2010 AUDI A5 CABRIOLET differential

Instruments and warning /indicator lights
Anti-lock brake system (ABS) -- (USA models) /:' (Canada models)
This warning/indicator light monitors the ABS and the
electronic differential lock (EDL).
T he warning/ind icator light will come on for a few seconds wh en the
ign it ion is sw itched on . The light w ill go out after an automatic check
sequence is completed .
There is a malfun ction in the ABS when:
• T he warning/ind icator light does not illuminate when you switch
on the ig nition.
• T he warn ing/ind icato r lig ht does not go o ut a fter a few seconds .
• The warning/ind icator light illuminates while dr iving.
The brake syst em will still re spond even without the a ssistan ce of
th e AB S s ystem . See your authori zed Audi d ealer as s oon as
possible t o restore full braking performance.
For more informat ion
regarding the ABS=>
page 245.
The ABS warning light and the brake warning light come on
together. The ABS will no t work and you will noti ce a change in
brak ing response and performance.
Malfunction in the brake system
If the brake wa rning light => page 17 and the ABS warning illuminate
together there may be a malfu nction in the ABS, and the re may also
be a malfunction in the b rake system itself =>
& -
In the event of a malfunction in the brake system the wa rning/indi ­
cator light
BRAKE (USA models)/ ((D) (Canada models) in the instrument
cluster flashes . By pressing the
!SE T) button, you can bring up a
dr iver message w hic h explains the malfunct io n in more detail. Please
note =>
page 28. Malfunction in the electronic differential lock (EDL
)
The EDL works toge ther with the ABS . The ABS warning light will
come on if there is a malfunction in the ED L system=>
page 242 . See
your authorized Audi dea ler as soon as possible.
& WARNING
• If the , ~ .... (USA model s)/ :J (Canada models) warning light
does not go out, or if it comes on while driving, the ABS s ystem is
not working properly . The vehicle can then be s topped only with
the standard brake s (w ithout ABS ). You will not have the p rotec­
tion ABS p ro vi des . Cont act your auth orized Audi dealer as s oon as
poss ible.
• USA model s: If the BRAKE warning light and the ~ warning
light come on together, the rear wheel s could lock up first under
ha rd braking . Rear wheel lock-up can caus e lo ss of v ehicle control
and an accident . Hav e your vehicl e repaired immediately by your
author ized Aud i dealer o r a qualified workshop . Drive slowly and
avoid sudden, hard brake application s.
• Canada model s: If the br ake warning light (CD) and the ABS
wa rning l ight 9 come on together , the rear wheels could lock up
first under hard b raking. Rear wheel lock -up can cause loss of
vehicle contr ol and an accident. Have your v ehicle repair ed imme ­
di ately b y your authorized Audi dealer or a qual ified workshop.
Drive slowly and avoid sudd en, hard brake applicati ons. •
Electromechanical parking brake
~E (USA models) /(®) (Canada models)
The warning/indicator light monitors the electromechan­
ical parking brake .
With the parking brake app lied and the ign ition turned on, the
wa rni ng/indicator light i lluminates. Afte r the ignition has been
tur ned off, the warning/ind icator light continues to illum inate for
about 30 seconds. If the par king b rak e is applied with the ignition _,,,,

Intelligent technology
--------------------------------------------------' "---.L==--
The system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP will also shut down.
How the system works
The Anti-Lock Brake System (ABS), Electronic Differential Lock (EDL)
and the Anti-Slip Regulation System (ASR) are integ rated in the elec­
tronic stabilization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­
ment data provided by high performance sensors . The rotational
speed of the vehicle about its vertical axis, vehicle acceleration in the
fore-and-aft and lateral directions, the brake pressure, and the
steering angle are all measured .
Th e direction in which the driver wishes to travel is determined with
the aid of the steering angle and vehicle speed and is con tinually
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehicle starts hydroplaning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the problem.
The vehicle is then stabilized by the forces acting on the whee l during
brak ing.
If the vehicle is oversteering (the vehicle turns too sharply
and the rear wheels slide toward the outside of a curve), the brakes
are mainly applied on the wheel that is on the outside of the curve. In
the case of a vehicle that is
understeering (the vehicle does not turn
sharply enough and pushes out of a curve), the brakes are applied as
needed on the wheel that is on the inside of the curve or additionally
on the other wheels. An acoustic signal indicates when ESP brake
application cuts in=> &.
