wheel AUDI A6 2017 Workshop Manual

Airbag system
-If, in exceptional circumstances, you must
install a forward-facing child restraint on
the front passenger seat, always move the
seat into its rearmost position in the seat 's
fore and aft adjustment range , as far away
from the airbag as possible . The backrest
must be adjusted to an upright position.
- Make sure that the
PASSENGER AIR BAG
OFF
light comes on and stays on all the time
whenever the ignition is switched on.
_& WARNING
-If the PASSENGER AIR BAG OFF light does
not go out when an adult is sitting on the
front passenger seat after taking the steps
described above, make sure the adult is
properly seated and restrained at one of the
rear seating positions .
- Have the airbag system inspected by your
Audi dealer before transporting anyone on
the front passenger seat .
@ Tips
If the capacitive passenger detection system
determines that the front passenger seat is
empty, the frontal airbag on the passenger
side will be turned
off, and the PASSENGER
AIR BAG OFF
light will stay on.
Repair , care and disposal of the airbags
Parts of the airbag system are installed at many
different places on your Audi. Installing , remov­
ing, servicing or repairing a part in an area of the
vehicle can damage a part of an airbag system
and prevent that system from working properly
in a collision .
There are some important things you have to
know to make sure that the effectiveness of the
system will not be impaired and that discarded
components do not cause injury or pollute the
environment.
A WARNING
Improper care, servicing and repair proce­
dures can increase the risk of personal injury
and death by preventing an airbag from de-
162
ploying when needed or deploying an airbag
unexpectedly :
- Never cover, obstruct, or change the steer­
ing wheel horn pad or airbag cover or the in­
strument panel or modify them in any way .
- Never attach any objects such as cup holders
or telephone mountings to the surfaces cov­
ering the airbag units .
- For cleaning the horn pad or instrument
panel, use only a soft, dry cloth or one mois­
tened with plain water. Solvents or cleaners could damage the airbag cover or change
the stiffness or strength of the material so
that the airbag cannot deploy and protect properly.
- Never repair , adjust, or change any parts of
the airbag system.
-All work on the steering wheel, instrument
panel, front seats or electrical system (in­
cluding the installation of audio equipment,
cellular telephones and CB radios, etc.) must be performed by a qualified technician
who has the training and special equipment
necessary.
- For any work on the airbag system, we
strongly recommend that you see your au­
thorized Audi dealer or qualified workshop.
- Never modify the front bumper or parts of the vehicle body.
- Always make sure that the side airbag can inflate without interference:
- Never install seat covers or replacement
upholstery over the front seatbacks that
have not been specifically approved by
Audi .
- Never use additional seat cushions that
cover the areas where the side airbags in­
flate.
- Damage to the original seat covers or to
the seam in the area of the side airbag
module must always be repaired immedi­
ately by an authorized Audi dealer .
- The airbag system can deploy only once. Af­
ter an airbag has been deployed, it must be
replaced with new replacement parts de­
signed and approved especially for your
Audi model version. Replacement of com­
plete airbag systems or airbag components

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Although they are not a soft pillow, they can
"cushion" the impact and in this way they can
help to reduce the risk of injury to the lower ex­
tremities .
All of this takes place in the blink of an eye, so
fast that many people don't even realize that the
airbags have deployed . The airbags also inflate
wi th a great deal of force and it is important for
occupant safety that nothing should be in their
way when they deploy .
Fully inflated airbags in comb ination with proper­
ly worn safety belts slow down and limit the o c­
cupant 's forward movement and help to reduce
the r isk of injury .
Important safety instructions on the knee
airbag system
Applies to: veh icles wit h knee airbags
Airbags are only supplemental restraints . Always
wear safety belts correctly and ride in a proper
seating position.
There is a lot that you and your passengers must
know and do to help the safety belts and airbags
to p rovide supplemental protection .
& WARNING
An inflating knee airbag can cause ser ious in­
jury. Wearing safety bel ts incorrec tly and im­
proper sea ting positions increase the r isk o f
serious personal injury and death whenever a
vehicle is being used.
- The knee airbag system cannot protect you
properly if you are seated too close to any of
the airbag locat ions. When ad justing their
seat positions, it is important that both the
driver and the front passenger keep their
upper bod ies a nd knees at the following
min imum safe distances :
- at least 10 inches (25 cm) between the
chest and the steering wheel/instrument
panel.
- at least 4 inc hes (10 cm) between the
knees and the lower part of the instru­
ment panel.
- The risk of persona l injury inc reases if you
lean forward or to the side, or if the seat is
-
Airb ag sys tem
improperly positioned and you are not wear­
ing your safety belt. The risk increases even
more should the airbag deploy.
- Always make sure that the knee a irbag can
inflate w ithout interference . Objects be­
tween you and the airbag can increase the risk of injury in an acc ident by interfering
with the way the airbag deploys or by being
pushed into yo u as the a irbag deploys.
- Never let anybody, especia lly children or
anima ls ride in the footwell in front of the
passenger seat. If the airbag deploys, this
can result in serious or fatal inj uries.
- Never carry objects of any kind in the foot­
well area in front of the driver's or pas­
senger's seat. Bulky objects (shopp ing
bags, fo r example) can interfere with or
prevent proper dep loyment of the airbag .
Small objects ca n be thrown th rough the
vehicle if the airbag deploys and injure you
o r your passengers .
- M ake sure the re are no c rac ks, deep scratch­
es or othe r damage in the area of the inst ru­
men t panel where the knee airbags are lo­
cated.
- If children are incorrec tly se ated, their risk
of injury inc reases in a coll is io n
~ page 171, Child safety.
Side airbags
Description of side airbags
The airbag system can provide supplemental
pro tec tion to properly restrained occupan ts .
Fig . 1 59 Side a irbag locatio n in t he drive r's seat
165

