2015 AUDI Q7 brakes

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has been made. If a measurement is not pos ­
sib le, the system cannot respond and wi ll not
react to a vehicle or someth ing else up ahead .
Open road
When the road is clear , the adaptive cru ise
control wo rks like cruise control.
It maintains
a constant target speed specified by the driv­
er.
Driving in traff ic
If a slower vehicle d riving ahead is detected,
the adaptive cru ise contro l decelerates (wi thin
the limits of the system) ¢
page 126, Driver
intervention prompt
and ¢ page 127, System
limitations
to its speed and after adjusting,
tr ies to maintain the set distance from the ve­
h icle ahead. The vehicle may temporarily drive
slower than the set speed while adjusting
¢ .&. in Description on page 115 .
If the vehicle in front accelerates, adaptive
cru ise control also accelerates up to the speed
that you have set.
I f the vehicle ahead slows to a stop, ACC will
slow yo ur vehicle down and to a complete
stop if this is possible w ith in the system's lim­
its and capabilities. ACC will not make an
emergency stop . The text message
ACC off:
manual control! appears in the instrument
cluster display. Once the veh icle stops, you
must dep ress the brake pedal to prevent the
veh icle from mov ing forward or "creeping" .
D epressing the brake pedal turns
off ACC.
When the vehicle ahead accelerates yo u can
reactivate ACC
¢ page 120, as soon as your
vehicle has reached a speed of 1 mph (2 km/
h) .
Situat ion s requiring dri ver int ervention
In some situations you wi ll have to use the
footbrake to s low the vehicle down in order to
k eep a safe distance from vehicle in front of
you or to avo id a rear -end coll is ion. In this sit­
uation, a symbol appears and a warning tone
sounds ¢
page 126 .
Adapti ve crui se control 117
Passing another vehicle
If you move into the passing lane and no ve hi­
cle is detected ahead , the adapt ive cr uise con­
trol acce le rates to the speed you have set and
maintains it.
Overr iding ACC
You can in cr ease yo ur speed at a ny time by
stepping on the accelera tor ped al. A fter you
release the accelerator peda l, the system ad­
justs back down to the speed you prev ious ly
set .
Reducing stopp ing distance
If the radar sensor detects that the d istan ce
to the vehicle a head is less than de fined m ini­
mum distance, the brakes are automatically
prepared fo r emergency braking by the d river .
The brake pads are moved very close to the brake d iscs without actually braking the vehi­
cle. This brake assistant feature reacts more
quick ly to the dr ive r's brak ing, and also works
when adapt ive cruise control is
off . The stop­
ping distance is reduced as a result of th is ad­
vance brake p reparation . Th is fun ction does
not perform any emergency b rak ing mane u­
vers by itse lf; the dr iver mus t always apply the
brakes.
A WARNING
If ACC initiates a braking maneuver, the brake pedal w ill be retracted. Inter ference
with the brake peda l can prevent ACC from
slowing the veh icle down and cause a
crash and serious personal injury.
- Never put anything in the driver's foot­
well or let anyth ing fall into it. An object
in the driver's footwe ll can inte rfe re with
the peda ls and prevent the acce le rator
from being used to override ACC or pre­
vent ACC from being switched
off when
the brake pedal is depressed and also
prevent the vehicle from being slowed
down or stopped .
- Onl y use floor mats that keep the area
aroun d the peda ls free and that can be
securely fastened to the footwell .
-

