2015 AUDI A6 brake fluid

232 Checking and filling
@ For the sake of the environment
Because of the problem of proper disposal
of brake fluid as we ll as the special tools
required and the necessary expertise, we recommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
Under normal operating conditions, the bat­
tery in your Audi does not need any mainte­
nance. With
high outside temperatures or
long daily drives we recommend that you have
the electro lyte level checked by a service fa­
cility . The electrolyte level should also be
checked each time the battery is charged
¢ page 234.
Have the battery checked when you take your
vehicle in for service . You are well adv ised to
replace a battery that is older than 5 years .
With certain types of airbag deployment, the battery is disconnected from the vehicle elec­
tr ical system for safety reasons¢
& in Re­
pair, care and disposal of the airbags on
page 161.
Disconnecting the battery terminals
Some vehicle functions (power window regu­
lators, for example) are lost if the battery ter­
minals are disconnected. These functions have
to be relearned after the battery terminals are
connected again. To prevent this , the battery
should only be disconnected from the vehicle
e lectrica l system when absolutely necessary
for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period
of severa l days or weeks, electrical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and main­
tains starting capabi lity over a longer period
¢page 198. Some of the convenience func­
tions may not operate, such as the interior
lights or power seat adjustment. The conven- ience
functions will be available again when
you switch on the ignition and start the en­ gine.
Winter operation
During the winter months, battery capac ity
tends to decrease as temperatures drop. This
is because more power is a lso consumed whi le
starting, and the headlights, rear window de­
fogger, etc., are used more often.
Avoid unnecessary power consumption, par­
ticu larly in city traffic or when traveling only
short distances. Let your authorized Audi
deale r check the capacity of the vehicle bat ­
tery before winter sets in¢
page 234 . A well
charged battery will no t only prevent star ting
problems when the weather is cold, but will
also last longer .
@ Tips
If your vehicle is left standing for several
weeks at extremely low temperatures, the
vehicle battery shou ld be removed and
stored where it w ill not freeze. This will
prevent it from be ing damaged and having
to be replaced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
ment under the floor . Before you check any­
thing in the luggage compartment,
read and
heed all WARNINGS
¢ .&, .
Always heed the safety warnings , when work­
ing on the vehicle battery or the vehicle elec­
t rical system to prevent 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.

Tires and wheels
Tires
General notes
Tires may be the least appreci­
ated and most abused parts of
a motor vehicle .
Tires may be the least appreci­
ated and most abused parts of
a motor vehicle. Tires are, how­
ever, one of the most important
parts of a vehicle, particularly
considering the comparatively
small patch of rubber on each
tire that assures that all-impor­
tant contact between you, your
vehicle and the road.
Maintaining the correct tire
pressure, making sure that your
vehicle and its tires do not have
to carry more weight than they can safely handle, avoiding
damage from road hazards and
regularly inspecting tires for
damage including cuts, slashes
irregular wear and overall con­
dition are the most important
things that you can do to help avoid sudden tire failure includ­
ing tread separation and blow-
~ outs.
0 <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Tires and wheels 237
Avoiding damage
If you have to drive over a curb
or similar obstacle , drive very
slowly and as close as possible
at a right angle to the curb.
Always keep chemicals includ­ ing grease, oil, gasoline and
brake fluid off the tires.
Inspect the t ires regularly for
damage (cuts, cracks or blis­
ters, etc.). Remove any foreign bodies embedded in the treads.
Storing tires
Mark tires when you remove
them to indicate the direction
of rotation. This ensures you to be able to mount them correct­
ly when you reinstall them.
When removed, the wheels or
tires should be stored in a cool, dry and preferably dark place.
Store tires in a vertical position if they are not mounted on
rims, in a horizontal position if
they are mounted on rims.
New tires
New tires have to be broken in
¢ _&. .
The tread depth of new tires
may vary , according to the type .,.
•
•
'

M N
0 I.J "". rl I.O
"' rl
"' rl
_&. WARNING
Sudden tire failure can lead
to loss of control, a crash and serious personal injury!
-Never drive a vehicle when the tread on any tire is worn down to the wear indica­
tors.
