2015 AUDI A5 CABRIOLET coolant temperature

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today's automobiles, have steadily reduced the
scope of maintenance and repairs which can be
carried out by vehicle owners .
Also , s afety a nd
en viro nm enta l
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transmission parts which an owner can
perform.
Maintenance, adjustments and repa irs usua lly re­
qu ire spec ial tools, testing devices and other
equ ipment available to specially trained work­
shop perso nnel in order to assure proper per­
formance, reliab ility and safety of the vehicle and
its many systems.
Improper ma intenance, adjustments and repairs
can impair the operation and reliability of your
vehicle and even void your vehicle warranty .
Therefore, proof of se rv icing in accordance with
the m aintenance schedule may be a condi tion for
upho ld ing a possib le warranty cla im made w ith in
the warranty period .
Above all, operational safety can be adversely af­
fected, creating unnecessary r isks fo r you and
your passengers.
I f in doubt about any servicing, have it done by
your author ized Audi dealer or any prope rly
equ ipped and qua lified workshop. We st rongly
urge you to give your authorized Audi dealer the
opport unity to perform all sched uled mainte­
nance and necessary repairs. Your dealer has the
fac ilities, origina l parts and trained specia lists to
keep yo ur vehicle runn ing properly.
P e rforming lim it e d ma inten anc e y ours elf
The fo llowing pages describe a limited number of
proced ures which can be performed on yo ur vehi­
cle with ordinary tools, should the need arise and
trained personne l be unavailable. Before per­
forming any of these procedures, always thor­
oughly read all of the applicable text and careful­
ly follow the instructions g iven . Always rigorously
observe the
W ARNINGS prov ided .
Before you check an ything in the engine com ­
partm ent, always r ead and h eed all WARNING S
c:> .&. and c:> .&. in Working in the engine comport­
ment on page 195.
C o nsum er information
A WARNING
- Ser ious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs.
- Always be extremely careful when work ing
on the vehicle. Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never ris k personal injury.
- Do not attempt any of the maintenance,
checks or repairs descr ibed on the following
pages if you are not fully familia r wi th these
or other procedures w ith respect to the vehi­
cle, or a re unce rtain how to proceed .
- Do not do any work without the proper tools
a nd eq uipment. Have the necessary work
done by your authorized Audi dealer or any
properly equipped and qualified workshop.
- The engine compa rtment o f any motor vehi­
cle is a potentially hazardous area. Neve r
reach into the area around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
g ine is off and the ign ition key has been re­
moved. The rad iator fan switches on auto­
mat ically when the coo lant reaches a certain
temperature and will continue to run unt il
the coolant temperature d rops.
- Always remove the ign ition key befo re any­
one gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work underneath
the vehicle. The jack supplied w ith the vehi ­
cle is no t adequ ate for this purpose and
could collapse caus ing serious personal in­
jury.
- If you m ust wor k underneath t he vehicle
with the wheels on the ground, a lways make
sure the vehicle is on level ground, that the
wheels are a lways secure ly blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic transmiss ion) is in "P"
(Park position) and the park brake is firmly
applied.
249

Index
A
A/C (automatic climate control) . . . . . . . . . . 69
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Active lane assist
Cleaning the camera area . . . . . . . . . . . . . 185
Active ro llover protection system . . . . . . . . 121
Retracting rollover protection . . . . . . . . . . 122
Adapt ive cruise control . . . . . . . . . . . . . . . . . . 90
Clean ing the sensor . . . . . . . . . . . . . . . . . . 185
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Request for driver intervention . . . . . . . . . . 95
Setting the driving program . . . . . . . . . . . . 95
Adapt ive dampers . . . . . . . . . . . . . . . . . . . . . 103
Adaptive light . . . . . . . . . . . . . . . . . . . . . . . . . SO
Adapt ive Light (defective) . . . . . . . . . . . . . . . 21
Adding Engine coolant .. .......... .... ... .. .
Engine oil .. ... ............... ... .. .
W indshield washer fluid ....... .. .. .. .
Additional accessories
Additives Engine oil ...... .............. ... .. .