118 Adapti ve crui se control
-Never drive with you r foot underneath
t h e brake pedal.
- Always read and heed the information
and WARNINGS
¢ .&. in Description on
page 115.
A WARNING
- Never rely on the distance control fea­
ture of ACC alone to prevent rear-end col­
lisions . Always be prepared to brake and
take evasive action to avoid collisions and other acc ident situations.
- Never allow the clos ing speed between
yo u and other vehicles to be so h igh that
the adaptive c ruise control may not be
able to slow your vehi cle safe ly. If clos ­
ing speed is too high, you m ust app ly the
brakes yourself to reduce the risk of a
rear-end crash.
(D Tips
Please note that t he amo un t of a ccelera­
tion the adapt ive cr uise control uses de­
pends on the Distance setting selected .
DISTANCE 1 g ives you acce lerat ion that is
dynamic and sporty. DISTANCE 4, on the
other hand, gives more moderate acce lera­
tion. For more information about the time
intervals ¢
page 120 , How is the distance
(time interval) set? .
-Please note that if the adaptive cruise
control has begun braking the vehicle
and the d river chooses to brake the vehi­
cle add itiona lly, t he b rakes may fee l
"h ard". This is simply due to the pressure
b uild- up of the initial b raking.
- Adaptive cruise control is sw itched off af­
te r pressing the footbrake. The speed
saved u p this poin t can be resumed. To
res ume the saved speed, release the
b rake pedal and p ull th e control leve r to­
ward you
¢ page 120 , Turning adaptive
cruise control off temporarily .
Switching the system on and off
Applies to vehicles: with adaptive cruise contro l
Fig. 131 Control lever: Sw itching on and off
S w itching the sy stem on
.,. Pull the lever to position © r::!) fig. 131 .
Switching the system off
.,. Pres s the lever to posit ion @ (latched).
How is the speed stored?
Applies to vehicles: wit h adaptive cruise contro l
,' ts ~:_" ';;;", ' , E Sl'EEO CANCELU
. T ,0. -ON ... . RESUME~
Fig. 1 32 Co ntrol lever: Storing s peed
With the sy stem switched on the speed is
stored as follows:
• Dr ive at the speed you want .
.,. Press the
ISE TI button ¢ fig. 132 to store
the desired speed.
After the
ISE TI button is re leased, the current
speed is stored and maintained . If you are
driv ing at a speed below 20 mph (30 km/ h),
the minimum speed setting of 20 mph
(30 km/h) will be set .
The saved speed is now shown in the LED d is­
play in the speedometer by one or two illumi­
nated red light d iodes
c::> page 123. At the
same time, the saved speed is also shown for ..,.

122 Adapti ve crui se control
A WARNING
Following ot her vehicles too closely in­
creases the risk of a crash and serious per­
sonal injury .
- Following other vehicles too closely, par­
t icularly at higher speeds increases the
risk of collis ions and serious pe rsonal in­
Jury.
- Setting short distances to the traffic
ahead reduces the time and distance
available to br ing you r vehicle to a safe
stop and makes i t even mo re ne cessary
to pay close attention to traffic.
- Always select a speed and distance to
traffic ahead that is safe and appropr iate
under the prevailing traff ic, road, weath ­
er and Lighting conditions .
- Never re ly on the dis tance control fea­
ture of ACC a lone to p reven t rear -end col­
lisions. Always be prepared to brake and
take evasive act ion to avoid co llisions
and other acc ident situations.
- Never allow the closing speed between
you and other vehicles to be so h igh that
the adaptive cruise control may not be
able to slow your vehicle safe ly. If clos­
ing speed is too high, you must apply the
brakes yourself to reduce the risk of a
rear-end c rash.
- Always select a g reater following dis­
tance to the veh icle ahead on wet roads
than o n dry roads.
- Always read and heed the information
and WARNI NGS
9 .&. in Description on
page 115.
(0 Tips
The distance setting is reset to the factory
default
DISTANCE 3 the next time the ig­
nition is turned on.
Driver information
Displays in the instrument cluster
Applies to veh icles: w ith adaptive cruise contro l
Depending on the driving situation, driver in­
formation is displayed in the instrument clus­
ter .
Fig . 1 37 Overv iew ins tr u me nt cluster
@ Speedometer and indica to r Li ght d isp lay
@ Display in the instrument cluster
@ Speedometer and indicato r light
display
Important information concerning vehicle op ­
eration with adaptive cruise control is shown
i n display a rea @. The desired speed you set is
i ndica ted in the speedome ter (LED lights
aro und t he ed ge).
T he ind icator Lights show whether the system
has detected a vehicle trave ling ahead .
@ Display in the in strument cluster
In display area@ information from the navi­
gation system* and th e tr ip computer is dis­
played in addition to informat ion about adap­
t ive cru ise control.
You can select among the different informa­
t io n by repeated brief taps o n the
I RESET I but­
ton on the w indshie ld w iper Lever
9 page 25,
Operation .
Certain pieces of information in the bottom
part of the display are not shown permanent­
ly . Information is displayed only if you set or
c h ange the speed setting, change the time in­
te rva l, when messages are disp layed or if the
adaptive cruise co ntro l is turned
off for safety
r easons .

