2013 AUDI RS5 CABRIOLET coolant temperature

10 Instruments and warning/indicator lights
Instruments and warning/indicator Lights
Instruments
Instrument cluster and controls
The instrument cluster is your central source of information.
Fig. 3 Ove rv iew of the instrument cluster
CD Coolant temperature gauge .. .
@ Tachometer ........... .. .. .
@ Warning/indicator lights .. .. .
© ISETlbutton .... .... .. .... . .
® Display
- Driver information system .. .
- Time and date d isplay .. .. .. .
- Odometer .......... ... .. .
@ Reset button for trip odometer
(z) Speedometer
@ Fuel gauge . .... ..... .. .. .. .
(D Tips
10
11
13
11
24
12
12
12
12
- When switching the ignition on, the nee­
dles in the instrument cluster swing up­
ward briefly.
- The illumination for the instrument clus­
ter lights up whenever you switch on the
i gnition with the
vehicle headlights off .
As the daylight fades, the instrument
cluster illumination likewise dims auto­
matically a nd will go out completely
when the outside light is
very low. This
feature is meant to remind you to switch
on the headlights when outside light
conditions become poor .
Engine coolant temperature gauge
The engine coolant gauge q page 10, fig. 3 CD
only works when the ignition is on. To prevent
damage to your engine, please note the fol ­
lowing important points:
Engine cold
If the needle is at or close to the bottom of
the gauge, the engine has not yet reached its
operating temperature. Avoid high engine
speeds, heavy engine loads, and heavy throt ­
tle app lications.
Normal temperature
When the engine has reached its operating
temperature, the needle will
move to the mid­
dle of the gauge and remain there . If the en­
gine is working hard at high outs ide tempera­
tures, the needle may
move higher on the
gauge. This is not a cause for concern as long
as the . warning light in the instrument
cluster display does not illuminate. If the.
warning light in the instrument cluster dis­
play flashes, this can mean one of two things:
either the coolant
temperature is too high, or
the coolant
level is too low q page 18 Ill-

Instrument s and warning /indicator lights 11
,&_ WARNING
- Always observe the warning in
¢ page 200, Engine compartment, be­
fore opening the hood and checking the
engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself . Let the engine
cool off first so that you cannot hear or
see any steam or engine coolant .
(D Note
-Mounting additional lights or accessories
in front of the air inlets reduces the cool­
i ng effect of the radiator . At h igh outside
temperatures or high engine load, the
engine could overheat.
- The front spo iler has been designed to
properly distribute the cooling air when
the veh icle is moving. If the spoiler is
damaged, this could reduce the cooling
effect and the engine could then over­
heat. Ask your authorized Audi dealer for
assistance.
Tachometer (engine rev counter)
The tachometer indicates the engin e RPM
(r evolutions per minutes).
If engine RPM d rops be low 1,500 , you should
downshift to the next lower gear. The red area
at the end of the scale indicates maximum
permissible engine RPM after the break-in pe­
riod . Before reaching this a rea, move these­
lector lever to position D/S or ease your foot
off the accelerator pedal.
(D Note
The tachometer needle@¢ page 10,
fig . 3
shou ld only briefly be in the red
zone: you could damage your engine! The
beg inning of the red zone varies depend­
ing on the engine.
@) For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
~ button
You can perform different functions with this
button.
Fig. 4 SET button in th e in strument cl uste r
The !SET ! button performs the following func­
tions :
Switching on time, date, temperature
display , and odometer
The display appears for approximately 30 sec­
onds when you press the
!S ET I button ¢ fig. 4
with the ignition off.
Starting the Auto-Check sequence
The Auto-Check system constantly monitors
certain individual functions and components
of the vehicle when the ignition is turned on
and when the vehicle is moving .
With the ignition turned on, you can start the "Auto-Check sequence" by pressing the
! S ET !
button . You can perform an Auto-Check se­
quence when the vehicle is stationary and the
ignition is turned on or when the veh icle is
moving slower than 3 mph (5 km/h).
I n addition, the number of keys init ialised for
your vehicle is disp layed .
L2 3/3 means that
three keys have been initialised. This feature
enables used car buyers to ma ke sure they
have received all of the keys.
If you are given only two keys, for instance,
you should take the vehicle and the existing
keys to an Audi dea ler to have the missing key
II>-

