catalytic converter AUDI A5 COUPE 2011 Owners Manual

____________________________________________ D_ r_ i_ v _i_,ng and environment
New brake pads have to be "b urn ished in" before they have opt imal
grab ~& -
Dur ing the break-in period, you sho uld avoid putti ng severe loads on
the brakes. Severe loads include, for example, sud den ha rd brak ing,
i n part icula r a t very high s peed s or, for e xam ple, on moun tain passes.
& WARNING
New brake pads don't have the best stopping power and must be
" broken-in " during the initial 100 to 150 miles (150 to 200 kilo­
meters ) of normal city driving . You can compensate for this by
p ressing the brake pedal more firmly . This also applies later when
new pad s are installed .•
Avoid damaging the vehicle
Whe n yo u are d riving on poor ro ad s, or ove r curbs, steep r amps, etc.,
ma ke ce rtain that low -lying parts such as spoilers and exhaust system
p arts do not bo ttom out and ge t damage d.
Th is is espec ia lly true for veh icles with low-slung chass is (sports
chassis)* and fully loaded vehicles .
a
Driving through water on roads
Note the fo llowing to avoid vehicle damage w hen drivi ng thro ugh
water, fo r examp le on flooded roa ds:
• The wate r must not be any h igher than the bottom of the vehicle
b ody .
• Do not dr ive faster tha n walk ing spee d.
Controls and equip­
ment Safety first Vehicle operation
& WARNING
After driving through water, mud
, slush, etc ., the brakes may be
slow to take effect because of wet brake rotors and pads. Dry the
brakes first by braking carefully to restore the full braking effect .
0 Note
Vehicle components such as the engin e, tra nsmission, sus pension or
elect rical system can be severe ly damaged by driv in g thro ugh water .
[ i ] Tips
• Check the depth of t he wate r before driving throug h it.
• Do not stop the vehicle, drive in reverse or switch the e ng ine off
w hen driving throug h wate r.
• Keep in m ind that o ncoming vehicles may c reate waves that raise
t he water leve l and make it too deep fo r yo ur vehicle to d rive throug h
safely.
• Avo id drivi ng t hroug h sa lt w at er bec ause it can cause cor rosio n.
Catalytic converter
It is very imp ortant that your emission contr ol syst em
(ca ta lytic convert er) is functioning pro p erly to ensur e
t h at your vehic le is runnin g in an environment ally s oun d
man ner .
- Always use lead -f re e gasoli ne~ p age 269 , "Fuel sup ply" .
- Never r un th e t ank down a ll the way to em pt y.
- Neve r pu t too muc h mo to r oil i n y our eng ine ~
page 279,
"Add ing eng ine oil
'l!:r." .
- Never try to p ush- or tow-start your veh icle.
Vehicle care Do-it-yourself service Technical data

Driving and environment
The catalytic converter is an effic ient ''clean-up" dev ice built into the
ex hau st system of the ve hicle. The c ata ly tic converter bu rns many of
the pollutants in the exhaust gas before they are released into the
atmosphere.
T he exclusive use of unleaded fuel is c rit ical ly import ant for the life of
the cata lytic converter and proper funct ioning of the eng ine.
& WARNING
• Do not park or operate the vehicle in areas where the hot
e xhaust system may come in contact with dry grass, brush, fuel
spill or other material which can cause a fi re.
• Do not apply additional undercoating or rustproofing on or
near the e xhaust man ifold , exhaust pipes , catalytic converte r or
heat shields . During driving, the substance used for undercoating
could overheat and cause a fire.
0 Note
• Be aware that j ust one tank filling with leaded fuel will already
seriously degrade the performance of the ca talytic conve rter.
• Do not exceed the correct engine oil level =>
page 279.
• Do not dr ive until the fuel tan k becomes complete ly empty . The
engine could misfire . Unburned fuel cou ld also get into the exha ust
system and th is cou ld cause the catalyt ic converter to overheat .
• Do not tu rn o ff the igni tion while t he vehi cle is moving.