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Display in the speedometer
Applies to vehicles: with adaptive cruise control
Fig. 138 D isplay in the speedomete r
Des ired spe ed
The desired speed set by the driver is dis­
p layed by a red LED.
If the desi red speed was set between two
lines on the speedometer using the
I SETI but ­
ton, the two closest light emitting diodes will
come on <=>
fig. 138.
The system a llows only speeds to be set be ­
tween 20 to 95 mph (30 to 150 km/h) to be
set. This speed range is faint ly illuminated in
the speedometer (LED lights).
Ind icator lights (symbols )
-- Open road :
The indicator light_
shows that ACC is act ive and that no moving
vehicle has been detected with in range of the radar sensor up ahead in your lane of
travel. The set speed is maintained.
- - Driving in traff ic: The ind icator
light - shows that a vehicle moving in
your lane of travel has been detected up
front in your lane of travel. Your speed is ad­
justed according to the speed of the vehicle
up front . ACC accelerates and brakes auto­
matically within the sys tem's capabilit ies .
-- Driver int ervention prompt: The
red flashing warning light- means
Request for driver to a ssume control. You
as the dr iver must s low the vehicle with the
f oot brake. The symbo l-t ells you
t h at the adaptive c ruise co ntrol is not able
to slow the vehicle down enough to keep a
enough distance to the ve hicle in front of
you. A warning tone will a lso sound when
Ad apti ve crui se control 12 3
the symbol appears. For more information
about the driver intervention prompt
r::!) page 126.
_& WARNING
Improper use of the adaptive cruise con­
trol feat ures and inattent ion can lead to a
crash and ser ious pe rsonal inju ry.
- Never a llow the closing speed between
you and othe r vehicles to be so high that
the adaptive cruise cont ro l may not be
ab le to slow yo ur vehicle safely. If clos­
ing speed is too high, you must apply the
brakes yo urself to reduce t he ris k of a
rear-e nd crash.
- Always sele ct a greate r followi ng d is­
tance to the vehicle up ahead on wet
roads t han on d ry roads.
- Always rea d and h eed t he i nfo rmation
an d WAR NINGS <=>
& in Desc rip tio n on
page 115 .
(D Tips
- If you use t he accelerator to go faste r
t han t he speed of the vehicle ahead o f
yo u, the dr iver in tervention prompt will
not be accompa nied by a warn ing tone.
- I f the speed you previ ously set is exceed­
ed, the indic ator light in the s peedome­
ter wi ll swi tch off.
Display in the instrument cluster
Appl ies to vehicles: wit h adaptive cruise control
Fig. 139 Disp lay in the inst rument cluster
-
Scroll through the availabl e information dis­
p lays by br iefly tapp ing the
I RESET ! button at
the en d of the windshield wipe r leve r. Yo u can ..,.

