2013 AUDI A5 COUPE check engine light

228 Checking and filling
-Always wear eye protection. Do not let
battery acid or any lead particles get on
your skin or clothing . Shield your eyes .
Explosive gases can cause blindness or
other injury .
- Battery acid contains sulfuric acid . Sulfu­
ric acid can cause blindness and severe
burns .
- Always wear gloves and eye protection.
Do not tilt the battery because acid
could leak out of the ventilation open­
ings.
- If you get battery acid in your eyes or
on your skin, immediately rinse with
cold water for several minutes 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 cables.
= 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,
which 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 negative ground ca­ble .
- Before performing any work on the elec­
trical system, switch
off the engine and
ignition 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
enough to switch
off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you will set off the alarm. -
When disconnecting the battery, first
disconnect the negative cable and then
the positive cable.
- Before reconnecting the battery, make
sure all electrical consumers are switch­
ed off. Reconnect the positive 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 explode! If a battery has
frozen , then it must be replaced . A dis­
charged battery can freeze over at 32°F
(QOC).
- Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery .
- Never use batteries which are damaged.
There is the danger of an explosion! Al­
ways replace a damaged battery.
A WARNING
California Proposition 6S Warning:
- Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive problems. Wash hands after han­
dling.
(D Note
- Do not disconnect the vehicle battery
when the ignition is switched on or when the engine is running, otherwise, you will
damage electronic components in the
electrical system.
- If your vehicle is going to stand for a
long period of time without being driven,
protect the battery from "freezing", oth­
erwise it will be damaged and will then
have to be replaced .

230 Check ing and filling
Never use a fa st charger as a booster to
start the engine . T his will seriously dam­
age sensitive electronic components, such
as control units, relays, rad io, etc ., as well
as the battery charger.
Battery replacement
The new bat tery must have the same specifi­
cations and dimensions as the original equip­
ment battery .
Intelligent energy man agement in your veh i­
cle is respons ible for d istributing the e lectr i­
cal energy throughout your vehicle
c::>
page 191. The intell igent energy ma nage­
ment system w ill keep the engine battery
cha rged bette r then vehicles w it h out th is sys ­
tem. To make sure t he addi tional e lectrica l en­
e rgy is availab le once again after you have
cha nged t he battery, we recommend that you
install batteries of the same type and ma nu­
facture only (the same as those installed at
the time your vehicle was delivered). Specifi­
cations are listed on the battery hous ing. Your
author ized Audi dealer must code the battery
in the ene rgy management system to enable
you to use the ene rgy management functions
cor rectly after repla cing t he battery .
If it is not possible to use a battery of this
type, the new battery must have the same ca­
pac ity, voltage ( 12 volts), amperage , con­
s truction and plug sea ling .
When insta lling the battery , make sure the ig ­
ni tion and all electr ical cons umers are turned
off.
0 Note
Ma ke sure t he vent ilation hose on the s ide
of the batte ry is con nected, ot herwis e
fumes or battery ac id can leak out.
@ For the sake of the environment
Because of the problem of proper d isposa l
of a battery , we recommend your au thor­
i z ed Audi deale r change the batte ry for you
. Batteries contain sul fur ic acid and
l ead and must a lways be disposed of prop­
erly in comp liance with a ll environmental
regulations. Disposing of vehicle batter ies
i mproperly is very dangerous to the envi­
ro nment .
Windshield/headlight*
washer container
Fig. 17 5 En gin e compa rt m en t: Cover o n the wind ­
s hi eld an d headlig ht• was her fluid conta iner
T he was her fluid co nta iner is mar ked w ith the
symbol Oon itsc ap c::> fig.17 5,
c::>page218,
fig. 169 .
.,. Before yo u check anything in the engine
compa rtment,
always read and heed all
WARNINGS c::> A in Working in the engine
compartment on page 216.
.,. Lift t he fi ller cap tongue to ad d washer flu­
id . You can fi ll the containe r to the top .
