service AUDI A6 2016 Service Manual

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. ..,.

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.

Wheels
-Have an authorized Audi dealer or authorized repair facility
check the wheel alignment if
there is unusual wear .
-Have the wheels rebalanced if an
imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear more quickly.
Treadwear indicator
The original tires on your vehicle
have 1/16 inch (1.6 mm) high
"wear indicators"¢
fig. 194 run­
ning across the tread. Marks on
the tire sidewall (for example
"TWI" or other symbols) indicate
the positions of the tread wear in­
dicators.
The tires have reached the mini­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones ¢Ai..
Wheel rotation
Rotating the wheels regularly is
recommended to ensure the tires
wear evenly . To rotate wheels, in­
stall the wheels from the rear
1> Obey any applicable regulations in your
country.
240
axle on the front axle and vice
versa. This will allow the tires to
have approximately the same
length of service life.
For unidirectional tires, make
sure the tires are installed accord­
ing to the running direction indi­
cated on the tire sidewall
¢page 258.
Hidden damage
Damage to tires and rims can of­
ten occur in locations that are
hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage .
Reduce your speed immediately .
Check the tires for damage. If no
damage is visible from the out­
side, drive slowly and carefully to
the nearest authorized Audi deal­
er or authorized repair facility to
have the vehicle inspected.
A WARNING ~
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
This can especially have a nega­
tive effect on handling, on the
risk aquaplaning when driving .,.

Wheels
- These tires may wear more q uickly than othe rs.
- Please also remembe r th at, w hile these tires
deliver responsive handling, they may r ide less
comfortably and make more noise than ot her
cho ices.
Reduced performance in wint er/ cold season
condit ion s
All tires are designed for certain purposes. The low aspect ratio, ultra high pe rformance tires
or iginally insta lled on yo ur vehicle are intended
for maximum d ry and wet road performance and
handling. They are not suitable for cold, snowy or
icy weathe r cond itions .
If you drive under those
circumstances, you should equ ip your ve hicle
with all-season or winter tires, wh ich offe r bette r
traction under those condit ions. We sugges t you
use the recommended snow or all-season tires
specified for yo ur vehicle, or their eq uivalen t.
Refer to¢
page 246 for more deta iled info rma·
tion reg arding w in ter ti res.
Uniform tire quality grading
- Tread we ar
- Tra ction AA A B C
- Temperature ABC
Qua lity grades can be found where app licab le on
the t ire side wall betwee n tread s hou lder and
maximum sect io n w idth ¢
page 231, fig . 193.
For e xample: Tread wear 200 , T raction AA, Tern·
pe rature A.
All passenger car tires must conform to Federa l
Safety Requirements in addition to these grades .
Tread wear
T he
tread wear grade is a compara tive ra ting
b a se d on the wea r rate of the t ire when tes ted
under contro lled conditions on a specified gov ·
ernment test co urse.
F or examp le, a tir e graded 150 would wear one
a nd one ha lf ( 11/2) times as well on t he gove rn·
men t course as a tire graded 100 .
T he rela tive perfo rmance of t ires depends upon
the a ct u a l c ondi tions of their use, howeve r, and
may depart s ignific ant ly from the norm d ue to
248
variations in driving habits, service p ract ices an d
differences in road characteristics and climate.
Traction
The
traction grades , from hig hest to lowest , a re
AA , A, B and
C. Those grades rep resent the tire's
a bility to stop o n wet p avement as measure d un­
der controlled conditions on specified govern ·
ment test s urfaces of asphalt an d concrete. A tire
marked C may have poor traction perfo rmance
¢ ,& .
Temperature
The
temp eratur e grades are A ( the highest), B,
and C, representing the tire 's resistance to the
generatio n of heat and its ability to dissipate
heat when tested under contro lled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate·
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to s udden
tire failure¢ ,&.
The grade C cor responds to a level of perform ·
ance which all passenger car tires must meet un·
der the Federal Motor Vehicle Safety Standard
No . 109 . Grades Band A represent hig her levels
of performance on the laboratory test wheel than
t h e m inim um requ ired by law .
A WARNING
-
The tract io n grade assigned to this t ire is
based on st raig ht-a head braking tr action
tes ts, and do es not in clude acceler ation, cor·
n erin g, hy droplaning or pe ak traction ch arac­
teristics.
A WARNING
T he tem pera ture grade fo r thi s tire is esta b·
lishe d for a tire that is properly inflated and
not ove rloaded . Excessive speed, underinfla ·
tion, o r excessive load ing, either separately or
in comb inat ion, can cause heat bu ildup and
-
possible tire failure . ..,