-
-Worn tires are a safety haz­ ard, they do not grip well on
wet roads and increase your risk of "hydroplaning" and
loss of control.
-Always keep chemicals that can cause tire damage, such
as grease, oil, gasoline and brake fluid away from tires .
-Tires age even if they are not being used and can fail
suddenly, especially at high
speeds. Tires that are more
than 6 years old can only be used in an emergency and
then with special care and at lower speeds.
-Never mount used tires on your vehicle if you are not sure of their "previous histo­ry." Old used tires may have
been damaged even though
the damage cannot be seen
that can lead to sudden tire
Tires and wheels 257
failure and loss of vehicle control.
New tires and replacing
tires and wheels
New tires and wheels hove to
be broken in.
Fig. 199 Tire specification codes on
the sidewall of a tire
No. Description
CD Passenger car tire (where
applicable)
0 Nominal width of tire in
millimeters
® Ratio of height to width
(aspect ratio)
© Radial
® Rim diameter code

29 4 Con sum er Inf ormation
-Always make sure the transmission se­
lector lever (automatic transmiss ion) is
in P (Park position) and the park brake is
applied .
@) For the sake of the environment
-Changing the engine settings wi ll ad­
versely affect em iss ion levels. This is det­
rimental to the environment and increas­
es fuel consumption .
- Always observe env ironmental regula­
tions when dispos ing of old engine oil,
used brake fluid, dirty engine coolant,
spent batteries or worn out tires.
- Undeployed airbag modules and preten­
s ioners might be classified as Perchlo ­
rate Material -spec ial handling may ap­
ply, see www.dtsc.ca .gov/hazardous­
waste/perch lorate . When the veh icle or
parts of the restraint system including
airbag modules safety belts wit h preten ­
sioners are scrapped, all applicable laws
and regulations must be observed. Your
authori zed Aud i dea ler is familiar with
these requirements and we recommend
that you have your dealer perform this
serv ice for you .
Additional accessories,
modifications and
parts replacement
Additional accessories and parts
replacement
Always consult an authorized Audi dealer be­
fore purchasing accessories.
Your veh icle incorporates the latest safety de­
sig n featu res ensu ring a high standard of ac­
tive and passive safety .
This safety could be compromised by non-ap­ proved changes to the veh icle. For this reason ,
if pa rts have to be replaced , please observe
the following points when install ing addition­
a l accessories: Approved Audi accessories and genuine Aud
i
parts are available from authorized A udi deal­
ers.
T hese dea le rs a lso have the necessary facili­
ties, tools and trained specialists to install the parts and acc essories proper ly .
A WARNING
-Using the wrong spare parts or using non-
approved accessories can cause damage to
the veh icle and ser ious persona l injury.
- Use on ly accessories express ly approved
by Audi and gen uine Audi spare parts
- These parts and accessories have been
specia lly designed to be used on yo ur ve­
h icle .
- Never install accessor ies such as tele­
phone crad les or beverage ho lders on a ir­
bag covers or within the airbag deploy­
ment zones . Do ing so will increase the
risk of injury if a irbags are triggered in an
accident!
- Before you check anything in the engine
compa rtment, always read and heed a ll
WARNI NGS
9 page 222 .
(D Note
-If items other than genu ine Audi spare
parts, add-on equipment and accessory
items are used or if repair work is not
performed accord ing to specified meth­
ods, this c an resu lt in seve re damage to
your vehicle's eng ine and body (such as
corrosion) and adversely affect yo ur vehi ­
cle's warranty .
- If emergency repairs must be performed
elsewhere, have the vehicle examined by
an authorized A udi dealer as soon as
possible .
- The manufacturer cannot be held liable
for damage wh ich occ urs due to failure
to comply with these stipu lations.

298 Index
AUTO automatic climat e control . ... ... ... ..
71
Automatic headlights ....... .. .... .. 43
climate control . . . . . . . . . . . . . . . . . . . . . 68
Auto Lock . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3
Automatic belt retractor .. ... ..... .. .
139
Automatic climate control
Air vents . .... ........... .... .... ..
