catalytic converter AUDI Q7 2009 Owner´s Manual

Instruments and warning/indicator lights
gallons (10-12 liters) of fuel left. This message is meant to remind
you to
refuel.
The total tank capacity of your vehicle is listed in~ page 399 .
0 Note
Never run the tank completely dry. An irregular supply of fuel can
cause engine misfiring and fuel could enter the exhaust system. The
catalytic converter could then overheat and be damaged. •
[ CHECK] button
You can perform different functions with this button.
Fig. 5 CHECK button in
the instrument cluster
The [ CHECK I button performs the following functions:
Switching on the clock and odometer
With the ignition turned off, the odometer reading and the digital
clock with date display can be switched on for about 30 seconds by
pressing the !CHECK ] button ~ fig. 5.
Starting the Auto-Check sequence
The Auto-Check system~ page 30 constantly monitors certain indi­
vidual functions and components of the vehicle when the ignition is
turned on and when the vehicle is moving. With the ignition turned on, you can start the "Auto-Check
sequence" by pressing the
I CHECK] button. You can perform an
Auto-Check sequence when the vehicle is stationary and the ignition
is turned on or when the vehicle is moving not faster than 3 mph
(5 km/hl.
The number of keys programmed to the vehicle is also displayed.
The display
3\3 indicates that three keys have been programmed.
This allows you to make sure you have received all of the keys when
you purchase a used vehicle.
For example, if you only receive two keys, you should take those
keys to your authorized Audi dealer to have the missing key deacti­
vated so it cannot be used. You should also report the missing key
to your insurance company.
Calling up the driver information
A yellow or red symbol appears in the instrument cluster display,
usually with a driver message. The driver message display disap­
pears after about 5 seconds. The driver message can be displayed
again by briefly pressing the
I CHECK I button.
Setting the speed warning
By pressing the I CHECK] button briefly, you can set threshold 1 of
the speed warning while you are driving~
page 39. By maintaining
pressure on the [ CHECK] button, you delete the warning
threshold. •

On-Board Diagnostic system (08D)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIU ~ in the instrument cluster
~ page 17, fig. 7 is part of the On-Board Diagnostic (OBD ID system.
The warning/indicator light illuminates when the ignition is
switched on and goes out after the engine starts and the idle has
stabi lized . This indicates 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 malfunction may exist in the engine system.
If the light starts flashing, the catalytic converter could be damaged.
Continue driving
with reduced power (avoiding sustained high
speeds and/or rapid accelerations) and have the condition
corrected. Contact your authorized Audi dealer.
If the light illuminates, the electronic speed limiter may also be
malfunctioning . For more information~
page 29, "Electronic speed
limiter".
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
~ page 327. •
On-Board Diagnostics
Con tro ls and eq uip­
ment
Fig . 16 Location of
Data Link Connector
(D LC )
Driver information display
On-Board Diagnostics monitors the components of your emission
control system. Each monitored component in your engine sys tem
has been assigned a code. In case of a malfunction, the component
wil l be identified and the fault stored as a code in the control
module memory .
The M IL 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
~ page 327.
In order to make an accurate diagnosis, the stored data can only be
d isplayed using special diagnostic equipment (generic scan tool for
08D).
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the hood release~ fig. 16.
Your authorized Audi dealer or qualified workshop can interpret the
code and perform the necessary repair. •
Electronic speed limiter
Your vehicle may be factory equipped with tires that are rated for a
maximum speed of 130 mph (210 km/h). This is less than the
maximum speed of your vehicle. 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 359.
If the engine control unit receives faulty vehicle roadspeed signa ls,
the Malfunction Indicator Lamp (MIU will i lluminate . If this
occurs, contact the nearest authorized Audi dealer for assistance. .,.
Vehicle care I I Technical data