Emergency assistance
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in the
right direction .
Using a spare tire with a tread pattern
intended for use in a specific direction
When using a spare ti re with a tread pa tte rn in­
tended fo r use in a spec ific d irection, p lease note
the following:
- The direct io n of rotat io n is marked by an arrow
o n the side of the tire.
- If the spare tire has to be installed in the incor­
rect d irection, use the spare tire only tempora ­
rily s ince the tire w ill not be ab le to achieve its
opt imum pe rformance cha racter istics with re­
gard to aq uaplaning, noise and we ar.
- We recommend that you pay particular atten­
t ion to this fac t during wet weathe r and t hat
yo u ad just yo ur speed to m atch road condi­
t ions.
- R eplace t he flat t ire wi th a new one a nd have it
i nsta lled on yo ur vehicle as soon as pos sible to
res to re t he handling advantages of a unidirec ­
tiona l tire .
Notes on wheel changing
Please read the information q page 238, New
tires or wheels
if you are going to use a spare tire
which is different from the tires on your vehicle.
After you change a tire:
- Check the tire pressure on the spare immedi­
ately after installation .
- Have the wheel bolt tightening torque
che cked with a torque wrench as s oon as pos­
sible by your authorized Audi dealer or a
qualified service station.
- With steel and alloy wheel rims , the wheel
bolts are correctly tightened at a torque of 90
ft lb
(120 Nm) .
- If you notice that the wheel bolt s are corroded
and difficult to turn while changing a tire ,
they should be replaced before you check the
tightening torque.
258
- Replace the flat tire with a new one and have
it installed on your vehicle as soon as possi­
ble. Remount the wheel cover.
Until then , drive with extra care and at reduced
speeds.
_& WARNING
- If you are going to equip yo ur vehicle with
tires or r ims which differ from those which
were facto ry installed, then be sure to read
the information
q page 238, New tires or
wheels.
- Always make sure the damaged wheel or
eve n a flat tire and the jack and tool kit are
properly secured in the l uggage compart­
men t and a re not loose in the passenger
compa rtme nt.
- In an accident or sudde n maneuver they
could fly forward, i njuring anyone i n the ve­
hicle .
- Always s to re damaged wheel, jack and tools
secure ly in the luggage comp artment . Oth­
e rwi se, in an a cci den t or sudden m aneuve r
t hey could
fly forwar d, causing injury to pas ­
sen gers in the veh icle.
-

.... N
0 CJ ' M I.Cl ......
Fuses
Replacing fuses
A fuse that has blown will have metal strips that have burned through.
F ig . 2 10 Drive r's side o f the cockpit : cove r
The fuses a re located on front left and r ight of
the cockpit and beh in d the tri m on the right side
of the luggage compartmen t.
.,. Switch the ign ition and all electr ica l equipment
off .
.,. Check the following table to see which fuse be­
longs to the equipment .
.,. Remove the approp ria te cove r.
.,. Remove the colore d plastic clip from the fuse
panel, if necessary ~
page 260, fig. 211. You
can dispose of the p lastic clip .
.,. Remove the clamp from the rear side of the
cover
C? fig . 210 .
.,. Remove the fuse us ing the clamp .
.,. Replace the b lown f use only with an identical
new one .
.,. Install the cover.
Fuse color identification
Color Current rating
in amps
Black 1
Purp le 3
Li ght b rown 5
Brown 7 .5
Red 10
Blue 15
Yellow 20
White o r transparent 25
Fuses
Color Current rating
in amps
green 30
orange 4 0
,&_ WARNING
= -D o not repair fuses and never rep lace a blown
fuse wit h one that has a higher amp rating.
This can cause damage to the e lectr ica l sys­
tem and a fire.
(D Note
If a new fuse burns out again shortly after you have insta lled it, have the electrical system
checked as soon as poss ib le by an authorized
Audi dealer or authorized Audi Service Fac ili­
ty .
Ci) Tips
-The following table does not list fuse loca­
tions that are not used .
- Some of the equipment listed in the fo llow­
ing tables applies on ly to certain model ver­
sions or certa in optional equipment.
259