• Do not contin ue to operate your vehicle under these conditions, as
otherwi se fuel c an reac h the c atal ytic conve rter. This co uld res ult in
overheat ing of the converter, requir ing its replacement.
• T o ass ure eff icient ope ra ti on of the Emiss ion Cont rol System:
- Have your vehicle maintained properly and in accordance with
the se rvice recommendations in your Wa rranty
& M aintenance
booklet. -
Lack of proper maintenance as well as improper use of the
veh icle w ill impair the f unc tion of the emiss io n con trol sys te m an d
co uld lead to damage.
<£> For the sake of the environment
Even when the Emiss ion Control System is operating p roperly, the
exhaust gas can have a s ulfur -like exhaust gas smell under some
operat ing states . This depends on the sulfur content of the fu el being
used. Using a different brand of fuel may help, or filling the tank with
lead -free supe r grade gasoline. •
Operate your vehicle economically
and minimize pollution
General
Your personal style of d riving will det ermine the economy
of your vehicle, as well as exhaust and noise le vels.
Fuel eco nomy, e nvir onmenta l impa ct, and wea r o n your eng ine ,
brakes and tires large ly depend on three factors:
• your persona l driving style
• operat ing cond itions
• t echni cal lim itat io ns
If you anticipate what you need to do next and drive economica lly,
you c an easily cut yo ur fuel consum ptio n by 10- 15 pe rcen t. T his
sect io n w ill give you some tips on how you can he lp the env ironment
and your pocket book.
[ i ] Tips
Th e consumption estimates as pub lished by ENV IRONMENTAL
PROTECTIO N AG ENCY ( EPA) and Transport Ca nada may not co rre­
spond to your act ua l cons umption on the road, which will vary

Driving and environment
0 Note
• Have your vehicle mainta ined properly and in accordance w ith the
service recommendations in your Warranty
& Maintenance booklet.
Lack of proper maintenance as well as improper use of the vehicle w ill
impair the function of the emission control system and could lead to
damage.
• Do not alter or remove any component of the Emission Control
System unless approved by the manufacturer.
• Do not a lter or remove any device, such as heat shields, switches,
ignition w ires, va lves, which are designed to protect your vehicle 's
Emission Control System and other important vehicle components .•
Fewer short trips
Fuel consumption will always be relatively high on short
trips .
-Try to avoid driving short distances with a cold engine.
The engine and catalytic converter have to reach their optimal oper­
ating temperature
to reduce fuel consumption and noxious emis ­
sions effectively.
Just after starting, a cold engine in a mid-size car only achieves a fuel economy of 6-8 miles per ga llon (30-40 l/100 km). After about a half
a mile, fuel economy climbs to 12 mpg (20 l/100 km). After about
2.5 miles (4 km), the engine is at its proper operating temperature
and fuel economy has reached a normal level. So you can see that you
sho uld avoid short trips whenever poss ible.
The
outside temperature is also cr it ical in this regard . Your car
consumes more fue l in the winter than in the summer.

-~_C_ le_ a_n_ i_ n_ g=- a_ n_d___. p_ ro_ t_e _c_ t_ i_o _n ___________________________________________ _
- For deep cleaning afterwards, use only a ded icated acid­
free cast alloy wheel cleaner .
- Rub a coat of
liquid wax onto the rims every three mont h.
B e s ure to re ach a nd tre at all part s o f the rim .
To preserve the d ecorative ap pea ra nce of the cast alloy whe els, so me
special care is necessary. In a ddition to roa d dirt and sa lt, brake dust
is a lso co rrosiv e. If left on fo r too long, b rake dus t can ca u se p itting .
Use only spec ial
acid-free cleaners formulated for a lloy rims. Safe
pro duct s ar e availa ble at your author iz ed Audi de aler. Neve r leave the
cleaner on the rims longer than spec ified on t he labe l. If not rins ed
off promptly, the acid con tain ed in some cleaners can att ack t he
t hr eads o n the wheel bolts .
N ever us e abrasiv e or metal po lish ing cleaning a gents.
If the protec ­
t ive co ating has b een ch ipped, e.g. by kick ed up ro ad dir t, to uch it up
as soon as possible.