The system operates across the entire speed range in combination
with the ABS system =>
page 245. If the Anti- Lock Brake System
(ABS) malfunctions, the ESP will be out of action as well.
Activating
When you turn on the engine, ESP will automatically be activated and
w ill perform a self-test. As soon as the test is comp leted, the system
is in normal operating mode.
Controls and equip­
ment Safety first Vehicle operation
You can activate a
deactivated ESP or deactivated ESP/ ASR if required
by pressing the =>
page 240, fig. 214 => page 240, fig. 213 button.
When they are activated, the message
ESP/ ASR on appears briefly
in the display.
Deactivating
The ESP should normally be activated all the time. If necessary, you
can deactivate Anti-Slip Regulation (ASR) or the Electron ic Stabiliza ­
tion Program (ESP) by press ing the button =>
page 240, fig. 214 .
• Deactivating ASR: Tap the button . In certain exceptional s itua­
t ions (e.g. driving with tire chains), the Anti-Slip Regu lation (ASR) can
be deact ivated =>
page 242. The message ASR off appears in the
display as we ll.
• Deactivating ESP/ASR Press the button for more than 3 seconds .
With the ESP/ASR deactivated, the ESP check light comes on, see
=>
page 14. The message ESP switched off appea rs in the display as
well.
& WARNING
The Electronic Stabilization Program is nevertheless subject to the
laws of physics. It is particularly important to pay attention to
this fact on wet and slippery roads. It is therefore important that
you always adapt your driving to the condition of the road and
traffic conditions . Do not allow the increased safety provided by
the Electronic Stabilization Program system to lull you into
accepting additional safety risks.
u
Vehicle care Do-it-yourself service Technical data

Intelligent t echnology
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Electronic differential lock (EDL)
The elec tronic differen tial lock monitors the rotational
speed of the drive wheels.
G en era l not es
The electronic differentia l lock (EDL) helps the ca r to sta rt moving,
accelerate and climb a gradient on surfaces provid ing poor or almost
no grip . W ithout ED L, this would be d iff icu lt, if not impossible.
How the sy stem works
The EDL operates automatically. It mo nitors the rota tional speed of
wheels with the help of the ABS sensors=>
page 245. If a not iceab le
slip is detected at the wheels (e.g. on slippery g round on one side),
the spinn ing wheels are braked and power is transferred to the other
wheels . This is done up to a speed of about 60 mph (100 km/h).
No ises from the brake system signal that wheel sp in is being
controlled.
Driv ing off
When d riving off, always be s ure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface with
less grip, apply
plenty of throttle until the car starts to move.
O verheating of bra kes
To prevent the disc b rake of the bra ked wheel from ove rhea ting if
subjected to excessive loads on this wheel, the EDL cuts out tempo­
ra rily. The vehicle remains operat io nal and be haves in the same way
as a veh icle without EDL.
As soon as the brake has coo led down, EDL switches on again auto ­
matically.
Electronic limited slip differential
In vehicles w ith front wheel drive *, an e lectron ic lim ited slip d ifferen­
tial engages when driving on curves . The brakes are applied spec ifi­
cally to the front wheel that is on the inside of the curve. T his m ini­
m izes sliding on the front wheels and enables precise and neutral dr
iv ing t hrouge curves. The electronic lim ited slip differentia l does
no t engage whe n driving in we t cond it io ns or snow.
& WARNING
• Wh en acc elerating on slipp ery s urface s, such a s on ice or snow,
always be careful when depre ssing the accele rator pedal. Even
with the EDL and the electroni c limited slip differential working,
the dr ive wh eels can spin and reduce you r ability to control your
c ar . -Ri sk of cra sh!
• The increased safet y afforded b y EDL and the electronic l imited
slip differ ential d oes not mean th at you can take safety risks .
Alw ay s adapt your d riving st yle to the road c onditions and traffi c
si tuation.
[ i ] Tips
If a fa ult occurs in the ABS, the EDL is also not funct ioning. This is
ind icated by the ABS warn ing light=>
page 16 . •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is a ccelerating.
General notes
T he Anti-Slip Regu lation System (ASR) is in tegrated in the electronic
stabilization program (ESP) . When the veh icle starts up and acceler­
a tes, the wheels are preven ted from sp inning by adjust ing the engine
power to match the amount of grip ava ilable from the road surface.
How the system works
ASR performs automatica lly, i.e. without the driver's intervent ion.
