2018 AUDI A5 COUPE check engine light

Check ing and F illing
edge of the reservoir and result in damage
to the vehicle .
- Do not get any bra ke fluid on the ve hicle
paint, beca use it will cor rode t he pa int .
Battery
General warnings about batteries
Because of the complex power s upply, a ll wor k
on batte ries such as disconnecting, rep laci ng,
etc. s hou ld
onl y be per formed by an auth or ized
Aud i dea ler o r autho rized Aud i Serv ice Facility
c;> .&. .
The te rm "vehicle battery " refers to the 12 Vo lt
b at tery i n your veh icle.
Detailed warnings for the vehicle battery:
®
Wear eye protection .
A
Battery acid is highly corrosive. Wear p ro-
tective gloves and eye p rotection.
@
F ire, sp arks , open flame and smo king a re
forbidden.
A
A highly explosive mixtu re of gases can
form when charging ba tte ries.
®
Keep c hildren away from battery acid and
batteries.
A WARNING
All work on the batte ry o r electrical system in
your vehicle can result in injuries, chemical
burns, accide nts o r burns. Because of this, a ll
wor k mu st be perf ormed
only by an au thor­
ize d Aud i de aler o r authorized Aud i Se rv ice
Facility .
A WARNING
California Proposit io n 65 Warning:
- B attery posts, termin als and re late d a cces­
so ries contai n lead and lead compounds,
chem ica ls known to the State of California
to cause cance r and rep roduct ive p roblems.
Wash hands after handling.
338
(D Note
P rotect the vehicle battery aga inst freezing if
the ve hicle wi ll be par ked for long periods of
time so t hat it is not destroyed by "freezing"
c;> page339.
@ For the sake of the environment
'8 Batteries conta in polluting s ubstances such
as sulfur ic acid and lead. Contact an aut ho r­
i zed Audi dealer or authorized A udi Service
Fac ility for more informat io n.
· Vehicle battery
The term "vehicle battery" refers to the 12 Volt
battery in your vehicle.
Not running the v ehicl e for long period s of
time
If you do not d rive your vehicle for severa l days o r
weeks, electrical equ ipment is gradually sca led
back or sw itched off . Th is reduces energy use and
ensures the vehicle will be ab le to s tart after long
per iods o f time
9 page 155. Some co nvenience
funct io ns, such as interio r lighting o r power seat
adjus tment, may not be av ail abl e un de r c ertain
c irc umstances. These convenience functions will
be available again once you switch the ignition on
and sta rt the engine .
E ven when ele ctrical eq uipment is swi tched off,
t h e eq uipment can still dra in the vehicle ba tte ry
i f the ve hicle is not driven for long periods of
time. Deep drai ning results in a chemica l reaction
that destroys the ins ide of the vehicle batte ry.
The vehicle battery must be cha rged every month
to reduce the risk of this happening
c;> page 339.
Contact an authorized Aud i dea ler or authorized
Audi Se rvice Fac il ity for more information.
Winter operation
Co ld weather places higher demands on the vehi­
cle battery. T his resu lts in reduced starting abili­
ty. Have the vehicle battery chec ked by an au­
thorized Aud i dea ler or authorized Audi Service
Fac ility befo re t he cold ti me of year.

Charging the vehicle battery
Fig. 280 Engine compartment : connectors for a charger
and jump start cables
Requirement: only use chargers with a maximum
charging voltage of 30 amps/14.8 Volts.
The
vehicle battery cables remain connected .
.,. Read the warnings¢ & in General warnings
about batteries on page 338
and ¢ ,& .
.,. Switch off the ignition and all electrical equip­
ment .
.,. Open the hood ¢ page 331 .
.,. Open the red cover on the positive terminal
¢ fig. 280 .
.,. Clamp the charger terminal clamps to the jump
start pins
according to the instructions . (pin
under the red cover= "positive", pin with hex­
agonal head= "negative").
.,. Insert the power cable for the charging device
into the socket and switch the device on.
.,. At the end of the charging process, switch the
charger off and pull the power cable out of the
socket .
.,. Remove the charger terminal clamps.
.,. Close the red cover on the positive terminal.
.,. Close the hood ¢ page 331 .
A WARNING
-A highly explosive mixture of gases can form
when charging batteries. Only charge the
vehicle battery in well-vent ilated areas.
-A drained vehicle battery can freeze at tem­
peratures around 32
QF (0 QC). A frozen or
thawed vehicle battery must not be charged
and must not be used anymore. The battery
housing can crack and battery acid can leak
out if ice forms, which increases the risk of
an explosion and chemical burns. Contact an
Checking and Filling
authorized Audi dealer or authorized Audi
Service Facility for more information.
- Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion.
@ Tips
- Only charge the vehicle battery through the
connections in the engine compartment.
