2010 AUDI A5 CABRIOLET check engine

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Working on the battery
Be especially careful when working on or near the
battery.
The battery is located in the luggage compartment under the
floor. Before you check anything in the lu~gage compart­
ment, read and heed all WARNINGS=>
&-
Always heed the safety warnings, when working on the vehicle
battery or the vehicle electrical system to prevent injury.
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre­ cautions when working on the battery.
@
®
Always wear eye protection.
Battery acid contains sulfuric acid. Always wear
gloves and eye protection.
No
- sparks
- flames
- smoking .
When a battery is charged, it produces hydrogen
gas which is explosive and could cause personal
injury.
Always keep the battery well out of reach of chil­
dren .
& WARNING
Whenever working on the battery or on the electrical system,
there is the risk of injury, accident and even fire. Read and heed
the following WARNINGS:
& WARNING (continued)
• 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. Sulfuric 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, immedi­
ately 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 negative 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 system, disconnect the
negative ground cable.
• Before performing any work on the electrical system, switch
off the engine and ignition as well as any electrical equipment.
The negative cable on the battery must be disconnected. If you are
just going to replace a light bulb, then it is enough to switch off the lights. ..,_

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If it is not poss ible to use a ba ttery of this type, the new battery must
h ave the same capacity, voltage (12 volts), amperage, const ruct ion
and plug sealing .
When installing the battery, make sure the ignition and all electrical
consumers are turned off .
0 Note
Make sure the vent ilation hose on the side of the battery is
connected, otherwise fumes or battery acid can leak out.
c£' For the sake of the environment
Because of the problem of proper disposal of a battery, we recom­
mend you r author ized Audi dealer change the battery fo r you .
Batteries contain sulfuric acid and lead and must always be disposed
of properly in compliance with all env ironmenta l regu lations.
Disposing of vehicle batteries improperly is very dangerous to the
environment. •
Windshield/headlight washer
container
Fig. 226 Engin e
c o mpa rt m ent : W in d­
s hiel d an d hea dlight*
wa sh er fl uid containe r
Vehicle OP-eration
The washer fluid container is marked with the symbol¢, on
i t s cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS ~ & in "Working
in the engi ne compar tment" on
page 280 .
-Lift the filler cap tongue to add washer fluid. You can fill
the container to the top.
- Press the cap back onto the filler neck after filling the
co ntainer.
You can find the reservoir capacit y in the table in=> page 342.
To prevent lime res idue from build ing up on the sp ray jets, use
distilled water when refilling . Always add a glass cleaner solution
(with frost protection in the winter) .
0 Note
Do not mix engine coo lant antifreeze or any other additives to fill up
the windsh ield washer reservo ir. •
Vehicle care Do-it-yourselt service iTechnical data

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& WARNING (continued)
• The spare tire is intended only for temporary and short-term
use. It should be replaced as soon as possible with the normal
wheel and tire.
• After mounting the compact spare tire, the tire pressure must
be checked as soon as possible. The tire pressure of the compact
spare tire must be 4.2 bar; otherwise, you risk having an accident.
• Do not drive faster than SO mph (80 km/h). You risk having an
accident.
• Avoid full-throttle acceleration, heavy braking, and fast
cornering. You risk having an accident.
• Never drive using more than one spare wheel and tire. You risk
having an accident.
• Normal summer or winter tires must not be mounted on the
compact spare wheel rim.
• For technical reasons, the use of tire chains on the spare tire is
not permitted.
If it is necessary to drive with tire chains, the spare
wheel must be mounted on the front axle in the event of a flat in a rear tire. The newly available front wheel must then be installed
in place of the rear wheel with the flat tire. Installing the tire
chain before mounting the wheel and tire is recommended.
• Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident.
- Never store the inflatable spare tire or jack and tools in the passenger compartment.
- Always store all jacking equipment, tools, and the inflatable
spare tire in the luggage compartment.
- Tighten the knurled retaining screw for the inflatable spare
tire securely. •
Changing a wheel
Before changing a wheel
Observe the following precautions for your own and your
passenger's safety when changing a wheel.
-After you experience a tire failure, pull the car well away
from moving traffic and try to reach level ground before
you stop :::> & .
- All passengers should leave the car and move to a safe
location (for instance, behind the guardrail):::>& .
- Engage the parking brake to prevent your vehicle from
rolling unintentionally:::> &.
- Move selector lever to position P :::> & .
- If you are towing a trailer: unhitch the trailer from your
vehicle.
- Take the jack:::>
page 318 and the spare tire :::> page 319
out of the luggage compartment.
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn
off the engine, turn the emergency flashers on and use other
warning devices to alert other motorists.
• Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed with the
folding chocks or other objects. When one front wheel is lifted off
~