7 1
Automatic recirculation . . . . . . . . . . . . . . 72
Opera tion . . . . . . . . . . . . . . . . . . . . . . . . . 70
Setup . .. .. ................ ... .. .. 72
synchron izing .... ......... ... .. .. .. 71
Automatic Shift Lock (ASL) . . . . . . . . . . . 108
Automatic transmission ..... .. .. .. .. . 107
Automatic Shift Lock (ASL) .......... 108
Driving .................... ..... . 109
Emergency mode .......... ... .... . 112
Emergency release .......... .. .... . 113
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . 111
Manual shift program ..... .... .... . 111
Selector lever . . . . . . . . . . . . . . . . . . . . . 107
Automatic wipers .................. .. 48
Auto Safety Hotline ........ .. .. .. .. . 134
Ave rage consumption ....... .. .. .. .. . . 25
Average speed . . . . . . . . . . . . . . . . . . . . . . .
25
Avoid damaging the vehicle .. .. .. .. .. . 201
B
Ba ttery . .. .. ... .. ..... ... .... .. .. . 232
Charging . .. ................ ... ... 234
Important warnings .. .... .. .. .. .. . 232
Jump starting . ........... .. .. .. .. . 283
Locat ion . .. ............. .. .. .... . 232
low ... .. .. .. . ... ....... .. .. .. .. . 198
Replacing the battery ......... .. .. . 235
State of charge ............ ... .... . 198
Winter operation .......... ... .... . 232
Working on the battery ...... .. .... . 232
Before driving ............. .. .. .... . 126
Blended gasoline ........... ... .. .. . 214
Blower (automatic climate control) . . . . . . 71
Blower (climate control) . . . . . . . . . . . . . . . 68
Booster seats ............. .. .. .... .
180
Brake fluid
Changing the brake fluid ............
231
Checking the brake fluid lev el ... .. .. . 231
What is the correct brake fluid level? . . 231
What should I do if the brake fluid warn-
ing light comes on? ................
231
Brake system
Anti- lock braking system ............ .
19
Brake assist system ................ 193
Brake booster .... ............. .... 196
Brake fluid . ..... ................ . 231
Brake fluid specifications for refill and re-
placement .... ... .............. ..
231
Brake pads .. .. .. .......... ...... . 200
Electromechanical parking brake ... .. . 77
Fluid reservoir ... ................ . 231
How does moisture or road salt affect the
brakes? . .. .. .. .. ............. .. ..
195
Warning/indicator lights ............. 15
Worn brake pads symbol . . . . . . . . . . . . . 20
braking guard
Settings .. .. .. .. .. ........... .. .. .
91
Braking guard . .. .. ............. .. .. . 84
Messages . .. .. .. .. ..... ... ... .... . 91
Break-in period .... ................ . 200
Brake pads .... .. ................ . 200
Tires ..... .... ................... 200
Bulbs ...... .. .. .. .. ... .... .... .... 282
C
Californ ia Proposition 65 Warning . .. .. 223
Battery specific ... .......... .... .. 233
Capacities .. .... ............. ...... 290
Engine oil ..... .. .......... ...... . 224
Carbon parts
Cleaning . . . . . . . . . . . . . . . . . . . .
211, 212
Car carrier
Transpo rting your vehicle ...........
287
Care ...... .... ... .. .............. . 209
Cargo area ...... .. .. .............. . 132
Cargo net . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Catalytic converter . ............. .... 201
Center armrest
Cockpit ...........................
55
Central locking .... ............. .... . 33
Emergency locking ............. .... .
