2012 AUDI A5 COUPE cooling

(D Note
-If you suspect that the climate control
system has been damaged, switch the
system off to avoid further damages,
and have it inspected by a qualified deal­
ership .
- Repairs to the Audi air conditioner re­
quire special technical knowledge and
special tools . Contact an authorized Audi
dealer for assistance .
(D Tips
-To avoid adversely affecting heating and
cooling performance and to prevent con -
Controls
Applies to vehicles: with Deluxe automatic climate control plus
Warm and cold 85
densation on the windows, the air intake
in front of the windshield must be free of
ice, snow and leaves.
- The air flowing out of the vents and
throughout the vehicle's entire interior is
discharged at the rear of the vehicle.
Make sure that the outlet slots are not
covered by clothing, etc.
- Climate control works most effectively if the windows and the panoramic sliding/
tilting sunroof* are closed . However, if
the interior of a parked vehicle is ex­
tremely hot from the sun, briefly open­
ing the windows can speed up the cool ­
ing process.
This overview will help you to familiarize yourself with the climate controls .
Fig. 98 Clim ate contro ls
The display shows the selected temperature
for the driver's side on the left and the select­
ed temperature for the front passenger 's side
on the right.
Functions are set by rotating the control or
are switched on and off by tapping the but­
tons. The LED in the buttons illuminates when
the function is active. OFF
AUTO
Temperature reg u latorsa>
~ b)
Meaning
Turns on and off
9page86
Automatic operation
¢page86
Temperature selection
9page 86
Fan
¢page87
Recirculation mode
¢page 87

86 Warm and cold
Button(s )
o•
~
1Qul
AC
Meaning
Air distribution
c::> page87
Defrost
¢page BB
Rear window defogger
c::>page88
Turns cooling system on
and off
<=:>page BB
Seat hea ting
c::> page 91
aJ The re gulat or is al so use d to s et t he fa n s pee d, air d is ­
t ribut io n an d seat heating.
b) Th e sym bol m ay app ear sligh tly diff erent in some
mode ls.
(Di Tips
- The gr ille on the controls c::> fig . 98 must
r ema in unobstructed and must not be
ta ped ove r. M eas uring sensors are lo cat­
ed behind it.
Turning the climate control on and off
Applies to vehicles: w it h Deluxe au tomat ic clima te co n­
tro l p lus
"' Briefly press I O FF I, or p ress IAU TO I to turn
the climate cont ro l
on .
"' Press the !O FF ! button for at least 2 sec­
onds
to turn the climate contro l off and to
block th e air s upply from t he outside . " O FF"
appears in the display .
Climate control turns on again when you press
the
tempe rature regulator
Automatic mode~
Applies to vehicles: w it h Deluxe automatic climate co n·
trol plus
The standard operating mode for all times of
the year .
Turning on automatic mode
"' Se t the tempe rature between 60 ° F
( +1 6 °() and 84 °F ( +28 °() .
"' Press the
!AU TO I button . A
utomat ic mode ens ures constant tempera ­
tures in the inter ior and dehumidifies the air
i nside the vehicle . Air temperature, vol ume
a nd distribution are controlled automatically
to reach or main tain the desired interior tem­
perature as quickly as possib le . Fluctuat ions
in exter io r temperature and the effects o f
temperature from the position of the s un are
c ompensa ted for au tomatically.
This operating mode works only in an adjusta ­
ble temperature range of 60°F (+16°() to
84°F ( +28°() . If a tempe ratu re below 60 °F
( + 16°() is sele cted,
LO appears in the d isp lay.
At tempe ratu res above 84°F ( +28°(),
HI is
displayed . At both extreme se tt ings, climate
control runs continuously at maximum cool­
ing or heating power . The re is no temperature
regulation .
Setting the temperature
Applies to vehicles: with Deluxe auto mat ic climate con­
tr ol pl us
The temperature can be set separately for the
driver's side and fron t passenger' s side.
Fig. 99 Temp erat ur e sett ing regulato r
"' Rotate the regulator c::> fig . 99 to the left to
red uce the temperature, or to the right to
increase the temperature .
T he selected temperature appears o n the cl i­
mate control display. When the MMI display is
turned on, the temperature set ting appears
for a few seconds on the screen.

