2011 AUDI Q7 catalytic converter

Driver information display
On-Board Diagnostic system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) • in the instrument cluster
::::>
page 14, fig. 7 is part of the On-Board Diagnostic (OBD II) system.
Th e warn ing/indicator light illuminates when the ignition is switched
on and goes out after the engine starts and the idle has stabilized.
Thi s ind icates that the MIL is working properly.
If
the light does not go out after the engine is started, or illuminates
while you are driving , a ma lfunction may exist in the engine system.
If the light illuminates, the catalytic converter could be damaged.
Continue driving
with reduced power (avoiding sustained high
speeds and/or rapid accelerat ions) and have the condition corrected .
Contact your authorized Audi dealer .
If the light i lluminates, the electronic speed limiter may also be
malfunctioning. For more information::::>
page 30, "Electronic speed
limiter".
An improperly closed fuel filler cap may also cause the MIL light to
illuminate (only vehicles with gasoline engine)::::>
page 294. •
On-Board Diagnostics
Fig . 21 Location of
Data Link Connector
( DLC )
On-Board Diagnostics monitors the components of your emission
control system. Each monito red component in you r engine system
has been ass igned a code. I n case of a malfunct ion, the component
wi ll be ident ified and the fau lt stored as a code in the control module
memory .
The MIL light may also illuminate if there is a leak in the on-board fuel
vapor recovery system. If the light illuminates after a refuelling, stop
the vehicle and make sure the fuel filler cap is properly closed (only
vehicles with gasoline engine)::::>
page 294.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBD).
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is lo cated to the right of
the hood release
::::> fig. 21.
Your authorized Audi dealer or qualified workshop can interpret the
code and perform the necessary repair .•
Electronic speed limiter
Your vehicle may be factory equ ipped w ith tires that are rated for a
maximum speed of 130 mph (210 km/h). This is less than the
maximum speed of your veh icle. To reduce the risk of sudden tire
failure and loss of control if the vehicle is operated at excessive
speeds, your vehicle also has an electronic speed limiter . The elec­
tronic speed limiter prevents your vehicle from going faster than the
tire speed rating . For more information ::::>
page 330.
If the engine control unit receives faulty vehicle roadspeed signals,
the Malfunction Indicator Lamp (MIL)
0 will illuminate . If this
occurs, contact the nearest authorized Aud i dea ler for ass istance.
~

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When the ignition is on, the backup lights illuminate when the
selector lever is moved into
R.
N -Neutral
The transmission is in neutral in th is posi tion . Sh ift to this posit ion
for standing with the brakes applied~
page 165.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and wh ile moving the
lever out of
N .
D -Normal position for driving forward
Position D is for normal city and highway driving. It ranges from zero
to top speed and all gears shift automatically, depending on engine
load, driving speed and automatically selected shift programs.
When the vehicle is stat ionary or at speeds below 3 mph (5 km/h),
you must always app ly the foot brake before and while moving the
lever to
D out of N.
In certain circumstances it may be advantageous to temporarily
switch to the manual shift program to manua lly select gear rat ios to
match specific driving conditions~
page 167.
S -Sport position
Select this position for sportier performance. In this position, the
transmission will not upshift as soon, allowing the vehicle to use the
increased power available at higher engine speeds to ach ieve livelier
acceleration.
When the vehicle is stat ionary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and while moving the
lever to
S out of N.
& WARNING
Read and follow all WARNINGS ~ & in "Driving the automatic
transmission " on page
163 .
Contro ls a nd e quip ­
m en t Vehicle
OP-eration
0 Note
Coasting downh ill with the transmission in N and the engine not
running will result in damage to the automatic transmission and
poss ibly the catalytic converter .•
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you against acci­
dentally shifting into a forward or the reverse gear and
causing the vehicle to move unintentionally .
Fig. 164 Shift gate:
selector lever lock posi­
tions and interlock
button highlighted
The selector lever lock is released as follows:
- Turn the ignition on.
- Step on the brake pedal.
At the same time press and hold
the interlock button on the side of the gear selector knob
=> fig . 164 with your thumb un til you have moved the
selector lever to the desired position.
Automatic selector lever lock
The selector lever is locked in the P and N positions when the ignition
is turned on. To move the lever from these positions the driver must
depress the brake pedal. As a reminder to the driver, the following
~
Vehicle care Do-it-yourselt service iTechnical data

