2009 AUDI Q7 brake sensor

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 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
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& W ARNING (continu ed )
the veh icle safely when you follow another vehicle too closely .
Always remember that the Adaptive Crui se Control has a braking
power th at is only about 30 % of the vehicle 's maximum braking
ability . The automatic braking function cannot bring the vehicle to
a sudden or emergen cy stop . Always be prepared to bra ke and
take evasive action to avoid collisions and other accident situa ­
tions .
• Never allow the closing speed between you and other vehicles
to be so high that the Adaptive Cruise Control may not be able to
slow your vehicle safely . If closing speed is too high , you must
apply the brakes yourself to reduce the ri sk of a rear -end crash .
• Never rest your foot on the accelerator pedal , especially when
the Adapt ive Cruise Control is being used . Pressure on the a cceler ­
ator will override the ACC braking function and prevent the brakes
from being appl ied when ACC detects a situation when the brakes
must be applied.
• Never use Adapt ive Cruise Control when you cannot drive
safely at a steady speed , including on city streets , on winding
roads or when road conditions are poor (for example , on ice,
gravel, in fog , heavy r ain or on wet roads that increase the risk of
hydroplaning
I.
• The radar sensor's vision can be reduced by rain , snow and
heavy road spray . These and similar conditions can prevent vehi ­
cles up ahead from being accurately detected and in some cases
they may not be detected at all . Do not use ACC when the radar
sensors cannot accurately detect veh icles moving ahead of you in
traffic.
• Always turn off Adaptive Cruise Control when entering turn
lanes , exit lanes and construction zones or in similar situations
because the vehicle will automati cally accelerate to the stored
speed when the road ahead is clear.
• To prevent unintended operation , always switch ACC off when
it is not be ing used .
Controls and equip ­
ment
[ i ] Tips
• For sa fety reasons , the sto red speed is de leted w he n th e ig nit ion
is turned off.
• The E lectronic Stabilization Program (ESP) and the Anti -Slip
R egu lation (ASR) cannot be deacti vated when the Adaptive Cruise
Co ntrol is sw itc hed on . If the ESP and the Anti-Slip Regula tion (AS R)
has been deactivated and you then switch on the Adaptive C rui se
Contro l, t he ESP func tion w ill also be act iva ted automat ica lly .
• Damage caused by accidents an d so me mino r co llisions can
affect t he radar sensor sett ings and cause the sys tem to ma lfun c­
tion or switch off completely.
• The radar sensor cover is heated. In winter conditions, you
should stil l check before driving to make sure it is free of ice and
s n ow. If necessary, clean the area near t he radar sensor carefully
~ page 15 2, fig. 159 .
• To ensure that the radar sensor is not blocked, foreign objects
(e .g. stickers, la rger l icense plate mount s, add -on pa rts) must not
cove r th e area near t he radar sensor~ page 152, fig. 159. The area
nea r the rada r sensor must not be painted, either .
• For Dec laration of Comp liance to United States FCC and Industry
Canada regulations ~ page
404. •
I • •

• .___A_ d_a_ p:- t_i v_ e_ C_ r_u _is _ e_C_ o_ n_ t_ r_ o_ l --------------------------------------------
Ap plies to vehi cles : wi th Ad aptive Cruise Co nt rol
How does Adaptive Cruise Control work?
Vehicles traveling ahead are detected with the aid of a
radar sens or.
Fig. 160 Bas ic p rin­
ci pl e diagra m: R adar
s en sor measur eme nt
ra nge
Adaptive Cruise Contro l uses a radar sensor in the fron t of the
vehic le=> fig. 160. The system has limitations=>
page 165. Things
t hat are not moving in your lane and in your direction of travel will
not be detected. The sensor measures the distance to reflective
surfaces that must have a certain size. The system responds only
after the distance measurement has been made. If a measurement
is not possible, the system cannot respond and wil l not react to a
vehic le or something else up ahead.
Op en ro ad
When the road is clear, the Adaptive Cruise Contro l works like cruise
control. It maintains a constant target speed specified by the driver.