.... N
0 CJ ' M I.Cl ......
When jump starting or charging the battery,
never connect the negative ground cable to
the battery negative post because the battery
manager system must be able to detect the
battery's state of charge . Always connect the
negative ground cable to the negat ive ground
post of the battery manager control unit .
Use of jumper cables
Make sure to connect the jumper cable clamps in
exactly the order described below!
Fig. 214 Engine compa rtment: connec tor s for ju mp start
cables and cha rger
@
Fig. 215 Jump start ing with the battery of another vehicle:
@ -booste r battery ,@ -discharged vehicle battery
The procedure described below for connecting
jumper cables is intended to provide a jump start
for your vehicle.
Vehicle with discharged battery:
.. Turn off lights and accessories, move lever of
automatic transmission to N (Neutral) or P
(Park) and set parking brake .
Connect POSITIVE(+) to POSITIVE(+) (red)
.,. Open the red cover on the positive terminal
~fig. 214 .
Emergency situations
1. Connect one end of the red positive cab le on
the
jump start bolt~ fig. 215 (D (bolt under
the red cover = "posit ive") of the veh icle to be
started @.
2. Connect the other end to the posit ive termi-
nal @of the booster battery @.
Connect NEGATIVE (-) to NEGATIVE (- )
(black)
3. Connect one end of the black negative cable
to the negative terminal @ of the booster
battery @.
4 . Connect the other end to the
jump start pin
@ (bolts with hex head bolt= "negat ive") of
the vehicle to be started @.
Starting the engine
.. Start the engine of the vehicle with the booster
battery @. Run the eng ine at a moderate
speed .
.,. Start engine w ith discharged vehicle battery @
in the usual manner.
.,. If the engine fails to start, do not keep the
starter cranking for longer than 10 seconds.
Wait for about 30 seconds and then try again .
.. With engine running, remove jumper cables
from both vehicles in the exact
reverse order .
.. Close the red cover on the positive terminal.
The battery is vented to the outside to prevent gases from entering the vehicle interior . Make
sure that the jumper clamps are well connected
with their metal parts in full contact with the
battery term inals .
A WARNING
To avoid ser ious personal injury and damage
to the vehicle, heed all warnings and instruc­
tions of the jumper cable manufacturer.
If in
doubt, call for road service.
- Jumpe r cables must be long enough so that
the vehicles do not touch .
- When connecting jumper cables, make su re
that they cannot get caug ht in any moving
parts in the engine compartment.
- Before you check anything in the engine
compa rtment, always read and heed all
WARNINGS
~page 216.
265

Tech nical data
Gasoline engines
A6 2.0, 4 cylinder
Maximum output SAE net hp@ rpm 252 @ 4900 -5900
Max imum torq ue SAE net lb-ft@ rpm 273
@ 1600 - 4700
Displacement CID (cm
3
) 121 (1984)
Engine oil with filter change
1>
Fuel Pr emium unl ead ed (9 1 A KI), c:;, page 208, Gasoline
A6 3.0, 6 cylinder
Maximum output SAE net hp@ rpm
333 @ 5300 -6500
Maximum torque SAE net lb
-ft@ rpm 325@ 2900 - 4500
Displacement CID (cm
3
) 182 (2995)
Engine oil with fi lter change
1
)
Fuel Premium un leaded (91 AKI) , c:::;, page 208, Gasoline
56 4.0, 8 cylinder
Maximum output SAE net hp@rpm 450 @ 5800 -6400
Maximum torque SAE net lb
-ft@ rpm 406@ 1400 - 5700
Displacement CID (cm3
)
243 .7 (3993)
Engine oil with fi lter change1
)
Fuel Premium unleaded (91 AKI) , c:::;, page 208, Gasoline
Diesel engines
A6 3.0 TOI, 6 cylinder
Maximum ou tput SA E ne t hp@ rpm
Maximum torque SAE net lb-ft@ rpm
Displacement C
ID (cm
3
)
Engine oil with filter change1l
Fuel
ULSD No . 2, c:;, page 209, Diesel fuel
l ) For specific engine oil capac ities, please see
t he mos t cur rent informa tion fo r the USA at
http :/ /www .aud iusa .com/he lp/ma intenance o r
for Canada at http://www.audi .ca/ca/brand/ en/
your _aud i/ aud i_ services _a nd/Ca re _and _M a i nte­
na nce/ schedule.htm l or call 800 -822-2834.
272
239@ 3500 -3750
428@ 1750 -2250
18 1 (296 7)

