2009 AUDI Q7 check engine light

Table of contents
Table of contents
Vehicle literature ... ..... .
About this Owner's Manual .............. ...... . .
Controls and
equipment .. .. .... ..... ... . .
Inst rumen ts and con trols ..... .
Genera l ill ustration ............. .
Instruments and
warning/indica tor lig hts ....... .
Instruments .............. ..... .
Warning/indicator lights ... ..... .
Driver in forma tio n d isplay ..... .
Introduct ion ..... ...... ... ..... .
On-Board Diagnostic system (OBD)
Auto Check Control ............ .
Speed warning system ... ...... .
Trip computer ................. .
Tire pressure monitoring system ..
Op ening and closing .......... .
Keys ... ......... ... .. .... .. ... .
Powe r locking system .......... .
Rear lid ....................... .
Ch ild safe ty lock . ... ..... ... ... .
5
6
9
11
11
1 3
1 3
1 7
25
25
29
30
38
40
42
48
48 52
57
61
Convenience key .... ... .... ... .
Ant i-theft a larm system ........ .
Power w indows
Panoram ic s lid in g sunroof ..... .
Clear vision ... .... .. ... .. ... .. .
Lights ................ ... ... .. .
Interior lights ...... .. ... .... .. .
V is ion ... .. ............. ... .. . .
W iper and washer system ...... .
Mirrors .... ... ......... ..... . . .
Digital compass ............... .
Seats and sto rage .. ... ..... .. .
Genera l recommendat ions ..... .
Power seat ...... . .. ......... . .
Adjusting front passenger 's seat
manually .......... ........... .
Seat memory ...... ........... .
Rear seats .. ............... ... .
H ead res train ts ... ......... ... .
Arm res t .......... ........... .
Long center console ... ... .... . .
Luggage compartment .. ... .. . .
Roof rack ..................... .
Cup holder . ... ... ... ... ... .... .
As htray .... ... ............ ... .
Cigarette lighter/socket ....... . .
Storage .... ............... ... .
Warm and cold ............ .. . .
Climate control .. .. ....... .• ...
Rear A ir Condition ing ....... ... .
Basic settings . ... ... ... ... ... . .
Hea ted Sea ts ......... ... .... . .
On the road . ... ............ ... .
Stee ring ... .. .......... ..... .. .
Ignition lock and ignition sw itch .
61
63
64
67
73
7 3
78
80
81
86
89
92
92
93
96
97
98
101
103
103
10 4
1 12
1 14
1 16
1 17
119
123
123
131
134
136
140
140
142 Starting and stopping the engine
Sta rting and stopping the eng ine
w ith Convenience key .... ..... . .
Parking brake ................. .
S ta rt ing on h ills ..... .. ... ... .. .
Cruise control .......... ... ... . .
A dap tive Cruise Control ....... .
Speed and dis tance con trol system
Driver information ............. .
System limitations .. ...... .... . .
Audi brak ing guard ........... . .
A udi lane assist ............... .
Lane assist ...... ... ... ...... . .
Audi side ass is t .. .. ... .... .... .
Lane Change Assistant .. ..... .. .
Notes ..... ........ .... ...... . .
Automatic transmission ....... .
tiptronic® (6 -speed automatic
transm ission) .......... ....... .
Advanced Pa rking System .... .
Advanced Parking System with rea r
view camera .................. .
Specia l par king sit uations ..... . .
Towing hitch .. ..... .... ... ... . .
Settings in the MMI .. ... .. ..... .
Safety t ips ................... . .
Adaptive Air Suspension ... .. . .
Air suspension and damping
Home link® .... .... ... .. ...... . .
Universa l remote control ... .... .
143
144
147
148
149
152
152
160
165
168
171
171
174
17 4
181
18 4
184
191
191
199
201 201
20 4
206 206
2 14
2 14