• ..__A_ u_ t _o_ m_ a_ t_ i_ c _ t_r _a _n_ s_ m_ is_ s_io _ n ________________________________________________ _
Select R only when the vehicle is at a full stop and the engine is
running at idle speed=>
& in "Driving the automatic transmission"
on
page 184.
Before you move the selector lever to R, press both the button in the
handle of the selector lever
and the brake pedal at the same time.
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 this position. Shift to this position
for standing with the brakes applied =>
page 186 .
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and while moving the
lever out of
N.
D -Normal position for driving forward
Position Dis 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 stationary or at speeds below 3 mph (5 km/h),
you must always apply 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 manually select gear ratios to
match specific driving conditions=>
page 788.
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 achieve live­
lier acceleration.
When the vehicle is stationary 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 184.
0 Note
Coasting downhill with the transmission in N and the engine not
running will result in damage to the automatic transmission and
possibly the catalytic converter. •
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you against acciden­
tally shifting into a forward or the reverse gear and
causing the vehicle to move unintentionally.
Fig. 199 Shift gate:
selector lever lock
positions 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. 199 with your thumb until you have moved the
selector lever to the desired position.
~

___ D_ r_iv _ in_... g"'- a_ n_ d_ e_ n_ v_i_r _o _n_ m_ e_n_ t _______________________________________________ _
New brake pads
--
Remember that new brake pads do not have a full braking
effect during the first 250 miles (400 kilometers) after they
are installed .
New brake pads have to be "burnished in" before they have optimal
grab =>& .
During the break -in period, you should avoid putting severe loads
on the brakes . Severe loads include, for examp le, sudden hard
braking, in particular at very high speeds or, for example, 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 kilome­
ters) of normal city driving. You can compensate for this by
pressing the brake pedal more firmly . This also applies later when
new pads are installed.
:J
Catalytic converter
It is very important that your emission control system
(catalytic converter) is functioning properly to ensure that
your vehicle is running in an environmentally sound
manner.
- Always use lead-free gasoline:=> page 325, "Fuel supply".
- Never run the tank down all the way to empty.
- Never put too much motor oil in your engine ==>
page 336,
"Adding engine oil 't=:;r\11
•
Never try to push- or tow-start your vehicle.
The catalytic converter is an efficient "clean-up" device built into the
exhaust system of the vehicle. The catalytic converter burns many
of the po llutants in the exhaust gas before they are released into the
atmosphere.
The exclusive use of unleaded fuel is critically important for the life
of the catalytic converter and proper functioning of the engine.
& WARNING
• Do not park or operate the vehicle in areas where the hot
exhaust system may come in contact with dry grass, brush, fuel
spill or other material which can cause a fire .
• Do not apply additional undercoating or rustproofing on or
near the exhaust manifold, exhaust pipes, catalytic converter or
heat shields. During driving, the substance used for undercoating
could overheat and cause a fire .
0 Note
• Be aware that just one tank filling with leaded fuel will alr eady
seriously degrade the performance of the catalytic converter.
• Do not exceed the correct engine oil level=>
page 336.
• Do not drive until the fuel tank becomes completely empty. The
engine could misfire. Unburned fuel could also get into the exhaust
system and this could cause the catalytic converter to overheat.
• Do not turn off the ignition while the vehicle is moving.
• Do not continue to operate your vehicle under these conditions,
as otherwise fuel can reach the catalytic converter. This could result
in overheating of the converter, requiring its replacement .
• To assure efficient operation of the Emission Control System:
- Have your vehicle maintained properly and in accordance with
the service recommendations in your Warranty
& Maintenance
booklet. •

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 gallon (30-40 1/100km) . After about a
half a mile, fuel economy climbs to 12 mpg (201/100 kml. 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 should avo id short tr ips whenever possible.
The 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
Driving
and environment
Vehicle care Do-it-yourself service Technical data