Emergency situations Ill
-------------=----
Connect POSITIVE (+) to POSITIVE (+) (red)
- Remove the cover above the jump start connectio n.
- Open the red cover o n the positive pole~
page 334,
fig. 248.
1 . Connect one e nd of the pos it ive cable ( red) on the
jump
start bolt~
page 334, fig. 249 (D (Bolts under red cover
= "positive") of the veh ic le to be started @.
2 . Connect the other end to the positive te rminal @ of the
booster ba ttery @.
Connect NEGATIVE(-) to NEGATIVE(-)
(black)
3. Con nect o ne end to the negative ter minal ® of the
boost er batte ry @ .
4. Connect the other end o f the nega tive cab le (black) to the
jump start bolt© (Bolts with hex head = "ne gative") of
the vehicle to be starte d @ .
Starting the engine
- Start the e ngine of t he ve hic le w ith the boos ter ba ttery.
Run the engine at a moderate speed.
- Start eng ine w it h discharged ve hicle bat tery in t he usu al
manner .
- If the engine fai ls to sta rt: do not k eep the s tarter
c ra nki ng for longer tha n 1 0 seco nds. Wait for a bou t
30 se conds and then t ry again.
- With engine ru nni ng, remove jumper cables from bot h
ve hicle s in th e exac t
re verse ord er.
- Close t he red cover on the pos it ive po le.
Safety first
T he battery is vented to the outside to prevent gases from enter ing
t he ve hicl e inter ior. Make su re tha t the ju mper clamps are we ll
connected with the ir
metal parts in full contact with the battery
terminals .
& WARNING
To avoid serious personal injury and damage to the vehicle, heed
all warnings and instructions of the jumper cable manufacturer . If
in doubt, call for road service .
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables , make sure that they cannot
get caught in any moving part s in the engine compartment .
• Do not bend over the batteries · danger of chemical burns!
• The battery cell locking screws mu st be tightened securely .
• Before you che ck anything in the engine compartment, always
read and heed all WARNINGS=>
page 272, ''Eng ine compart­
ment ".
0 Note
Imprope r hoo k-up o f jumpe r cab les can ruin the gene rator.
• Always connect POSITIVE( +) to POSITIVE(+), and NEGATIVE( -)
t o NEG ATI VE( -) ground pos t of the ba tte ry m anag er cont rol unit.
• Check that all sc rew p lugs on the battery cells are screwed in
fi rm ly . If no t, tig hten plugs prio r to con nectin g clamp on neg ative
battery terminal.
• P lease note that the proced ure for connecting a jumper cable as
described above app lies specifically to the case of your vehicle being
jum p st arted. When you a re giving a jump sta rt to anot her vehicle, do
not connect the negative( -) cab le to the negative (-) terminal on the
discharge d batte ry © =>
page 334, fig. 249 . Instea d, sec urely
connect the negative( -) cable to either a solid meta l component t hat
is f irm ly bolted to t he eng ine b lock or to the eng ine b lock itself. If the .,_
Vehicle care Do-it-yourself service Technical data

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& WARNING
• To reduce the risk of serious injury and vehicle damage.
-Always lift the vehicle only at the special workshop hoist and
floor jack lift points illustrated=>
page 338, fig. 254 and
=> page 338, fig. 255.
- Failure to lift the vehicle at these points could cause the
vehicle to tilt or fall from a lift if there is a change in vehicle
weight distribution and balance. This might happen, for
example, when heavy components such as the engine block or
transmission are removed .
• When removing heavy components like these, anchor vehicle
to hoist or add corresponding weights to maintain the center of
gravity. Otherwise , the vehicle might tilt or slip off the hoist ,
causing serious personal injury.
0 Note
• B e aw are of the following poi nts b efo re li fting the ve hicl e:
- The vehicle should never be lifted or jacked up from under­
neath the engine oil pan, the transmission housing , the front or
rear axle or the body side members . This could lead to serious
damage.
- To avoid damage to the underbody or chassis frame, a rubber
pad must be inserted between the floor jack and the lift points.
- Before driving over a workshop hoist, check that the vehicle
weight does not exceed the permissible lifting capacity of the hoist.
- Before driving over a workshop hoist, ensure that there is
sufficient clearance between the hoist and low parts of the
vehicle. •
Safety first Vehicle care Do-it-yourself service Technical data

