2015 AUDI RS7 SPORTBACK check engine light

222 Check ing and filling
&
Batt ery aci d c ont ain s s ulfuric acid .
A lw ay s w ear gloves and eye protec-
ti on.
@
No
- spark s
- flame s
· sm okin g.
A
When a b atte ry is ch arged , it p rodu -
ce s hydr oge n ga s wh ich i s ex plosi ve
.
and co uld cause pe rsonal injur y.
®
Alway s keep the batt ery well out of
re ach of children.
A WARNING
Whenever working on the battery or on
the electrical system, there is the r isk of
injury, acc ident and even fire. Read and
heed the following WARNINGS:
- Always wear eye protection. Do not let
battery acid or any lead part icles get on
your sk in or cloth ing . Sh ield your eyes .
Explosive gases can cause blindness or
other injury.
- Battery acid contai ns sulfur ic acid. Sulfu­
ric acid can cause blindness and severe
burns.
- Always wear gloves and eye protection.
Do not tilt the battery because ac id
could leak out of the vent ilation open­
ings.
- If you get battery acid in your eyes or
on your sk in, immediately rinse with
cold water for severa l m inutes and get
medical attention .
- 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 neg-
ative cab les.
- When working on the battery, be sure
not to short-circuit the terminals with
tools or other metal objects. This would
cause the battery to heat up very quickly,
wh ich could lead to damage or explosion
and personal injury. -
When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
- Always keep the battery well out of the
reach of children.
- Before work is done on the electrical sys­
tem, disconnect the negat ive ground ca­
ble.
- Before performing any work on the e lec­
trica l system, switch off the engine and
ignit ion as well as any electrical equip­
ment. The negative cable on the battery
must be disconnected .
If you are just go­
ing to replace a light bulb, then it is
e nough to swi tc h off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you wi ll set off the alarm.
- When disconnecting the battery, f irst
d isconnect the negat ive cab le and then
the posit ive c ab le.
- Before reconnecting the batte ry, ma ke
sure all e lectr ica l consumers are sw itch­
ed off . Re connect the pos it ive cable first
and then the negative cable. Never inter ­
change the cables - this could start a fire!
- Never charge a frozen or a thawed-out
battery. It could exp lode! If a battery has
frozen, then it must be replaced . A dis­
charged battery can freeze over at 32
°F
(0 oc).
- Make sure the vent hose is always attach­
ed to the opening on the s ide of the bat­
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! Al­
ways rep lace a damaged battery.
A WARNING
Ca lifornia Proposition 65 Warning:
- Battery posts, terminals and related ac­
cessories conta in lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive problems . Wash hands after han-
dling.
~

224 Check ing and filling
cracked an d weake ned when the battery
froze.
- Charge the battery in a we ll ventilated
area. Keep away from open flame or elec­
trical spark . Do not smoke. Hydrogen gas
generated by the battery is exp losive.
- To reduce the danger of explosion, never
connect or disconnect charger cables
wh ile the charger is operating .
- Fast charg ing a battery is dangerous and
should only be attempted by a compe­
tent technician w ith the proper equip ­
ment .
- Battery acid that may spill d uring charg­
ing should be washed off w it h a solution
of warm water and ba kin g soda to neu­
t rali ze the acid.
~ Note
Never use a fast charger as a booster to
start the engine. This will seriously dam ­
age sensitive ele ct ronic components, such
as co ntrol units, relays, rad io, etc. , a s we ll
as th e batte ry charge r.
Battery replacement
The new battery must have the same specifi­
cations and dimensions as the original equip­
ment battery.