Driving and environment
New brake pads have to be "burnished in" before they have optimal
grab ~& .
Dur ing the break-in period, you should avoid putting severe loads on
the bra kes. Severe loads incl ude, for example, sudden hard braking,
in part icu lar at very high speeds or, for examp le, on mountain passes .
& WARNING
New brake pads don't have the be st stopping power and must be
" b roken-in " du ring the initial 100 to 150 miles (150 to 200 kilo­
meters ) of normal city driving . You can compensate for this by
pressing the brake pedal more firml y. This also applies later when
new pad s are installed.
'1
Ap plies to veh icles : w it h gasoline eng ine
Catalyt·c converter
It is very important tha t your emission con trol system
(catalytic c onverte r) is f unctioning properly to ensure
that your vehicle is running in an environmentally sound
manner.
- Always use lead-free gasoline~ page 291, "Gasoline" .
- Never ru n the tan k down a ll the way to empty .
- Nev er put to o mu ch mot or oil in y our engin e~
pag e 306,
"Add ing engin e oil~" -
- Neve r try to push -or tow-start yo ur vehicle .
The catalytic converter is an efficient "clean-up" dev ice built into the
exhaust system of the ve hicle. The catalytic converter burns many of
the pollutants in the exhaust gas before they are released into the
atmosphere. The exclusive
use of unleaded fuel is critically important for the life of
t he c atal ytic converte r and proper f unct ion in g of t he engi ne.
& WARNING
• Do not park or operate the vehicle in areas where the hot
e x haust system may come in contact with dry grass , brush , fuel
s pill or other material whi ch can cau se a fire.
• Do not apply additional undercoating or rustp roofing on or
near the exhau st manifold, exhaust pipe s, catalytic converter or
heat shields. During driving , the substance used for undercoating
c ould overheat and cau se a fire .
0 Note
• Be aware th at just one tank fi lling wit h le aded fu el w ill alre ady
ser iously degrade the performance of the catalytic co nverter.
• Do not excee d the correct engine oil leve l~
page 306.
• Do not drive unti l the f uel tank becomes complete ly empty . The
eng ine could misfire. Unbu rned fuel could also ge t into the exha ust
system and th is could cause the catalytic converter to overheat.
• Do not tu rn off the igni tion whi le the veh icle is moving .
• Do not contin ue to operate your vehicle under these conditions, as
o therwise fuel can reach the cata lytic converter . This could result in
overheating of the converte r, requiring its rep lacement.
• To assu re eff icient operat ion of the Emission Co ntrol System:
- Have yo ur vehicle main taine d pr operly and in a ccordan ce wi th
the service recommendations in your Warranty
& Maintenance
booklet .
- Lack of p roper maintenance as well as improper use of the
veh icle w ill imp air the f unction of the emiss io n con trol syste m and
could lead to damage. ..

Driving and environment
------------------------------------------------'
• Do not alter or remove any device, such as heat shields, switches,
ign ition w ires, valves, 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 optima l 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 gallon (30-40 l/l00km). After about a half
a mile, fuel economy climbs to 12 mpg (20 l/100 km) . After about
2.5 mi les (4 km), the engine is at its proper operating temperature
and fue l economy has reached a normal level. So you can see that you
should avoid short trips whenever possible.
Th e
outside temperature is also critical in this regard. Your car
consumes more fuel in the winter than in the summer. •
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