.,. Press t he cap back o nto the f iller neck afte r
fi lling the conta iner .
You can find the reservo ir
capacity in the table
in
c::> page 271.
Clean wa ter should be used when filling up. If
poss ib le, use so ft wa ter to preven t scaling on
t h e washer jets . A lways add a glass clea ner
so lution (with frost protection in the winter) .
(D Note
Do not mix engine coo lant antifreeze or
any other a dditives to fill up the wind­
s hi eld washer rese rvoir .

Emergency situations
General
This chapter is intended for trained emer­
gency crews and working personnel who
have the necessary tools and equipment to
perform these operations.
Starting by pushing or
towing
(D Note
Vehicles with an automatic transmission
cannot be started by pushing or towing .
Starting with jumper
cables
If necessary, the engine can be started by
connecting it to the battery of another vehi­
cle.
If the engine should fail to start because of a
discharged or weak battery, the battery can be
connected to the battery of
another vehicle,
using a
pair of jumper cables to start the en­
g ine.
Jumper cables
Use only jumper cables of sufficiently
largecross section to carry the starter current
safe ly. Refer to the manufacturer's specifica­
tions.
Use only jumper cables with
insulated termi­
na l clamps which are distinctly marked:
plus(+) cable in most cases colored red
minus(-) cable
in most cases colored black .
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal
injury. Follow the instructions below for
safe handling of your vehicle's battery.
- Always shield your eyes and avoid lean­
ing over the battery whenever possible.
Emergency situations 263
-A discharged battery can freeze at tem­
peratures just below 32 °F (0 °C). Before
connecting a jumper cable, you must
thaw the frozen battery completely, oth­
erwise it could explode.
- Do not allow battery acid to contact eyes
or skin . Flush any contacted area with
water immediately .
- Improper use of a booster battery to
start a vehicle may cause an explosion.
- Vehicle batter ies generate explosive gas­
es. Keep sparks, flame and lighted c iga­
rettes away from batteries.
- Do not try to jump start any veh icle w ith
a low ac id level in the battery.
- The voltage of the booster battery must
also have a 12-Volt rating. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged bat­
tery. Use of batteries of diff erent voltage
or substantially different "Ah" rat ing
may cause an exp losion and personal in­
jury.
- Never charge a frozen battery. Gas trap­
ped in the ice may cause an explosion.
- Never charge or use a battery that has
been frozen . The battery case may have
be weakened.
- Use of batter ies of different voltage or
substantially different capacity (Ah) rat ­
ing may cause an exp losion and injury .
The ca pa city (Ah) of the booster battery
should not be lower than that of the dis­
charged battery.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS¢
page 209, Engine com­
partment.
(D Note
- App lying a higher voltage booster bat­
tery will cause expensive damage to sen­
sit ive electronic components, such as
control units, relays, rad io, etc .
- There must be no electrical contact be­
tween the vehicles as otherwise current
could already start to flow as soon as the
posit ive(+) terminals are connected. ..,. •
•

28 0 Index
Changing engine o il
Chass is 222
Unde rcoat ing . ........... .... .... . 205
Checking
Eng ine coolant leve l .... ... .. .. .. .. .
223
Checking tire pressure . ... .. .. .. .. .. . 237
Ch ild restra ints
Da nger of us ing ch ild restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . .
143
Where can I get additional information
about child restraints and their use? ..
184
Ch ild restra int system anchors . .. .. .. . 180
Ch ild safety .. .. . .......... .. .. .... . 166
Convertible locking retractor . . . . . . . . . 176
Important safety instructions for us ing
ch ild safety seats .. ..... .. .. .. .. .. .
169
Important th ings to know when dr iving
with ch ildren . ............. .. .... .
166
Ins tall ing a chi ld restraint using the
L A T C H system .. ... .... ... .. .. .... .
181
Lower anchorages ..... ... .. .. .... . 181
Mounti ng and releasing the ancho rage
hook .. .. .. ............. .. .. .. ...