I ntell igent energy manag ement in your veh i­
cle is respo nsible for d ist ribu ting the e lectr i­
cal energy throughou t you r vehi cle
~ page 193. The inte lligen t energy m anage­
ment system w ill keep the engine batte ry
charged better than vehicles w it h out t his sys­
tem . T o make sure the additional e lectrical en ­
ergy is available once again after you have
changed t he battery, we recommend that you
install batteries of the same type and manu ­
facture only (the same as those ins talled at
the t ime your vehicle was delivered). Specifi­
cations a re listed o n the battery hous ing. You r
author ized de aler m ust code the b attery in
the ene rgy management system to enable yo u
to use the energy managemen t fu nctions co r­
rectly after replac ing the battery. T
he new battery must have the same capacity,
vo ltage ( 12-volts) , amperage , construction
and plug sea ling .
When ins tall ing t he battery, make su re the ig­
nition and a ll elect rical consume rs are switch ­
ed off .
(D Note
M ake sure the ven tilat ion hose on the side
of the ba ttery is connecte d, otherwise
fumes or batte ry acid can lea k out .
@ For the sake of the environment
B ecause o f the p rob lem of p roper disposal
of a battery, we recommen d your author ­
i zed Audi dea ler chan ge the battery for
you . Batteries contain sul fur ic acid and
l ead and must a lways be disposed of p rop­
e rly in compliance with all environmental
regulations . Disposing of vehicle batter ies
i mprope rly is very dange rous to th e envi ­
r o nment.
Windshield/headlight*
washer container
Fi g. 19 4 En gin e co mpa rt m en t: cove r on t he w inds hield
a n d head ligh t* was her fl ui d reservo ir
T he washer fluid co ntai ner is mar ked w it h t he
symbol$ on its cap
~ fig. 194, ~page 213,
fig . 188.
.,. Before you chec k any thing in the engine
comp artment,
always read and heed all
WARNINGS ~ A in Working in the engine
compartment on page 211 .
.,. Lift the fi ller cap tongue to add washer flu -
id. You can f ill the container to the top. ..,.

M N
0:: <.J 'SI: ,...., \!) er, ,...., er, ,....,
Setup ..... .. .... .. .... ... .. .. .... 72
synchronizing ... .. .... ... .. .. .. .... 71
Automatic S hift Lock (ASL) .. .. .. .. .. . 104
Automatic transmission . . . . . . . . . . . . . . 103
Automatic Shift Lock (ASL) . .. .. .. .. . 104
Dnvmg .. ..... ........... ... ... .. 105
Emergency mode .............. .... 107
E mergency release ........ .. .. .. .. . 108
Kick-dow n . . . . . . . . . . . . . . . . . . . . . . . . 107
M anual sh ift program ..... .. .. .. .. . 10 7
Selec to r l ever . . . . . . . . . . . . . . . . . . . . . 103
Automatic wipe rs ....... ...... .... ... 48
Auto Safety Hotline ........ .. .. .. .. . 128
Aver age consumption ....... .. .. .. .. .. 24
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damaging the vehicle . ... .. .. ... 197
B
B ag hoo ks . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7
Battery . .. ... ...... ............. .. 22 1
C ha rging . ............ ...... .... .. 223
I mportant war nings ...... .. .. .. .. . 22 1
J um p starti ng ............ .... .. .. . 273
L ocat ion . .. ............. .. .. .. .. . 22 1
l ow ..... .. .. .. .. .. .... ... .. .. ... 193
Replacing the batte ry .. ... .. .. .. .. . 224
State of charge . ... .... ... .. .. .... . 193
W inter operation ......... .. .. .. .. . 221
Working on the battery .... .. .. .. .. . 221
B efore dr iving . ..... .... ... .. .. .. ... 120
Blended gasoline .... ...... .. .. .. .. . 206
Blower (automatic climate control) .. .. .. 71
B oost displ ay . . . . . . . . . . . . . . . . . . . . . . . . 28