37
Certification .. .. .. ..... ........... . 295
Changing a wheel .. ................ . 272
Changing engine oil ... .. ... ..... .. .. 227

M N
0 <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Starting with jumper cables . ... .. .. . 283
Stopping ... ..... ..... ... ... ... .... 75
E ng ine compartment ....... .. .. .. .. . 224
C losing the hood ......... .. .. .. .. . 223
Opening the hood ........ .. .. .. .. . 222
Safety instructions ..... ... .. .. .. .. . 222
Working in the engine compartment .. 222
E ng ine coolant ............ .... .. .. . 228
Adding coolant ........... .. .. .. ... 229
Chec king the eng ine coolan t leve l .. .. . 228
Expansion ta nk . ....... ... .. .. .. ... 228
M alfunct ion symbo l .... ... .. .. .. .. .. 1 6
Radiator fan . ..... .... ... .. .. .. ... 230
Temperature ga uge ....... .. .. .. .. .. 11
E ng ine oi l ... ............. .... .. ... 224
Adding .... .... .. .... ... .. .. .. ... 226
Addit ives ... ... .. ..... ... .. .. .. ... 226
Changing .. .... .. .... ... .. .. .. ... 227
Checking the eng ine o il level .. .. .. .. . 226
Indications and cond it ions requ iring ex-
tra check ing .. ... .. ... ... .. .. .. ... 226
Indicator light . . . . . . . . . . . . . . . . . . . . . 18
O il consumption ............. .... .. 225
Pressu re malfunct ion ...... .. .. .. .. .. 17
Recommended oil check in tervals .. .. . 226
Sensor defe ctive . . . . . . . . . . . . . . . . . . . . 22
Specification and viscos ity . ... .. .. .. . 224
E ng ine sound .............. ... ... .. 100
Eng ine speed limitat ion ..... .. .. .. .. .. 21
E ng ine start-stop mode
refer to Star t-Stop-System ... .. .. .. .. 81
E ng ine start system (indicator lights) .. .. 18
Environment Break- in period ........... .... .. ... 200
Catalytic converter ........ .. .. .. .. . 201
D iese l particu late filter .... .. .. .. .. . 202
Disposing of your vehicle battery ..... 235
Driving at high speeds ........ .... .. 203
Dr iving to m inimi ze pollu tion and no ise 202
Fu el ... .. .. .... ............. .. .. . 216
Fu el economy ... .. .... ... .. .. .... . 202
L eaks under your vehicle ... .. .. .. .. . 222
L etting the ve hicle stand and warm up . 203
Proper disposal of drained brake fluid . 231
Prope r disposal of drained engine coo l-
ant . .. ... . .... ............. .. .. . 229
Proper disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 226, 227
Index 301
Recycling used engine oil ..... ... .. .. 226
Unl eaded fuel .. .. .. . ... ...... ... .. 214
What shou ld I do with an o ld battery? . 235
E vent Data Recorde r (ED R) ........ .. .. 192
Exhaust tail pipes Cleaning .. .. .. .. .. ... ....... ..... 210
Expansion tank .. .. .. . ... ...... ... .. 228
E xte rior lighting . .. ................. . 43
Exterior m irrors
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . SO
Dimm ing .. .. .. .. .. . .. .... .... .. .. . 51
Heating ......... .. ..... ........... SO
Exterior temperature display ...... .. .. . 24
F
Fastening
Booster seats .. .. .. ........... .... 180
Convertib le child safety seats .... .. .. 178
Infant seats . . . . . . . . . . . . . . . . . . . . . . 177
Floor mats . ... .... .. . .. .. ..... ... .. 131
Foot peda ls .... ... .. ..... .......... 131
For the sake of the environment
Ga soline fumes and the env ironme nt .. 216
Reduc ing engine noise by early upshift-
ing .......... ... .. ................ 11
Refueling . .. .. .... .......... ..... 216
Savi ng f uel by early ups hifting ... .. .. . 11
Fo ur- zone automatic climate control . .. . 70
Front airbags Description . ... .... . ... ...... ... .. 149
How they work ...... .. .. ..... ... .. 155
Fron tal coll is io ns and the laws of p hysics 13 7
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 52
Adjusting ... .. .. .. . .. .... .... .. .. 128
Child restraints i n the front seat ...... 147
Fuel Additives .. .. .. .. .. . .............. 214
B lended gasoline ..... ............. 214
Current consumption ... .... .... .. .. . 25
E conomy messages (effic iency p rogram) 26
Fuel fi ller flap emergency re lease . .... 218
F uel fi ller nec k ... ............. .... 216
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline .. .. .. .. ... ............ .. 214
Gasoline additives . .. .. .. ..... ... .. 215
Low fue l level symbol . . . . . . . . . . . . . . . 22
Octane rat ing .. .. .... ......... .. .. 214
•
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308 Index
u
ULSD No. 2 (Diese l fuel) ......... .... . 215
Unfasten ing safety belts .... .. .. .. .. . 141
Unid irectiona l tires ......... .. .. .. .. . 238
Uniform tire quality grading . .. .. .... . 263
Unlock ing
Power locking sw itch ....... ... .. .. ..
