2016 AUDI A6 light

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Brake fluid
Checking brake fluid level
Fig. 190 Engine compartment : cover on t he brake fluid
reservoir
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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.
.,. Read the brake fluid level from the brake fluid
reservoir
¢fig. 190, ¢page 218, fig. 186. The
brake fluid level must be between the "MIN "
and "MAX" markings.
The location of the brake fluid reservoir can be
seen in the engine compartment illustration
¢page 218.
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 below
the "MIN" mark, the brake warning/indicator
light
1111 (U.S. models) ;II (Canadian models)
will come on¢
page 14. Do not continue to oper­
ate the vehicle. The complete brake system
should be thoroughly checked by an authorized
Audi dealer or other qualified facility and the
cause corrected. If the brake fluid level is too
low, the brake warning/indicator light will illumi ­
nate. Contact an authorized Audi dealer
immedi­
ately.
Checking and Filling
Changing brake fluid
Have the brake fluid changed by an experienced
technician .
Brake fluid absorbs moisture from the air. If the
water content in the brake fluid is too high, cor­
rosion in the brake system may result after ape ­
riod of time . The boiling point of the brake fluid
will also decrease considerably and decrease
braking performance.
Therefore, the brake fluid must be changed
every
two years . Always use new brake fluid which con­
forms to Federal Motor Vehicle Standard "FMVSS
116 DOT 4" .
The brake fluid reservoir can be difficult to reach,
therefore, we recommend that you have the
brake fluid changed by your authorized
Audi
dealer. Your dealer has the correct tools, the
right brake fluid and the know-how to do this for
you.
A WARNING
- Brake fluid is poisonous. It must be stored
only in the closed original container out of
the reach of children!
- Brake failure can result from old or inappro­
priate brake fluid . Observe these precau­
tions:
- Use only brake fluid that meets SAE speci­
fication
J 1703 and conforms to Federal
Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make
sure you are using the correct brake fluid.
The correct type of brake fluid is also indi­
cated 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 long.
This can seriously affect the efficiency of
the brakes as well as your safety. This
could result in an accident.
(D Note
Brake fluid will damage the paint of your vehi-
cle.
IJ>
225

Check ing and F illing
@ For the sake of the environment
Because of the prob lem of proper disposal of
brake fluid as we ll as the special tools re­
quired and the necessary expertise, we rec ­
ommend that you have the b rake fluid
changed by your author ized Audi dealer .
Battery
General information
Under normal operating conditions, the battery
in your Audi does not need any maintenance.
W ith
high outside temperat ures or long da ily
drives we recommend that you have the electro­
lyte level checked by a service fac ility . The elec­
trolyte level should also be chec ked eac h time
the battery is charged ¢
page 228 .
Have the battery checked when you take your ve­
h icle in for service. You a re well advised to re­
p lace a battery t hat is o lder than S years .
W ith certain types of a irbag dep loyment, the
battery is disconnected from the vehicle electr i­
cal system for safety reasons
¢ &. in Repair, care
and disposal of the airbags on page 157 .
Disconnecting the battery terminal s
Some vehicle functions (power window reg ula­
tors, for example) are lost i f th e battery termi ­
na ls are disconnected. These functions have to be
relearned after the battery termina ls are con­
nected aga in. To prevent th is , the batte ry shou ld
only be disconnected from the vehicle e lectr ica l
sys te m when abso lutely ne cessary for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period of
seve ral days or weeks, electrical components a re
gradua lly cut back or sw itched off . T hi s reduces
e n ergy cons umption and ma inta ins starti ng ca­
pab il ity over a longer pe riod
¢ page 192. Some
of the conve nience f unct io ns may not o pera te,
such as the inter io r lig hts or powe r seat a dju st­
ment . The convenience funct ions wi ll be avai lab le
again when you switch on the ignition and start
the engine.