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-Ad Blue is req uired by law to operate this ve ­
hicle .
Messages in the instrument cluster display
Appl ies to: ve hicles with selective ca talytic reduc tion
The display indicates if the Ad Blue level is low or
if there is a system malfunction.
AdBlue level low
You wi ll be informed if the Ad Blue in t he tank
dr ops below a certain leve l.
Please r efill Ad B lu e. Rang e x mi (km )
This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
driver information system . Fill the AdBlue.
Ad Blue /9 Refill AdBlue! Cannot start engine
in x mi (x km )! See owner 's m anual
This message appea rs when there is only eno ugh
Ad Blue left to d rive the distance indicated in the
driver information system. Fill the AdBlue. Other­
wise the engine will not start again if you stop it
once the distance ind icated has been driven. You
can also check the remaining distance in the on­
board computer*.
Refill AdBlue! No restart! See o wn·
er 's manual
This message appears when the AdBlue tank is
empty. Fill the Ad B lue . Otherwise you will not be
ab le to start the engine again once you stop it.
The AdB lue m ust be refilled when the amount in
the tank has reached the minimum level
¢ page 195, Filling Ad Blue .
Incorrect filling/system malfunction
A message appears if the Ad Blue tank was filled
with a fluid other than AdBl ue and the sys tem
h as detec ted t hat the tank was f illed incorrect ly,
or if there is a system malfunction .
Ad Blue/ AdBlue : system fault . No restart in
x mi (x km ) See owner 's manu al
This message appears when it is only poss ible to
drive the d ista nce ind icated in the dr iver informa­
tion system. Drive to t he nearest autho rized Aud i
dealer or authorized Aud i Serv ice Facility to have
Checking and Filling
the mal func tion corrected. Otherw ise the engine
will not sta rt again if you stop it once the dis­
tance indicated has been driven .
Ad Blue: Syst em fault No re start!
See owne r's ma nual
T his message appears if the system has detected
that the tan k was fi lled incorrect ly or tha t there
is a ma lf u nction. Drive immed iate ly to the nea r­
est authorized A udi dealer or authorized Audi
Service Facility to have the malfunction correct ­
ed. Otherwise you will not be able to start the en ­
gine again once you stop it .
Filling AdBlue
Applies to : vehicles wi th selective cat alyt ic re du ctio n
Fi g. 17 8 Right rear side of the vehicle: removing t he AdBl ­
ue cap
The Ad Blue tank open ing is located near the d ie­
se l tank opening . Add at least 1.5 gallons (5 . 7
li te rs) of Ad Blue. This is the m inimum amo unt re­
quired to ensure the system detects the refilling
and to start the eng ine. You can add a max imum
of4.5 gallons ( 17 liters).
Requirement: the request to add Ad Blue mus t
appea r in the ins trument clus ter display.
.,. Switch the ignit ion off .
.,. Open the tank filler door ¢
page 192.
.,. Tur n the cap on the f iller ne ck coun ter-clock­
w ise using the wheel wre nch from the vehi cle
too l kit to remove it¢
fig . 178.
.,.. Fill the AdBlue using a bottle ¢ page 196 or a
canister
¢page 196. ..,.
195