Booster seats . . . . . . . . . . . . . . . . . . . . . . 17 4
Boost pressure indicator . ... .. .. .. .. .. 28
B rake flu id
C hanging the brake fl uid ... .. .. .. .. . 220
Che ckin g the br ake fl uid level . .. .. .. . 220
What is the cor rect brake flu id leve l? .. 220
What should I do if the bra ke fl uid warn-
ing light comes on? .... ... .. .. .. .. . 220
B ra ke system
Anti -lo ck bra king sys tem ... .. .. .. .. .. 18
B rake ass ist system .... ... .. .. .. .. . 18 7
Brake booster ... .. .... ... .. .. .. ... 191
Bra ke fl uid ... .... .... ... .. .. .. ... 220
Inde x 287
Brake fluid specifications fo r refill and re -
placement . ... .... . ... ...... ... .. 220
B rake pads . ... .. .. . .. ... .... ... .. 196
E lectromechanica l parking brake ... .. . 77
Flu id reservo ir . .. .... ............. 220
How does moistu re or road salt affect the
brakes? ... .. .. .. .. . .. .... .... .. .. 191
Warning/ind icator lights ........... .. 14
Wor n bra ke pads symbo l ........ .... . 19
braking guard Settings ........ .. ..... ........... 88
B raking guard ..... .. . .. .. ..... ... .. . 81
Messages ... .... .. . .. .. ..... ... .. . 88
B reak-in per iod .. .. .. .. ........... .. 196
Br ake pads .. .. .. ................. 196
T ires ... .. .. .. .... . ... ...... ... .. 196
Bulbs .. ... ... .. .... .......... ..... 272
C
Californ ia Proposition 6S Warn ing . .. .. 212
Battery spec ific .................. . 222
Capacities . ... .. .... . ... ...... ... .. 280
Engine o il ... .. .. ................. 213
Carbo n parts
Cleaning . . . . . . . . . . . . . . . . . . . . 203, 204
Car carrier Transpo rting your vehicle ........... 277
Care ......... .. .. ................. 201
Cargo area .. .. .. .. ............... .. 126
Cargo ne t . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Catalytic converter . . . . . . . . . . . . . . . . . . 197
Cen te r armres t
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Cent ral lock ing .. .. .. . .. .... .... .. .. . 33
E mergency locking .. .............. .. 37
Certif ication . ... .. .. .. ... ..... ... .. 285
Changi ng a wheel .. ............. .... 263
Changi ng engine oil ................. 216
Checking Engine coolant level .. .. ..... ... .. .. 217
Tire pressure . .. ...... ............. 237
C hild rest rain ts
Danger of using child restrain ts in the
fr ont seat ... .. .... . ... ...... ... .. 141
Where can I get additional informat ion
about child restraints and the ir use? .. 183
•
•

M N
0:: <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Defrosting (windows)
automatic climate control . ... .. .. .. ..
71
Determi ning cor rect load limit . .. .. .. . 242
Dimensions .. .. ........... .. .. .. ... 280
D imming the rearview mirro r .. .. .. .. .. 5 1
Displays
Clean ing . ..... ........... ... ... ..
203
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
D oor/ rear lid warning . . . . . . . . . . . . . . . . . 22
Doors
Powe r ch ild safety lock ......... .... .
40
Driver information system
Boost . ... . .... ............. .. .. ..
28
CD/radio display . . . . . . . . . . . . . . . . . . . . 22
Door/rear lid warning . . . . . . . . . . . . . . . 22
E ng ine oil temperatu re d isplay .. ... ... 28
E xterio r tempe ratu re d isp lay . .. .. .. .. 22
On-boa rd compute r . . . . . . . . . . . . . . . . . 24
Shifting indicator . . . . . . . . . . . . . . . . . . . 28
Driver seating position . . . . . . . . . . . . . . . 121
drive select .. .... .. .... ... .. .. .. .... 96
adapt ive a ir s uspension/sport . .. .. .. .. 96
Adapt ive dampers . . . . . . . . . . . . . . . . . . 96
Curve light . . . . . . . . . . . . . . . . . . . . . . . . 96
Eng ine sound ............... ... ... .
