2013 AUDI A6 cooling

Warm and cold 67
Four-zone automatic climate control
Operation
Applies to vehicles: with four -zone a utomat ic climate control
We recommend pressing the IAUTOI button and setting the temperature to 72 °F (22 °C).
F ig. 69 Four -zone automat ic climate control: controls
Fig. 70 F our -zone automat ic climate control: rear con·
trols
Press the buttons to turn the functions on or
off. Use the dials to adjust the temperature,
the blower speed and the air distribution. The
LED in a button will light up when the func­
tion is switched on. The settings are shown in
the climate control display and are also shown in the MMI display for a few seconds . The driv­
er and front passenger settings can be adjust·
ing separately.
The settings can also be adjusted in the rea r
<::>fig.
70.
IOFF l Switching the climate control
system on/off
The IOFFI button switches the climate control
system on or off .
It also switches on when you
turn the dial or press any button. Airf low from outside is blocked when the
climate control
system is switched off.
You can activate the residual heat funct ion
when the ignition is off by pressing and hold­
ing the ~ button. The residual heat from the
coolant is used to heat the vehicle interior.
The residua l heat function switches off auto­
matically after about 30 minutes.
IACI Switching cooling mode on /off
T he air is not coo led and humidity is not re­
moved when cooling mode is switched off.
This can cause fog on the windows. Cooling
mode switches off automatically when the
outside temperature is below zero.
1- 1 Switching recirculation mode on/off
In recircu lation mode, the air inside the vehi ­
cle is circ ulated and filtered. This prevents the
unfiltered air outside the vehicle from enter­
ing the vehicle interior. We recommend
switching recirculation mode on when driving
through a tunnel or when sitting in traffic
¢ Li). .
The !AUTO ! button or~ button switches recir-
culation mode off. .,..

68 Warm and cold
IAUTO I Switching automatic mode on
Automatic mode m ainta ins a constant tem­
perat ure inside the vehi cle. Air tempera ture,
airflow and air d istribution a re controlled a u­
tomatically.
Adjusting the temperature
T empe ratu res between 60 °F (+16 °C) and
84 °F ( +28 ° C) c an be se t. O uts ide of this
range,
lo or hi w ill appear in the climate con ­
trol system disp lay. At both of these settings,
the cl imate control system r uns continuously
at max imum cooling or heat ing power. There
is no temperature regu lation.
~ Adjusting the airflow
You can a djust the airf low manually to s uit
your needs . To have the airf low reg ulated a u­
tomatically, press the
! AUTO ! button.
~ Adjusting the air distribution
You can manu ally se lect the ve nts w here the
a ir will flow. To have the air d istribu tion reg u­
l ated automatically, press the
IAUTOI bu tton.
~ I~ * Adjusting seat heating/
ventilat ion*
Pr ess ing the button swi tches the sea t heat­
ing/ventilation on at the highest sett ing ( leve l
3). The LEDs indicate the heating/venti lat ion
leve l. To reduce the heating/vent ilation, press
the butto n aga in. To switch the seat heat ing/
ve nti lation off, press the button repeatedly
u ntil the LED turns off.
After 10 minutes, the seat heating automati­
cally switches from leve l 3 to level 2.
l <;j) FRON T I Switch the defroster on/off
The win dsh ield and s ide windows are defrost­
e d or cleared of con densation as quickly as
possib le. The max imum amo unt of air flows
mainly from the vents be low the windshield.
Recirculation mode switches off.
The
IAUTOI bu tton switches the defroster off.
lliiil REAR ! Switching rear window heater
on /off
T he rea r window heate r only operates w hen
the engine is running. It sw itches off auto­
matically after 10 to 20 minutes, depending
o n the outside temperature.
T o p revent the rea r window heate r from
switching off automatically, p ress and ho ld
t h e ~ button for more than 2 seconds. Th is
rema ins stored until the ignition is switched
off .
ISYNC I Synchronization*
When synchronization is switched on, the
same settings are applied to bot h the dr iver
and fr ont passenger, except for the seat heat­
i ng/venti lation *. The rear zo ne is also
synchronized. Synchronization switches off
whe n the se ttings for the front passenge r side
o r r ear are ad justed.