With the a id o f the ABS sensors=>
page 245, ASR moni tors the speed
of the driven wheels. If the wheels start to spin, engine torque is
reduced automatically unti l the tires find enough grip to lock onto
the road s urface. The system is active across the entire speed range . .,

Alphabetical index -________________ f!:VII
Electronic immobilizer ..... .. .. .. . 346
Homel ink® un iversal remote control . 346
Remote control key .......... ..... 346
Tire pressure monitoring system . .. . 346
Defective light bulb warning ... ... . .. .. 34
Defrost ing the windows . . . . . . . . . . . 92, 99
Deluxe automatic climate control ....... 88
A/C mode ............. ... ........ 93
Air distribution .. .. .. .......... ... 92
Air vents .. .. ... .......... .... .. .. 93
Automatic mode .... .. .. .. .. .... .. 90
Controls .. .. ................. .. .. 89
Defrost ...... ...... .. .. .. .. .... .. 92
Description ........ ....... .. .. .. .. 88
Economical use ................... 94
Fan . ... .................... ..... 91
Rear window defogger ......... .. .. 92
Recirculation mode ................ 91
Temperature ..................... 91
Turning on and off ............ .... . 90
Deluxe automatic climate control plus ... 95
A/C mode ......... ..... .... .... . 100
Air distribution . ... ............... 99
Air vents .. ............. .. .... .. . 101
Air vents (rear) . ............... .. . 101
Automatic mode .... .. .. .. .. .... .. 97
Automatic recirculation ........... . 102
Basic settings ............... ..... 102
Controls .. .. .. .. .. ...... .. .. ... .. 96
Defrost .......................... 99
Description ....................... 95
Economical use .................. 102
Fan .. .. .................... ..... 98
Front seat heating ............ .... 103
Controls and equip­
ment Safety first
Rear window defogger
... .. .. .. .. . 100
Recirculation mode ............... . 99
Synchronization ..... .. .. ......... 102
Temperature ..................... 98
Turning on and off . .... ........... . 97
Determining correct load limit ... .. .. .. 305
Digital clock ..... ............. .. .. .. . 10
Digital compass ............... ... ... 75
Digital speedometer ... ............... 20
Dimensions ... .. ................... 341
Doors Emergency locking .............. .. 46
Driver informat ion system .......... ... 18
Defective light bulb warning ......... 34
Digital speedometer ....... ... .. .. . 20
Driver information messages ........ 26
Open door or rear lid warn ing ........ 20
Outside temperature display ........ 19
Sound system display .............. 19
Driver seat
See Seating position .............. 178
Drive r's seat memory
Act ivat ing remote control key .... .. . 81
Driving lights ........................ 62
Driving messages ........... .. ... .... 26
Dr iving safely . .. .... .... .. ... ...... 176
Driving through water ... .. . ... .. .. . . 251
Dr iving time .. .. .... ............. ... 22
Duplicate key ........................ 3 7
Dust filter . . . . . . . . . . . . . . . . . . . . . . 88, 95
Dynamic shift program .. ............. 159
Dynamic stee ring . . . . . . . . . . . . . . . . 13, 32
E
Easy entry function .......... ......... 79
Electrica l seat adjustment
See Seat adjustment .. ..... .. .. .. .. 78
Electromechanical parking brake
Emergency braking ............ .. . 112
Ma lfunction ..................... 112
Operation ....................... 110
Parking ............ .. .. .. .... ... 111
Releasing and closing ............. 110
Starting assist ...... ... ... .... ... 111
Starting from rest ... .. .... .. . ... . 111
Starting off with a trailer ....... .. . 112
Warning/indicator lights ... .. .. .. .. 16
Electronic differential lock (EDL) How the system works ........... . 242
Warning/indicator lights . .. .. .. .. .. 16
Electronic immobilizer . . . . . . . . . . . . 11, 40
Electron ic power control
(EPC) warning/indicator light ........ 13
Electronic stabilization program (ESP)
How the system works ............ 240
Warning/indica tor lights ... .... .. .. 14
Emergency braking . ... .............. 112
Emergency flasher .......... ......... 66
Warning/indicator lights .... ...... . 15
Emergency key ... .. .. ............... 3 7
Starting engine ................... 40
Emergency locking of the doors .. .. ..... 46
Emergency operation
Luggage compartment lid ....... ... 47
Power top .... .................... 56
Vehicle operation Vehicle care Do-it-yourself service Technical data