2009 AUDI Q7 check engine light

Driver messages and yellow symbols
If a yellow symbol appears in the display, a driver message is also
displayed automatically.
For example, the symbol appears in the display, indicating low
windshield washer fluid level. The following message also appears:
Please top up washer fluid
The driver message disappears after a few seconds. The driver
message can be displayed again by briefly pressing the
I CH ECK]
button. •
Red symbols
A red symbol means DANGER.
-Pull off the road.
- Stop the vehicle.
Turn off the engine.
Fig . 18 Display: engine
coolant level warning
(priority 1)
- Check the malfunctioning system. Contact your autho­
rized Audi dealer or a qualified workshop for assistance.
Red symbols indicate a priority 1 malfunction -Danger!
Con tro ls and eq uip­
ment
Driver information display
With a priority 1 malfunction, a large symbol appears in the center
area of the display => fig. 18. When the symbol appears,
three
warning tones sound in succession. The symbol continues to blink
until the malfunction has been repaired.
If there are
more than one priority 1 malfunctions, the symbols
appear one after the other for about 2 seconds.
An additional driver message can also be displayed by briefly
pressing the
! CHECK ] button.
The red symbols mean:
0
BRAKE

[ i] Tips
Alternator malfunction
USA models:
Brake system malfunction
Canada models:
Brake system malfunction
Engine coolant level too
low/engine coolant temperature
too high
Engine oil pressure too low
Faulty steering
Faulty ignition switch
=> page32
=> page 32
=> page32
=> page33
=> page 33
=> page 34
=> page 34
• If the warning/indicator light BRAKE (USA models)/ © (Canada
models) in the instrument cluster flashes, there is a brake system
malfunction. By pressing the
I CH ECK] button, you can bring up a
driver message which explains the malfunction in more detail.
Please note
=> page 32. ..
Vehicle care
I I irechnical data

Driver information display
• Speed warnings threshold 1 8 (USA modelsl/8 (Canada
models) and threshold
2 e , (USA modelsl/ 8 (Canada models) are
also shown as red symbols. The warning is always shown as a small
symbol in the upper area of the display=>
page 38. •
Alternator malfunction 0
If the O symbol in the instrument panel display flashes, then there
is a malfunction in the alternator or the vehicle electronics. A
warning to the driver will appear, too. The driver warning goes out
after about
5 seconds, but it can be brought up at any time by
pressing the
( CHECK ] button again.
Usually, you can still drive to the next dealership. Turn off all but the
most necessary electrical consumers, since these drain the vehicle's
battery.
0 Note
If the _t warning symbol (coolant system malfunction) also lights
up on the instrument panel during the trip=>
page 33, then you
have to stop immediately and turn off the engine. The coolant pump
is not working anymore -danger of damage to the engine! •
Brake system malfunction
A malfunction in the brake system must be repaired as
soon as possible.
If the warning/indicator light BRAKE (USA models)/ (©)
(Canada models) in the instrument cluster flashes, there is
a brake system malfunction. By pressing the [ CHECK]
button, you can bring up a driver message which explains
the malfunction in more detail.
Stop vehicle and check brake fluid level
-Pull off the road.
- Stop the vehicle.
- Turn off the engine.
- Check the brake fluid level=>
page 341.
-Contact your nearest authorized Audi dealer or qualified
workshop if necessary.
Warning! Fault in ABS brake system. Contact
workshop
- Drive carefully to the nearest authorized Audi dealer or
qualified workshop and have the malfunction corrected
=> & .
If the ABS system malfunctions, the ABS warning/indicator light illu­
minates together with the brake system malfunction warning/indi­
cator light=>& .
& WARNING
• Always observe the warnings in => page 324, "Engine compart­
ment", before opening the hood and checking the brake fluid .
• Driving with low brake fluid is a safety hazard. Stop the car and
get professional assistance .
• USA models: If the BRAKE warning light and the .-..-warning
light come on together, the rear wheels could lock up first under
hard braking. Rear wheel lock-up can cause loss of vehicle control
and an accident . Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models: If the brake warning light and the ABS
warning light come on together, the rear wheels could lock up
first under hard braking. Rear wheel lock-up can cause loss of _.,