You can also switch synchronizati on o n by
pressing and holding a dial. For example, if
you press and hold t he di al on the front pas­
senger si de, the setti ngs for that s ide a re
t ran sfer red to t he d rive r si de. The same ap ­
plies to the re ar.
Air vents
You can open o r close the center and ou ter
vents i n the cockpit and the vents in the rear
c ente r console and doo r pillars us ing t he
ridged t humbwheels. The levers adjust the d i­
r ect ion o f the airfl ow from the vents.
A WARNING
-Do not use t he recirc ulation for ex tended
pe riods of time . The windows could fo g
up since no f resh a ir can enter the vehi­
cle. If the windows fog up, p ress the air
recirc ulation butto n again immediately
to switch off the air reci rcu latio n fu nc­
tion o r se lect defros t.
- Individ uals w it h reduced se nsitivity to
pa in or te mperature cou ld deve lop burns
when us ing the s eat heating fu nction . To
re duc e the risk of i nju ry, these i nd iv idu-
als should n ot us e sea t heating.
~

204 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.
@ Note
If you are going to tow a trai ler, you must
activate the trailer operation mode
c:::> page 204, Operating instructions.
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. A lways
check with the trai ler hitch manufacturer to
make sure that you are using the cor rect
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
trai ler hitch ball mount. This prevents the
h itch from causing damage should your veh i­
cle be struck from behind
c:::> A .
Trailer brakes
If your trailer is equipped with a brak ing sys­
tem, check to be sure that it conforms to all
regulations.
T he trailer hydraulic brake system must not be
directly connected to the vehicle's hydraulic
brake system .
Safety chains
Always use safety chains between your veh icle
and the trailer.
Trailer lights
Trailer lights must meet all regulations. Be
sure to check with your 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 v is ion to the rear .
A WARNING
--
After removing the trailer hitch, do not
store it in your vehicle . In case of sudden
braking, the hitch could fly forward and in­
jure you or your passengers.
Operating instructions
Maximum trailer weight
A tra ile r for your vehicle is limited to a typical
class 1 or class 2 tra ile r.
Trailer load distribution
Be sure the load in the trailer is held securely
in place to prevent it from shift ing forward,
backward or sideways.
Never allow a passenger to ride in a trailer
c:::> A in Driving instructions on page 206 .
Engine cooling system
Towing 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
f luid .
Tire pressure
When tow ing a trai ler, inflate the t ires of your
vehicle to the cold tire pressure listed under
"Full load" on the label located on the driver's
side B-pillar (visible when the door is open).
Inflate trailer tires to trai ler and tire manufac­
turers' specifications.
Lights
Check to make sure both veh icle and trailer
lights are working properly.
Safety chains
Be sure tra iler safety cha ins are properly con­
nected from the trailer to the hitch on the ve­
hicle. Leave enough slack in the chains to per ­
mit turning corners . When you install safety
chains, make sure they wi ll not drag on the
road when you are driving.
The chains should cross under the tra ile r
tongue to prevent it from dropping in case of
sepa ration from the hitch.
Adjusting the Audi drive select
Make sure the veh icle is on a level surface be­
fore hitching up the tra iler and before adjust­
in g the tongue weight. The vehicle must be in
auto or comfort dr iving mode and not raised
qpage 98, q(D .
Make sure that the vehicle is lowe red. In Info­
tainment, se lect:
ICARI f u nction button> Low­
er
control button.
If you must drive under poor road condit ions,
you can raise the veh icle
after coupling the
traile r or
after adjusting the tongue weight
qpage 100.
- Changes in temperatu re or load can af­
fect the height of the veh icle.
- Always se lect
auto or comfort mode.
Otherwise, the tongue load spec ified for
you r vehicle will no longer be applicable.
Trailer towing
Driving instructions
Driving with a trailer always requires extra
care and consideration .
To obtain the best possible handling of vehicle
and trailer, please note the following:
... Do not tow a loaded trailer when your car it­
self is not loaded.