Fue l supply and fillin g you r fu el tank -___________ ...:._:......:,_______;::;...a,__ __
•
Fuel supply and filling your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fuel r ecomm end ati on
The fuel recommended for your vehic le is unl eade d prem ium grade
gaso line . See also ~
page 399, "Data". Audi recommends using TOP
T IER Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON). For more information on TOP TIER Detergent Gaso line, please
go to the official website (www.toptiergas .com).
The recommended gasoline octane rating for your engine can also be found on a label located on the inside of the fuel fille r flap. This
rating may be specified as AK I or RON .
Your vehic le may also be operated us ing unleaded regular gasoline
with a minimum octane rating of 87 AKl/91 RON . However, using 87
AKl/9 1 RON octane fuel will slightly reduce engine performance.
Use unle ad ed ga so line only . Unleaded gaso line is avai lable
throughout the USA, Canada, and in most European countries. We
recommend that you do not take your vehicle to areas or countr ies
where un leaded gasoline may not be available .
For more information on refueling your vehicle, see~
page 326.
Octane ra tin g
Octane rating indicates a gaso line's ability to resist engine
damaging "knock" caused by premature ignition and detonation.
Therefore, buying the correct grade of gaso line is very important to
help prevent possible engine damage and a loss of engine perfor ­
mance. Gasoline most common
ly used in the United States and Canada has
the following octane ratings that can usua lly be found on the filler
pump:
• Premium Grade : 91 -96 AKI
• Regular Grade: 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti Knock Index= (R +M)/2 = (RON +MON)/2
RON = Research Octane Number
MON
= M otor Octane Number .
0 Note
• Do not use any fue l with octane ratings lower than 87 AKI or 91
RON otherwise expensive engine damage will occur .
• Do
not use leaded gasoline. The use of leaded gasoline w ill
severe ly damage your vehicle's catalytic converter and its abi lity to
control exhaust emissions. •
Blended gasoline
Use of g aso line containing alco hol or M TB E ( meth yl
t er tiary butyl e ther )
You may use unleaded gasoline blended with alcohol or MTBE
(commonly referred to as oxygenates) if the blended mixture meets
the follow ing criteria:
Bl end of g asoline m eth anol (wood al coho l or methyl alc oh ol)
• Anti-knock index must be 87 AKI or higher .
• Blend must contain no more than 3% methanol.
• Blend must contain more than 2% co-solvents.
Vehicle care I t •

__________________________________________________ C_ o_ n_ s_ u _m _ e_ r_ l_n _f _o _ r_ m_ a_ t_io _ n __ lJIII
Consumer Information
Warranty coverages
Y o ur A udi i s covere d by the f ollowi ng wa rrant ie s:
• New Vehicle Limited Warranty
• Limited Warranty Against Corrosion Perforation
• Emissions Control System Warranty
• Emissions Performance Warranty
• California Emissions Control Warranty (USA vehicles only)
• California Emissions Performance Warranty (USA vehicles only)
Detai led information regarding your warrant ies can be found in
your
Warr anty & M aintenan ce book let .•
Operating your vehicle outside the
U.S .A. or Canada
Government regulations in the United States and Canada require
t hat automobiles meet specific emission regulations and safety
standards . T herefore, vehicles built for the U.S .A . and Canada differ
from vehicles so ld in other countries .
If you plan to take your vehic le outside the continental limits of the
United States or Canada, there is the possibi lity that
• unleaded fue ls for vehicles w ith catalytic converter may not be
avai lable;
• fue l may have a considerably lower octane rat ing . Improper fuel
may cause engine damage;
• serv ice may be inadequate due to lack of proper service faci lities ,
tools or testing equipment;
• replacement parts may not be readily available .
Controls and equip­
ment Safety first Vehicle operation
•
Navigation systems for vehicles built for the U.S.A . and Canada
wil l not necessarily work in Europe, and may not work in other coun ­
tries ou tside Nor th America.
0 Note
Audi cannot be responsible fo r mechanica l damage that could
resu lt from inadequate fuel, service or parts availability. •
Audi Service Repair Manuals and
literature
Audi Official Factory Service Manuals are published as soon as
poss ible after model introduction . Serv ice manuals are ava ilab le
from :
Audi Technical Literature Ordering Center
Call toll -free :
Te l.:
1 (800) 544-8021
(from 8:00 AM to 8 :00 PM, EST, Monday through Friday)
or access their website
www .audi .dd sltd .com on the Internet to
order repair manuals and other Aud i literature .•
Maintenance
Gen era l
Your vehicle has been designed to he lp keep maintenance require ­
ments to a minimum . However, a certain amount of regular mainte ­
nance is sti ll necessary to assure your veh ic le's safety, economy and .,
Vehicle care Do-it-yourself service Tec hn ica l da ta