D rivi ng in t raffi c
If a slower vehicle driving ahead is detected, the Adaptive Cruise
Control dece lerates (within the limits of the system)=>
page 164,
"Driver intervention prompt" and=> page 165, "System l imitations"
to its speed and after adjusting, tries to maintain the set distance
from the vehicle ahead. The vehicle may temporarily drive slower
than the set speed wh ile adjusting=>
& in "Description" on
page 752 .
If the vehicle in front acce lerates, Adaptive Cruise Control a lso accel­
era tes up to the speed that you have set .
If the vehicle ahead s lows to a stop, ACC wi ll slow your vehicle down
and to a complete stop if this is possible within the system's limits
and capabil ities . ACC will not make an emergency stop. The text
message
ACC off : manu al c ontro l! appears in the instrument c luster
display . Once the veh ic le stops, you must depress the brake peda l
to prevent the vehicle from moving forward or "creeping" .
Depressing the brake pedal turns off ACC. When the veh ic le ahead
acce lerates you can reactivate ACC =>
page 157, as soon as your
vehic le has reached a speed of 1 mph (2 km/h).
S ituati ons re quir in g dri ver int erve ntion
In some situations you will have to use the footbrake to slow the
vehic le down in order to keep a safe distance from vehic le in front
of you or to avoid a rear-end collision. In this situation, a symbol
appears and a warning tone sounds=>
page 164.
Passing anoth er v ehicl e
If you move into the passing lane and no vehicle is detected ahead,
the Adap tive Cruise Contro l accelerates to the speed you have set
and maintains it.
Ov erriding A CC
You can increase your speed at any time by stepping on the acceler ­
ator pedal. After you re lease the accelerator peda l, the system
adjusts back down to the speed you previously set.
Redu cin g stopping di stan ce
If the radar sensor detects that the distance to the vehicle ahead is
less than defined minimum d istance, the brakes are automat ically
prepared for emergency braking by the driver. The brake pads are
moved very c lose to the brake discs without actually braking the
vehic le. This brake assis tant feature reacts more quickly to the
driver's braking, and also works when Adap tive Cruise Contro l is off.
The stopping distance is reduced as a result of this advance brake .,_

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Certain pieces of information in the bottom part of the display are
not shown permanent ly . Informa tion is displayed on ly if you set or
change the speed set ting, change the time interval , when messages
are displayed or if the Adaptive C ruise Co ntrol is turned off for safety
reasons. •
Applies to vehicles: with Ada ptive C rui se Cont rol
Display in the speedometer
Desired speed
Fig. 16 8 Displa y in th e
s p ee do mete r
The desired speed set by the driver is displayed by a red LED .
If the desired speed was set between two lines on the speedomete r
using the
[SET I button, the two closest light emitting diodes will
come on
=> fig . 168.
T he system allows on ly speeds to be set between 20 to 95 mph (30
to 150 km/h) to be set . This speed range is faintly illuminated in the
speedometer (LED l ights).
Indi cator light s (sy mbols )
• ""c:::::> Open road : The indicator light ""c:::::> shows that ACC is active
and that no moving vehic le has been detected with in range of the
radar sensor up ahead in your lane of trave l. The set speed is main ­
tained.
Con tro ls and eq uip­
ment
• c:::::>1n ,c:::::> Dri ving in traffi c: The indicator light c:::::>11, ,c::::, shows that a
ve hicle moving in your lane of travel has been detec ted up front in
your lane of travel. Your speed is adjusted according to the speed of
t he vehicle up front . ACC accelerates and brakes automa tically
within the system's capabilities.
• c:::::>11 "c:::::> Driver intervention prompt : The red flash ing warning
light
~11 .. .::::::, means Reque st for driver to a ssume control . You as the
driver mus t slow the vehic le with the foot b rake . The symbol
.::::::,11 .. c:::::>
tells you that the Adaptive Cruise Con trol is not able to s low the
vehic le down enough to keep a enough distance to the vehic le in
front of you. A warn ing tone wi ll also sound when the symbo l
appears . For more information about the driver intervention prompt
=> page 764.