Instruments and controls
General illustration
G)
0
©
©
©
©
0
©
©
Door handle
Memory buttons (driver's seat)
Power locking switch
Side assist button .. ....... .. .... .... .... ... ... .
Power window switches .......... ..... .. .... ... .
Adjuster control for outside mirrors ...... .... .... .
Air outlets .. ...... ..... ........ .... .... .. ..... .
Light switch ...... .. ... ... . .. .. ..... ... .... ... .
Control lever for:
- Turn signal and high beam
- Lane assist ................. ........... ..... .
@) Control lever for:
-Cruise control
- Adaptive Cruise Contro l .... ... ..... .... .... .. .
@ Multifunction steering wheel with:
- Horn
- Driver's airbag .............................. .
- Shift buttons ............. ........ ... .... ... .
- Button for steering wheel heating
@ Instrument cluster ... .... ....... ...... ......... .
@ Switches for :
@
@
-Windshield wiper/washer ... .... .... .... ... ... .
- Trip computer ..... .. .... ......... ... ....... .
Steering lock/ignition /starter switch
Buttons for:
- Advanced Parking System .......... .......... .
- Reset button for trip odometer . .... .... .... ... .
Controls and equip ­
ment 97
55
174
64
88
130 73
77
171
149
152
245 189
138 13
81
40
142
191
15
Instruments and controls
-!CHECK] .......... ........ ... .... .... ..... . .
- Instrument lighting ......... .... ....... .... .. .
@ MMI Display 11
@ Buttons/Indicator light for:
- Elec tronic Stabilization Program (ESP) .. ..... .. . .
- Emergency flashers ............. ....... ...... .
- PASSENGER AIR BAG OFF
@ Buttons for:
- Switching MMI display on/off
- Valet key function . ........ .... .... .......... .
- Unlocking glove compartment .............. ... . 16
17
288 76
51
119
@ Glove compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
@) Front passenger's airbag . . . . . . . . . . . . . . . . . . . . . . . . 245
@ CD player/CD changer
@ Climate controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
@ Shift lever for automatic transmission . . . . . . . . . . . . . 184
@ Ashtray and cigarette lighter .. .... ............... 116, 117
@ 12-volt outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
@ MMI Terminal
@ Storage compartment
@ [START ]-~STOP ] button . . . . . . . . . . . . . . . . . . . . . . . . . 144
@ Adjustable steering whee l, depending on equipment :
- mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
- electrical . ........ .... ... .. .... .... ...... ... .
@) Data Link Connector for On Board Diagnostics (OBD Ill
@ Pedal for operating parking brake ...... .... ...... .
@ Engine hood release ...... .... .... .... ...... ... . 140
29
147
330 ...
11 Depending on how the vehicle is equipped the presentation in the MMI dis ­
play may be multi -color or bi-co lor. As both presentations are almost iden­
tical , the multi -color versions are used in this operating manual.
I • •

Instruments and warning/indicator lights
Warning light in the instrument cluster -t
When the _L warning light in the instrument cluster starts to flash,
this can mean one of two things: either the coolant
temperature is
too high, or the coolant
level is too low~ page 33.
If the needle is well in the upper area of the gauge, the coolant
temperature is too high.
Stop the vehicle, switch the engine off and
allow the engine to cool.
If the warning light comes on again after
driving a short distance, contact an authorized dealer.
& WARNING
• Always observe the warning in ~ page 324, "Engine compart­
ment", before opening the hood and checking the engine coolant
level.
• Never open the engine hood if you see or hear steam, or if you
see engine coolant dripping from the engine compartment . You
could burn yourself. Let the engine cool off first so that you cannot
hear or see any steam or engine coolant.
0 Note
• Mounting additional lights or accessories in front of the air inlets
reduces the cooling effect of the radiator. At high outside tempera­
tures or high engine load, the engine could overheat.
• The front spoiler has been designed to properly distribute the
cooling air when the vehicle is moving. If the spoiler is damaged,
this could reduce the cooling effect and the engine could then
over­
heat. Ask your authorized Audi dealer for assistance. •
Tachometer (engine rev counter)
The tachometer indicates the engine RPM (revolutions per
minutes).
The tachometer 0 ~ page 13, fig. 2 is the left of the two large clock ­
type displays. The
engine turns at a speed
1,000 times the single digit in the
display, e.g. if the needle is pointing at the "2" the engine is turning
at 2,000 RPM.
If engine RPM drops below 1,500, you should downshift to the next
lower gear. The red area at the end of the scale indicates maximum
permissible engine RPM after the break -in period. Before reaching
this area, move the selector lever to position "D (Drive)" or ease your
foot off the accelerator pedal.
0 Note
The tachometer needle should not move into the red range. If it
does, then only for a
very short period of time. You could damage
your engine by driving at high RPM .
'£> For the sake of the environment
Upshifting early saves fuel and reduces engine noise.•
Digital clock with date display
Date and time of day can be set in the MM/.
Fig . 3 Instrument
cluster with digital
clock
The date, time of day, and time and date format can be set in the
MMI. You can find out more in the MMI 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. •