18 Instrum ent s and w arn ing /indic ato r light s
...L Engine cooling system
A malfunction in the engine cooling system
must be repaired as soon as possible.
• Turn off engine and chec k coolant le vel
If the indicator light t urns on and the mes ­
sage appears, the coo lant temperature is too
high or the coo lant level is too low.
> Pull
off the road.
> Stop the vehicle .
> Turnoff the engine.
> Check coolant level.
> Add coolant if necessary¢
page 214.
> Continue driving only after the eng ine cool­
ant warn ing/ indicator light goes out.
> Contact your authorized Audi dealer for as-
sistance if necessary.
If the engine coolant level is correct, then the radiator fan may be the cause of the malfunc­
tion .
.8, WARNING
-If your veh icle should b reak down for
mechanical or other reasons, pa rk at a
safe dis tance from moving traffic, turn
off the engine and turn on the hazard
warning lights¢
page 54, Emergency
flashers.
-
- Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed. Wait until you can no longer see or
hear steam or coo lant escaping.
- The engine compartment of any veh icle
is a dangerous area. Before you perform
any work in the engine compartment,
turn of the eng ine and allow it to cool.
Follow the wa rning stickers¢
page 200,
E ngine compartment.
0 Note
Do not continue driving if the. symbol
illuminates. There is a malfunct ion in the
engine cooling system -you could damage
your eng ine.
~ - Steering column lock
• Stee ring d efe ctive! Do not dr ive v ehi cle!
If the indicator light turns on and the mes­
sage appea rs, there is an electronic steering
column lock malfunct ion. You cannot switch
the ignit io n on.
Do
not tow your vehicle because it cannot be
stee red. Seek professional assistance.
11!11 S tee ring l ock: C ontact de ale r!
If the indicator light turns on and the mes­
sage appears, there is an e lectronic steering
column lock malfunct ion .
Drive to your au thorized A udi dealer immedi­
ately to have the ma lfunction corrected.
A WARNING
-
Your veh icle must not be towed in the
event of a malfunction in the electronic
steering co lumn lock because it cannot be
steered due to the locked steering. If it is
towed with the steering locked, there is
the r isk of an accident.
© -Ignition lock
• Ignit ion lo ck def ective. Contact deal er!
If the indicator light turns on and the mes­
sage appears, do
not switch the ign it ion off
because you may not be able to sw itch it on
again .
Drive to your authorized Audi dealer immedi­
ately to have the malfunction corrected .
On vehicles with convenience key*, the engine
should not be switched
off using the
I START ENGINE STOP I button because the en­
gine cannot be started again after the ignition
has been switched
off .
(D Tips
The symbol's appearance might be differ­
ent in some mode ls.

208 Check ing and filling
- To reduce the r isk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood.
- Keep children away from the engine com­
partment.
- Never spill flu ids on hot engine compo­
nents . They can cause a fire.
- Never touch the radiator fan. The auxili­
ary electr ic fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap
when the eng ine is still warm . The cool­
ant system is pressur ized and hot coo l­
ant could spray out.
- Protect your face, hands and arm from
steam o r hot eng ine coolant by placing a
thi ck rag over the cap when you open the
coolant reservoir .
- Do not remove the engine cover under
any c ircumstances. Th is increases the
risk of burns.
- If wo rk on the fuel system or the electri­
c al system is necessa ry:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames . Fluids in the engine com­
pa rtment cou ld start a fire.
- Keep an approved fire extinguisher im­
mediately avai lable.
- To avoid electrical s hock and persona l in ­
jury while the engine is running or being
started, never touch:
- Ignition cables
- Othe r components of the high voltage
e lectronic ignition system.
- If you must perform a check or repa ir
with the engine running:
- First, fully apply the parking bra ke,
move se lector lever o f automat ic trans­
missio n to "P" (Park). -
Always use extreme caution to p revent
clothing, jewel ry, or long hair from get­
ting caught in the radiator fan, V-belts
or other moving parts, or from contact­ ing hot parts. Tie back hair before
starting, and do not wea r clothing that
will hang o r droop into t he engine.
- Mi nimize exposure to em ission and
chemical hazards~ &.
A WARNING
Ca lifo rnia Proposition 65 Wa rning:
- Eng ine exhaust, some of its const ituents,
and certain vehicle components contain
or emit chemicals know n to the State of
California to cause cancer and birt h de­
fects and reproduc tive harm. In addition,
certain fl uids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and b irth defects or other reproductive harm.
- Battery posts, terminals and related ac­ cessories conta in lead and lead com ·
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands afte r handling .
(I) Note
When adding f lu ids, always make sure that
they are poured i nto the proper conta iner
or filler opening, otherwise serious dam­
age to vehicle systems w ill occur.
@) For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly. If
you see spots from oil or other veh icle flu­
i ds, have yo ur vehicle inspected by a n au­
thor ized Audi dea ler.