... Be especially careful when passing other
veh icles.
... Observe speed lim its .
... Do not dr ive at the maximum permissible
speed.
... Always apply brakes early .
... Monitor the temperature gauge.
Weight distribution
Towing a loaded trailer with an empty car re­
sults in a highly unstable distribution of
weight. If this cannot be avoided, drive at very low speeds only to avoid the risk of losing
steering control.
A "balanced" rig is easier to operate and con­
trol. This means that the tow vehicle should
be loaded to the extent possible and permissi­
ble, while keeping the trailer as light as possi­
ble under the circumstances. Whenever possi­
ble, transfer some cargo to the luggage com­
partment of the tow vehicle while observing
tongue load requirements and vehicle loading
considerations.
Speed
The higher the speed, the more difficult it be­
comes for the driver to contro l the rig. Do not
drive at the maximum permissible speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -particularly
when going downhill.
Reduce vehicle speed
immediately if the trail­
er shows the slightest sign of swaying.
Do not
try to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds
for vehicles towing trailers are lower than for
regular vehicles. .,.
205
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232 Check ing 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-based coolant additive Gl3 ant ifreeze
with ant icorros ion add itives (50% for USA
models; 60% for Canad ian models). This mix­
ture both assu res the necessary frost protec­
tion 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 o f the coo l­
ant in the summer by adding plain water .
The
propo rtion of coolant add it iv e mu st be at
l eas t 50 % but not mo re than 6 0%
to main­
tain antifree ze protection and cooling efficien­
cy. If the coolant frost protect ion is too low,
the coolant could freeze and damage the veh i­
cle heating and eng ine 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.
A WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
c:> &. in Working in the engine
compartment on page 225.
- Before winter sets in, have the coolant
checked to see if the coo lant addit ive in
your vehicle is suffic ient to meet the cli­
mate cond itions. Th is is especially impor­
tant if you live in a region where the w in- ter is extreme
ly cold . If necessary, in ­
crease the proportion of coo lant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend us ing only coolant ad­
d itive Gl2++ or G l3 (check the labe l)
fo r your vehicle. This coolant additive is
ava ilable at a utho rized Aud i dea le rs.
Other types of antifreeze can sign ifi­
cantly reduce corros ion protection. The
res ulting corrosion can cause a loss of
coolant and serious engine damage.
- Do not add any type of radiator leak seal ­
ant to yo ur vehicle's engine coolant .
Add ing radiator repair flu id may adverse­
ly affect the function and performance of
your cooling system and could resu lt in
damage not covered by your New Veh icle
Limited War ranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 1 87 Engin e compar tmen t: cover on t he coo la nt
expansio n ta nk
Before you check anyth ing in the engine com­
partment,
alwa ys read and heed all WARN­
I NGS c:> &. in Working in the engine compart ­
ment on page 225 .
.. Park your vehicle on a level surface .
.. Switch off the ignition.
.. Read the engine coolant level from the
coola nt expansion tank
c:> fig . 187,
c:> fig. 184 . With a cold engine, the coolant
level shou ld be between the "min" and
"max" markings. When the eng ine is wa rm, ..,.

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 22 7.
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 16will
illuminate until you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor , we
still recommend 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 233
@ 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 225 .
.,. Turn
off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢ fig .
187 and carefully twist the cap
counter-clockwise ¢&_ .
.,. Add coolant.