96
Safety belt tensioner . . . . . . . . . . . . . . . . 96
Sport different ial . . . . . . . . . . . . . . . . . . . 96
Driving safe ly . . . . . . . . . . . . . . . . . . . . . . 120
D riving thro ugh w ater ...... .. .. .. .. . 19 7
Driving time . . . . . . . . . . . . . . . . . . . . . . . . 24
Dup licate key . . . . . . . . . . . . . . . . . . . . . . . 3 1
D ust filter
refer to Po llutant filte r . . . . . . . . . . . . . . 69
Dynamic steering ............. .... .. 192
E
Easy entry feature . . . . . . . . . . . . . . . . . . . . 7 4
E fficiency program
F ue l economy messages . . . . . . . . . . . . .
25
Other equipment . . . . . . . . . . . . . . . . . . . 25
E lect rical accessories (sockets) . . . . . . . . . 60
Elect romechanical parking brake
Eme rgency braking . . . . . . . . . . . . . . . . . 78
Opera tion . . . . . . . . . . . . . . . . . . . . . . . . . 77
P ark ing .. ... ......... .... ... ... ... 77
Releasing and clos ing ..... .. .. .. .. .. 77
Inde x 289
Starting ass ist . . . . . . . . . . . . . . . . . . . . . 78
Starting from rest . . . . . . . . . . . . . . . . . . 78
Warning/ind icator lights ..... ... .. .. .
15
El ec tromechani ca l powe r ass ist .... .. .. 192
E lectronic differential lock
Warning/ind icator lights . .......... ..
18
Electronic differential lock (EDL) ... .. .. 187
Warning/ind icator lights .......... .. . 18
El ectronic immob ilizer . . . . . . . . . . . . 25, 32
E lectronic power contro l (E PC)
warning/ind icator light ... .. ... ... .. .
19
Electronic Stabilization Cont ro l (ESC) . . . 187
Warning/ind icator lights ........ .. .. . 18
Emergency ac tuatio n
Doors . ... .. .... .. . .. .. ..... ... .. .
37
Power sunroof ..... . .. ..... ... .. .. . 42
Rea r lid ... .. .... ... .. .. ..... ... .. . 39
Emergency b ra ki ng . .. .. ......... .. .. . 78
Emergency flasher . ............. .. .. .
45
Warning/ind icator lights ........... .. 22
Emergency re lease
Se lector lever .. .. .................
108
E mergency s tar ting .... ......... .. .. 2 73
Emergency towing . .. .. .. ...... .... . 275
Emergency wa rn ing triangle ... ... .. .. 259
E nergy ma nagement . .... .... ... .. .. 193
Engine
Compartment .. .. .................
213
Coolant ......... .. ............... 217
starting . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Starting with jumpe r cables ..... .. ..