226
Winter operation
Dur ing the winte r mon ths, ba ttery c apacity tends
to decrease as tempe ra tu res drop . This is be ­
ca use mo re power is also consume d while start ­
i ng, and the headlights, rear window defogger,
etc., are used more often.
Avo id unne cessary powe r consum ption, pa rticu­
l arly in city traffic or when traveling on ly short
distances . Let your author ized Audi dealer check
t h e capacity of the vehicle battery before winter
sets in~
page 228. A we ll charged battery will
not only p reve nt sta rting prob lems when the
weather is cold, but will also last longer.
(D Tips
If yo ur vehicle is left standing for several
weeks at extreme ly low temperatu res, the ve­
hicl e battery should be re m oved a nd stor ed
where it will not freeze. This w ill preven t it
fro m bei ng damaged and hav ing to be re­
p lac ed .
Working on the battery
Be e specially car eful when working on or near
t he bat tery.
The battery is loca ted in the luggage com part­
ment under the floo r. Befo re yo u check anything
i n the luggage compa rtment,
read and heed all
WARNINGS ¢
.cl·
Always heed the safety warnings , when working
o n the vehicle ba tte ry o r the veh icle elect rical
system to p reve nt injury.
The following WARNINGS are very important
when working on the battery:
Always heed the following WARNING SYM·
BOLS and safety precautions when working on
the battery.
®
Always wear eye protection.
A
Battery acid contains sulfuric acid . Al-
ways wear gloves and eye protection.

@
No
• sp ark s
• fl ame s
· sm oki ng .
&
Wh en a battery is charg ed , it produces
h yd rogen ga s which i s ex plosi ve and
c o uld c au se p ers onal injury .
®
Always keep the b atter y well out of
rea ch of child ren.
A WARNING
Whenever working on the battery or on the
electrical system, there is the risk of injury,
accident and even fire. Read and heed the fol­
lowing WARN INGS:
- Always wear eye protection. Do not let bat­
tery a cid or any lead pa rticles get on your
sk in or cloth ing. Sh ield your eyes. Exp losive
gases can cause blindness or other injury .
- Battery acid contains su lf ur ic ac id. Sulfur ic
acid can cause blindness and severe b urns.
-Always wear gloves and eye protection. Do
not tilt the battery because acid could leak
out of the ventilat ion open ings.
- If you get battery ac id in your eyes or on
your skin, immediately rinse with co ld wa­
ter for seve ral minutes and get medical at·
tention .
- If you should ingest any battery acid, seek
medical attention immediately .
- Do not expose the battery to an open flame,
electric sparks or an open light.
- Do not smoke.
- Do not interchange the positive and nega -
tive cab les.
- When working on the battery, be sure not to
short-c ircuit the terminals with tools or oth­
er meta l objects. Th is wou ld cause the bat­
tery to heat up very quickly, which could
lead to damage or explosion and persona l
injury.
- When a battery is charged, it produces hy­
drogen gas which is explosive and could
cause pe rsonal injury.
- Always keep the battery well out of the
reac h of ch ildren .
-
Check ing and Filling
-Before work is done on the electrical sys­
tem, disconnect the negat ive ground cable.
- Before performing any work on the electri­
cal system, switch off the engine and igni­
tion as well as any electrical equ ipment. The
negat ive cable on the battery must be dis­
connected . If you are just going to replace a
light bulb, then it is enough to switch off
the lights.
- Before d isconnecting the battery, switch off
the anti-theft a larm system! Otherwise you
will set off the alarm.
- When disconnecting the battery, first dis­
connect the negat ive cable and then the
positive cable.
- Before reconnect ing the battery, make sure
all electrical consumers a re switched off.
Reconnect the positive cable first and then
the negative cable. Never in terchange the
cables -this could start a fire !
- Never cha rge a froze n or a thawed-out bat ­
t ery . It co uld explode! If a battery has fro­
zen, then it must be replaced. A discharged
battery can freeze over at 32 °F (0 °C).
- Make sure the vent hose is always attached to the opening on the side of the battery.