36
Remote control . . . . . . . . . . . . . . . . . . . . 34
Using the key .. .......... .. .. .... .. 36
V
Valet park ing . ................ ... .. .. 40
Vanity mirrors ................ ..... .. 47
Vehicle
care/cleaning . ........... .. .. .... .
209
Vehicle control modules ......... .. .. . 192
Vehicle e lectrical system . . . . . . . . . . . . . . 17
Vehicle identification labe l ... .. .. .. .. . 289
Vehicle Identification Number (VIN) ... . 289
Vehicle jack . . . . . . . . . . . . . . . . . . . 271, 275
Vehicle literature . . . . . . . . . . . . . . . . . . . . . S
Vehicle shutt-down ........... .. .... . 202
Vehicle transport .......... .. .. .. .. .
287
Ventilation .. ... .... ...... .. .. .. .. .. 67
Viny l
C leaning ... ................ ..... .
212
w
Warning/indicator lights .......... .. .. 12
Airbag system ............ ... .... .. 19
Anti-lock braking system (ABS) . . . . . . . . 19
Brake system .............. .. .... .. 15
Cruise control . . . . . . . . . . . . . . . . . . . . . . 23
Electromechanical parking brake .. .. .. 16
Electronic power control . . . . . . . . . . . . . 20
Electronic Stabilization Control (ESC) .. . 19
Generator . . . . . . . . . . . . . . . . . . . . . . . . . 1 7
Glow plug system ........ .. .. .... .. 21
Instrument cluster . . . . . . . . . . . . . . . . . . 11
Malfunction Indicator Lamp (MIL) . . . . . 21
Safety belt . . . . . . . . . . . . . . . . . . . . . . . . 17
Turn signals ............. .. .. .. .. .. 23
Warn ing/Ind icator lights
A irbag system . . . . . . . . . . . . . . .
157, 158
PASSENGER AIR BAG OFF ... ... .. .. . 158
Warranty coverages ............. .... 292
Washer reservoir .. ................ . 235
Wear indicator .. .. ... .......... .. .. 255
Weights .... .... .. ............. .... 289
What happens if you wear your safety belt
too loose? ...... .. .. ... ....... .... .
140
What happens to unbe lted occupants? . . 137
What impai rs driving safety? ...... .. .. 127
What should I do after changing a
wheel? ...... ... .. .. ... ....... .... .
251
What should I do after replacing whee ls? 251
Wheel bolts
Torque .. .. .. .. .. .. ........... .. ..
266
Wheels ....... ... .. .............. . 237
Checking tire pressure .......... .. .. 249
Cleaning ...... .. .. ........ ...... . 210
Cold tire inflation pressure ........ .. 244
General notes .. .. ... .......... .. .. 237
G lossary of tire and loading terminolo-
gy ....... .... .. ................ .
239
New tires and whee ls .............. . 257
Tires and vehicle load limits ..... .... 252
When must a safety be lt be replaced? .. 139
When must the airbag system be inspect-
ed? ......... ... .. .. ... ....... .... .
157
When should I adjust the tire pressures? 251
When should I chec k the tire pressures? . 251
Where are lower anchorages located? ... 186
Where can I find the tire pressures for my
car? ....... .... .. ................ .
249
Why safety belts? . . . . . . . . . . . . . . 136, 137
Windows
Cleaning/removing ice .... ...... .. ..
211
defrosting (automatic climate control) . 71
defrosting (climate control) . . . . . . . . . . 69
Windshie ld
Cleaning .. .... .. ............. .....
48
defrosting (automatic climate control) . 71
defrosting (climate control) . . . . . . . . . . 69
Windshie ld washer system .......... .. 48
Washer fluid level ............. .... . 22
Washer reservoir . ............. .... 235
Windsh ie ld wipers
Cleaning . ..... .. .. .............. ..
49
Folding up .... .. ............. ..... 49
Indicator light . .. ............. .. .. . 22