.,. Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications ¢ page
2 32, Coolant. We
recommend using only coolant additive G12+
+, G13 or in an emergency G12+. Do
not use a
different additive. In an emergency use plain
water 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
II-
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292 Index
Checking Engine coolant level ................ 232
Tire pressure . ............. ... .... . 246
Ch ild restra ints
Danger of using child restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . . 147
Where can I get additional information
about child restraints and their use? .. 189
Child restraint system anchors ... .... . 185
Child safety .. .. . .......... .. .. .... . 171
Convertible locking retractor .. .. .. .. . 182
Important safety instructions for us ing
chi ld safety seats ......... .. .. .... . 175
I mportant things to know when dr iving
with chi ldren . ............... .... . 171
Tether anchors ............ ... .... . 188
Tether straps ..................... 188
Child safety lock Rear doors .............. .. .. .... .. 38
Child safety seats .......... .... .... . 177
Booster seats . .......... ... .. .. ... 180
Convertible ch ild seats .... .. .. .. .. . 178
Convertible locking retractor .. .. .. ... 182
H ow do I proper ly install a child safety
seat in my vehicle? ...... .. .. .. .. .. . 175
I nfant seats .............. ... .... . 177
I nstalling . ............... ... .... . 182
Installing a child restraint using the
LATCH system ................ .... . 187
LATCH system ............ .... ..... 187
Lower anchorages ............ ..... 186
Mounting and releasing the anchorage
hook .. .. .. ... .... ...... ... ... .. . 187
Safety instructions . . . . . . . . . . . . . . . . . 17 5
Unused safety belts on the rear seat .. 177
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . 56
C leaning
Head-up Display .............. .... . 215
Matte finish paint ............ .... . 210
C leaning and protection ..... .. .. .. .. . 208
A lcantara (synthet ic suede) .......... 218
Engine compartment ....... .... ... . 219
Exhaust tail pipes .......... ... .... . 214
Fabrics and fabric coverings .. .. ..... 215
Instrument panel ............. ..... 216
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Leather . . . . . . . . . . . . . . . . . . . . . . . . . . 217
MMI display/controls .. ... ... .. .. ... 214 Plastic
and vinyl . .............. .... 212
Plastic parts . . . . . . . . . . . . . . . . . . . . . . 216
Safety be lts ... .. ................ . 218
trim strips ................... .... 212
Trim strips ................... .... 212
Cleaning the Head-up Display ......... 215
Climate control Air vents . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Climate controls . .. ............. .. .. . 64
Climate control (four-zone)
Operation ..... .. .. .............. .. 67
Climate control (three-zone) Operation . . . . . . . . . . . . . . . . . . . . . . . . . 65
Clock ...... .... .................... 27
Closing Sliding/tilting sunroof ............... 40
Cold tire inflation pressure ........ .. .. 244
Coming home ....................... 43
Compact spare tire ................. . 262
Compartments . . . . . . . . . . . . . . . . . . . . . . 57
Compliance ..... .. .. .............. . 288
Consumer Information . . . . . . . . . . 134, 285
Consumption (fuel) ............. .... . 24
Contacting NHTSA .............. .... 134
Convenience key . .. ... ........... ... . 35
Starting the engine ............ .... . 71
Stopping the engine (START ENGINE
STOP button) . . . . . . . . . . . . . . . . . . . . . . 73
Switching the ignition on ........ ... . 71
Unlocking and locking vehicle .... .. .. . 35
Convertib le child safety seats ..... .... 178
Convertible locking retractor Activating ... .. .. .. ..... ...... .. .. 184
Deact ivating . .. .. ... ....... ... .. .. 184
Using to secure a child safety seat 1.82, 184
Coolant
refer to Engine coolant ............. 232
Cooling mode (automatic climate control) 67
Cooling mode (climate control) . . . . . . . . . 65
Cruise contro l
Changing speed .. ............. .... . 80
Presetting your speed .............. . 80
Switching off . . . . . . . . . . . . . . . . . . . . . . 80