& WARNING
• Moisture and ice on brakes may affect braking efficiency
=> page 239, "General information" . Test the brakes carefully
each time you wash the vehicle.
• Always read and heed all WARNINGS and other information
=>page 256. •
Body cavity sealing
Th e bo dy cavi ty sealing d oes n ot need to be ch ecked.
All body cav it ies which co uld be affecte d by co rrosion have been tho r­
oughly protected at t he factory .
T hi s sea ling does not require any inspection or additiona l treatment.
If any wax s hould seep ou t of the cavi ty when the amb ient temp era­
ture is high , it can be removed w it h a plastic sc raper and a suitable
so lvent .
& WARNING
Solvents can be dangerous.
• Benzine is flammable and toxic . If you use benzine for
removing the wax, keep sparks, flame and lighted cigarettes
away . Never dump benzine on the ground, into open streams or
down sewage drains.
• Be sure to observe all safety and environmental regulations.
Follow all instructions on the container.
• Always read and heed all WARNINGS and other information
=:>page 256. •
Chassis
Have th e undercoating c hecke d f or da mage fr om time t o
tim e.
Th e lower body she ll of your A udi is a lso thoro ug hl y protec ted against
co rrosion.
Any damage to the undercoating caused by road haza rds sho uld be
re paire d pr omp tly.
& WARNING
Too much undercoating in the wrong places can caus e a fire.
• Do not apply additional undercoating or ru stproofing on or
near the exhaust manifold, exhaust pipes, catalytic converter or
heat shields. While driving , the substance used for undercoating
could overheat and cause a fire.
• Always read and heed all WARNINGS and other information
=:>page 256 . •

In order to fill the tank properly while protecting the environment,
please follow this refueling procedure carefully.
& WARNING
Under normal operating conditions, never carry additional fuel
containers in your car. Gas canisters and other containers used to
transport fuel can be dangerous. Such containers, full or empty,
may leak and could cause a fire in a collision. If you must transport
fuel to use for your lawn mower, snow blower, etc., be very careful
and always observe local and state laws regarding the use, trans­
portation and storage of such fuel containers. Make certain the
container meets industry standards (ANSI/ASTM F852 -86).
0 Note
Never drive your vehicle until the fuel tank is completely empty . The
irregular supply of fuel can cause misfiring. Gasoline could enter the
exhaust system and damage the catalytic converter. •
Refuelling
Fig. 199 Right rear
vehicle side: Opening
the fuel filler flap
Vehicle OP-eration
Fuel supply and filling your fuel tank
Fig. 200 Fuel filler
flap with attached fuel
cap
When activating the central locking, the fuel filler flap is
automatically unlocked or locked. Refuel the vehicle with the
igni tion turned
off.
Taking the fuel cap off
-Turn off the ignition.
- Press the left side of the fuel filler flap to open it
~ fig. 199 -arrow-.
- Unscr ew fuel cap counter-clockwise and hang it on the fuel
filler flap~ fig. 200.
Refuelling procedure
-Insert the fuel nozzle from the gasoline pump into the
fuel filler neck as far as it will go.
- Select a medium refuelling rate so that the nozzle
switches off automatically when the tank is full.
Putting the fuel cap back on
- After filling your tank, twist the fuel cap clockwise as far
as it will go.
- Close the fuel filler flap. .,_,
Vehicle care Do-it-yourselt service iTechnical data

___ A_ l_,, p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Cargo area
See Loading the luggage compartment
177
Cargo net .. .. ... ..... .. .. .. .. .. . .. . 84
Catalytic converter .................. 247
Center a rmrest
Adjusting .. .. .................... 82
Sto rage compartment ... ..... ..... 82
Cert ification .. .. .. .. .. .. ... .... .... 343
Changing a flat ti re .. .. .. .. ......... 316
Cha ng ing a wheel ........... .. .. .. .. 316
Chang ing engine oil .. .. ... .......... 280
Chassis Undercoating ... .. .. ...... .... . .. 262
Checking Engine coo lant level ........ .... .. 282
Checking tire pressure ............ ... 297
Child res tra int system anchors ... .. .. . 229
Child restra ints
Dange r of using chi ld restraints in the front
seat ........ ...... ...... .. .. .. 192
Where can I get add itiona l information
a bou t child rest rain ts and t he ir u se? ...