Instruments and warning/indicator lights
" Canada models:
Airbag system
Tire pressure monitoring system
¢ Left turn signal
Trailer turn signal assembly* Malfunction Indicator Lamp
(Mill
/: Lane assist (system is ready) *
Lane assist (system is not ready)*
Safety belt
Adaptive Air Suspension*
c.::, Adaptive Air Suspension*
-
D II
High beam
Right turn signal
CRUISE " USA models:
Cruise control activated
-Canada models:
Cruise control activated
USA models:
Anti -lock brake system (ABS) defec­
tive
=> page 19
=> page20
=> page20
=> page20
=> page 20
=> page 21
=> page 21
=> page 21
=> page 21
=> page 21
=> page22
=> page20
=> page22
=> page 22
=> page22
-
-
-
PARK
BRAKE
(® )
Canada models:
Anti-lock brake system (ABS) defec­
tive
USA models: Parking brake
Canada models: Parking brake
----·--USA models: Brake malfunction
BRAKE
((D ) Canada models:
Brake malfunction
=> page 22
=> page23
=> page 23
-=> page23
=> page 23
Vehicles with the Adaptive Cruise Control * have the following addi ­
tional check lamps:
II II c;::::::::::, Open road
--c;::::::::::, 11 11 c;::::::::::, D r i v i n g i n t raff i c
c;::::::::::, 11 11 c;::::::::::, R e q u e st f o r d r i v e r to
assume control
& WARNING
=> page 161
=> page 161
=> page 161
• Failure to heed warning lights and other important vehicle
information may result in serious personal injury or vehicle
damage.
• Whenever stalled or stopped for repair, move the vehicle a safe
distance off the road, stop the engine, and turn on the emergency
flasher
=> page 76 .
• The engine compartment of any motor vehicle is a potentially
hazardous area. Before you check anything in the engine compart-
ment, stop the engine and let it cool down. Always exercise
~

& WARNING (con tinued)
ext reme caution when worki ng un der th e hood => pa ge 32 4,
"Engin e comp artm ent ".
[ i ) Tips
Many functions are monitored by the Auto -Check system
=>
page 30. Malfunctions or faults wil l be identified either with a red
symbo l (pr ior ity 1 -Danger!) or with a yellow symbol (priority 2 -
Warning). •
Electronic power control r
This warning/indicator light monitors the electr oni c
power control.
The warning/indicator light (E lectronic Power Control) illumi -
nates when you turn on the ignition as a function check .
[ i ) Tips
If this warning/indicator light illumi nates whi le you are driving, then
there is a malfunction in the engine electronics . Have the malfunc ­
tion corrected as soon as possible by your authorized Audi dealer or
qualified workshop .•
Electronic stabilization program (ESP) ~
This warning/indicator light monitors the electronic stabi ­
lization program .
The warning/indicator light has the following functions:
• It blinks while you are dr iving when the ESP is working.
• It illuminates when you switch on the ignition for approximately
2 seconds as a function check.
Controls and equip ­
ment
In st rum ent s a nd w arnin g/indi cato r ligh ts
• It illuminates when there is a malfunction in the ESP .
• It illumina tes when ESP or ASR (Anti -Sl ip Regulat ion) is deact i­
vated .
• It illuminates if there is a malfunction in the ABS, since the ESP
is part of the ABS system.
If the battery termina ls were disconnected and re -connected, the
vehicle was jump started or the battery is
very weak, the ESP senso r
system goes through a learn ing process for the first few yards . The
warning/indicator light i lluminates . The warning/indicator light
goes out as soon as the learning process is complete.
If the ESP warning/indicator light i lluminates and stays on after you
have started the engine, this may mean that the control system has
temporarily switched off the ESP. If this is case, you can reactivate
the ESP by turning the ignition off and then on again. The
warning/indicator light should go out to show that the system is
fully functional again.
For more information about the ESP=>
page 288. •
Airbag system
~i (USA models) / !_~-(Canada models)
This warning/indicator light monitors the airbag and the
tensioner systems .
The i (USA models) f! lt (Canada models) warning light i lluminates
for a few seconds each time you switch on the ignition.
I f the
ffl (USA mode ls) l! go out, or if it illuminates whi le you are driving, or if it starts to blink,
then there is a malfunction somewhere in the system. If the light
does not illum inate when you switch on the ignition, this also
means there is a malfunction. ..,_
I • •