Adjustable steer ing column ...... .. .. .. . .
Adjusting 202
199
208
250
199 73
Air distribu tion (automa tic climate control) 70
Instrument illum inat ion . . . . . . . . . . . . . . . 53
Steer ing column . . . . . . . . . . . . . . . . . . . . . . 73
Temperature (automatic climate control) . 70
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Warning/indicator lights . . . . . . . . . . . . . . . 19
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . 150
Advanced Airbag-System . . . . . . . . . . . . . . 136
Advanced Airbag System components . . . 138
Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Child restraints . . . . . . . . . . . . . . . . . . . . . . 154
Components (front airbags) . . . . . . . . . . . 138
Danger of fitting a child safety seat on the
front passenger seat . . . . . . . . . . . . . . . . . 133
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Fr ont airbags . . . . . . . . . . . . . . . . . . . 136, 13 7
How do the front airbags work? . . . . . . . . 140
How many airbags does my vehicle have? 138
How the Advanced Airbag System compo-
nents work together . . . . . . . . . . . . . . . . . 140
Important inform ation . . . . . . . . . . . . . . . 132
252
Important safety instructions on the knee
airbag system . . . . . . . . . . . . . . . . . . . . . . . 148
Ind icator light . . . . . . . . . . . . . . . . . . . . . . 142
Knee airbags. . . . . . . . . . . . . . . . . . . . . . . . 146
Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 142
PASSENGER AIR BAG O FF light . . . . . . . . . 142
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Safety instructions . . . . . . . . . . . . . . . . . . . 144
Side a irbags . . . . . . . . . . . . . . . . . . . . . . . . 148
Weight-sensing mat . . . . . . . . . . . . . . . . . 153
When must the system be inspected? . . . 142
all-wheel drive .......... .......... ... 174
All season tires . . . . . . . . . . . . . . . . . . . . . . . 224
Alternator
refer to Generator . . . . . . . . . . . . . . . . . . . . 16
Anti -freeze
refer to Engine coolant system . . . . . . . . . 200
Anti- lock braking system
Warning/indicator lights . . . . . . . . . . . . 18, 19
Anti- Lock Braking System . . . . . . . . . . . . . . 170
Anti-slip regulation Warning/indicator lights . . . . . . . . . . . . . . . 18
Anti-Slip Regulation . . . . . . . . . . . . . . . . . . . 170
Ant i-theft alarm system . . . . . . . . . . . . . . . . . 29
Anti -theft systems
Electronic immob ilizer . . . . . . . . . . . . . . . . . 35
Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Audi braking guard
refer to braking guard . . . . . . . . . . . . . . . . . 90
Audi drive select . . . . . . . . . . . . . . . . . . . . . . 103
Adaptive dampers . . . . . . . . . . . . . . . . . . . 103
Descrip tion . . . . . . . . . . . . . . . . . . . . . . . . . 103
Dynam ic steering . . . . . . . . . . . . . . . . . . . . 103
Setting the driving mode . . . . . . . . . . . . . . 104
Sport d ifferential . . . . . . . . . . . . . . . . . . . . 103
Audi Service Repai r Manuals and Lite ratu re 248
AUTO Automatic climate control . . . . . . . . . . . . . . 70
Automatic headlights . . . . . . . . . . . . . . . . . 50
Automat ic belt retractor . . . . . . . . . . . . . . . 128
Automatic climate control Air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Automatic power top . . . . . . . . . . . . . . . . . . . 42
Automat ic Shift Lock (ASL) . . . . . . . . . . . . . . 84

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Determining correct load limit . . . . . . . . . . 223
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Digital compass . . . . . . . . . . . . . . . . . . . . . . . 57
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Dimming the rearview mirror . . . . . . . . . . . . 54
Doors emergency locking . . . . . . . . . . . . . . . . . . . . 34
Driver information system . . . . . . . . . . . . . . . 23
Open doo r or front lid warning . . . . . . . . . . 23
Outside temperature display . . . . . . . . . . . . 23
Sound system display . . . . . . . . . . . . . . . . . 23
Driver seat
refer to Seating pos ition . . . . . . . . . . . . . . 114
Driving economically . . . . . . . . . . . . . . . . . . 179
Dr iving safely . . . . . . . . . . . . . . . . . . . . . . . . 113
Driving through water . . . . . . . . . . . . . . . . . 177
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . .
24
Dust filter
refer to Pollutant filte r (automatic A/C sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Dynamic steering .......... ... 103,170 ,174
E
E85 (Fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Easy entry function . . . . . . . . . . . . . . . . . . . . . 61
E fficiency program . . . . . . . . . . . . . . . . . . . . . 26
Fuel economy messages . . . . . . . . . . . . . . . 26
M emory levels . . . . . . . . . . . . . . . . . . . . . . . 24
Other equipment . . . . . . . . . . . . . . . . . . . . . 26
Electro-mechanical power assist . . . . . . . . . 17 4
Electromechanical parking brake
Emergency braking . . . . . . . . . . . . . . . . . . . 79
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 77
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Releasing and clos ing . . . . . . . . . . . . . . . . . 77
Starting assist . . . . . . . . . . . . . . . . . . . . . . . 78
Starting from rest . . . . . . . . . . . . . . . . . . . . 78
Starting off with a trai ler. . . . . . . . . . . . . . . 79
Warning/indicator lights . . . . . . . . . . . . . . . 16
E lect ronic different ial lock
Warn ing/ indicator lights . . . . . . . . . . . . . . . 18
Electronic Differential Lock . . . . . . . . . . . . . 170
Electronic differential lock (EDL)
Warning/indicator lights . . . . . . . . . . . . . . . 19
E lectronic immobilizer . . . . . . . . . . . . . . . 12, 35
Index
Electronic pow er control
(EPC) warning/indicator light . . . . . . . . . . . 20
El ectronic speed limiter . . . . . . . . . . . . . . . . . 28
Electronic stabilizat ion control
Sport mode . . . . . . . . . . . . . . . . . . . . . . . . 171
E lectronic Stabilization Contro l . . . . . . . . . . 170
Electronic Stabilization Control (ESC)
Warning/ind icator lights . . . . . . . . . . . . . . . 18
Emergency actuation
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Ignition key . . . . . . . . . . . . . . . . . . . . . . . . . 32
Emergency braking . . . . . . . . . . . . . . . . . . . . . 79
Emergency flasher . . . . . . . . . . . . . . . . . . . . . 52
Warning/ind icator lights . . . . . . . . . . . . . . . 22
Emergency key . . . . . . . . . . . . . . . . . . . . . . . . 30
Starting engine . . . . . . . . . . . . . . . . . . . . . . 74
Emergency operation
Emergency braking funct ion (parking brake) .7.9
Luggage compartment lid . . . . . . . . . . . . . . 36
Power top . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Emergency starting . . . . . . . . . . . . . . . . . . . 240
Energy management . . . . . . . . . . . . . . . . . . 17S
Battery power . . . . . . . . . . . . . . . . . . . . . . . 16
Dr ive r notification . . . . . . . . . . . . . . . . . . . . 16
Engine Compartment .. .. ................ ... 197
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Starting . . . . . . . . . . . . . . . . . . . . . . . . . 73, 75
Starting with jumper cables . . . . . . . . . . . 240
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . 75 , 76
Engine compartment . . . . . . . . . . . . . . . . . . 197
Safety instructions . . . . . . . . . . . . . . . . . . . 195
Working the eng ine compartment . . . . . . 195
Engine coolant Indicator light . . . . . . . . . . . . . . . . . . . . . . . 17
Engine coolant system . . . . . . . . . . . . . . . . . 200
Adding coolant . . . . . . . . . . . . . . . . . . . . . . 202
Checking coolant level . . . . . . . . . . . . . . . . 201
Checking the engine coolant level . . . . . . . 201
Radiator fan . . . . . . . . . . . . . . . . . . . . . . . . 203
Engine coolant temperature
Temperature gauge . . . . . . . . . . . . . . . . . . . 10
Eng ine hood
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19S
How to release the hood . . . . . . . . . . . . . . 195
255

Index
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Addit ives . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Check oil level . . . . . . . . . . . . . . . . . . . . . . 199
Consumption . . . . . . . . . . . . . . . . . . . . . . . 199