- Read all of the manufacturer's instructions
for the charger before charging the vehicle
battery.
Windshield washer system
Fig. 281 E ngine compartmen t: was her fluid reservoi r cap
The windshield washer fluid reservoir O contains
the cleaning solution for the windshield and the
headlight washer
system*¢ page 332, fig. 276 .
The reservoir capacity can be found in
¢ page 388.
To reduce the risk of lime scale deposits on the
spray nozzles, use clean water with low amounts
of calcium. Always add window cleaner to the wa­
ter . When the outside temperatures are cold, an
anti -freezing agent should be added to the water
so that it does not freeze.
(D Note
-The concentration of ant i-freezing agent
must be adjusted to the vehicle operating
conditions in the respective climate . A con­
centration that is too high can lead to vehi-
cle damage.
- Never add radiator anti-freeze or other addi-
tives to the washer fluid.
.,..
339

<( a, .... N ,....
N .... 0 \0
3 a,
Emergency situations
General
This chapter is intended for trained emergency
crews and working personnel who have the nec­
essary tools and equipment to perform these
operations.
Starting by pushing or
towing
CD 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 con­
necting it to the battery of another vehicle.
If the engine should fail to start because of a dis­
charged or weak battery, the battery can be con­
nected to the battery of
another vehicle, using a
pair of jumper cables to start the engine.
Jumper cables
Use only jumper cables of sufficiently large cross
section
to carry the starter current safely. Refer
to the manufacturer's specifications.
Use only jumper cables with
insulated terminal
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 in­
jury. Follow the instructions below for safe
handling of your vehicle's battery.
-Always shield your eyes and avoid leaning
over the battery whenever possible.
-A dead battery can freeze at temperatures
around 32 °F (0 °C). If the vehicle battery is
frozen, you must thaw it before connecting
the jump start cables. If you do not, this in-
Emergency situations
creases the risk of an explosion and chemi­
cal burns. After jump starting the vehicle,
drive to an authorized Audi dealer or author­ ized Audi Service Facility immediately to
have the vehicle battery checked.
- 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 batteries generate explosive gases.
Keep sparks, flame and lighted cigarettes
away from batteries.
- Do not try to jump start any vehicle with a
low acid 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 battery. Use of
batteries of different voltage or substantial­
ly different
"A h" rating may cause an explo­
sion and personal injury.
- Never charge a frozen battery. Gas trapped
in the ice may cause an explosion.
- Never charge or use a battery that has been
frozen . The battery case may have be weak­
ened.
- Use of batteries of different voltage or sub­
stantially different capacity (Ah) rating may
cause an explosion and injury. The capacity (Ah) of the booster battery should not be
lower than that of the discharged battery.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS
qpage 330.
CD Note
- Applying a higher voltage booster battery
will cause expensive damage to sensitive electronic components, such as control
units, relays, radio, etc.
- There must be no electrical contact between
the vehicles as otherwise current could al­
ready start to flow as soon as the positive
(+) terminals are connected.
381

<( a, .... N ,....
N .... 0 \0
3 a,
@ For the sake of the environment
-Changing the engine settings wi ll adversely
affect emission leve ls. Th is is detrimental to
the env ironment and increases fuel con­
sumption.
- Always observe environmental regu lations
when disposing of old engine o il, used brake
flu id, d irty engine coolant, spent batteries
or worn out tires .
- Undeployed airbag modules and pretension­
ers might be classified as Perchlorate Mate­
rial -spec ial handling may apply, see
www .dtsc.ca.gov/hazardouswaste/perchlo­
rat e. When the vehicle or pa rts of the re­
straint system including airbag modules
safety be lts with pretens ioners are scrap­
ped, a ll applicab le laws and regulations
must be observed. Your a uthorized 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 on authori zed Audi dealer before
purchasing accessories.
Audi vehicles that are constructed w ith advanced
materials like Steel/Aluminum (Hybrid construc­
tion), Aluminum (Audi Space Frame), and/or Alu­ minum/Carbon Fiber (Ultra Advanced Light
We ight Materials) are as unique as the ir drivers .
Therefore, the ava ilability of certain parts needed
for repair , restoration , or reconstruction wi ll be
restricted , or parts will be unava ilable, if the ve­
hicle is not repaired at an a uthorized Audi colli­
sion repair facility. This includes but is not limit­
ed to structura l parts which require specialized
training and equipment to restore their crash ­
worthiness back to the original NHTSA and IIHS performance.
Your vehicle incorporates the latest safety design
features ensuring a high standard of active and
passive safety.
Consumer Inf ormation
This safety could be compromised by non-ap ­
proved changes to the vehicle. For this reason, if
parts have to be rep laced, please observe the fol­
lowing points when install ing additional accesso­
ries:
Approved Audi accessories and genuine Audi parts are avai lab le from authorized Aud i dea lers.
