2016 AUDI A6 radiator

-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 until you can no longer see or hear steam or coolant escap ing .
Q) Note
-Mounting additional lights or accessories in
front of the air inlets reduces the cooling ef­
fect of the radiator. At h igh outside temper­
atures or h igh engine load, the engine cou ld
ove rheat.
- The front spoiler has been designed to prop­
erly distribute the cooling air when the veh i­
cle is moving.
If the spoiler is damaged, this
could red uce the cooling effect and the en­
gine could then overheat . Ask your author ­
ized Audi dealer for assistance.
Tachometer
The tachometer displays the engine speed in rev­
olutions per minute (RPM).
You shou ld shift to the next lowest gear when
the speed is below 1500 RPM. The beginning of
the red zone in the tachometer indicates the maximum permissib le engine speed for all gears
once the engine has been broken in and when it is
warmed up to operating temperature. Before reaching the red zone, you should shift into the
next h igher gear, choose the Dor S selector lever
position, or remove your foot from the accelera ­
tor pedal.
CD Note
The tachometer needle© c::> page 10, fig. 3
should only be in the red zone br iefly: other­
w ise, this increases the risk of e ngine dam-
age. The location where the red zo ne begins
varies depend ing on the eng ine.
@, For the sake of the environment
Upshifting early helps you to save fuel and re­
duce operating noise.
In strum ents an d ind ic a to r ligh ts
Fuel level
The fue l gauge only works when the ignition is
on.
If t h e fue l level drops below 2.6 gallons (10
lite rs), the bottom LED turns red and the indica­
tor light
t]J turns on c::> page 21. The bottom
LED blinks red when the fue l level is very low.
T he possible range based on the c urrent fue l lev­
el is shown in tab@c::>
page 23, fig . 4 .
Fo r the tank capacity in your veh icle, refer to the
T echn ica l Data c::>
page 2 71.
CD Note
Never drive until the tank is completely emp­
ty. The irregu la r supply of fuel that resu lts
from that can cause t he engine to m isfire. Un­
combusted f uel w ill then en ter the exha ust
system . This can cause ove rheating and dam­
age to the catalytic converter.
Indicator lights
Description
T he ind icator lights in the instrument cluster
blink or turn on. They i ndicate functions o r mal­
funct ions c::>
.&,.
Messages may appear with some ind icator lights.
A war ning s ignal will sound at the same time.
T he ind icator lights and messages in the ce nte r
of the disp lays may be replaced by other displays.
T o s how them again, select the tab for indicator
li gh ts and messages using the m ultifunction
steering wheel c::>
page 23. If there are several
malfunctions, you can display them one at a time
us ing the thumbwheel.
Some indicators lights in the display can t urn on
in several colors.
A WARNING
- Fai lure to heed wa rning lights and other im­
portant vehicle information may result in
serious personal injury or vehicle damage.
- Whenever stalled or stopped for repair,
move the vehicle a safe d istance off the
road, stop the engine, and turn on the
emergency flasher c::>
page 47.
11

Parking systems
General information
Applies to vehicles: with parking system plus/rear view cam­
era/peripheral cameras
Depending on your vehicle's equipment, various
parking aids will help you when parking and ma­
neuvering.
The
parking system plus assists you when park­
ing by audibly and visually indicating objects de­
tected
in front of and behind the vehicle
r::!:>page 114.
The rear view camera shows the area behind the
vehicle in the Infotainment display. This display
assists you when you are cross or parallel parking
r::!:> page 115. In addition, you are assisted by the
functions from the parking system plus
r::!:>page 114.
The peripheral cameras assist you with parking
and maneuvering. You are aided by various cam­
e ras depending on the vehicle equipment leve l
¢ page 118. In addition, you are assisted by the
functions from the parking system plus
r::!:>page 114.
A WARNING
-Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver's attention. The driver is always
responsible for safety during parking and
for all other maneuvers.
-
-Please note that some surfaces, such as
clothing, are not detected by the system.