Indicator light . . . . . . . . . . . . . . . . . . . . 17, 20
Oi l consumption . . . . . . . . . . . . . . . . . . . . . 198
Pressure malfunct ion . . . . . . . . . . . . . . . . . . 17
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 20
Specification and viscosity . . . . . . . . . . . . . 197
Engine speed limitation . . . . . . . . . . . . . . . . . 20
Environment Catalytic converter . . . . . . . . . . . . . . . . . . . 178
Disposing of your vehicle battery . . . . . . . 207
Driving at high speeds . . . . . . . . . . . . . . . . 179
Fuel ..... .. .... ... ............... .. 192
Leaks under your vehicle . . . . . . . . . . . . . . 195
L ett ing the veh icle stand and warm up . . . 179
Proper disposal of drained brake fluid . . . 204
Prop er disposal of drained engine coolant 202
Prop er disposal of drained engine oil 199, 200
R ecycling used engine oil. . . . . . . . . . . . . . 199
Unleaded fuel . . . . . . . . . . . . . . . . . . . . . . . 190
What should I do with an old battery? . . . 207
EPC
refer to Electron ic power control . . . . . . . . 20
Ethyl alcohol (Fuel) . . . . . . . . . . . . . . . . . . . . 191
E vent Data Recorder ( EDR) . . . . . . . . . . . . . . 169
Expansion tank . . . . . . . . . . . . . . . . . . . . . . . 201
E xterior lighting . . . . . . . . . . . . . . . . . . . . . . . 50
Exterior mirrors Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
He ating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
F
Fan
Radiator 203
F astening
Booster seats . . . . . . . . . . . . . . . . . . . . . . . 160
Convertible child safety seats . . . . . . . . . . 158
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 157
flexible fuel .. .. ............... .. .. ... 191
Floor mats. .. ... ............... ... .. . 118
Fog lights/rear fog light(s) . . . . . . . . . . . . . . . 50
Folding the rear seats . . . . . . . . . . . . . . . . . . .
66
256
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Fo r the sake of the environment
Environm entally-fr iendly driving . . . . . . . 179
Gasoline fumes and the environment . . . . 192
Letting the engine warm up . . . . . . . . . 73 , 75
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Saving fu el by early upshifting . . . . . . . . . . 11
Front airbags Description . . . . . . . . . . . . . . . . . . . . . . . . . 136
How they work . . . . . . . . . . . . . . . . . . . . . . 140
Frontal coll is ions and the laws of physics . . 125
Front passenger's door emergency locking . . 34
Front seats Adjust ing . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Child restraints in the front seat . . . . . . . . 133
Upp er cabin heating . . . . . . . . . . . . . . . . . . . 71
Fuel Additives.. .. .... .. ............... .. 190
B lended gasoline . . . . . . . . . . . . . . . . . . . . 190
Consumpt ion . . . . . . . . . . . . . . . . . . . . . . . . 24
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline additives . . . . . . . . . . . . . . . . . . . 192
Low fuel level symbol . . . . . . . . . . . . . . . . . 20
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 190
Recommendation . . . . . . . . . . . . . . . . . . . . 190
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Saving fuel . . . . . . . . . . . . . . . . . . . . . . . . . 179
T ank capac ity . . . . . . . . . . . . . . . . . . . . . . . 246
Tank system . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unlock ing the fuel filler flap by hand . . . . 194
Fuel economy messages (efficiency program)
26
Fuel filler flap
Unlo cking the fuel filler flap by hand .... 194
Fuses Assignment ..... .. .. ....... 236,237,238
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 236
G
Garage door opener (Homelink ) . . . . . . . . . . 38
Gas discharge lamps . . . . . . . . . . . . . . . . . . . 239
Gauges Engine coolant temperature . . . . . . . . . . . . 10
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 11
General illustration Instruments and controls . . . . . . . . . . . . . . . 8