- Never use batteries which are damaged.
There is the danger of an exp losion! Always
replace a damaged battery .
A WARNING ,_____
California Proposition 65 Warning:
- Ba ttery posts, term inals and related acces ­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive prob lems.
Was h hands after handling.
(D Note
- Do not disconnect the vehicle battery when
the ignition is on or when the engine is run­ ning, otherwise, you w ill damage electronic
components in the electrical system.
- If your ve hicle is go ing to stand for a long
period of time w ithout being driven, protect
the battery from "freezing", otherwise it .,..
227

(D Note
Never use a fast charger as a booster to start
the engine . This will serious ly damage sensi­
tive electronic components, such as control units, relays, radio, etc., as well as the battery
charger.
Battery replacement
The new battery must have the same specifica­
tions and dimensions as the original equipment
battery .
Intelligent energy management in your vehicle is
responsible for distributing the electrical energy
throughout your vehicle
¢ page 192 . The intelli ­
gent energy management system w ill keep the
engine battery charged better than vehicles with­
out this system . To make sure the addit ional
e lectrica l energy is available once again after you
have changed the battery, we recommend that
you install batteries of the same type and manu­
facture only (the same as those installed at the
time your veh icle was delivered). Specifications
are listed on the battery housing. Your author­
ized dealer must code the battery in the energy
management system to enable you to use the en­
ergy management functions correctly after re­
p lacing the battery .
The new battery must have the same capacity,
voltage (12-volts), amperage, construction and
plug sealing .
When installing the battery, make sure the igni­
tion and all electrical consumers are sw itched
off.
(D Note
Make sure the ventilation hose on the side of
the battery is connected, otherw ise fumes or
battery acid can leak out.
- Vehicles with the Start-Stop-System* are
equipped with a special cycle-proof AGM
battery . Install ing a different type of bat­
tery can cause prob lems in the vehicle elec­
trical system. When replacing the vehicle
battery, always install one with the same
specifications as the original battery.
Checking and Filling
{® For the sake of the environment
Because of the problem of proper disposal of
a battery, we recommend your authorized
Audi dealer change the battery for you. Bat­
teries contain sulfur ic acid and lead and must
always be disposed of properly in compliance
with all environmental regulations. Disposing
of veh icle batteries improperly is very danger­
ous to the environment .
Windshield/head Light
washer container
Fig. 192 Eng in e compar tment: cover on the windshie ld
and head light * washer fluid reservoir
The washer fluid container is marked with the
symbol~ on its cap
¢fig. 192, c:;,page 218,
fig. 186 .
.. Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS c::;, A in Working in the engine compart­
ment on page 216.
.. Lift the filler cap tongue to add washer fluid .
You can fill the container to the top .
.. Press the cap back onto the filler neck after fill-
ing the container .
You can find the reservoir
capacity in the table in
¢page 271.
Clean water should be used when filling up. If
possible, use soft water to prevent scaling on
washer jets. Always add a glass cleaner solution
(with frost protection in the winter) . ..,.
229

Wheels
Wheels and Tires
General information
.,.Check your tires regularly for
damage (punctures, cuts, cracks
and bulges). Remove foreign ob­
jects from the tire tread.
.,. If driving over curbs or similar
obstacles, drive slowly and ap­
proach the curb at an angle.
.,.Have faulty tires or rims re­
placed immediately.
"'Protect your tires from oil,
grease and fuel.
.,.M ark tires before removing
them so that the same running
direction can be maintained if
they are reinstalled.
"'Lay tires flat when storing and
store them in a cool, dry location
with as little exposure to light as
possible.
(D Note
-Please note that summer and
winter tires are designed for
the conditions that are typical in those seasons. Audi recom­
mends using winter tires dur­
ing the winter months. Low
temperatures significantly de­ crease the elasticity of summ­
er tires, which affects traction
Wheels
and braking ability. If summer
tires are used in very cold
temperatures, cracks can form
on the tread bars, resulting in
permanent tire damage that
can cause loud driving noise
and unbalanced tires.