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reliability. For detailed vehicle maintenance consult your Warranty &
Maintenance booklet.
Under difficult operating conditions, for example at extremely low
outside temperatures, in very dusty regions, when towing a trailer
very frequently, etc., some service work shou ld be performed
between the intervals specified. This app lies particularly to:
• oil changes, and
• cleaning or replacing the air filter.
<£> For the sake of the environment
By regularly maintaining your vehicle, you help make sure that emis­
sion standards are maintained, thus minimizing adverse effects on
the environment. •
Important considerations for you and your
vehicle
T he increasing use of electronics, sophisticated fuel injection and
em ission control systems, and the generally increasing technical
complexity of today's automobiles, have steadily reduced the scope
of mai ntenance and repai rs which can be carried out by vehicle
owners.
Also, safety and environmental concerns place very strict
limits on the nature of repairs and adjustments to engine and trans­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usually require special tools,
testing devices and other equipment available to spec ially trained
workshop personnel in order to assure proper performance, reli­
ability and safety of the vehicle and its many systems.
Improper maintenance, adjustments and repairs can impair the oper­
ation and reliability of your vehicle and even void you r vehicle
warranty . Therefore, proof of servicing in accordance with the ma in­
tenance schedule may be a condition for upholding a possible
warranty claim made w ith in the warranty period . Above all, operat
ional safety can be adversely affected, creating
unnecessary r isks for you and you r passengers.
If in doubt about any serv ic ing, have it done by your authorized Audi
dealer or any other properly equipped and qualified workshop. We
st rongly urge you to give your authorized Audi dealer the opportunity
to perform all scheduled maintenance and necessary repairs. Your
dealer has the facilities, original parts and trained specialists to keep
your vehicle running properly.
Performing limited maintenance yourself
The following pages describe a limited number of procedures which
can be performed on your vehicle with ord inary tools, should the need
arise and trained personne l be unavailable. Before performing any of
these procedures, always thoroughly read all of the applicable text
and carefully follow the instructions given. Always rigorously observe
the
WARNINGS prov ided .
Before you check anything in the engine compartment, always read
and heed all WARNINGS ~
& and~ & in "Working in the engine
compartment" on
page 280.
& WARNING
• Serious personal injury may occur as a result of improperly
performed maintenance, adjustments or repairs.
• Always be extremely careful when working on the vehicle.
Always follow commonly accepted safety practices and general
common sense. Never risk personal injury.
• Do not attempt any of the maintenance, checks or repairs
described on the following pages if you are not fully familiar with
the se or other procedures with respect to the vehicle, or are uncer­
tain how to proceed.
• Do not do any work without the proper tools and equipment.
Have the necessary work done by your authorized Audi dealer or
another properly equipped and qualified workshop .
~

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& WA RNING (conti nu ed )
• Never in stall acces sorie s such a s telephone c radle s or beverage
holders on airbag covers or within the airbag deployment zones .
Doing so will inc rease the risk of inju ry if airbags are tr iggered in
an accident!
• Before you check anything in the engine compartment , always
read and he ed all WARNINGS ~
page 272.
0 Note
• If items other tha n ge nui ne A udi spa re parts, add-on eq uipme nt
and accessory items are used or if repair work is not per formed
acco rding to spec ified me thods , th is can res ult in severe damage to
your vehicle's engine and body (such as corrosion) and adversely
affect your vehicle's w arranty.
• If emergency repairs m ust be performed e lsewhere, have the
veh icle exam ined by an au tho rized Audi dealer as soon a s pos sible.
• Th e manufact urer cannot be held liab le for damage w hich occ urs
due to fa ilure to comply with these st ipulat ions .•
Technical Modifications
Our guidelines must be complied with when technical
modifi cations a re mo de.
Always consu lt an authorized Audi dealer before s tarti ng work on any
mo dificat ions .
Thi s w ill help ens ure that v ehicle function, pe rfo rma nce and safety
are not impa ired ~& .
A ttempting to work on e lec tron ic compone nts and the softwa re used
w ith them can cause malfunctions. Because of the way electronic
c omponents are in tercon nected w it h each ot her, s uch ma lf u nctio ns
can also have an adverse affect on o ther systems that are not directly
involved . Thi s means that you risk both a s ubstantial reduct ion in the operat
ional safety of yo ur vehicle and an increased wear of vehicle
p arts ~& -
Author ized Audi dealers will perform t his wo rk i n a profess ional and
competent manner or, in special cases, refer you to a p rofessiona l
c omp any tha t spec ia liz es i n su ch modifications.
& WARNING
Improper repa irs and modifications can change the way vehicle
systems work and cause damage to the vehicle and serious
personal injury.
0 Note
If eme rgency repa irs must be pe rfo rmed elsewhe re, have the vehicle
examined by an authorize d Aud i dea ler as soo n as poss ible.•
Declaration of Compliance,
Telecommunications and Electronic Systems
Radio Frequency Devices and Rodiocommunicoti on
E quipm ent Us er fvt onuol Notice.
Th e manufacture r is no t responsib le for any ra dio or T V interference
caused by una uthorized mod ificat ions to th is equipment .
Devices
The follow ing devices each comply with FCC Part 15.19, FCC Part
1 5.21 an d RSS-Ge n Issue
1:
• Adaptive Cr uise Contro l*
• Conven ien ce key *
• Audi side ass ist *
• Cell phone pac kage*