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tank .
.,. Remove the canister and close the fi ller tube
c:> page 197 , Comple ting AdBlue refill .
CD Note
Only use refi ll canisters that are approved for
your vehicle. Us ing other systems can cause
Ad Blue to leak.
(D Tips
- An authorized Audi dealer or authorized
Audi repair facility can tell you which ref ill
canisters are approved for your vehicle.
- A permitted refill canister conta ins approxi­
mately 1.3 gallons (5 liters) of AdBlue.
Completing AdBlue refill
Applies to: vehicles with selective catalytic reduction
Clo sing the filler nec k
.,. Tu rn the cap on the filler neck to the right with
the wheel wrench until the cap clicks into place.
This t ightens the cap to the specification c::> .&.
in Filling AdBlue on page 196, c:> 0 in Filling
AdBlue on page 196.
.,. The n press on the left side of the tank doo r un-
t il it latches .
After filling
The vehicle must be dr iven so that the system
recognizes that the Ad Bl ue was refilled . Th is can
take severa l m inutes.
.,. If there was no Ad Blue left in the tank and a
range of O mi (0 km) was shown in the display,
switch the ign ition on for about 30 seconds be­
fore starting the engine.
(D Tips
Ad Blue can freeze at very low temperatures.
If th is happens , the system will not detect
that the Ad Blue was refilled and it will contin­
ue to inform yo u of the low Ad B lue level. The
message turns off as soon as the tank thaws
out again .
Ch eck ing and Filling
Catalytic converter
Applies to: vehicles with gasoline engine
It is very important that your emission control
system (cataly tic converter) is functioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner.
.,. Always use lead-free gasoline c:> page 190 , Fuel
supply.
.,. Never run the tank down all the way to empty .
.,. Never put too much motor o il in your engine
c:> page 203, Adding engine oil.
.,. Never try to push- or tow-start your vehicle.
The catalytic co nverter is an efficient "clean -up"
device built into the exhaust system of the ve hi­
cle. The catalyt ic converter b urns many of the
po llutants in the exhaust gas before they are re­
leased into the atmosphere.
The exclusive use of un leaded fuel is cr itically im­
portant for the life of the catalytic converte r and
prope r funct ion ing of the eng ine .
_&. WARNING
The tempera ture of t he exhaus t sys tem is
h igh, bot h when driv ing and a fter stopping
the engine .
- Never tou ch the exhaust tail pipes once they
have become hot. This cou ld resu lt in burns.
- Do not park or operate the vehicle in ar eas
where the hot exhaus t sys tem may come in
contact with dry grass, b rush, fuel spill or
other material which can ca use a fire.
- Do not app ly additiona l undercoating or
r u stp roofing on or near the exhaust mani­
fold, exha ust pipes, cata lytic converter or
heat shields . D uring driving, the substance
used for undercoat ing could overheat and
cause a fire.
CD Note
- Be aware that just one tank fi lling with
leaded fuel w ill already seriously degrade
the performance of the catalytic converter .
- Do not exceed the correct engine oil leve l
c:> page 203.
197

Wheels
Wheels
Wheels and Ti res
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.
.,.Mark 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 N ote
-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
2 10
and b raking 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
F ig. 188 Tire des ignat ions on the side-
wall II>

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(if applicable)
P indicat es a tir e for a p asse ng er
vehi cle. T indi cates a tire de sig­
nated for tempor ary us e.
@ Nominal width
Nominal width of the tire be­
tween the sidew alls in millime­
ters. In general: the larger the number, the wider the tire.
@ Aspect ratio
Height /width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Siz e of the rim diameter in inches.
@ Load index and speed rating
The load ind ex indi cates the tire' s
lo ad-ca rry in g ca pacity.
The speed rating indicates the maximum permitted speed¢.&
in
W inter tires o n page 225 .
"EXTRA LOAD", "xl" or "RF" indi­
cate s that the tire i s reinfor ced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
up t o 93 mph ( 150 km/h)
Q up to 99 mph (160 km/ h)
Wheels
Speed rat- Maximum permitted speed
ing
R up to 106 mph (170 km/h)
s u p to 11 0 mph ( 180 km/h)
T up to 118 mph (190 km/h)
u u p to 124 mph ( 200 km/h)
H up to 130 mph (210 km/h)
V up to 14 9 mph (2 40 km/h) al
z above 149 mph (240 km/h)al
w up to 168 mph (270 km/h)al
y up to 1 86 mph (300 km/h)al
a) For tir es ab ove 149 mph (2 40 km/h),
t ir e man ufact ure rs sometimes use the
co de "Z R".
(j) US DOT number (TIN) and
manufacture date
The m anufac ture date i s listed on
the tire sidewall (it ma y only ap­
pear on the inner side of the tire):
DOT ... 2216 ...
means, for example , that the tire
was produced in the 22nd week of
the year 2016.
@ Audi Original Tires
Audi Original equipment tire s
with the de signation "AO" ha ve
been specially matched to your
Audi. When used correctl y, these
tires meet the high est standards
for safety and handling. An au­
thorized Audi dealer o r author­
ized Audi Ser vice Fa cilit y will be
a ble to pr ovide you with more in-
formation . ""
211