T hese dea le rs also have the necessa ry facilities,
tools and trained specialists to install the parts
and accessories properly .
A WARNING
-Using the wrong spare parts or using non-ap-
proved accessories can cause damage to the
vehicle and serious personal injury.
- Use on ly accessories expressly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially designed to be used on your vehicle.
- Do not use license plate brackets in the
front area that are different from the one
installed at the factory, or add additional
li­
cense plate brackets.
- Never install accessor ies such as telephone
cradles or beverage holders on airbag covers
or w ith in the airbag deployment zones. Do­
ing so will increase the risk of injury if a ir­
bags are triggered in an accident!
- Before you check anyth ing in the engine
compartment, always read and heed all
WARNINGS
9poge 330.
(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 per­
formed according to specified methods, this
can result in seve re damage to your vehi­
cle's engine and body (such as corrosion)
and adversely affect your vehicle's warranty.
- If emergency repa irs must be performed
elsewhere, have the vehicle exam ined by an
authorized Audi dealer as soon as possib le .
- The manufacturer cannot be held liable for
damage which occurs due to failure to com­
ply with these stipulations .
391

Index
Audi p re sense . . . . . . . . . . . . . . . . . . . . . . . 125
M essages . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Sett ings . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Aud i Serv ice Repair Ma nuals and Lite rature 389
Aud i side assist . . . . . . . . . . . . . . . . . . . . . . . 133
Aud i smartphone interface . . . . . . . . . 249, 253
Aud i virt ua l coc kp it
refer to Instr ume nt cl uster . . . . . . . . . . . . . 10
AUTO Automatic headlights . . . . . . . . . . . . . . . . . 61
Auto Lock (centra l loc kin g system) . . . . . . . . 37
Automatic belt ret ractor . . . . . . . . . . . . . . . 27 2
Automatic climate control . . . . . . . . . . . . . . . 81
Aud i drive select. . . . . . . . . . . . . . . . . . . . . 139
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Automatic climate control system Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Automatic power top
refer to Power top . . . . . . . . . . . . . . . . . . . . 5 4
Automatic transm ission . . . . . . . . . . . . . . . . . 96
E me rgency prog ram . . . . . . . . . . . . . . . . . 10 1
H ill descent contro l . . . . . . . . . . . . . . . . . . . 99
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . 100
La unch cont ro l prog ram . . . . . . . . . . . . . . 1 00
M anual s hifting . . . . . . . . . . . . . . . . . . . . . . 99
Parking lock emergency release . . . . . . . . 102
Selector lever pos itions . . . . . . . . . . . . . . . . 96
Autom atic wipe/wash system . . . . . . . . . . . . 67
Auto Safety Hotline . . . . . . . . . . . . . . . . . . . 266
AUTO (button) Automatic c limate control system . . . . . . . 83
Auxiliary heater (a utomat ic cl ima te control) 85
AUX input . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Ave rage cons umption . . . . . . . . . . . . . . . . . . . 1 7
Average speed . . . . . . . . . . . . . . . . . . . . . . . . 17
B
BACK button 158
Balance (sound) . . . . . . . . . . . . . . . . . . . . . . 255
B ass (sound) . . . . . . . . . . . . . . . . . . . . . . . . . 255
Battery Jump starting . . . . . . . . . . . . . . . . . . . . . . . 381
also refer to Veh icle battery . . . . . . . . . . . 338
Before driving . . . . . . . . . . . . . . . . . . . . . . . . 258
B el t positioners . . . . . . . . . . . . . . . . . . . . . . 27 2
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . . 27S
394
Blended gasoline . . . . . . . . . . . . . . . . . . . . . 322
B lowe r (automat ic cl imate contro l system) . 83
B luetooth
Audio player . . . . . . . . . . . . . . . . . . . . . . . . 233
Connect ing a cell phone . . . . . . . . . . . . . . 178
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Boos te r seats . . . . . . . . . . . . . . . . . . . . . . . . 312
Boost pressure ind icator . . . . . . . . . . . . . . . . 11
B rake fl uid
Checking the brake fluid level . . . . . . . . . . 337
B rakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
B rake ass ist . . . . . . . . . . . . . . . . . . . . . . . . 151
B rake flu id . . . . . . . . . . . . . . . . . . . . . . . . . 33 7
E lectromechanical parking brake . . . . . . . . 94
Emergency braking function . . . . . . . . . . . . 94
New brake pads . . . . . . . . . . . . . . . . . . . . . 153
Worn brake pads . . . . . . . . . . . . . . . . . . . . . 33
B re aking in
New brake pads . . . . . . . . . . . . . . . . . . . . . 153
New engine . . . . . . . . . . . . . . . . . . . . . . . . . 86
New tires . . . . . . . . . . . . . . . . . . . . . . . . . . 348
B rowser
refer to M edi a cente r . . . . . . . . . . . . . . . . . 2 40
Bu lbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Buttons Contro l panel (MMI) . . . . . . . . . . . . . . . . . 158
Mult ifunct ion steer ing whee l . . . . . . . . 13, 16