& WARNING (continued)
vehicle control and an accident. Have your vehicle repaired imme­diately by your authorized Audi dealer or a qualified workshop.
Drive slowly and avoid sudden, hard brake applications. •
Engine cooling system malfunction -L
A mo/function in the engine cooling system must be
repaired as soon as possible.
When the _ t symbol in the display blinks, then either the
engine coolant temperature is too high, or the coolant level
is too low. An additional driver message can also be
displayed by pressing the [ CHECK] button:
Switch off engine and check coolant level
- Pull off the road .
- Stop the vehicle.
- Turn off the engine.
- Check coolant level => page 338.
- Add coolant if necessary => page 339.
- Continue driving only after the engine coolant
warning/indicator light goes out.
- Contact your authorized Audi dealer for assistance if
necessary.
If the engine coolant level is correct, then the radiator fan may be
the cause of the malfunction.
If the O warning symbol (alternator malfunction) also lights up on
the instrument panel~
page 32, then the fan belt may be damaged .
Controls and equip ­
ment
Driver information display
& WARNING
• If your vehicle should break down for mechanical or other
reasons, park at a safe distance from moving traffic, turn off the
engine and turn on the hazard warning lights
~ page 76, "Emer­
gency flasher
A".
• Never open the hood if you see or hear steam or coolant
escaping from the engine compartment -you risk being scalded.
Wait until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerous area.
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool. Follow the warning stickers
~ page 324, "Engine compartment".
0 Note
Do not continue driving if the _f_ symbol illuminates. There is a
malfunction in the engine cooling system -you could damage your
engine. •
Engine oil pressure malfunction "l::;r.
The red engine oil pressure warning symbol requires
immediate service or repair. Driving with a low-oil -pres­
sure indication is likely to inflict severe damage to the
engine.
If the 'l::::11 symbol appears in the display and blinks, the oil
pressure is too low. An additional driver message can also
be displayed by pressing the [CHECK] button:
Switch off engine and check oil level
Immediate actions
- Pull off the road.
I • •

If there is a malfunction in the electronic ignition lock, the ignition
cannot be turned off. Drive immediately to an authorized Audi
dea ler to have the cause of the malfunction corrected .
On vehicles with Convenience key*, the engine should not be
switched off using the
I S T OP! button because the engine cannot be
started again after the ignition is switched off. •
Yellow symbols
A yellow symbol means WARNING.
Fig. 19 Display: low
fu el leve l wa rnin g
(pr io rity 2)
Yellow symbols indicate a priority 2 malfunction -Warning!
When a yel low warning symbol appears,
one warning tone sounds .
A driver message appears as well to explain the malfunction in more
detail. The driver warning goes out after about 5 seconds, but it can
be brought up again at any time by pressing the
I CH ECK! button.
Check the displayed function as soon as possible . If
more than one
priority 2 malfunction is detected, all symbols will appear one after
the other for about 2 seconds.
Yellow symbols mean:
Con tro ls and eq uip­
ment
Dri ver inf orm atio n di spl ay
Convenience key* ~ page 146
Key not in vehicle
IIUSA model s: ~ page27
Defective brake light
Canad a mod els: ~ page27
Defective brake light
Defective light bulb
~ page27
Light/rain sensor defective* ~ page36
Windshield washer fluid ~ page36
level low
L ow fue l leve l
~ page36
Battery voltag e ~ page36
Worn brake pads ~ page37
Dynamic headlight range => page 37
control defective
Check engine oil level
~ page 37
~ page335
IIEngine oil sensor malfunction ~ page 37
-
Engine speed limitation* ~ page37
-
Adaptive Light d efective* ~ page37
Ignition lock malfunction => page 38
]iwindshield wiper defect ive ~ page38
Vehicle care I I irechnical data