___ A_l.:,. p _h_ a_ b_e _t _ic _ a_l _in _ d_e _x ____________________________________________ _
Brake fluid
Changing the brake fluid ... ... ... .
341
Checking the brake fluid level . . . . . . 341
Reservoir ...... .. .... .... ....... 341
What is the correct brake f luid level? 341
What should I do if the brake fluid warning
light comes on? ........ .... ....
341
Brake light
Defective . . . . . . . . . . . . . . . . . . . . . . . .
27
Brake system ....................... 341
Anti-lock brake system . . . . . . . . . . . . . 22
Brake fluid . . . . . . . . . . . . . . . . . . . . . . 341
Brake f luid specifications for refill and
replacement ...... ...... ...... .
341
Brake pads ..................... . 298
General information . . . . . . . . . . . . . . 291
How does moisture or road salt affect the
brakes? ..... .... ....... .... ...
291
Malfunction ........ ... .. .... .... . 32
Park ing brake . . . . . . . . . . . . . . . . . . . . 147
Warning/indicator lights ... ...... .. 23
Worn brake pads symbol . . . . . . . . . . . 37
Braking guard
See Audi braking guard ... ... .... . 168
Break-in period . . . . . . . . . . . . . . . . . . . . . 297
Brake pads .... .................. 298
Tires .... ... .. .... .... ......... . 297
Breakover angle . . . . . . . . . . . . . . . . . . . . 302
Bulbs ..... ....... .. .... .... ...... . 385
Bumper cover
Caution when parking near a parking bar -
rier or curb .. ... ..... ........ ..
147
C
Ca lifornia Proposition 65 Warning 332
Battery specific .... .... .... .... .. 344
Capac,t,es ... .............. ...... .. 399
Car -Systems
Background lighting . ...... .... ....
79
Lighting profiles . . . . . . . . . . . . . . . . . . 79
Car care ........................... 312
Interior .... .... .... .... ....... .. 319
Plastic and vinyl ........... ... ... 316
Weatherstrips ... .. .... .... ...... 317
Care of exterior ..................... 312
Cargo area
See Loading the luggage compartment . .
227
Cargo floor ......... .... ........ ... 109
Cargo net . . . . . . . . . . . . . . . . . . . . . . . . . .
107
Catalytic converter .. ....... ........ . 298
Center conso le in rear
Central locking 103
Emergency locking ............ .... 57
Panoramic s liding sunroof ...... .... 69
Certification . . . . . . . . . . . . . . . . . . . . . . . . 404
Changing a flat tire .... .... ....... ... 373
Changing a wheel ................... 373
Changing engine oil ... ........ ...... 336
Chassis
Undercoating ... .. .... .... .... ...
318
See also Adaptive Air Suspension . .. 206
CHECK button . . . . . . . . . . . . . . . . . . . . . . . 16
Checking
Engine coolant level
338
Checking tire pressure ............. .. 353
Child restraints
Danger of using ch ild restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . .
243
What types of child restraint anchors are
available? ... ......... ......... .
276
Where can I get additional information
about child restraints? .... .... .. .
277
Child safety .................... 263, 268
Additional information .. ... .... ... 282
Booster seats . . . . . . . . . . . . . . . . . . . . 271
Convertible child safety seats ... ... 269
Convertible locking retractor .... ... 273
Guidance fixtures for lower anchorages ..
279
Important safety instructions for using
chi ld safety seats ...............
266
Important things to know when driving
with children .. .... ... ..... .....
263
Infant seats ......... ........ .... 268
Install ing a child restraint using the
LATCH system .. ...... ....... ...
281
Lower anchorages ... .. .... .... ... 278
Mounting and releasing the anchorage
hook ..... ........ .... ....... ..
282
Older children and safety belts 272
Safety belts and older children ..... 272
Tether anchors .. ...... .... ...... 282
Tether strap ... .... .... ...... .... 283
Which restraint system should my older
chi ld wear? ... ....... .... .... ..
272