Consumer information
Warranty coverages
Y our Audi is co vered b y the foll owing war ran­
tie s:
- New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfora-
tion
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Control Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regard ing your warranties
can be found in yo ur
W arranty & M ainten ance
bookl et.
Operating your vehicle
outside the U.S.A. or
Canada
Government reg ulations in the Un ited States and
Canada require that automobiles meet specific
emission regulations and safety standards.
Therefore, vehicles built for the U .S.A. and Cana­
da differ from vehicles sold in other countries.
I f you p lan to take your vehicle outside the conti­
nenta l limits of the United States or Canada,
there is the poss ibility that:
- u nleaded fue ls for vehicles with cata lytic con­
verter may not be available;
- fuel may have a considerably lower octane rat­
i ng . Imprope r fuel may ca use engine damage;
- service may be inadequate due to lack of p roper
service facilities, tools or testing eq uipment;
- r eplacement parts may not be readily ava ilable.
- Navigation systems for veh icles built for the
U .S .A . and Canada will not necessa rily work in
E urope, and may not wo rk in other countries
outside No rth Ame rica.
Con sumer inf ormation
(D Note
Audi cannot be respons ible for mechanical
damage that could resu lt from inadequate
fuel, service or parts ava ilability.
Audi Service Repair
Manuals and Literature
Audi Official Factory Service Manuals and L itera ­
ture are published as soon as poss ible after mod­
el introduction. Service ma nuals and literature
are avai lab le to order from the Audi Tec hni cal Lit ­
erature Ordering Center at :
www.audi .t e chlit eratur e.com
Maintenance
General
Your vehicle has been designed to he lp keep
maintenance requirements to a min imum. How­
ever, a certain amount of regular maintenance is
still necessary to assure your veh icle's safety,
economy and reliab ility . For detailed vehicle
maintenance consult your Wa rranty
& Mainte­
nance book let .
Und er diff icult op erating condition s, for exam­
ple at extremely low outside temperatures, in
very dusty regions, when towing a trai le r very fre­
quently, etc., some service work shou ld be per­
fo rmed between the in terv als specified. This ap ­
plies particularly to:
- oil changes , and
- cleaning or replacing the a ir filter .
(® For the sake of the environment
By regularly maintain ing your vehicle, you
help make sure that emiss ion standards are
maintai ned, thus min imizing adverse effects
on the environment .
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated
fuel injection and emission control systems, and
the generally increas ing technica l complexity of ..,_
273

@ For the sake of the environment
-Changing the engine settings will adversely
affect emission levels. This is detrimental to
the environment and increases fuel con­
sumption.
- Always observe environmental regulations
when disposing of old engine oil, used brake
fluid, dirty engine coolant, spent batteries
or worn out tires .
- Undeployed airbag modules and pretension­
ers might be classified as Perchlorate Mate­
rial -special handling may apply, see
www .dtsc.ca.gov/hazardouswaste/perchlo­
rate . When the vehicle or parts of the re­
straint system including airbag modules
safety belts with pretensioners are scrap­
ped, all applicable laws and regulations
must be observed. Your authorized Audi
dealer is familiar with these requirements
and we recommend that you have your deal­ er perform this service for you.
Accessories and
technical changes
Additional accessories and parts replacement
Always consult an authori zed Audi dealer before
purchasing accessories.
Your vehicle incorporates the latest safety design
features ensuring a high standard of active and passive safety.
Th is safety could be compromised by non-ap­
proved changes to the vehicle. For this reason, if
parts have to be replaced, please observe the fol­
lowing points when installing additional accesso­
ries :
Approved Audi accessories and genuine Audi parts are available from authorized Audi dealers.
These dealers also have the necessary facilities, tools and trained specialists to install the parts
,...., and accessories properly .
N
0 <.J 'SI: ,...., M Consumer information
A WARNING
Using the wrong spare parts or using non-ap­
proved accessories can cause damage to the
vehicle and serious personal injury.
- Use only accessories expressly approved by
Audi and genuine Audi spare parts
- These parts and accessories have been spe­
cially designed to be used on your vehicle.
- Never install accessories such as telephone
cradles or beverage holders on airbag covers
or within the airbag deployment zones . Do ­
ing so will increase the risk of injury if air­
bags are triggered in an accident!
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS 9page 216.
(D Note
-If items other than genuine Audi spare
parts, add-on equipment and accessory
items are used or if repair work is not per­
formed according to specified methods, this
can result in severe damage to your vehi­
cle's engine and body (such as corrosion)
and adversely affect your vehicle's warranty.
- If emergency repairs must be performed
elsewhere, have the vehicle examined by an
authorized Audi dealer as soon as possible.
- The manufacturer cannot be held liable for
damage which occurs due to failure to com­
ply with these stipulations.
Technical Modifications
Our guid elines must be complied with when t ech­
nical modifications are made.
Always consult an authorized Audi dealer
before
starting work on any modifications.
This will help ensure that vehicle function, per­
formance and safety are not impaired
9 ,& .
Attempting to work on electronic components
and the software used with them can cause mal­
functions. Because of the way electronic compo­
nents are interconnected with each other, such
malfunctions can also have an adverse affect on
other systems that are not directly involved. This .,._
275