181
Tether anchors . . . . . . . . . . . . . . . . . . . . 182
Tether straps . . . . . . . . . . . . . . . . . . . . . 182
Chil d safety seats .. ..... ... .. .. .... . 172
Booste r seats .. .. ..... ... .. .. .... . 174
Convertible child seats .... .. .. .... . 173
Convertible locking retractor .. .. ..... 176
Danger of us ing ch ild restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . .
143
H ow do I properly install a child safety
seat in my vehicle? ............ .. ...
169
Infant seats ............. .. .. .. .. . 172
Ins tall ing .. ... .......... .. .. .. .. . 176
LA T CH system .. .. ..... ... .. .. .... . 181
Safety instructions ..... ... .. .. .... . 169
Unused safety belts on the rear seat . . 17 1
Cigare tte lig hte r . . . . . . . . . . . . . . . . . . . . . 59
C leaning
A lcantara ® (synthetic suede) .. .. .. .. .
209
Eng ine compartment .......... .. ... 209
Exhaust tail p ipes ...... .... ... .. .. . 205
Fab rics and fabr ic coverings .. .. ..... 206
Instrument panel ....... .. .. .. .. .. . 207
In ter ior .. ... ............ .. .. .. .. . 206
Leather ..... .. .. ..... ... .. .. .... . 208
MMI disp lay/controls . ... .. .. .... .. . 206
Plastic and vinyl . .... .. ..... .... . .. 203
Plastic parts ..... .. ... ..... ... .. .. 207
Safety be lts ... .. ... .. ..... ... .. .. 209
Tr im strips .... .. ............. .... 203
Cleaning and p rotection .......... .... 2 00
Cl imate controls ... ..... ........... .. 67
Climate control system
Automatic recircu lation ......... .... .
70
synchroni zing .. .. ............. .. .. . 70
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Closing
Panoramic t ilting sunroof ........ ... .
41
Power w indows ... ............ .. .. . 40
Su n blind ..... .. .. ........... .... . 41
Closing/opening
at the lock cylinder . . . . . . . . . . . . . . . . . . 3 7
by remote control ..................
35
with the centra l locki ng switch ... .... . 36
with the conven ien ce key ........ .. .. . 36
Co ld tire inflation pressure . ........... 235
Coming home ..... ... .. ..... ... .. .. . 44
Compact spare tire . .. .. ...... ... .. .. 252
also refer to Spare ti re .......... .... 252
Compartments . . . . . . . . . . . . . . . . . . . . . . 60
Compass in the mirror . .. ..... ... .. .. .
51
Compliance . ...... .. .............. . 276
Consumer Information . . . . . . . . . . 132, 273
Contacting NHTSA . ... .......... .. .. 132
Convenience key
Indicator lights .. ... .. .. ... ..... .. .
75
Start ing engine (S TART E NGIN E STOP
button) ... .... ................... .
74
Stopping the eng ine (START ENG IN E
STOP b utton) .... .. .... .... ... .. .. .
75
Switching on ignition . .. ..... .... . .. . 74
unlocking/locking . .... ..... ... .. .. . 36
Co nvenience openi ng/clos ing ... .. .... . 40
Convertib le child safety seats ..... .... 173
Convertib le locking retractor
Activating ..... .. .. ... ..... ... .. ..
178
Deact ivat ing ... .. .. .... .... ... .. .. 178
Using to secure a child safety seat l.76, 178
Coolant system .. .. ... .......... .. .. 223
Cooling mode (automat ic cl imate co ntrol) 68
Cooling System
Expansion tank . .. ............. .. ..