-Burnished, polished or
chromed rims must not be
used in winter driving condi­
tions. The surface of the rims
does not have sufficient corro­
sion protection for this and
could be permanently dam­ aged by road salt or similar
substances.
Tire designations
Fig. 193 T ir e designations on the side -
wall ,..
231

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_& WARNING
Temperature grades apply to tires that are properly inflated and not over or underinflat­
ed .
Tire pressure monitoring
system
CD General notes
Each t ire, including the spare (if provided),
should be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
veh icle manufac turer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inf lation pressure la­
be l, you should determine the proper tire infla­
tion pressure for those tires).
As an added safety feature, your veh icle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a low tire press ure te ll­
tale when one or more of your tires is significant­ l y under-inflated. Accordingly, when the low tire
pressure tellta le illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a s ignifi­
cantly under-inflated tire causes the tire to over­
heat and can lead to t ire failure. Unde r-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop­
ping ability .
Please note that the TPMS is not a substitute for
proper tire maintenance, and i t is the driver's re­
sponsib ility to ma inta in correct tire pressure,
even if under -inflation has not reached the level
to trigger illum inat ion of the TPMS low tire pres­
sure telltale.
Your veh icle has also bee n eq uipp ed w ith a TPMS
mal function indicator to indicate when the sys­
tem is not operating properly. The TPMS mal ­
function indicator is combined w ith the low tire
pressure tellta le. When the system detects a
malfunction, the telltale will flash for approxi­
mately one minute and then remain cont inuously
illuminated . This sequence will continue upon
Wheels
subsequent vehicle start-ups as long as the mal ­
function exists .
When the malfunction indicator is illuminated ,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
i nsta llation of replacement or alternate tires or
whee ls on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS ma lfunction telltale after replac ing one or
more tires or wheels on your vehicle to ensure
that the replacement or a lternate tires and
whee ls allow the TPMS to continue to function
properly.
If the Tire Pressure Monitoring System
indicator appears
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system mo/function .
Fig. 197 Instrume nt cluste r: indicator light with message
Us ing the ABS sensors, the tir e pressure monitor­
ing system compares the tire tread circumfer­
ence and vibration characteristics of the individu­
al tires. If the press ure changes in one or more
tires , this is indicated in the instrument cluster
display with an indicator light
ti] and a message.
If only one tire is affected, the location of that
tire will be indicated.
T he tire press ures must be stored in the Infotain­
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your vehicle¢
page 250. The tire pressure moni­
toring system only monitors the tire pressure you have stored. Refer to the tire pressure label for ..,.
249

Wheels
the recommended tire pressure for your vehicle
¢ page 241, fig. 196.
Tire tread circumference and vibration character­
istics can change and cause a tire pressure warn­
ing if:
- the tire pressure in one or more tires is too low.
- the tire has structural damage .
- the tire was replaced or the tire pressure was
changed and it was not stored¢
page 250.
-the spare tire* is installed.
Indicator lights
IE Loss of pressure in at least one tire¢&. .
Check the tires and replace or repair if necessary.
Check/correct the pressures of all four tires and
store the pressure again in the Infotainment sys­
tem ¢
page 250 .
mm (Tire Pressure Monitoring System) Tire
pressure: System malfunction!.
Ifmm appears
after switching the ignition on or while driving
and the
IE indicator light in the instrument clus­
ter blinks for approximately one minute and then
stays on , there is system malfunction . Try to
store the correct tire pressures¢
page 250. If
the indicator light does turn off or turns on again
after a short period of time, drive to your author­
ized Audi dealer or qualified repair facility imme­
diate ly to have the malfunction corrected.
A WARNING
- If the ti re pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu­
vers. Stop as soon as possible and check the
t ir es and their pressure .
- The driver is responsible for maintaining the
correct tire pressure. You must check the
t ir e pressure regularly.