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& WARNING (co ntinued )
• Do not apply additional underco ating or rustproofing on or
near th e exhaust manifold, exhaust pipes, catalytic converter or
heat shields. While driv ing, the substance us ed for undercoating
could overheat and cause a fire .
• Always read and heed all WARNINGS and other information
:::>page 278. •
Exhaust tail pipes
Road salt and other co rrosive materials w ill damage the mate rial in
t he exhaus t tai l pipes if they a re not cleaned regula rly. Do no t clean
t he ta il pipes wi th whee l cleaner, pain t po lish , chrome polish o r ot her
abras ive cleaners. C lean the ta il pipes w it h car care products that are
suitable for sta in less stee l.
Your authori zed Audi dealer can provide clean ing products that have
bee n teste d an d a pproved for your ve hicle.•
Care of interior
MMI display
- Clean th e MM I dis pla y w ith a so ft clean clot h and an LCD
cleane r.
T he MM I display ca n be cleaned with a professiona lly available "LCD
cl eaner". The cloth sho uld be sligh tly dampened with the cleaning
fluid to clean t he d isp lay.
0 Note
T o avoid scra tch ing the MMI display, you should never clean it dry .•
Safety first
MMI control console
- First clean t he MMI co ntrol console w it h a bru sh to
r e mov e dust from th e h ousin g.
- Then wi pe the MMI co ntrol co nsole w ith a clea n, soft,
slightly da mp c loth .
The MMI control conso le sho uld be clea ned with a brush first so that
no dirt is trapped betwee n the buttons and the ho usin g. We re com ­
mend g iv ing t he M MI co ntro l co nsole a final w ipe wi th a cloth mo ist­
ened w ith wate r and dish washing detergent .
0 Note
To prevent damage, make s ure that no fluid ever gets into the MMI
contr ol console. •
Aluminum trim
Use only neutral-pH products to remov e spo ts and deposits from
al uminum surfaces . Chrome care pro ducts and al ka line cleaners w ill
a tta ck al umi num su rfaces and c an damage them ove r time .
& WARNING
Always read and heed all WARNINGS and other information
=>page 278. •
Fabrics and fabric coverings
Fabrics and fabr ic coverings (e.g . seats , d oor trim p anels, et c.) s hou ld
be cleaned at regular interva ls with a vacuu m cleaner . T hi s removes
s u rface di rt part icles which co uld become embedded in the fabr ic _,,,
Vehicle care Technical data

Fuel supply and filling your fuel tank
Your vehicle fuel tank has an on-board refuelling vapor recovery
system . This feature helps to prevent fuel vapors from escaping from
the tank and polluting the environment while you refuel your vehicle.
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
ir regular supply of fuel can cause misfiring. Gasoline could enter the
exhaust system and damage the catalytic converter. •
Refuelling
Fig. 224 Right rear
vehicle side: Opening
the fuel filler flap Fig
. 225 Fuel cap
hooked on the opened
fuel filler flap
When adding fuel, the ignition and any cellular phones in the
vehicle must be switched
off. When activating the central
locking, the fuel filler flap is automatically unlocked or
locked. Refuel the vehicle with the ignition turned
off.
Taking the fuel cap off
- To open the fuel filler flap, press on the left side of the
flap ~ fig. 224 -arrow-.
- Unscrew fuel filler cap counter-clockwise and hang it on
the fuel filler flap~ fig. 225.
- Check the label on the inside of the fuel filler flap to deter­
mine if the vehicle must be fueled with gasoline or diesel
fuel.
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.

Fuel supply and filling your fuel tank
(I) Tips
• Runn ing your eng ine while refuelling may cause vapors to escape
or even cause fuel to spill out of the tank. This would then shut off the
fuel nozzle before the tank is full.
• Do not refuel your vehicle with the ignition turned on. The fuel
gauge may otherwise not ind icate the correct fuel level after refuel­
ling.
• Diesel vehicles* are equipped w ith a mechanism to prevent incor­
rect fueling. They can only be fueled with diesel pump nozzles. A
worn, damaged, or improperly specified nozz le may not allow this
mechanism to open, thereby preventing refueling. If you cannot
insert the pump nozzle, rotate it in the tank opening. This should
open the mechanism and allow refueling. •
Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the power
locking system should fail.
•
Fig. 226 Luggage
compartment: Prying
cover open Fig. 227
Luggage
compartment: Emer­
gency opening of fuel
fille r flap
- Remove the right -s id e trim panel with the aid of a screw ­
driver => fig. 226.
- Pull the loop down in the direc tion of the arro w to unlock
the fuel filler flap=> fig . 227. •
TDI clean diesel
App lies to veh icles: w ith diese l eng ine
General information
On TOI clean diesel vehicles, an urea solution (AdBlue®) is injected
into the exhaust system before a specia l catalytic converter to reduce
nitrogen emissions.
The Ad Blue is stored in a separate tank in the vehicle and f illed during
maintenance intervals. Under norma l driving conditions, there will be
enough Ad Blue to last from one maintenance interval to the next.
Because of this, the scheduled maintenance intervals should always
be followed.
The Ad Blue usage accounts for approximately 0.5% to 1 % of the
diesel fuel that is us ed. The Ad Blue tank capacity is approximately 6
gallons (23 liters). ..,_