- Sensors and cameras have blind spots in
which people and objects cannot be detect­ ed. Be especially cautious of children and
animals.
- The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody. The park­
ing systems may become impaired as a re­
sult. Have your authorized Audi dealer or
qualified workshop check their function.
- Make sure the sensors are not covered by
stickers, deposits or any other obstructions
Parking systems
as it may impair the sensor function. For in­
formation on cleaning, refer to
r::!:>page203.
(D Note
-Some objects are not detected by the sys­
tem under certain circumstances:
- Objects such as barrier chains, trailer draw
bars, vertical poles or fences
- Objects above the sensors such as wall ex­ tensions
- Objects with specific surfaces or struc­
tures such as chain link fences or powder
snow.
- If you continue driving closer to a low-lying
object, it may disappear from the sensor
range. Note that you will no longer be
warned about this obstacle.
(D Tips
- The system may provide a warning even
though there are no obstacles in the cover­ age area in some situations, such as:
- certain road surfaces or for long grass.
- external ultrasonic sources e.g. from cleaning vehicles.
- heavy rain, snow or thick vehicle exhaust.
- We recommend that you practice parking in
a traffic-free location or parking lot to be­
come familiar with the system. When doing
this, there should be good light and weath­
er conditions.
- You can change the volume and pitch of the
signals as well as the display
r::!:>page 123.
-Please refer to the instructions for towing a
trailer
r::!:>page 123.
-What appears in the infotainment display is
somewhat time-delayed.
113

Parking system s
CD Note
Keep enough distance from the curb to avoid
damage to the rims .
@ Tips
The left or right orientation lines and surfaces
wi ll be displayed, depending on the turn sig­
nal being used .
Peripheral cameras
Introduction
Applies to vehicles: with peripheral cameras
With this equipment, die parking system plus* is
supp lemented with var io us peripheral cameras
qpage 114. Depending on vehicle equipment,
you are provided with the following views: Around the vehicle, front corner and rear corner,
in front of the vehicle and behind the vehicle.
General information
Applies to veh icles: with peripheral cameras
F ig . 1 30 Location of periphe ral cameras
Depending on the vehicle eq uipment, the periph ­
eral cameras are fou nd in the radiator grille, in
the luggage compa rtment lid and on both exteri ­
or mirrors *
q fig. 130. Make sure that the lenses
are not covered by deposits or any other obstruc­
tions as it may impair the system. For informa­
tion on cleaning, refer to¢
page 203.
In the Surrounding mode, black corners are
shown in the vehicle silhouette. Objects in these
areas are outside of the camera's field of v iew
and are not detected.
118
The accuracy of the orientation lines and the b lue
surfaces is reduced if the adaptive air suspen­
s ion* is fau lty, if the veh icle is lifted or if the
D y­
nam ic mode is activated qpage 100.
A WARNING
-Always read and follow the applicab le warn­
ings¢ .&
in General information on
page 113.
- If the position or the installat ion angle of a
camera was changed, after a collis ion for ex­
ample, do not continue to use the system
for safety reasons. Have it chec ked by your
authorized Audi dealer or authori zed A udi
Serv ice Facility.
- Keep in mind that the image in the display is
distorted if the exter ior mir ror ho using has
been manually adjusted.
- Use the
Rear mode and the corner view
( rear )
mode only when the l uggage com­
partment lid is fu lly closed. Otherwise the
image in the disp lay will be disto rted.
- The vehicle surroundi ngs a re shown using
the camera images. The veh icle image is
shown by the system. Objects and obstacles
above the camera are not displayed.
- Camera lenses enlarge and distort the field
of vision. The objects appear both a ltered
and inaccurate on the screen.
CD Note
- Always read and fo llow the applicable warn­
ings
¢ (Din General information on
page 113 .
-The Infotainment d isp lay shows the direc ­
tion in which the rear of the vehicle is travel­
ing based on the steering wheel ang le . The
front of the vehicle front sw ings out more
than the rear of the vehicle. Maintain plenty of distance so that your o utside mirror or a
corner of your vehicle does not collide with
any obstacles.