Wheel s
® Mud and snow capability
"M/5" or "M+S" indicates the tire
is sui table for driving on mud and
snow.
& indicates a winter tire.
@ Composition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the t ire. In general: the
more layers, the more weight a
tire can carry . Tire manufacturers
must also specify the materials
used in the tire. These include
steel, nylon, po lyester and other
materials.
@ Maximum permitted load
This number indicates the maxi­
mum load in kilograms and
pounds that the tire can carry .
@Uniform tire quality grade
standards for treadwear,
traction and temperature resist ance
Tread wear, traction and temper ­
ature ranges¢
page 227.
@ Running direction
The arrows indicate the running
direction of unidirectional t ires .
You must always follow the speci­
fied running direction
¢page 241 .
212
@ Ma ximum permitted
inflation pressure
This number indicates the maxi­
mum pressure to which a tire can
be inflated under normal operat ­
ing condit ions.
Glossary of tire and loading
terminology
Acces sory we ight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer­
ing, power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as factory-in­
stalled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the height to
the width of the tire in percent .
Numbers of 55 or lower indicate a
low sidewall for improved steer­
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the r im . ...

Bead separa tion
means a breakdown of the bond
between components in the bead.
Cord
means the strands forming the
plies in the tire .
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated size that has not been driven for
more than a couple of miles (kilo­
meters) at low speeds in the
three hour period before the tire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capac ity of
fuel, oi l, and coolant, a ir condi­
tioning and add itional weight of
optional equipment.
E xtra load tire
means a tire designed to operate
at higher loads and at h igher in ­
flation pressures than the corre­ sponding standard tire. Extra load
tires may be identified as "XL",
~ "xl", "E XTRA LOAD" , or "RF" on .....
~ the sidewal l. ..... 0
s ..
Wheels
Gross Axle Weight Rating
(" GAWR")
means the load-carrying capacity
of a single axle system, measured
at the tire -ground interfaces.
Gross Vehicle Weight Rating
(" GVWR ")
means the max imum total loaded
weight of the vehicle.
Groove
means the space between two ad­
jacent tread ribs .
Load rating (code)
means the maxim um load that a
tire is rated to carry for a given in­
flat ion pressure . You may not f ind
this informat ion on all tires be ­
cause it is not required by law.
Maximum load rating
means the load rating for a tire at
the maximum permissible infla­
tion pressure for that tire .
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity we ight , and
(d) Production options we ight
2 13

Wheel s
Maximum (permissible)
inflation pressure
means the max imum cold infla­
tion pressure to which a t ire may
be inflated . Also called "maxi ­
mum inflation pressure."
Normal occupant weight
means 150 lbs. (68 k ilograms)
times the number of occupants seated in the vehicle up to the to­
tal seating capacity of your vehi­
cle .
Occupant distribution
means distribution of occupants
in a vehicle.
Outer d iameter
means the overall diamete r of an
inflated new tire.
Overall width
means the linear distance be­
tween the exteriors of the side ­
walls of an inflated tire , including
elevations due to labeling, deco­ rations, or protective bands or
ribs .
Ply
means a layer of rubber-coated
para llel cords.
2 14
Production options we ight
means the combined weight of
those installed regular product ion
options weighing over 5 lbs . (2 .3
kg) in excess of those standard
items which they replace, not pre­
viously considered in curb weight or accessory weight , including
heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and
special trim.
Radial ply ti re
means a pneumatic tire in which
the ply cords that extend to the beads are la id at substantially 90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see ¢ page 213 , Cold tire infla­
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­
sponding standard tire . Rein ­
forced tires may be identified as "XL", "xl", "EXTRA LOAD", or "RF"
on the sidewall. ...

a,
a,
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Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim di amet er
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur­
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be­
tween the tread and bead.
Speed rating (letter code )
means the speed at wh ich a tire is
designed to be driven for extend­
ed periods of time . The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 211.
You may not find
this information on all tires be­
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the
Wheels
maximum permissible road
speeds
¢ A in Winter tires on
page 225.
T ire pressure mon itoring
system *
means a system that detects
when one or more of a vehicle's
tires are underinflated and illumi­
nates a low tire pressure warning
telltale.
T read
means that portion of a tire that
comes into contact with the road .
Tread separation
means pulling away of the tread
from the tire carcass.
Treadwear indicators (TWI )
means the projections within the
principal grooves designed to give
a visual indication of the degrees
of wear of the tread. See
¢ page 219, Treadwear indicator
for more information on measur­
ing tire wear .
Uniform Tire Quality Grading
is a tire information system devel­
oped by the United States Nation­
a l Highway Traffic Safety Admin­
istration (NHTSA) that is designed
to help buyers make relative
215
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