88 Warm and cold
Defrost~
Applies to vehicles: with Deluxe automatic climate con­
trol plus
The windshield and side windows ore defrost­
ed or cleared of condensation as quickly as
possible.
.. Press the~ button to turn on the defrost­
er .
.. Press the~ button again, or press the
IAUTO I button to turn it off.
Temperature is controlled automatically . The
maximum amount of air flows main ly from
the vents below the windshield.
Pressing the~ button switches off recircu la­
tion mode.
Rear window defogger~
Applies to vehicles: with Deluxe automatic climate con­
trol plus
The rear window defogger clears the rear win­
dow of condensation .
.. Press the~ button to turn the rear window
defogger on and off .
The rear w indow defogger works only when
the eng ine is running . The indicator light in
the button illum inates when the rear window
defogger is on.
The rear w indow defogger is switched off au­
tomatically after
1 0 to 20 minutes, depend­
ing on the outside temperature .
The rear w indow defogger can be turned on
permanently by press ing the~ button for
more than two seconds. This remains stored
unti l the ignition is switched off . A rear win- dow defogger that was switched on also re­
mains stored for 15 minutes after the ignition
is sw
itched off .
If the engine is res tarted w it hi n these 15 mi ­
nutes, the rear window defogger is activated
for
1 0 to 20 minutes, depending on outside
temperature . When a vehicle is parked for a
short time, the rear window defogger does
not need to be manually activated again .
@ For the sake of the environment
As soon as the rear w indow is clear, you
shou ld sw itch the rear window defogger
off. The reduced power consumption has a
beneficia l effect on fuel consumpt ion .
AC mode ~
Applies to vehicles: with Deluxe automatic climate con­
trol plus
Turning AC off
.. Press the IAC ! button.
Turning AC on
.. Press the IAC ! bu tton again.
The cooling system is turned on in AC mode .
T he heating and vent ilation system is control­
l ed automatically .
(D Tips
If the LED in the sw itch does not illumi­
nate after AC mode has been turned on(=
turning the AC off), there is a fault in an
air-conditioning component. Please con­
su lt a authorized dealersh ip if the re is an
operating problem .

Warm and cold 89
Air vents
Applies to vehicles: w it h Deluxe automatic climate control plus
Air distribution determines the air flow from the individual vents.
Fig. 102 Instrument pa nel: Locat ion of air vents
Vents @and @
• Ro tat e the thumbwheel located next to the
outlet to open or close it.
• To adjust the direction of the airflow from
the outlet, move the tab in the center of the
outlet in the desired direct ion. The direction
of the air delivered from the vents can be
adjusted horizontally and vertically.
The air out lets are actuated either automati­
cally or manually depending on the operating
mode selected. Heated or unheated fresh air
or cooled a ir flows from vents(!) through @.
(D Tips
If the climate control is running in cooling
mode, air flows mainly from vents @and
@. To achieve adequate cooling, you
should never close these vents complete ly .
Rear air vents
Applies to vehicles: with Del uxe automatic climate con­
tro l pl us
The rear air vents ore located in the center
console.
• Rotate the thumbwheel to open and close
the vents .
• To adjust the direction of the airflow from
the outlet , move the tab in the center of the
outlet in the desired direction. The direction
of the a ir delivered from the vents can be
adjusted hor izonta lly and vert ically .
The air vents are actuated either automat ical­
ly or manually depending on the operat ing
mode selected . Heated or unheated fresh air,
or cooled air flows from the vents .
The air vents to heat the rear footwell are lo­
cated under the front seats.