(I} Tips
If the 8/(J;(SJ/c:, symbol appears in the dis­
play and the respective display area is grayed
out, then the power exter io r mir rors we re
fo lded in or the dr ive r's door/front

Checking and Filling
Checking and Filling
Hood
Releasing the engine hood
The engine hood is released from inside the vehi­
cle .
Fig. 184 Driver footwell: release leve r
Fig . 185 Rocker switch under the hood
Make sure the wiper arms are not raised up from
the windshield . Otherwise the paint could be
damaged .
.. With the driver's door open, pu ll the lever un ­
der the instrument panel in the direction of the
arrow ¢
fig. 184.
.. Raise the hood slightly Q _A .
.. Press the rocker switch under the hood upward
Q fig. 185. This releases the catch.
.. Open the hood.
A WARNING
Hot engine coo lant can burn you .
- To reduce the risk of be ing burned, never
open the hood if you see or hear steam or
coolant escaping from the eng ine compart­
ment. Wait unt il no steam or coolant can be
216
seen or heard before carefully open ing the
hood.
Working in the engine compartment
Be especially careful whenever you work in the
engine comportment.
Whenev er yo u mu st perform an y work in the
engin e compartment , for example ch ecking and
filli ng d iffe rent fl uids , the re is a risk of injury ,
bu rn s and a ccid ents . To pre ve nt p erso nal injur y
a lway s obse rve the foll owing WARNING S. The
e ng ine compartment o f an y v ehicl e is a haz ard ­
ou s a rea
Q _6 .
A WARNING
To he lp avoid injury, before you check any­
thing under the hood:
- Turn off the engine .
- Switch off the ignit ion.
- Apply the parking brake.
- Move selector lever to P (Park).
- Always let the eng ine cool down. Hot com-
ponents will burn skin on contact .
-
-To redu ce the risk of being burned, never
open the hood if you see or hear steam or
coo lant escaping from the engine compart­
ment . Wait until no steam or coolant can be
seen or heard before carefully open ing the
hood.
- Keep children away from the engine com­
partment .
- Never sp ill fluids on hot engine compo­
nents. They can cause a fire.
- Never touch the radiator fan. The auxiliary
electric fan is temperature controlled and
can switch on suddenly.
- Never open the coolant reservoir cap when
the engine is sti ll warm. The coolant system
is pressurized and hot coolant could spray
out.
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir .

-Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
- If work on the fuel system or the electrical
system is necessary:
- Always d isconnect the battery.
- Never smoke or work near heaters or open
flames. Flu ids in the engine compartment
could start a fire.
- Keep an app roved fire ext inguisher imme­
d iate ly availab le.
- To avo id electr ical shock and personal injury
wh ile the eng ine is running or being started,
never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repa ir with
the engine running:
- First, fully apply the parking brake, move
selector lever to P (Park) .
- Always use extreme caution to prevent
cloth ing, jewelry, or long hair from get­
ting caught in the radiator fan, V-belts or
other mov ing parts, or from contacting
hot parts. Tie back ha ir before starti ng,
and do not wear clothi ng that will hang or
d roop into t he engine.
- Min imize exposu re to emission and chem i­
cal hazards¢ .&.-
_& WARNING
California Proposition 65 Warn ing:
- E ngine exhaust, some of its constituents,
and certain vehicle components contain or
em it chem ica ls known to the St ate of C ali­
f orn ia to cause cancer and bi rth de fects and
reproductive harm . In addition, certain flu­
ids contained in ve hicles and certain prod­
ucts of component wear contain or emit
Ch eck ing and Filling
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, term inals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of Californ ia
to cause cancer and reproductive harms.
Was h hands afte r handling .
([) Note
When adding flu ids, always make sure that
they are poured into the proper co nta iner or
fille r opening, otherwise serious damage to
vehicle systems w ill occur.