Switching on . . . . . . . . . . . . . . . . . . . . . . . 79
Warning/ind icator lights ........... .. 23
(upholder .. .... ............... ..... 57

Unlocking Power lock ing switch ... ... ... ... .. .. 36
Remote control . . . . . . . . . . . . . . . . . . . . 34
Us ing the key ... .. .... ... .... .. .. .. 36
V
Va let parking ...... ..... ... .. .. .. .. .. 39
Vanity mirrors .... ......... .... .. .. .. 45
Vehicle-care produ cts ....... .. .. .. .. . 208
Vehicle e lectrica l system . . . . . . . . . . . . . . 17
Vehicle ident ificat ion label ....... ... .. 280
Vehicle Identification N umber (VIN) . .. . 280
Vehicle jack . . . . . . . . . . . . . . . . . . . 262, 266
Vehicle literature . . . . . . . . . . . . . . . . . . . . . 5
Vehicle transport .. ..... ... .. .. .. .. . 278
Vent ilation .. .. .. .. .. .... ... .. .. .. .. 64
w
Warn ing/ indicator lights ......... .... . 12
A irbag system ............ ... ... ... 19
Anti-loc k braking system (ABS) .. .. .. .. 20
Brake system . ........... .. .. .. .. .. 15
C ruise control . . . . . . . . . . . . . . . . . . . . . . 23
Elect romechanical park ing brake . ... .. 1 6
Electronic power contro l . . . . . . . . . . . . . 21
Electronic Stabilization Control (ESC) ... 19
Generator . . . . . . . . . . . . . . . . . . . . . . . . . 17
Instrument cluster. . . . . . . . . . . . . . . . . . 11
Malfunct ion Indicator Lamp (MI L) ... .. 21
Safety belt . . . . . . . . . . . . . . . . . . . . . . . . 17
Turn signa ls ... ........... ... ... ... 23
Warn ing/Ind icator lights
A irbag system . . . . . . . . . . . . . . . 157, 158
PASS ENG ER A IR BAG OFF ...... ... .. 158
Warranty coverages ..... ... .. .. .. .. . 285
Washer reservoir . ...... ... .... .. ... 239
Washing .. .. ................. .. ... 208
Automatic car wash ....... .. .. .. .. . 209
by hand . ... .. .... .... ..... ... ... . 209
Matte fin is h pa int ........... .... .. 210
with a powe r washe r ... ... .. .. .. .. . 210
Waxing ... .. ................. .. ... 212
Wear ind icator ............ .... .. .. . 250
Weights . .. ... ................... .. 280
W hat happens if you wear your safety belt
too loose? . .. .. ........... .. .. .. ... 140
Inde x 301
What happens to unbe lted occupants? . . 137
What impairs d riving safety? .......... 127
What should I do after changing a
whee l? ..... .. .. .. ................. 247
What shou ld I do after replac ing whee ls? 247
Wheel bolts To rque ...... .. .... .......... ..... 257
Wheels ...... .. .. ................. 240
Cast alloy . .. .. .. .... ............. 213
Check ing t ire pressu re ............. . 246
Co ld t ire inflation p ressure ..... ... .. 244
General notes .. ... ...... .......... 240
G lossary of tire and loading term inolo-
gy ....... .. .. .. .. .. ........... .. 241
New tires and wheels . ... .... ... .. .. 251
Tires and vehicle load limits .. ... .. .. 248
When must a safety belt be replaced? .. 139
When must the airbag system be inspect- ed? ........ .. .. .. ................. 157
When should I adjust the t ire pressures? 247
When should I check the tire p ressu res? . 247
Whe re are lower anchorages located? . .. 186
Where can I find the t ire p ress ures for my
car? .. ... .. .. .. .. .. . .. ... .... ... .. 246
Why safety belts? . . . . . . . . . . . . . . 136, 137
Windows Cleaning .. .. .. .. ................. 213
defrosting (automatic climate control) . 68
defrosting (climate control) . . . . . . . . . . 66
Windshie ld
Cleaning . ... .... .. . .. .. ..... ... .. . 46
defrosting (automatic climate control) . 68
defrosting (climate control) . . . . . . . . . . 66
Windshie ld washer system .... ... .. .. . 46
Washer fl uid level . .. .. ..... ... .. .. . 22
Washer reservoir ... . ... .... ... .. .. 239
Windshie ld wipers
F o ld ing up .. .. .. ................. . 47
Ind icator light ..... . .. .. ..... ... .. . 22
Rep lacing windsh ield wiper b lades . ... . 47
Switching on/off .... .. ..... ... .. .. . 46
Win ter operation
Battery . .. .. .. .. .... ........... .. 235
Cooling system ... .. .. ... ..... ... .. 232
Defrost ing windows (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Defrost ing windows (climate control) . . 66
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