Driver information display
Tire pressure monitoring sys-=> page 44
tern
Loss of air pressure
- -
Tire pressure monitoring sys-=> page 46
tern
System not available
Battery in remote control key
=> page 50
- -
Automatic transmission mal-=> page 789
function
Applies to veh icles: with Conven ience key
Key not in vehicle
? Key not in vehicle
This reminder appears along with the -symbol if the master key is
removed from the vehicle with the engine running. It is intended to
remind you (e.g. when changing drivers) not to continue the journey
without the master key.
If the master key is no longer in the vehicle, you cannot switch off
the ignition after stopping the engine and you also cannot start the
engine again. What is more, you cannot lock the vehicle from the
outside. •
Applies to vehicles: w ith light and ra in sensor
Light /rain sensor defective )
Automatic headlights/automatic wipers defective
If the symbol illuminates, the light sensor has failed. For safety
reasons the low beams are turned on permanently with the switch
in
AUTO. However, you can continue to turn the lights on and off
using the light switch . In the case of a defect in the rain sensor, the
windshield wiper lever functions are still available. Have the
•
light/rain sensor checked as soon as possible by an authorized Audi
dealer. •
Windshield washer fluid level too low "'·
Q Please top up washer fluid
If the symbol illuminates, add windshield washer fluid to the washer
system and also to the headlight washer system=>
page 346. •
Fuel supply too low I]
Please refuel
When this symbol ...1 illuminates for the first time, the fuel reserve
in your vehicle is still between 2.6 and 3 .2 gallons (10 -12 liters) .
Refuel as soon as possible=>
page 326.
If the symbol lights up, even when there is ample fuel in the tank,
and the text
Tank system malfunction! Contact workshop appears
in the display, there is a fault in the system . Contact a qualified work­
shop to have the fault rectified. •
Battery voltage
If the battery's state of charge is not in the optimal range, the
symbol is shown in the display and the driver message
Low battery
charge: battery will be charged while driving
appears.
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.

Driver message appears and does not go out again
If this driver notification appears after the ignition is turned on or
while driving and does not go out again , the battery's state of
charge is not in the optimal range . Starting capability is restricted.
Have the battery checked by an authorized Audi dealer as soon as
possible .•
Worn brake pads )
Brake pads!
If the warning light illuminates, immediately contact your autho­
ri zed Audi dealer or qualified workshop to have all brak e pads
inspected. On USA models the warning light .,...,,. comes on together
with the warning light
BRAKE. Both sets of brak e pads on an axl e must
always be replaced at the same time.
& WARNING
Driving with bad brakes can cause a collision and serious personal
injury.
• If the warning light and the warning light
BRAKE21 with the
message Brake pads! comes on in the instrument cluster display,
immediately contact your authorized Audi dealer or qualified
workshop to have all brake pads checked or replaced if
necessary. •
Headlight range control defective )
' Headlight range control defective !
If the symbol illuminates , the dynamic headlight range control is no
longer working properly. Have the system checked and repaired at
your authorized Audi dealer. •
21 BRAKE: USA models only
Controls and equip ­
ment
Driver information display
Engine oil level ~
~ Please check oil level
When the symbol illuminates, check the engine oil level as soon as
possible=>
page 335. Top off the oil at your earliest opportunity
=>
page 336. •
Engine oil sensor defective -
Oil level! Sensor defective
If the symbol illuminates, contact your authorized Audi dealer and
have the oil sensor inspected. Until you have this done, check the oil
level each time you refuel just to be on the safe side=>
page 335. •
Applies to vehi cles : wit h engi ne spee d lim itation
Engine speed limitation f,,.
Engine speed maximum XXXX RPM
The I symbol illuminates when there is an engine control malfunc­
tion . The indicator light in the instrument cluster also illumi­
nates. The engine speed is limited to the speed displayed in the
driver information system. Keep in mind that the engine speed will
not exceed the value displayed in the driver information system, for
example when downshifting .
Please go to an authorized Audi dealer or other qualified workshop
to have the malfunction repaired. •
Applies to vehic les : with Ada ptive ligh t
Adaptive Light defective ~l
' Adaptive Light defective
I • •