& WARNING
Improper u se of the Adap tive Cr uise Contr ol features and inat ten ­
tion can lead to a crash and serious person al injury .
• Never allow t he clo sing speed between you and other vehi cle s
to be so high that the Adapt ive Cruise Control may not be able to
s lo w your vehi cle safely .
If clos ing speed is too h igh , you must
apply the brakes your self to reduce the risk of a rear-end crash .
• Alway s s ele ct a greater follo wing di stance to the veh icle up
ahead on wet ro ads than on dry road s.
• Always re ad and heed the information and WARNINGS=>
& in
" Description " on
pag e 152.
[ i ] Tips
• I f you use the accelerator to go faster than the speed of the
vehicle ahead of you, the driver intervention p rompt wil l not be
accompanied by a wa rning tone .
• I f the speed you previously set is exceeded, the indicator light in
the speedometer wi ll swi tch off .•
Vehicle care I I Technical data

Adaptiv e Crui se Contro l ""' __________________________ ___;__;~-------
Applies to vehic les: w it h Ad aptive Crui se Co nt rol
System status indicator
The text messages and symbols shown in this area of the
display are not displayed permanently.
T ime in ter va ls (s uch a s c::;, __ __ c::;, }
Fig . 170 System
sta tus in dicator
The different symbols for the time intervals (distance) appear if you
change the settings:::;, fig. 170 .
Three white dots .. . appear if a setting canno t be made with the
operating lever . The following are possible reasons
• If you pull the control lever towards you to resume speed but no
requested speed was set.
• I f you push the lever up to increase (or down to reduce) speed
when no speed has been set previously.
• If you push the lever up to increase (or dow n to reduce) speed
and this speed is outside the 20 to 95 mph (30 to 150 km/h) speed
range .
A CC no t ava ila bl e
The text message ACC not av aila ble appears, for examp le, if the
temperature of the brakes is excessive. Adaptive Cruise Control is
t emporarily not available . A warning tone sounds as a reminder.
Controls and equip ­
ment A
CC not ava ilable!
The text message ACC not availabl e! appears in the event of a
malfunction. Adaptive Cruise Control is turned off. A warning tone
sounds as a reminder . Have the system inspected by a qua lified
dea lership.
ACC s ensor bl ocked
!
The text message ACC se nsor blo cke d ! appears when the ACC
System can no longer accurately detect vehicles moving up ahead
in your lane of
travel. Adaptive Cruise Control is turned off. A
warning tone a lso sounds as a reminder.
To decide whether it is necessary to switch off the ACC (ACC sensor b locked
!) or if it is only a temporary condition (ACC Functionally
limited), the system wi ll also takes into consideration the ou tside
temperature and/or the windshield wiper operation.
The ACC sensor is dirty or b locked (e .g . leaves, snow).
The ACC sensor is located behind the area to the right of the front license p late. If the ACC sensor is dirty or b locked, c lean the area to
restore system operat ion.
ESP activ at ion
The text message ES P activ ation appears i f the E lectronic Stabiliza­
tion Program (ESP} has intervened. In this case the Adaptive Cruise
Control is automatically turned off . This is accompanied by a
warning tone.
S peed
The set speed in mph (Canada km/h) always appears when saving or
changing the speed in Adaptive Cru ise Control :::;, page 156, "How is
the speed stored?" and:::;, page 156, "Changing stored speed".
A CC function alit y limited
The message ACC functionalit y lim ited appears when the ACC
System does not detect any moving vehicles up ahead in your lane
of trave l for a longer period of time. During this time, the distance
t o moving vehicles in your lane of trave l up ahead is not be ing main -~
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• ..__A_ d_a...: p:,..._ ti_v _ e_ C_ ru_ is_ e_ C_ o_n_ t_ r_ o _ l ___________________________________________ _
tained. The ACC system is not switched off, and increased attention
to the traffic situation is absolutely necessary. The following may be
reasons why the message
ACC functionality limited appears:
• The ACC sensor is dirty . The ACC system is not reacting, or is not
reacting correctly, to moving vehicles up ahead in your lane of
travel.