90 Warm and cold
If the climate control is operating in cool­
ing mode, a ir flows primarily from the
vents in the center console. To achieve ad­
equate cooling, you should never close
these vents completely.
Economical use of the climate control
system
A ppl ies to vehicles: w it h Deluxe au toma tic clima te co n­
tro l p lus
Economical use of the climate control system
helps save fuel.
When the climate contro l system is working in
coo ling mode, engine performance is reduced
and fuel consumption is affected. To keep the
time the cl imate control system is on as short
as possible, you should do the follow ing:
.. To save fuel, turn off cooling mode by press­
ing the AC button (indicator light goes out) .
.. In add ition, if you open the window or the
panoramic sliding/tilt ing sunroof* while
dr iv ing, turn off cooling mode by pressing
the AC button (indicator light goes out) .
.. If the vehicle is extremely hot due to the
heat of the sun, briefly open doors and win ­
dows.
@ For the sake of the environment
When you save fuel, you reduce em ission s
from the vehicle.
Deluxe automatic
climate control plus -
basic settings
General information
Ap plies to veh icles: w it h Deluxe automat ic climate co n­
tro l p lus
The basic climate control settings can be ad­
justed in the radio or MM!*.
.. Select: Funct ion button ICARI > Control but­
ton
AC .
The follow ing funct ions can be selected: -
Auto reci rculat.
q page 90
- Synchronization
q page 90
Automatic recirculation
App lies to vehicles : with Del uxe a uto mat ic clima te con­
tro l pl us
An air quality sensor detects increased con­
centrations of pollutants in the outside air
and automatically switches to recirculation
mode.
We recommend that you always keep auto­
matic recirculation ON to prevent polluted
outside air from entering the vehicle interior.
If the
air quality sensor located in the climate
control system detects polluted outside air,
the sensor dec ides whether the air pollut io n
can be reduced by the factory-installed pollu­
tant filter or w hether it is necessary to switc h
to recirculation. With heavy concentr ations of
po llutants, the climate control system is
switched automatica lly to recirc ulation mode
and the supply of o utside air is blocked . As
soon as the concentration of pollutants in the
outside air drops, fresh air is supplied to the
vehicle interior aga in .
In the event that the windows fog up during
automatic recircu lation, press the~ button
immediately .
Under certain operating conditions, automatic
recirculation is switched off automatically.
When outside temperatures are below about
SO °F (+10 °C), automatic recirculat ion is lim­
ited to 30 seconds. When outside tempera­
tures are be low about 30 °F (-1 °C), automatic
recirculation is lim ited to 15 seconds .
Synchronization
Applies to veh icles : with Del uxe a uto mat ic climate con ­
tr ol pl us
One climate control setting for all seats.
After Syn chronization is set to On , all of the
subsequent climate control settings (except
for seat heating *) for the driver are transfer-
red to the front passenger. ..,.

218 Trailer towing
Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passen­
ger transportation .
If you plan to tow a trailer, p lease remember
that the additional load will affect durability,
economy and performance .
Trailer towing not on ly places more stress on
the vehicle, it also calls for more concentra­
tion from the driver.
For this reason, always fo llow the operating
and driving instructions provided and use
common sense.
Technical requirements
Trailer hitch Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suita­
ble for your vehicle and trailer and must be
mounted securely on the veh icle's chassis at a
technically sound location. Use only a trailer
hitch with a removable ball mount. Always
check with the trailer hitch manufacturer to
make sure that you are using the correct
hitch.
Do not use a bumper hitch.
The hitch must be installed in such a way that
it does not interfere with the impact-absorb­
ing bumper system . No modifications should
be made to the vehicle exhaust and brake sys­
tems . From time to time, check that all hitch
mounting bolts remain securely fastened.
When you are not towing a trailer, remove the
trailer hitch ball mount. This prevents the
hitch from causing damage should your vehi­
cle be struck from behind
¢ A.
Trailer brakes
If your trailer is equipped with a braking sys­
tem, check to be sure that it conforms to all
regulations . The trailer
hydraulic brake system must not be
direct ly connected to the vehicle's hydraulic
brake system
~ A.
Safety chains
Always use safety chains between your vehicle
and the trai le r.
Trailer lights
T railer lights must meet all regulations. Be
sure to check w ith your authorized Audi dealer
for correct wiring, switches, and relays.
Mirrors
If you are unable to see the traffic behind you
using the regular outside mirrors, then you
must install extended mirrors . It is important
that you
always have clear vis ion to the rear.
,8. WARNING
- If a trailer has electrical brakes please
note that these brakes are not activated
by the factory-fitted control unit -risk of
accident!
- Afte r removing the trailer hitch, do not
store it in your vehicle. In case of sudden
braking, the hitch could fly forward and
injure you or your passengers.
Operating instructions
Maximum trailer weight
-
A trailer for your vehicle is limited to a typical
class 1 or class 2 tra iler.
Trailer load distribution Be sure the load in the trailer is held secure ly
in place to prevent it from shifting forward,
backward or sideways.
Never allow a passenger to ride in a trailer
¢ A in Driving instructions on page 219.
Engine cooling system
T owing a trailer makes the engine work hard ­
er. It is important that the cooling system's
performance is up to the additional load.
Make sure that the cooling system has enough
fluid . .,..