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Auto Lock .. .. ... ..... ... ... ... .. .. .. 41
Auto Safety Hotline ... ... ... . .. ..... 185
Auto-Check Control .. ..... ... .... ... .. 26
Automatic belt retractor .......... ... 195
Automatic car wash See Washing ......... .... .. .... . 261
Automatic climate control . . . . . . . . . 88, 9S
Automatic driving light control ......... 62
Automatic power top ..... .. .. .. .... .. SO
Automatic Shift Lock (ASL) ... .. .. 150, 158
Automatic transmission 6-speed automatic transmission ... . 148
Automatic Shift Lock (ASL) .... 150, 158
Driving ...... ...... .. .. .. .. .. .. . 148
Dynamic shift program ... .... .. ... 151
Emergency release ............. .. . 154
Emergency release for selector lever
(mu ltitron ic®) ............... .. . 161
Fail-safe mode .............. 153, 161
Kick-down ...................... 151
Manual shift program ............. 152
multitronic ® ..................... 155
Selector lever ........... .. .. 149, 157
Shift buttons ....... .. .. .... 153, 160
Steering wheel with tiptronic ® . 153, 160
Automatic wipe/wash system .......... 69
Average speed .. ....... .... .. .. .. .. .. 22
Avoid damaging the vehicle .. .. .. .. .. . 251
Controls and equip­
ment Safety first
B
Battery
... .. ... ... ................. 291
Charging . .. .. .. .... .. .. ... ... .. . 293
Important warnings when work ing on the
battery ..... ........... ...... .. 292
Jump starting . ........... ........ 333
Low ... .. .. .. .... .... .. ......... 247
Replacing the battery .. .. .. .... ... 294
State of charge ..... .. ... ...... .. 247
Winter operation ..... ..... ....... 291
Working on the battery .... .... .... 292
Battery voltage .. ........... ...... .. . 34
Before driving .. ... .... .. .. .. .. ..... 177
Belt positioner .. .. .... .. ... ... ..... 194
Blended gasoline ................ ... 27 4
Body cavity sealing . ................. 267
Booster seats ... .. ...... .. ......... 230
Brake assist ..................... ... 245
Brake booster . ........ ... .......... 244
Brake fluid
Changing the brake fluid ........... 290
Checking the brake fluid level ..... .. 290
Reservoir .. .. .. .... .... ......... 290
What is the correct brake fluid level? . 290
What should I do if the brake fluid warning light comes on? . ... ... .......... 290
Brake system .. .. .. ..... .... ........ 290
Anti-lock brake system . .. .......... 16
Brake fluid ... .... ............... 290
Brake fluid specifications for refill and
replacement ................... 290
Brake light defective ....... .... ... . 34 Brake pads
.. .. .... ..... .... .... . 251
Electromechanical parking brake .... 110
General information .............. 243
How does moisture or road salt affect the
brakes? ... .... .............. .. 243
Malfunction .............. .... .. .. 28
Warning/indicator lights ....... .. .. 17
Worn brake pads symbol ........... 33
Braking guard
See Audi braking guard ............ 129
Break-in period ... .. .. .............. 250
Brake pads .. ...... ........... .. . 251
Tir es ... .. .. ................. .. . 250
Bulbs ................ .. .... .... .. . 331
C
California Proposition 65 Warning .. ... 281
Battery specific .................. 293
Capacities ......................... 342
Car care .. .... .............. ...... . 260
Interior ............ .. .. .. .. .. .. . 268
Plastic and vinyl .... ............. . 264
Weatherstrips ............ .. .. .. . 266
Care of exterior ... .... .. . .. .. .. .. .. . 260
Cargo area
See Loading the luggage compartment ..
183
Catalytic converter .. ..... ........... 251
Certification ......... .............. 346
Changing a flat tire .. ................ 320
Changing a wheel ...... ...... .... .. . 320
Changing engine oil ... .. .. ......... . 285
Vehicle operation Vehicle care Do-it-yourself service Technical data