• There may be very light traffic on and there is nothing that marks
the side of the road (for example, guard rails, traffic signs, trees). As
soon as a moving vehicle up ahead is detected again, ACC becomes
active again and the message disappears .
The ACC sensor is located behind the area to the right of the front
license pla te . If the ACC sensor is dirty or blocked, clean the area to
restore system operation.
Parking brake !
The text message Parking brake ! appears, when the parking brake
is applied. ACC is turned off. A warning tone sounds as a reminder.
Stationary object ahead
The text messag e Stationary object ahead appears, when you want
to activate the system and there is a stationary vehicle or an object
immediately in front of you.
Gradient too steep
The text message Gradient too steep appears when the maximum
gradient for proper ACC operation has been exceeded. Adaptive
Cruise Control is turned off. A warning tone also sounds as a
reminder.
ACC off: manual control!
The text message ACC off: manual control! appears after the vehicle
has been brought to a standstill by the Adaptive Cruise Control. In
this case you must depress the brake pedal to prevent the vehicle
from rolling. A warning tone sounds as a reminder .
Selector lever position!
The text message Selector lever position! appears when the
selector lever is moved to position
N. In this position, Adaptive
Cruise Control is not available. •
Applies to vehi cles : wi th Ad aptive Cr uise Co ntro l
Driver intervention prompt
The driver intervention prompt calls on the driver to take
over the situation.
Fig. 171 Instrument
cluster: Driver inter­
vention prompt
In certain situations , the braking power of the Adaptive Cruise
Control is not enough to maintain an adequate distance to the
vehicle up ahead. In these situations, the Adaptive Cruise Control
calls the driver to take action .
The
driver intervention prompt alerts you visually and audibly to
take over .
• A red vehicle is shown in the instrument cluster display
::::::,fig.171.
• The text DISTANCE! appears in the status line .
• The indicator light
.:=:,1,, ,.:=:> in the speedometer blinks red.
• A warning tone sounds.

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[ i ] Tip s
• Adaptive Cruise Contro l is switched off after pressing the foot­
brake . The speed saved up this point can be resumed.
• To resume the saved speed, release the brake pedal and press
the control lever=>
page 157, "Turning Adaptive Cruise Control off
temporarily".
• If you use the accelerator to go faster than the speed of the
vehicle ahead of you , the
dr iver i nterve ntion pr ompt will not be
accompanied by a warning signal.
• If the speed you previously set is exceeded , the indica tor light in
the speedometer wi ll switch off. •
Applies to v ehi cles: with Ad aptive Crui se Co nt rol
MMI settings
Individual settings for Adaptive Cruise Control can be
selected in the MM/ .
Fig. 172 M MI Display:
A dapti ve C ruise
Co ntrol
Settings for the driving program can be adjusted indiv idu ­
ally to the particular user and saved in the MMI. This can
only be done with the eng ine running.
- Press the
I CAR] funct ion button.
Controls and equip ­
ment
Select Sy stem s* in the CAR menu.
- Select
Adaptive Crui se Control . The Adaptive C ruise
Control
menu appears.
Select
driving program .
Select the desired driv ing program .
Sett in g t he d riving p rogram
In the driving progr am menu you can adjust the characteristics of
Adaptive Cruise Contro l to your own preferences using
d yn ami c,
s ta nd ard
or comfort .
Sav ing sett ing s
Your individua l settings are automatical ly saved and assigned to the
remote control key being used (remote key storage). If the key is
given to another person, the saved settings remain as they are. •
System limitations
Applies to veh ic les : w ith Ada ptiv e Crui se Cont ro l
General information
The radar sensor has limits that the driver must know to
be able to use ACC properly.
The Adaptive Cruise Control works within limits that ar e also related
to radar sensor range and sight distance . In some situations ACC
may react unusually or late from the driver's point of view . There ­
fore, always be attentive to what is happening around you and always be ready to intervene, if necessary :
• when driving around curves=>
page 166
• when vehicles up front are not in line with your vehicle
=>
page 166
• when other vehic le s are changing lanes=> page 167
I • •