- Under certain conditions (such as a sporty
dr iv ing style, winter cond itions or unpaved
roads), the tire pressure mon itoring system
indicator may be delayed.
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted can lead to
vehicle damage or accidents.
250
(D Tips
-The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function.
- Using snow chains may result in a system
malfunction.
- The tires with the identification "AO" or
"RO" ¢
page 2 38 have been matched with
your Audi tire pressure monitoring system.
We recommend that you use these tires.
Storing tire pressures
If the tire pressure changes or a tire is replaced,
it mus t be confirmed in the Infotainmen t sys­
tem.
... Make sure before storing that the tire pressures
of all four tires meet the specified values and
are adapted to the load ¢
page 241.
... Switch the ignition on .
... Select: the
I CARI function button > (Car)* Sys­
tems
contro l button > Servicing & checks >
Tire pressure monitoring > Store tire pressures
> Yes, store now.
(D Tips
Do not sto re the tire pressures if snow chains
a re installed.

Emergency assistance
2. Remove the decorative wheel cover*. For
mo re deta ils see also
c::> page 254, Decora­
tiv e wheel cov ers
or c::> page 2 54, Wheels
with wheel bolt caps.
3. Loosen the wheel bolts c::> page 255 .
4. Locate the proper mounting point for the
jack and align the jack below tha t poi nt
~ pag e 255 .
5. Raise the car w ith the ja ck¢ page 255 .
6. Remove t he wheel with the flat tire an d t hen
install
the spare ¢ page 257.
7. Tighten all wheel bo lts light ly .
8. Lower the veh icle with the jack .
9. Use the whee l bolt wrench and firmly tighten
a ll whee l bolts ¢
page 255 .
10. Replace the decorative wheel cover* .
11. Deactivate the vehicle jack mode * in the
M MI: !CARI function button> ( Car )* systems
control b utton > Servicing & checks > Air
susp.: jack mode > Off .
The vehicle jack mode * switches off automatical­
ly a t sp eed s above
6 mph (10 km/h) .
_&. WARNING
Always read and fo llow all WARNIN GS and in ­
f o rm atio n ¢
A in Raisi ng the vehicle on
p age 256
an d ¢page 258.
After changing a wheel
A wheel change is not complete without th e do­
ing the following.
• Always store the veh icle tool kit, the jack* and
the replaced t ire in the luggage compartment
¢ page 131.
• Che ck the tire pressure on the sp are whee l im­
med iate ly after mo unt ing it.
• As soon as possible, have t he
tightening tor­
ques
on all whee l bo lts checked with a torque
wrench . The correct tightening torque is
90 ft
lb
(120 N m).
• Have the flat tire
replaced as soon as possible.
(D Tips
- If you notice t hat the w hee l bolts are cor ­
r oded and diffic ult to t urn w hile cha nging a
254
tir e, they s hou ld be re pla ce d b efo re yo u
check the t ightening torque .
- Drive at red uce d spee d unt il yo u ha ve the
t ightenin g torques checked .
- Aft er ch angin g a whee l, the tire pres sure i n
all fou r tires must be che cke d/cor rec ted and
t h e tire pressure mo nito ring ind icator must
be stored in the
MM I ¢ page 25 0.
, Decorative wheel covers
Applies to vehicles: with decorative w heel covers
The decorative wheel co vers must be removed
first to access the wheel bolts .
Fig. 202 Cha ng ing a w heel : Re mov ing t he w heel cover
Removing
• Insert the hook (p rovided w ith the vehicle tool
kit) i n the hole in the wheel hub cover.
• Pull off th e
decorative wheel cover ¢ fig. 202 .
Wheels with wheel bolt caps
Applies to vehicles: wit h wheel bolts with caps
The caps must be removed first from the wheel
bolts before the bolts can b e unscrewed .
Fig. 203 Cha ngi ng a w hee l: re m ovin g the w heel bo lt ca ps ..,