___________________________________________ A_ l::.. p _h _a_ b_ e_t _ic _a_ l_ in_ d _ e_x __ _
Oil grades ...... ....... ..... .. .. . 303
Recommended oil check intervals ... 305
Specification and viscosity ......... 303
Engine oil level ...................... 40
Engine oil pressure
Malfunction ........ .... .. .. .. .. .. 36
Engine oil sensor defective ............. 40
Engine speed limitation ............... 40
Entry assist
Rear seats ......... ...... .. .. .. .. 91
Environment Break-in period .. .. .............. 265
Catalytic converter . .. ... ... .. ..... 266
Diesel particulate filter ... .. .. .. .. . 267
Disposing of your vehicle battery ... . 316
Driving at high speeds .......... .. . 268
Driving to minimize pollution and noise . 267
Fuel ............... ...... .. .. .. . 294
Fuel economy ............... ..... 267
Leaks under your vehicle .......... . 301
Letting the vehicle stand and warm up ..
268
Proper disposal of drained brake fluid 312
Proper disposal of drained engine coolant 310
Proper disposal of drained engine oil 306,
307
Recycling used engine oil ......... . 306
Unleaded fuel ........... .... .... 291
What should I do with an old battery? ...
316
EPC
See Electronic power control ........ 16
Controls and equip­
ment Safety first
ESP
See Electronic
stabHization program (ESP)
16
Event Data Recorder (EDR) . ... ..... ... 256
Exhaust tai l pipes
Cleaning ...................... .. 285
Expansion tank .. ........... .. .. .. .. 309
Explanation of some technical terms ... 270
Exterior lighting in the mirror housing . .. 70
Eyeglasses compartment .... ......... 109
F
Fall line ...... ...... .... .. .. .. ..... 270
Fan Four -zone automatic comfort air
conditioning ................... 119
Radiator ................ .. ... ... 311
Fastening Booster seats ............ ...... .. 241
Convertible child safety seats ..... .. 239
Infant seats .. ................... 238
Filler flap ... .. .. .. ..... ... .... ... .. 298
Flat tire Changing . ... ................... 343
Floor mats ....................... .. 196
Fog lights ................. .. .. .. .. . 69
Folding chocks .. ... ....... ......... 340
Folding master key with remote control .. 42
Foot pedals ..... .. ................. 196
For the sake of the environment
Gasoline fumes an d the env ironment 294
Letting your engine warm up .. ..... 127 Reducing engine
noise by early upshifting
10
Refueling ... .. .. .. .............. 294
Saving fuel by early upshifting ....... 10
Using the rear window defogger .... 115
Four-zone automatic comfort air conditioning 118
Automatic mode in rear . .......... 119
Heated rear seats ...... ..... .. .. . 122
Rear air distribution ..... .. .. .. .. . 119
Rear controls ............ ... .. ... 118
Rear fan ............ .... ... ..... 119
Rear operation ...... ...... .. .. .. . 121
Reartemperature ............. .. . 119
Synchron ization .. .. ............. . 120
T urning on/off ................... 118
Front airbags Description .. .. .... ............. . 215
How they wo rk ...... ...... .. .. .. . 220
Front fog lights .......... .... .. .. .. .. 69
Front seats ......................... 85
Adjusting ....................... 193
Child restraints in the front seat ... . 213
Frontal collisions and the laws of physics 202
Fuel Additives ................ ...... . 291
Blended gasoline ................. 291
Consumption ........ . ... ... .. ... . 26
Filler neck . .. .. ... ... .. ...... .... 293
Fuel gauge .. .... .. .. .. ........... 12
Gasoline ........... .. .. .. .... .. . 291
Gasoline additives .. .............. 292
Low fuel leve l . . . . . . . . . . . . . . . . . 12, 39
Octane rating ....... .. .... .. .. ... 291
Vehicle operation Vehicle care Do-it-yourself service Technical data