Child safety lock
Power child safety lock for the rear doors t
The power child safety lock prevents the rear doors from
being opened from the inside.
Fi g. 46 Sectio n fro m
dr ive r's door: co ntrols
T he rear doors ar e equip ped with a power child safe ty lock .
It is operated with t he two safety buttons(!) in the driver's
door=} fig. 46.
- Press the left and/or right safety button to disable t he
rear p ower window(sl and preve nt the respective rear
door from being opened from t he inside. The LED in the
button will light up when the chi ld safety lock is tur ned
on .
- Press the ill umina ted butt on aga in t o turn the child
safety f eatures
off .
When the chi ld safe ty lock is activated, the interior door opening
lever is inoperative; the door can only be opened from the ou tside .
In addi tion, the window regulator for that door is a lso inoperative
when the child safety lock is activated.
If the child safety lock has been activated on one or both sides, the
buttons in the rear for the Panoramic slid ing sunroof* are disabled.
Con tro ls and eq uip­
ment
Op ening and clo sing
If the child safety lock has been activated on the left and on the right
s ide, the rear controls are locked on vehicles with rear air -condi ­
tioning *. Dashes"--- " are shown in the disp lays for the rear c limate
controls, and the rear air -conditioning can only be operated fro m
the climate controls in the cabin=>
page 131.
[ i ] Tips
• In order to activate the child safety lock on the left and the rig ·h t
side, you have to press the two safety buttons in succession .
• Make certain that the check l ight comes on in the corresponding
safety switch when the child safety lock is activated. •
Convenience key
Applies to veh ic les: wit h Convenie nce key
Description
Access and vehicle operation based on: Master key remains in driver's p ocket.
The Convenience key veh icle authorization system allows keyless
unlocking, locking and starting of the vehicle . You only have to carry
t he master key on your person .
It makes no difference whether the master key is in your jacket
pocket or in you r brief case . As soon as you app roach your vehicle,
the Convenience key recognizes the request for access , checks for
authori zation and enables the following functions :
• Unlocking the vehicle=>
page 62.
• Locking th e vehicle => page 63.
• Switching on ignition and star ting the engine by pressing the
[ S TAR T] button; the master key does not have to be in the ignition
switch =>
page 144 . ~
Vehicle care I I irechnical data

Clear vision
Lights
Switching the headlights on and off ·'t!-·
In the "AUTO" position, a light sensor* automatically
switches the head- and taillights on and off in response to
light conditions.
Fig. 60 Instrument
panel : light switch
The light switch must not be overturned past the stops in
either direction.
Switching on automatic headlight control
-Turn the light switch to AUTO=> fig. 60.
Switching on the side marker lights
-Turn the light switch to ~oo:.
Switching on the headlights and high beam
-Turn the light switch to ~D.
- Push the high beam lever forward towards the instru-
ment panel=>
page 77.
Contro ls and eq uip­
ment
Switching off the lights
- Turn the light switch to 0. Clear vision
The headlights only work when the
ignition is switched on . While
starting the engine or when switching off the ignition, the head ­
lights will go off and only the side marker lights will be on.
After starting the engine, the headlights are automatically adjusted* to the load and angle of the vehicle (for example, during
acceleration, braking). This prevents oncoming traffic from experi­
encing unnecessary headlight glare from your headlights.
If the system is not operating properly, a warning symbol in the
Auto -Check Control is displayed
=> page 37.
With the side marker lights or headlights switched on, the symbol
next to the light switch illuminates
coo:.
Daytime running lights
• USA models:
On vehicles with xenon lights the daytime running
lights will come on automatically when the ignition is turned on and
the light switch=> fig. 60 is in the
O position or the AUTO position
(only in daylight conditions). The
Daytime running lights function
can be turned on and off in the MMI menu
Exterior lighting
=> page 74. On vehicles with halogen fights, daytime running lights
can be activated by your authorized Audi dealer=>
f.1.
• Canada models: The daytime running lights will come on auto ­
matically when the ignition is turned on and the light switch
=> fig. 60 is in the O position or the AUTO position (only in daylight
conditions)
=> /.1 .
Automatic headlight control*
In the switch position AUTO the automatic headlight control is
turned on . The low beams and tail lights are turned on automatically
through a light sensor as soon as ambient brightness (e.g . when
driving into a tunnel) falls below a value preset at the factory. When ..,_
Vehicle care I I irechnical data