® For the sake of the environment
To detect leaks in time, inspect the veh icle
floor pan from unde rneath regularly. If you
see spots from oil or other veh icle fluids, have
your vehicle inspected by an authorized Audi
dealer.
Closing the engine hood
.,.. Pull the hood down un til the press ure from the
struts is reduced.
.,.. Let the hood
drop down and latch in p lace . Do
not try to push it shut;
it may fail to engage
¢ _& .
_& WARNING
--A hood that is not completely latched co uld
fly up and block your view while driv ing.
- When you close the engine hood, check it to
make sure the safety catch has properly en­
gaged . The hood s hou ld be flush with the
sur rounding vehicle body parts.
- If you notice while driv ing that the hood is
not secured properly, stop at once and close
it.
-
217

Checking and Filling
areas, into open streams or down sewage
drains.
- Recycle used engine oil by taking it to a used
engine oil collection facility in your area, or
contact a service station.
Cooling system
Coolant
T he 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 factory
with a permanent coolant which does not need to be changed . The coolant consists of a mixture of
specially conditioned water and the manufactur ­
er's glycol-based coolant additive G13 antifreeze
with anticorrosion additives (50% for USA mod­
els · 60% for Canadian models). This mixture
'
both assures the necessary frost protection and
protects metal components in the engine 's cool­
ing system from corrosion and scaling. It also
raises the boiling point of the coolant.
Do not reduce the concentration of the coolant in
the summer by adding plain water.
The propor­
tion of coolant additive must be at least 50% but not more than 60%
to maintain antifreeze
protection and cooling efficiency. If the coolant
frost protection is too low, the coolant could
freeze and damage the vehicle heating and en­
gine cooling system .
For year-round driving, antifree ze is added at the
factory for temperatures down to:
- -31 °F ( -3 5 °C) USA
- - 40 °F ( - 40 °C) Canada.
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
_& WARNING
Before you check anything in the engine com­
partment, always read and heed all WARN-
222
INGS ~&. in Working in the engine compart­
ment on page 216.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in your
vehicle is sufficient to meet the climate con­ ditions. This is especially important if you
live in a region where the winter is extreme­
ly cold . If necessary, increase the proportion
of coolant additive to 60%.
- When adding coolant additive to your cool­
ing system, remember:
- We recommend using only coolant addi­
tive G12++ or G13 (check the label) for
your vehicle. This coolant additive is avail­
able at authorized Audi dealers. Other
types of antifreeze can significantly re­
duce corrosion protection. The resulting
corrosion can cause a loss of coolant and
serious engine damage .
- Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Adding ra ­
diator repair fluid may adversely affect the
function and performance of your cooling
system and could result in damage not cov­
ered by your New Vehicle Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with a
quick glance.
Fig. 189 Eng in e compar tment: cover on the cool ant expan­
s ion tank
Before you check anything in the engine compart­
ment,
always read and heed all WARNINGS
~ A in Working in the engine compartment on
page 216. ..,.

• Park your vehicle on a level surface.
• Switch
off the ignition.
• Read the engine coolant level from the coolant
expansion tank¢
fig. 189, ¢ page 218,
fig. 186.
With a cold engine, the coolant level
should be between the "min" and "max" mark­
i ngs . When the engine is warm, the level may
be s light ly above the "max " marking.
The location of the coolant expans ion tank can be
seen in the engine compartment illustrat ion
¢pag e 218.
To obtain an accurate reading, the engine must
be sw itched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System
c:> page 15 wi ll il­
luminate until you add coolant and the level has
been restored to normal. Even though there is an
e lectric coolant level sensor, we still recommend
you check the coolant level from t ime to t ime.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cooling
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 coo lant is exceeded as a re­
sult of overheat ing.
A WARNING
The cooling system is under pressure and can
get very hot . Reduce the risk of scalding from
hot coolant by following these steps.
- Turn off the eng ine and allow it to cool
down.
- Protect your face, hands and arms from es­
caping 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 applying
light, downward pressure on the top of the
cap.
