t h e
ISE TI button. If o nly one t ire is affec ted,
the d isp lay w ill indicate its posi tion.
The tire pressure monitoring system must be reset via rad io or M MI* each time the pres­
su res a re adjusted (e.g. when swit ching be­
tween partial and f ull load p ress ure) or after
changing or rep lacing a tire on your ve hicle
¢
page 241 . The TPMS indicator only mon i­
tors the ti re pressure that yo u have previous ly
stored. You can find the recommended tire
pressures for your vehicle on the label on driv­
er 's side 8-pillar ¢
page 217.
Tire tread circumference and vibration charac­
teristics can change and cause a ti re pressure
warning if:
- the tire press ure in one or more tires is too
low,
- the t ire has struc tural damage,
- t he t ire p ress ure was c hanged, wheels rota t-
ed or rep laced but the TPMS was not reset
¢ page 241. ..,_

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No. Consumer
A/C system pressure sensor,
electromechanical parking
brake, Homelink, automatic
3 dimming interior rear view
m
irror, air quality/outside
air sensor, Electronic Stab ili-
zation Control (button)
5 Sound
actuator
6 Headlight
range cont rol/
head light (cornering light)
7 Headlight (corner
ing light)
Contro l modu les (e lectro-
8 mechanical parking brake,
shock absorber, quattro
sport), DCDC converter
9 Adaptive cru ise contro l
10 Shift gate/clutch
sensor
1 1 Side ass ist
1 2 Headlight range
control,
park ing system
13 Airbag
14 Rear wiper (allroad)
1 5 Auxi
liary fuse (instrument
pane l)
16 Aux
iliary fuse terminal 15
(engine area)
Fuse p anel @ (brown )
No. Con sumer
2 Brake light sensor
3 Fuel
pump
4 Clutc h sensor
5 Left
seat heating with/w ith-
out seat vent ilation
6 Electronic Stab
il iz at ion Con-
tro l (e lectric)
7 Horn
Front left door (window reg-
8 ulator, centra
l locking, mir-
ror, switch, lighting)
9 Winds hield wipe r motor
1 0 Electronic
Stabilizat ion Con-
trol (valves)
Fuses and bulb s 251
Amp s No. Consumer Amps
•
Two-door models: rear left
• window regulator; Four-
11 door models:
rear left door
30
5 (window regulator, central
lock
ing, switch, lighting)
12 Rain and light sensor
5
5
Fuse pan el© (r e d )
5/7,5 No . Consumer Amps
3 Lumbar support 10
7,5 4 Dynamic steering 35
s Interior lighting (Cabriolet)
5
5 6 W
indshield washer system,
35
h eadlight washe r system
5 7 Vehicle electrical
system
20
control module 1
5
5
8
Vehicle e lectr ica l system
30
control module 1
5 9 Left rear window regulator
7,5/20
motor (Cabriolet)/sunroof
5
15 10 Vehicle e
lectrical system
30
control module 1
10 11 R
ight rea r window regulato r
7,5/20
(Cabriolet)/sun shade motor
40 12 Anti-theft
alarm warning
5
system
Amps
5
25 5
15/30
5
15
30
30
25

280 Index
Vehicle care/cleaning 184
Vehicle contro l modules ......... .... . 170
Vehicle electrical system .............. 16
Vehicle identification label ... .. ... ... . 261
Vehicle Identification Number (VIN) .... 261
Vehicle jack .. ... ............. ..... . 247
Vehicle key . . . . . . . . . . . . . . . . . . . . . . . . . 31
Vehicle literature . . . . . . . . . . . . . . . . . . . . . 5
Vehicle shut-down .......... ... .... . 181
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . 242
Ventilation ......................... 69
Viny l
C leaning ... ................ ..... . 187
w
Warn ing/ indicator lights . . . . . . . . . . 10, 13
Airbag system .............. ..... .. 19
Anti-lock braking system (ABS) . . . . . . . . 19
Brake system .............. .. .... .. 15
Electromechan ica l parking brake .. .. . . 16
Electronic power control . . . . . . . . . . . . . 20
Electronic Stabilization Control (ESC) ... 18
Generator .................... ..... 16
Malfunction Indicator Lamp (MIL) . . . . . 20
Safety belt . ................ ... .... 16
Safety systems ..................... 19
Turn signa ls ............. .... ...... 22
Warranty coverages ......... .... .... 264
Washer reservoir .................. . 208
Wear ind icator ............ .... ..... 227
Weights . ................. .... ..... 261
What happens if you wear your safety belt
too loose? ... ................ ..... . 128
What happens to unbelted occupants? .. 124
What impairs driving safety? .......... 113
What should I do after chang ing a
wheel? . ................... ... .... . 223
What should I do after replacing wheels? 223
Wheel bolts Torque . .... .. . .......... .. .. .... . 238
Wheels ..... ................ ..... . 210
Checking tire pressure .............. 221
Cleaning ... ................ ..... . 186
Cold tire inflation pressure . .... .... . 217
General notes .............. .. .. .. . 210 G
lossary of tire and loading terminolo-
gy ........... .. .. .............. . 212
New t ires and wheels .............. . 230
Tires and vehicle load limits ..... .... 224
When must a safety be lt be replaced? .. 126
When must the a irbag system be inspect-
ed? ........... ... .. .............. . 141
When should I adjust the tire pressures? 223
When should I check the tire pressures? . 223
Where can I find the tire pressures for my
car? . .. ... ... .. .. .. ...... ....... .. 221
Why safety belts? . . . . . . . . . . . . . . 123, 124
Wind deflector ...................... 46
Cleaning ......................... 186
Windows Cleaning/removing ice .............. 186
defrosting . .... .. ... .......... ..... 71
Windshield Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 56
defrosting . . . . . . . . . . . . . . . . . . . . . . . . . 71
Windshield washer fluid Low leve l .. ....................... . 21
Windsh ie ld washer system ..... .. .. .. . 56
Windshield wipers Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7
Folding up ...... ................ .. 57
Indicator light . .. ............. .... . 21
Replacing windshield wiper blades ..... 57
Switching on/off ................ .. .
Washer reservoir
Winter operation 56
208
Battery ..... .. .. .. ... ........ .... 205
Car washes .. .. .. ............. .... 184
Coolant system ................... 201
Defrosting windows ................. 71
Removing ice from windows ......... 186
Seat heating . . . . . . . . . . . . . . . . . . . . . . . 71
Tires . .... .... ............... .... 176
Winter tires ... .. .. ............. .... 236
All wheel drive ... ............. .... 236
X
Xenon headlights .. .......... 51, 53,253