214 Checking and filling
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling system is sealed and generally re­
quires little attention .
The cooling system has been filled at the fac­ tory with a permanent coolant which does not need to be changed. The coolant consists of a
mixture of water and the manufacturer's gly ­
col-basedcoolant additive G13 antifreeze with
anticorrosion add itives (50% for USA models;
60% for Canadian models). This mixtu re both
assures the necessary frost protection and
protects metal components in the engine 's
cooling system from corrosion and scaling. It
also raises the boiling point of the coolant .
Do not reduce the concentration of the cool­
ant in the summer by adding plain water .
The
proportion of coolant additive must be at
least 50% but not more than 60%
to main­
tain antifreeze protection and cooling efficien­
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the vehi­
cle heating and eng ine cooling system .
For year-round driving, antifreeze is added at
the factory for temperatures down to:
- -31 ° F ( - 3 S °C) USA
- -40 °F ( - 40 °C) Canada .
_&. WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ~
A in Working in the engine
compartment on page 207.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
mate conditions . This is especially impor­
tant if you live in a region where the win­
ter is extremely cold. If necessary, in- crease the
proportion of coolant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend using on ly coolant ad­
ditive G12++ or G13 for your vehicle.
This coolant additive is availab le at au­
thor ized Audi dealers. Other types of
antifreeze can significantly reduce cor­
rosion protection. The resulting corro­
sion cah cause a loss of coolant and se­
rious engine damage.
- Do not add any type of rad iator leak seal­
ant to your vehicle's engine coolant .
Adding radiator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Veh icle
Limited Warranty.
· Checking the engine coolant level and
adding coolant
Be very careful when adding engine coolant.
Fig. 180 E n g in e compart men t: Cover on the coo la nt
expansio n tan k
Fig. 181 En g in e compart men t: markings in the coo la n t
expansion tank
ll>

216 Check ing and filling
-If you drain the coolant, it must be
caught and safely stored in a proper con­
tainer clearly marked "poison".
(D Note
-Do not add any type of radiator leak seal­
ant to your vehicle's engine coo lant.
Adding rad iator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty .
- Coolant pollutes the environment and
could cause an engine fire . Excess cool­
ant wil l be forced out through the pres­
s u re re lief valve in 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
c::> page 214 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.
The radiator fan is dr iven by the engine via the
V-be lt . T he viscous clutch regulates the speed
of the fan accord ing to the temperature o f the
coolant .
A n auxiliary e lectr ic radiator fan* switches on
and off depending on coolant temperature
and other vehi cle operating conditions.
After you switch the engine off, the auxiliary
fan can cont inue runn ing for up to 10 minutes
- even with the ignition off.
It can even sw itch
on again later by itself
c::> .&. , if
- the temperature of the engine coolant rises
due to the heat bu ild-up from the eng ine in
the engine compartment, or -
the engine compa rtment 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
contro lled and can switch on suddenly
even when the engine is not running.
- The auxiliary radiator fan sw itches on au­
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coolant temper ­
ature drops .
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
Fig . 182 Engin e compart men t: Cove r on the b rake flu­
id reservoi r
Before you check anyth ing in the engine com­
partment,
a lwa ys re ad and hee d all WARN­
ING S c::> .&. in Working in the engine compart­
ment on page
207.
~ Read the brake fluid level from the brake
fluid reservoir
c::> fig. 182, c::> page 209,
fig . 177. 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 s ide
c::> page 209.
The fluid level may drop
slightly after some
t ime due to the automatic adjustment of the
brake pads. This is not cause for a larm . .,._

-Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age .
(D Note
Please note that summe r and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight means the comb ined weight (in excess of
those sta ndard items which may be rep laced)
of au toma tic transmission, power steer ing ,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip­
ment (whether installed or not) .
Aspect ratio
means the rat io o f the height to the w idth of
the tire in percent . Numbers of 55 or lower in ­
dicate a low sidewall for improved steering re­
sponse and better overa ll handling on dry
pavement .
Bead
means the part of the t ire t hat is made o f
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the r im.
Bead separation
means a b reakdown of the bond between
components in the bead .
Cord means the strands forming the plies in the
tire.
Tire s an d wheel s 223
typica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
dec rease the e lasticity of summer t ires,
which affects tract ion and brak ing ability.
If summer t ires are used i n very co ld tem ­
peratures, cracks ca n form o n the tread
bars , res ulting in perma nen t tire damage
that can cause loud driving noise and un­
bala nced ti re s. Audi i s not respon sible for
th is type of damage .
Cold tire inflation pressure
means the t ire p ress ure recommended by t he
vehicle manufacture r fo r a tire o f a des ignated
s ize t hat has not bee n driven for more than a
coup le o f miles (k ilometers) at low speeds in
the three hour period before the tire press ure
is m easured or adjusted.
Curb weight
me ans the we ight of a motor ve hicle with
st andard equipmen t incl ud ing the max imum
capacity of fuel, oi l, and coolant, air condi ­
tioning and additional weig ht of optiona l
equipment.
Extra load tire
means a t ire design to oper ate a t higher load s
and at higher inflation pressures than the cor­
responding standa rd tire . Extra load tires may
be identified as "XL", "x l", "EXTRA LOAD", o r
"RF" on the sidewal l.
Gross Axle Weight Rating ("GAWR")
me ans the load-ca rry ing capac ity of a single
axle system , measured at the tire -ground in­
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
mea ns the maximum total loaded we ight of
the ve hicl e. .,..
•
•