244 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 G12++ antifreeze
with anticorrosion add itives (SO% for USA
models; 60% for Canadian models). This mix­
ture bo th assures the necessary frost protec­
tion and protects metal components in the
engine's coo ling 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 antifree ze protection and cooling efficien­
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the vehi ­
cle heating and engine cooling system .
For year-round driving, antifree ze is added at
the factory for temperatures down to:
- - 31°F (- 35 °C) USA
- -40°F ( - 40°C) Canada.
You can mix the G12 ++ coolant additive with
other additives (G12+ or G12). Always check
with your authorized Audi dealer.
_&. WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ¢
A in Working in the engine
compartment on page 237.
(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 especia lly impor­
tant if you live in a reg ion where the win ­
ter is extreme ly cold. If necessary, in­
crease the proportion of coolant additive
to 60% .
- When adding coolant additive to your
cooling system, remember :
- We recommend using only coolant ad­
ditive G12++ (check the label) for your
vehicle . This coolant additive is availa­
b le at authorized Audi dealers . Other
types of antifreeze can significant ly re­
duce corrosion protection. The result­
ing corrosion can cause a loss of cool­
ant and serious engine damage.
- Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant.
Add ing radiator repair fluid may adverse ­
ly affect the function and performance of
your cooling system and cou ld resu lt in
damage not covered by your New Vehicle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
Fig. 206 E ngin e compart men t: Coo lant expans ion tank
.,. Before you check anything in the engine
compartment,
always read and heed all
WARNINGS ¢&. in Working in the engine
compartment on page 23
7.
.,. Turn off the ignition .
.,. Read the engine coolant level from the
coo lant expansion tank¢
fig. 206. With a
cold engine, the coolant level should be be-
tween the "MIN" and "MAX" markings . ..,..

When the engine is warm, the level may be
slightly above the
"MAX" marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration ¢ page 239.
To obtain an accurate reading, the engine must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System ¢page
31 will
blink until you add coolant and the level has
been restored to normal. Even though there is
an electric coolant level sensor, we still rec­
ommend you check the coolant level from
time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer.
It is not
enough merely to add coolant.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
& 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 cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise direction while ap­
plying light, downward pressure on the
top of the cap.
- To avoid being burned, do not spill anti­ freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­
ant can catch fire.
Checking and filling 245
@ Note
Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant. Add­
ing radiator repair fluid may adversely af­
fect the function and performance of your
cooling system and could result in damage not covered by your New Vehicle limited
Warranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS ¢ & in Working in the engine compart ­
ment on page 23
7.
.,. Turn off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢ page
244, fig . 206 and carefully turn
the cap counter-clockwise ¢
&_.
.,. Add coolant.
.. Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications ¢ page
244, Coolant.
Even in an emergency, if coolant addi-
tive G12++, G12+ or G12 is
not available, do
not use a different additive. Use plain water
instead until you can get the correct additive
and can restore the correct ratio. This should
be done as soon as possible.
If you have lost a considerable amount of
coolant , then you should add cold antifreeze
and cold water only when the engine is cold.
Always use new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure relief valve in the cap when the en­
gine becomes hot.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of ...,
•
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