Instruments and warning/indicator lights
& WARNING
If you have a malfunct ion in the airbag system, contact your autho­
rized Audi dealer immediately. Otherwise the airbag or the belt
tensioner may not work properly in an accident. •
Tire pressure monitoring system -telltale
indicator lamp '-)
The warning/indicator light appears in the event of a
significant loss of air pressure .
The ( warning/indicator light il luminates for a few seconds after
the ignition is turned on as function check and then goes out.
If the symbo l appears, pressure is too low in at least one tire.
When the system detects a malfunction, the warning/indicator light
will flash for approximately one minute and then remain continu­ ously i lluminated . This sequence wi ll continue upon subsequent
vehic le starts up as long as the malfunction exists. Contact your
authorized Audi dealer and have the malfunction corrected .
For more information
=> page 44. •
Turn signals ¢ Q
The indicator light blinks when you use either turn signal.
Whenever you use the left ¢i or the right¢ turn signal, the ind icator
light blinks. When you use the emergency flashers, both indicator
lights flash .
If one of the turn signal light bulbs burn out, the turn signal will
blink twice as fast as normal.
This does not apply, however, in towing mode . The indicator light
does not flash if a turn signal is out on the trailer or the towing
vehic le. Additional information on the turn signa ls=>
page 77 . •
App lies to vehicles: wi th tow ing h itch
Trailer turn signal assembly ¢ 19
The indicator light also blinks if the turn signal is operated
when towing a trailer.
The indicator light ¢1i> bl inks when the turn signal is used, if a trailer
has been properly connected to the vehicle.
If one of the turn signa l bu lbs on the trailer is burned out or defec ­
tive, the indicator light will not b link when you use the turn signals.
[ i ] Tips
For vehicles with a factory installed towing hitch or a trailer hitch
that was installed later according to factory specifications, the
trailer turn signa l assembly is actuated. •
Malfunction Indicator Lamp (MIL) :,
The Malfunction Indicator Lamp (MIU is part of the On-Board Diag ­
nostic (OBD II) system. The symbo l lights up when the ignition is
turned on and will turn off after the engine has started and has
settled at a constant idle speed . This indicates that the MIL is
working properly.
The warning light il luminates when there is a malfunction in the
engine electronic system. Contact your authorized Audi dealer and
have the malfunction corrected.
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
=> page 327.
For more information => page 29. •

Malfun ction in the ele ctroni c diff erential lo ck (EDL )
The EDL wor ks to get her w ith t he ABS . T he ABS warn ing l ig ht will
come on if there is a ma lfunction in the EDL system=> page
290. See
you r author ized Aud i dea ler as soon as poss ible.
& WARNING
• If the J.. S (USA models l/ .J (Canada models ) warning light
does not go out , or if it comes on while driving , the ABS system is
not working properly. The vehicle can then be stopped only with
the standard brakes (without
ABS) . You will not ha ve the protec­
tion ABS provides. Contact your authorized Aud i dealer as soon a s
possible.
• USA model s: If the
BRAKE warning light and the B" warning
light come on together , the rear wheel s could lock up fir st under
hard braking . Rear wheel lock-up can cause loss of vehicle control
and an acc ident. Have your vehicle repaired immed iately by your
authorized Audi dealer o r a qualified workshop . Drive slowly and
avoid sudden , hard br ake applications .
• Canada models: If the brake warning light ID and the ABS
warning light come on together, the rear wheels could lock up
first under hard br aking . Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme ­
diately by your authorized Audi dealer or a qualified workshop .
Drive slowly and avoid sudden , hard brake applications. •
Parking brake
~E (USA models) /(®) (Canada models)
T he in dicat or li ght m onito rs the parking broke.
When the park ing brake is app lied and the ignition is switched on,
the indicator lig ht comes on
©l . The indicator light must go out
whe n the park ing brake is released. •
Controls and equip ­
ment
Instruments and warning /indi cator lights
Brake system BRAKE (USA models ) /(©) (Canada
models)
T he warning/indicator light fl ashe s if br oke flui d level is
low, if there is on A BS sys tem m alfunc tion o r a parkin g
br oke malfunction.
The lig ht illu min a tes w hen the igniti on is tur ned o n. I t goes out after
the engine has been started. Th is indicates that the brake warning
ligh t is functioni ng prope rly.
If the br ake warning light does not light up when the engine is
cranking , there may be a malfunction in the electrical system . In this
case , contact your Audi dealer .
I f the brake system warning/indicator light f lashes, there is a brake
sys tem malfunc tion. By p ressing t he
I CHECK ] button, you can br ing
up a driver message which explains the malfunction in more detail
=> page
32.
If the ABS fa ils, t he ABS warn ing/i ndicator light,.. (USA
mode ls)/ (Canada mode ls) flashes together with the brake system
warn ing/ind icator light~ .&,.
(USA models): If the warning light
BRAKE and the warning light,,.
il lumina te toge the r, im media tely co ntact y our auth orized Au di
dea ler or qua lified workshop to have all brake pads inspected
~ page 37.
W hen the l ight comes on, an audib le warni ng signal is a lso given.
& WARNING
• USA model s: If the BRAKE warning light and the warning
light come on together, the rear wheels could lock up first under
hard b raking . Rear wheel lock -up can cause loss of vehicle control
and an accident . Have your veh icle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden , hard brake appli cations . .,_
I • •