223

28 2 Index
Eng ine
Compartment .. . ...... ... .. .. .... . 218
Coolant .. .. ... ... .... ... .. .. .... . 223
Hood .. .. ............... .. .. .... . 216
Starting . . . . . . . . . . . . . . . . . . . . . . 71, 74
Starting with jumper cables .. .. .. ... 263
Stopping . . . . . . . . . . . . . . . . . . . . . . 73, 75
Engine compartment Safety instructions . . . . . . . . . . . . . . . . . 216
Working the engine compartment 216
Eng ine coolant
Indicator light . .. ..... ... .. .. .... .. 18
E ng ine coolant system ............... 223
Adding coo lant ......... .. .. .. .. .. . 224
Chec king coolant leve l ..... .. .. .... . 223
Check ing the eng ine coolant leve l .. .. . 223
Radiator fan . .. .. ..... ... .. .. .... . 225
E ng ine coolant temperature
Tempe ratu re ga uge ................. 10
Eng ine data .... ........... ........ . 271
E ngine hood
C losing . . . . . . . . . . . . . . . . . . . . . . . . . . 216
How to release the hood ... .. .. .. .. . 216 Proper disposal of d
rained eng ine cool -
ant . ... .. .... .. .. ... ..... ... .. .. 224
Proper d isposal of drained eng ine
o il ... .... .... .. ............ 221,222
Recycling used engine oil ........ .... 221
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . 62
Unleaded fuel .. .. ... .. ....... ... .. 211
What shou ld I do with an o ld battery? . 230
EPC
refer to Electronic power control . . . . . . 20
E SC (Electronic Stab ilizat ion Con trol)
Warning/indicator lights ..... ... .. .. . 19
E thy l alcoho l (Fuel) . ... .......... .. .. 212
Event Data Recorder (EDR) ........ .... 185
E xhaus t tail pipes
Cleaning . ..... .. ... .. ..... .... . .. 205
E xpansion tank .. .. ................ . 223
Exterior lighting . .. ... .......... .. .. . 43
E xterior mirrors
Adjusting ..... .. .. ... ..... ... .. .. . 46
Dimm ing . ..... .. .. ... ..... ... .. .. . 47
Heating ... .... .. .. ... ..... ... .. .. . 46
E ng ine oil ... ... .......... .. .. .. .. . 218
F
Adding .. .. ............. ........ . 22 1
Addit ives ... ... .. ..... ... .. .. .... . 22 1
C hanging . .... .. ..... ... .. .. .... . 222
Check oil leve l ........... .... .... . 221
Consumpt ion ............ .. .. .. .. . 221
Indicator ligh t ............. .. .. 17,21
O il consumption ............... .... 220
O il grades .. .......... ........ ... . 218
O il level symbol .............. .. .... 21
Pr essu re malfunct ion ................ 17
Sensor defective . . . . . . . . . . . . . . . . . . . . 2 1
Specif ication and viscos ity . ... .... .. . 2 18
E ng ine speed limitat ion .......... ..... 21
Environment Break- in period ............... .... . 193
Cata lytic converter ............ .... . 194
Disposing of your vehicle battery .. .. . 230
Driving a t high speeds ......... .. ... 195
D riving to m inim ize pollution and no ise 195
F uel . .. ................. .. .. ..... 2 13
Fu el economy .......... .. .. .. .. .. . 195
L eaks under your veh icle ... .. .. .. .. . 216
L etting the vehicle stand and wa rm up . 195
Proper disposal of drained brake fluid . 226 F
an
Radiator
Fastening 225
Boos ter sea ts . . . . . . . . . . . . . . . . . . . . . 17 4
Co nvertib le child sa fe ty seats . . . . . . . . 173
Infan t seats
Flat tire 172
Chang ing . .. .. .. ............. .. .. 253
flexib le fuel . .... .. ... .......... .... 212
Floor mats . ..... .. .. .... .... ... .. .. 129
Fog lights/rear fog light(s) ...... ....... 43
Fo lding the rear seats .... ..... ... .. .. . 63
Foot peda ls . ....................... 129
For the sake of the environment
Gasoli ne fumes and the env ironme nt .. 213
L etting the engine warm up . . . . . . 71, 74
Ref ueling . .. .. .. ............. .. .. 213
Sav ing f uel by early u pshi fting . .. .... . 11
Front a irbags