A
Accessories 266
Active rollover p rotection system ... .. . 127
Retract ing ro llover p rotection . .. .. .. . 128
AC (automatic climate control) . .. .. .. .. 70
Adapt ive cr uise con trol ...... .. .. .. .. .. 9 2
C leaning sensors/camera . ... .. .. .. . 193
M essages . . . . . . . . . . . . . . . . . . . . . . . . . 99
Request for driver intervention . . . . . . . . 97
Sett ing the driving program .. .. .. .. .. 97
Ad apt ive light ............. .... .. .... 52
Adapt ive Lig ht (defect ive) .... ... . ... .. 22
Adding Eng ine coolant ........... .. .. .. ... 214
Eng ine oil .. ............. .... .. ... 212
W indshield washer fluid ... .. .. .. .. . 221
Additiona l accessories
Add it ives 26
6
E ng ine oi l .. ............. .... .. .. . 212
Ad justab le steer ing column .. .. .. .. .. .. 74
Ad justing
Ai r distribution (automatic climate con-
trol) ... .. .. .. .... .. .... ... .. .. .... 7 1
Instrument illum inat ion ... .. .. .. .. .. 55
Steer ing colum n .......... .. .. .. .. .. 74
Temperature (automat ic climate co ntrol) 71
A irbag
War ning/indicator lights ... .. .. .. .. .. 20
A irbag system . . . . . . . . . . . . . . . . . 137, 1 56
A dva nced A irbag Sys tem ... .. .. .. .. . 141
A dvanced Airba g Sys tem components . 14 4
Care ... .. .. .. .. .. .. .... ... .. .. ... 150
C hildren ... .. .... .... ... .. .. .. ... 159
Ch ild restra ints ........... .... .. .. . 160
Components (front airbags) .. .. .. .. . 144
Da nger of fitti ng a child safety seat on
the front passenger seat . ...... ... .. 138
D isposal ... ... .. .. ...... .. .. .. .. . 150
F ront airbags . . . . . . . . . . . . . . . . 14 1, 1 42
H ow do the fron t airbags wo rk? . .. .. . 14 6
H ow many airbags does my ve hicl e
have? ... .. .. ... .. ..... ... .. .. ... 14 4
H ow t he Advanced Airbag System com­
ponents work together . . . . . . . . . . . . . 145
Important safety instructions on the knee airbag system . . . . . . . . . . . . . . . . 154
Important th ings to know ...... ... .. 137
Inde x 269
Indicator lig ht ... .. . .. .. ..... ... .. 14 8
Knee a irbags ... .... . ... ...... ... .. 152
Monito ring . . . . . . . . . . . . . . . . . . . . . . . 148
PASSE NGER AIR BAG OFF light ..... .. 148
Repairs ... .. .. .. .... ............. 150
Safety instructions .. .............. . 150
S ide a irbags ... .. .. . .. .... .... .. .. 155
Weight-sensing mat ............... 159
When must t he sys tem be inspected? . 1 48
all-wheel drive .. .. ................. 181
A lloy whee ls .. .... .. . .. .. ..... ... .. 195
All wheel d rive
Winter tires . .. .. .... ........... .. 23 7
A lternator
refer to Generator . . . . . . . . . . . . . . . . . . 17
Anti -free ze
refer to Eng ine coolant system ... .. .. 214
A nti- lock b rak ing system ............. 176
Warning/ind ica tor lights ........ .. .. . 19
Anti-slip reg ulation .. .. .. ...... .... . 176
Anti-theft a la rm warning system ... .. .. . 31
Anti-theft systems El ec tronic immob ilizer .......... .... . 37
Arm rest ...... .. .. ................. . 64
Asht ray . ... .. .. .... . ... ...... ... .. . 65
Aste risk
What does it mean w hen so mething is
m ark ed w it h an aster is k? . . . . . . . . . . . . . . 6
Audi braking guard
refer to brak ing guard ............. .. 92
Audi drive select ..... . .. .. ..... ... .. 104
Description .... .. ................. 104
Dynam ic steering ..... ............. 104
Setting the driv ing mode . ....... .. .. 105
S po rt d iffe rential ................. . 104
Audi Se rvice Repair Manuals and Litera-
ture ....... .. .. .. ................. 264
A UTO
A utomat ic climate control .... ... .. .. . 71
Automatic hea dlights ... .... ... .. .. . 52
Auto Lock . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Automat ic be lt retractor ............. 133
A utoma tic car wash
refer to Washing . . . . . . . . . . . . . . . . . . 190
•
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