Programming (multifunction steering
whee l) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
C
Cable (USB adapter/AUX connector cable) 236
Cali forn ia Propos ition 65 W arning . . . . . . . 331
Battery specific . . . . . . . . . . . . . . . . . . . . . 338
Call list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Call options . . . . . . . . . . . . . . . . . . . . . . . . . . 188
C apaci ties
AdB lue . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Washer fluid reservoir . . . . . . . . . . . . . . . . 388
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Cargo area
refer to Loading the luggage compart -
ment ........ ... ... ............. ... 263
Catalytic converter . . . . . . . . . . . . . . . . . . . . 329

<( a, .... N ..... N .... 0 \0
3 a,
Emergency starting . . . . . . . . . . . . . . . . . . . 381
Emissions control system . . . . . . . . . . . . . . 329
Energy management . . . . . . . . . . . . . . . . . . 155
E ng ine
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Start/Stop system . . . . . . . . . . . . . . . . . . . . 91
Starting/stopping . . . . . . . . . . . . . . . . . . . . 89
Starting with jumper cables . . . . . . . . . . . 381
E ng ine compartment . . . . . . . . . . . . . . . . . . 330
Opening and closing the hood . . . . . . . . . . 331
Safety precautions . . . . . . . . . . . . . . . . . . . 330
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Checking the oil level . . . . . . . . . . . . . . . . . 334
Consumption . . . . . . . . . . . . . . . . . . . . . . . 334
Dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Oil consumption . . . . . . . . . . . . . . . . . . . . . 333
Specification and viscosity . . . . . . . . . . . . . 332
Temperature display . . . . . . . . . . . . . . . . . . 11
Engine sound . . . . . . . . . . . . . . . . . . . . . . . . 139
Engine Start/Stop mode
refer to Start/Stop system . . . . . . . . . . . . . 93
Entering character s/numbers ( speller) . . . . 165
Entering letters (speller) . . . . . . . . . . . . . . . 165
Entertainment sliding menu . . . . . . . . . . . . 163
E ntry/exit lighting . . . . . . . . . . . . . . . . . . . . . 63
E ntry assistance
refer to Seats . . . . . . . . . . . . . . . . . . . . . 71, 72
Environment Proper disposal of drained engine oil . . . . 335
Unleaded fuel . . . . . . . . . . . . . . . . . . . . . . . 322
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Sport mode . . . . . . . . . . . . . . . . . . . . . . . . 152
Evasive steering support . . . . . . . . . . . . . . . 126
Event Data Recorder (EDR) . . . . . . . . . . . . . 156
Expanded view . . . . . . . . . . . . . . . . . . . . . . . . 15
Exterior lighting . . . . . . . . . . . . . . . . . . . . . . . 61
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . 65
External voice operation . . . . . . . . . . . . . . . . 176
F
Factory default settings
Multi Media Interface . . . . . . . . . . . . . . . . 252
Fader (sound) . . . . . . . . . . . . . . . . . . . . . . . . 255
Index
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . . . 312
Convertible child safety seats . . . . . . . . . . 310
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 308
Fast forwarding/rewind ing (audio/video
file) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Fast forwarding (audio/video file) . . . . . . . . 239
Fast route 214
Favorites Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 209
Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . 183
File formats (med ia drives) . . . . . . . . . . . . . 245
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 263
For the sake of the environment Environmentally-friendly driving . . . . . . . . 86
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Leaks..... .... .. .. ................. 331
Warming up the engine . . . . . . . . . . . . . . . . 89
Free text search . . . . . . . . . . . . . . . . . . . . . . 167
Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Nav igation . . . . . . . . . . . . . . . . . . . . . . . . . 208
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . 187
Freeze protection
Coo lant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Frequency band . . . . . . . . . . . . . . . . . . 225, 228
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . . 281
How they work . . . . . . . . . . . . . . . . . . . . . . 287
Frontal collisions and the laws of physics . . 269
Front passenger's door emergency locking . . 42
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Child restraints in the front seat . . . . . . . . 278
also refer to Seats . . . . . . . . . . . . . . . . . 71 , 72
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
B lended gasoline . . . . . . . . . . . . . . . . . . . . 322
Current consumption . . . . . . . . . . . . . . . . . . 17
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Fuel filler neck . . . . . . . . . . . . . . . . . . . . . . 324
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . 10, 12
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 388
Gasoli ne . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Gasoline addit ives . . . . . . . . . . . . . . . . . . . 323
397