273
Stoppi ng .. .... .. .................. 75
Engine compartment ................ 213
Closing the hood ................. . 212
Opening the hood .. . .. .. .. ... ... .. 211
Safety i nstr uctions .. .............. . 211
Working in the eng ine compartmen t .. 2 11
Engine coolant .. .. ................. 217
Adding coo lant ... .. .. .. ...... .... . 218
Checking the engine coo lant level . .. .. 217
Expans ion tank .... ............... . 217
Malfunction sy mbol ............ .. .. . 15
Radi ator f an . .. .... ... .......... .. 2 19
Temperat ure gauge ... ...... ... .. .. . 10
Engine o il ..... ... .. ..... .......... 213
Adding ......... .. ..... .......... 215
Additives .. .. .. .. .. .. ........... .. 2 15
•
•

290 Index
Changing ....... ..... ... .. .. .... . 216 F
Ch ecking the engin e oi l le vel .. .... .. . 215
Indications and cond it ions requ iring ex-
tr a checking .... .. .... ..... .. .. .. . 215
Indica tor ligh t . . . . . . . . . . . . . . . . . . . . . 17
Oil consumption .............. .. ... 214
Pressure malfunction .. .... .. .. .. .. . . 16
Recommended oil check intervals ..... 215
Sensor defective . . . . . . . . . . . . . . . . . . . . 20
Specification and viscos ity .. .. .. .. .. . 213
Temperature indicator ....... .. .. .. . . 28
Engine sound ... ... .... ..... .. .. .. .. 96
Engin e sp ee d lim ita tion ....... .. .... . . 20
E ng ine start system (indicator lights) .. . . 17
Environmen t
Break -in period ............ ... .. ... 196
Catalytic converter ......... ... .. ... 197
Disposing of your vehicle battery .. .. . 224
Driving at high speeds ..... .. .. .... . 199
Driving to minim ize pollution and noise 198
Fu el .. ... ....... ......... ... .... . 208
Fu el economy ............. ... .... . 198
Leaks und er your vehicle ........... . 211
Letting the veh icle st and and warm up . 199
Proper d ispo sal o f drained brake fluid . 220
Proper disposal of dra ined engine cool-
ant ..... .. ................ ... ... 218
Proper disposa l of dra ined engine
oil .. .. .. ...... .. ... .... .. .. 215 ,216
Recycling used engine oil . .. .. .. .... . 215
Un leaded fuel ... ... ... ... .. .. .. .. . 206
What should I do with an old battery? . 224
Event Data Recorder (EDR) ..... .. .. .. . 186
E xhaust t ail pipes
Cleaning . .. .. . .. ..... ... .. .. .. .. . 203
Expansion tank .............. .. .... . 217
Exterior lighting ............... .. .... 44
Ext erior mirrors
Ad justing .. .... .. ... ...... .. .. .. .. 50
Dimming ..... .... .... ..... .. .. .. .. 51
Heating .. .. ... ... .... ..... .. .. .. .. 50
Exterior temperature display ..... .... . . 22 Fastening
Booster seats .... ................. 174
Conv ertib le child saf ety seats ..... ... 172
I nfant seats . . . . . . . . . . . . . . . . . . . . . . 171
Floor mats .... .. .. ... .. ..... ... .... 125
Foot pedals ................. ....... 1 25
For the sake of the environm ent
Gasoline fumes and the env ironment . . 208
Reducing eng ine no ise by early upsh ift-
ing ... .... .. .. .. ...... .. ... ...... . 10
Refueling ............ ........... . 208
Sav ing fuel by early upsh ifting ...... .. 10
Four-zone automatic climat e control ... . 70
Front airb ags
Description . . . . . . . . . . . . . . . . . . . . . . . 143
How they work . . . . . . . . . . . . . . . . . . . . 149
Frontal coll is ions and the laws of phys ics 131
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 53
Adjusting . .. .. .. ... .. ..... ... .... 122
Child res tra ints in the fron t se at .... .. 141
Fuel Additives . ..... .. ................. 206
B lended gasoline .............. .... 206
Cur rent consump tion ... .. .. .. .. .. .. . 24
Economy mess ages (efficiency program) 25
Fuel filler flap emergency release .... . 209
Fuel filler neck ........ ........... . 207
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Gasoline .... .. .. ... .. .. .. .. .. .... 206
Gasoline additives ...... ....... .. .. 207
Low fuel level symbol . . . . . . . . . . . . . . . 20
Octan e rating .... .............. ... 206
Recommendation ............... ... 206
Refuelling . .. .. .. ...... ....... .... 208
Reserve ... .. .. .. ... .. .. .. .. .. .... . 11
Tank capac ity . . . . . . . . . . . . . . . . . 11,280
Fuses Assignment ..... ... .......... .... 269
Rep lac ing . .. .. .. ....... ..... ..... 269
G
Garage door opener (Homelink) ... .. .. . 42
Garment hooks .... ... ............. .. 61