234
Chi ld safety ....... ... ... .. ... ... ... 215
Convertible locking retractor . ... ... 225
Important sa fety instructions for using
child safety seats .... .... ... .. .. 218
Importa nt th ings to know whe n driving
w ith children ................. .. 215
Insta lling a child restraint using the LATCH
system . ... ..... ....... .. .. . .. 231
Lower anchorages . ............. .. 230 Mounting and releas
ing the anchorage Coat hooks ... ... ... .. .. .... ... . ... . 94
hook ........ .. .... ...... ..... 23 1
Cold t ire inflation p ressure .... ... . ... 295
T ethe r anchors .. ... .. .. .. .. .... . 232
T ethe r straps . ....... .. .. ... .. .. . 232 Compact spare tire
........... ....... 314
See also Spare t ire ............... 314
Chi ld safety seats ............ .. .. .. . 221
Booste r se ats .. .. .... .... .. .... . 223
Convert ible chi ld sea ts ......... .. . 222
Convert ib le lock ing retractor . ... ... 225
Dange r of using child restraints in the front
seat .. .. .. .. .. ... ... ... .. ... .. 192 Compass mirror .
.... .. .............. 71
Com pliance . ................. .... .. 343
Consumer Information ... .... ... 179, 340
Contacting N HTSA ....... .. ... .... .. 179
Conven ience closed .. .. .. .. .......... 54
How do I p roperly install a child safety seat Conven
ience key . .. .. .. ............. . 48
in my vehicle? ...... .. .. ... .. .. . 218 START ENGINE STOP button .
.. 114, 115
In fant seats .............. .. ..... 221 Starting engine ..
... ..... .. .. .. .. 114
Insta lling .. .... .. .. .. .. . ... .. ... 225 Switching eng
ine off ...... .. .. .... 115
LATC H system .. ...... ...... ..... 231 Switching on
ignition ........ ... .. 114
Safety instruct ions .. .. .. .. .. .. ... 218 Unlock
ing and lock ing vehi cle ... .... 48
Cigare tte lig hter . ... .... ... . ... .... .. 92 Conven
ience opening . .. .... .......... 54
Cleaning Convert
ible chi ld safety seats .. ... .. .. 2 22
Al canta ra ® (syn the tic sue de) .. .... . 266
Convert ible lock ing retractor
E ngine comp artment ...... .. .. .. . 267
Activat ing .... ........... ... .... 227
E xhaust t ail pipes .... ... . ... .. .. . 263
Deactivating ... ... .... ..... .... . 228
Fabrics an d fabric cove rings ... .... . 263
Using to secu re a child safety seat . . 225,
Instrument panel ..... .. . ... .... . 264 227
Interior .. .. ... .. .. .. .... .. .. .. . 263
Coolant system .. .... .. ............. 28 1
Leathe r ............. .... .. ..... 265
Cooling System
MMI control console ............. . 263
Expansion tank ........... ... ... . 282
M MI display . .. .. ............... . 263
Cornering light .... .. .. .... .......... 61
Plastic and viny l ............... .. 260
Cruise con trol
Plastic parts ........... .. ... ... . 26 4
Safety belts ......... ... .. .. .. .. . 267
Tr im st rips ..... ...... .... .. .. .. . 259
tr im str ips .. .. ........... .. .. .. . 260 Ch
angin g speed .. .. .... ......... 1 20
Prese lect speed ...... .. .. .. .... .. 12 0
Switching off ... .. .. .. .. ... .. .. .. 120
Switching on ... .. .. .. .. ... .. ... . 119
Cleaning and protection ...... .. .. .. . 256
Warning/indicator lights ... .. .. ... . 17
Clo ck ............ ...... ...... .. .. .. 12
Cruis ing range .. ... . .. .... ... ..... .. 24