Description . . . . . . . . . . . . . . . . . . . . . . . 146
How they work ........ ........... . 151
Frontal coll is ions and the laws of phys ics 135

284 Index
Important things to do before driving .. 124
Improperly worn safety belts ..... .. ... 140
Indicator lights ............ .. .. .. .. .. 13
Airbag system ............. .. .... . 153
Dynamic steering ...... ... .. .. .. .. . 189
PASSENGER AIR BAG OFF ........ .. . 153
also refer to Warn ing/ indicator l ights .. 13
Infant seats ... ............. .. .... . 172
I nstall ing child safety seats
Safety belts ..... ....... ... .. .... . 176
Installing the upper tethe r strap on the
anchorage . .. ................ ... .. . 183
Instruments Adjusting the lighting ..... .. .. .. .. .. 46
I nstruments and controls ............. 10
General illustration ........ ..... .. ... 8
I nter ior lights
Fr ont .. .. .. .. . .......... .. .. .. .. .. 46
Rear .. .. .... ............. .. .... .. 46
Intermittent (windshield wipers) . .. .... 49
l
Jump- starting 263
Jumper cables . ............... ..... . 264
K
Key ... .. .. .. ............. .... .... .. 33
Battery replacement . . . . . . . . . . . . . . . . 34
Check light . . . . . . . . . . . . . . . . . . . . . . . . 34
Emergency key . . . . . . . . . . . . . . . . . 33, 73
Ignition/engine on/off . . . . . . . . . . . . . . . 71
Key replacement ........... .. .... .. 33
Mechanical key . . . . . . . . . . . . . . . . . 33, 34
removing . . . . . . . . . . . . . . . . . . . . . . . . . 73
unlocking/locking . . . . . . . . . . . 3S, 36, 37
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . 92
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Knee airbags .... .......... .. .. .. .. . 157
Description ................. ..... . 157
How they work .............. ..... . 158
Important safety instructions . . . . . . . . 159
L
Lane Change Assistant
refer to side assist ......... ... .... . 105 LATCH .....
.... .. ............. .... 180
Description . ..... ................ . 181
Installing a ch ild restra int ........ ... 181
Location .. .... .. ............. .... 180
Mounting and releasing the anchorage
hook ........ ... ................ . 181
Launch Control Program ......... .. .. . 93
Leather .. .. .. .. .. ... .......... .. .. 207
Cleaning .. .... .. ............. .... 208
Leaving home ... .. ... .......... .... . 44
Left hand drive .... ................ .. 45
Lifting jack ..... .. .......... ...... . 256
Lifting vehicle ... .. ... .......... .... 267
Light adaptive light .... ................ .. 43
Coming/Leaving home ............... 44
Daytime running lights . . . . . . . . . . 43, 44
Exterior lighting . . . . . . . . . . . . . . . . 43, 44
Fog lights/rear fog lig ht(s) . . . . . . . . . . . 43
I nterior/reading .. ..... ........... .. 46
Low beam ..... .. ..... ........... .. 43
Rear fog lights . .. ................ .. 43
S ide marker lights ... .......... .. .. . 43
T rave l mode . .. .. ............. .. .. . 45
Light/rain sensor Headlights .. .. .. .......... ...... .. 43
Intermittent (w indshield w ipers) ..... . 49
Sensor defective .. ... .......... .. .. . 22
Lights Emergency flashers . . . . . . . . . . . . . . . . . 45
High beam ...... ................ .. 44
Turn signals . .. .. ..... ........... .. 44
Locking Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Locking/unlocking at the lock cylinder ................ .. 3 7
by remote control ............. ..... 35
with the centra l locking switch . .. .. .. . 36
with the convenience key ........ .. .. . 36
Low beams ..... .. ................ .. 43
Lower anchorage locator button ....... 181
Lower universal anchorage bars (Canada) 180
Lower universal anchorages (Canada) ... 180
Luggage Stow ing ...... .. .......... ...... . 130