Checking and Filling
-To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or
hot engine parts. Under certain cond itions,
the ethylene glycol in engi ne coolant can
catch fire.
(D Note
Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Add ing radia­
tor repair fluid may adversely affect the func­
tion 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 compart­
ment,
always read and heed all WARNINGS
¢.&. in Working in the engine compartment on
page 216.
• Requ irement: There must be a residual amount
of coolant in the expansion tank
c:> (D .
•Turnoff the engine .
• Let the engine cool down.
• Place a thick rag over the coolant expans ion
tank
c:>p age 222 , fig. 189 and carefully twist
the cap counter-clockwise
c:> _& .
• Add coo lant mixed in the correct ratio
c:> page 222, Coolant up to the MAX marking .
• Make sure that the fluid level remains stable.
Add more coolant if necessary.
• Twist the cap on again
tightly.
Replacement engine coolant must conform to ex ­
act specifications
c> page 222, Coolant.
We recommend using only coolant additive Gl2+
+ , Gl3
or in an emergency Gl2+. Do not use a
different additive. In an emergency use plain wa­
ter 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 coo l­
ant, then you should add cold antifreeze and cold
water only when the engine is co ld.
Always use
new engine coolant when refi lling.
223

Check ing and F illing
Do not fill coolant above the "MAX" mark. Excess
coo lant wi ll be forced out through the pressure
relief valve in the cap when the eng ine becomes
hot.
A WARNING
- The cooling system is under pressure and
can get very hot . Reduce the risk of scald ing
from hot coolant by followi ng these steps.
- Tu rn off the engine and allow it to coo l
down.
- P rotect your face, h ands and arms from
escaping f lu id and steam by cover ing the
cap with a large, thick rag.
- Tu rn the cap slowly and very carefully in a
co unter -clockw ise direction while applying
light, downward p ressure on the top of
the cap.
- To avoid being bu rned, do not spill anti­
freeze or coolant on the exhaust system or
hot engine parts. Under certa in condi­
tions, the ethylene glycol in eng ine cool­
a nt can catch fire.
- Antifreeze is poisonous. A lways store anti­
freeze in its original container and well out
of the reach of children .
- If you dra in the coolant, it must be ca ught
and sa fely stored in a proper conta iner
clearly mar ked "poison".
(D Note
- Do not add coolant if the expansion tank is
empty . A ir cou ld enter the cooling system
a nd damage the eng ine. If this is the case ,
do no t continue dr iving. Seek professional
ass istance .
- Coolant pollutes t he e nvironment a nd could
cause an eng ine fire . Excess coolan t will be
fo rced o ut through th e pressure relief valve
i n the c ap whe n the eng ine be comes hot.
- If, in an emergency, o nly wate r can be add­
ed, the co rrect ratio between wate r and an­
ti fr ee ze ~
page 222 mu st be resto red a s
soon as possib le.
224
-
® For the sake of the environment
D raine d coolant should not be re use d. Always
d ispose of used coolant while observing a ll
environmental regulations.
Radiator fan
The radiator fan switches on automatically by it­
self
An a uxiliary e lectric ra diator fan switches on and
off depending on coo lant temperature and other
vehicle ope rating conditions .
A ft er yo u sw itc h t he engi ne off, the a uxi liary fan
can con tinue running for up to 10 m inutes -even
with t he ignitio n off .
It can even switch on again
l ater by itself~& . if
- t he tempera ture o f the engine coolan t rises d ue
to the heat build -up from the engine in the en­
gine compa rtment, or
- t he engine compar tment heats up beca use the
vehicle is pa rked in intense s unlight.
A WARNING
- To red uce the r is k of personal injury never
to uch the radiator fan .
- The a uxiliary e lectric fan is temperat ure
controlled and can switch on s uddenly even
when the engine is not running.
-
- The a uxiliary radiator fan switches on auto­
mat ically when the eng ine coolant reaches a
certain temperature and will continue to run
until the coo lant temperature d rops.