the 20 to 95 mph (30 to 150 km/h) speed
range .
ACC: Unavailable
The text message ACC: Unavailable appears,
for example, if the temperature of the brakes
i s excessive. Adaptive cruise control is tempo­
rarily not available. A warning tone sounds as
a reminder .
ACC: Not available
The text message ACC: Not available appears
in the event of a malfuncti on. Adaptive cruise
control is turned
off . A warning tone sounds
as a reminder. Have the system inspected by a
q ua lified dealership.
ACC: Sensor blocked
The text message ACC: Sensor blocked ap­
pears when the ACC System can no longer ac­
curately detect vehicles moving up ahead in
your lane of travel. Adaptive cruise control is turned
off. A warning tone also sounds as a re­
minder.
To decide whether it is necessary to switch
off
the ACC (ACC : Sensor blocked) or if it is only a
temporary condition (ACC functionality limit­
ed) the system will take into cons ideration the
outside temperature and/or the windshield
operat ion.
The ACC sensor is dirty or blocked (e.g. leaves,
snow).
The ACC sensor is located behind the area to
the right of the front license plate . If the ACC
sensor is dirty or blocked, clean the area to re­
store system operat ion.
ACC off: Manual control!
The text message ACC off: Manual control!
appears after the ve hicle has been brought to
a standstill by the adaptive cruise control. In
this case you must depress the brake peda l to
prevent the veh icle from rolling. A warn ing
"" tone sounds as a reminder.
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Adaptive cruise control 125
Stabilization control (ESC)
The text message Stabilization control (ESC)
appears if the Electronic Stabilization Control
(ESC) has intervened . In this case the adaptive
cruise control is automatically turned
off . This
is accompanied by a warn ing tone.
Speed
T he set speed in mph (Canada km/h) always
appears when saving or changing the speed in
adaptive cruise control
¢ page 118, How is
the speed stored?
and r::!) page 119, Changing
stored speed.
ACC functionality limited
T he message ACC functionality limited ap­
pears when the ACC System does not detect
any moving vehicles up ahead in yo ur lane of
trave l for a longer period of time. During this
time, the distance to moving vehicles in your
lane of travel up ahead is not being ma in­
ta ined . 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 d irty . The ACC system is
not react ing, or is not reacting correctly, to
moving vehicles up ahead in your lane of
t ravel.
- There may be very light traffic on and there
is nothing that marks the side of the road
(for examp le, guard ra ils, traffic signs,
trees). As soon as a moving vehicle up ahead
is detected again, ACC becomes active again
and the message disappears.
T he ACC sensor is located be hind the area to
the right of the front license plate. If the ACC
senso r is dirty or blocked, clean the area to re­
store system operation.
Parking brake!
T he text message Parking brake! appears,
when the parking brake is applied. ACC is
turned
off . A warning tone sounds as a re ­
minder.

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given to another person, the saved settings remain as they are .
System limitations
General information
Applies to vehicles: with adaptive cruise co ntrol
The radar sensor has limits that the driver
must know to be able to use ACC properly .
The adaptive cruise control works within lim­ its that are also related to radar sensor range
and sight distance . In some situations ACC
may react unusually or late from the driver's
point of v iew. Therefore, always be attent ive
to what is happening around you and always
be ready to intervene, if necessary:
-when driving around curves ¢page 127
- when vehicles up front are not in line with
your vehicle ¢ page 128
- when other veh icles are changing lanes
i=> page 128
- when other vehicles are difficult to detect
i=> page 128
- when vehicles up ahead are not moving or obstacles are in your travel lane i=>page 128
A WARNING
The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving veh icles up ahead may not be
prompt ly detec ted or may not be detected
a t all.
- Always pay careful att ention to the traf­
fic s ituation and be ready to intervene
and be re ady to take comp lete cont rol
whenever necessary.
Ad apti ve crui se control 12 7
When driving around curves
Applies to vehicles: wit h adaptive cruise control
Fig. 142 Vehicle e nter ing a curve
Fi g. 14 3 Vehicle leav ing a curve
Entering a curv e
When entering a curve, the adaptive cruise
control may react to a vehicle in the next lane
and apply the brakes in your vehicle
¢ fig . 142. The braking action can be overrid·
den by depressing the accelerator pedal.
L e aving a curv e
At the end of very long curves, ACC's predic­
tive lane reading can cause ACC to react to an­
other vehicle in the next lane and app ly the
brakes on your vehicle¢ fig . 143. The braking
action can be overr idden by depress ing the ac­
ce lerator pedal.

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Audi braking guard
Description
Applies to vehicles: with a daptive cruise co ntrol
Audi braking guard warns you of a possible
collision with a moving vehicle up ahead .
Fig. 149 Display in the instrument cluster
The Audi braking guard is act ive from a speed
of app rox. 20 mph (30 km/h) and wor ks w ith­
in the system limits¢
page 127 even when
the adaptive cruise contro l is deactivated .
A radar sensor is bu ilt into the front of the ve ­
h icle
¢page 116, fig. 130. The system is in ­
tended to measure the distance to reflect ive
surfaces .
If a measurement is not possible,
the system does not respond.
When the meas urement has been taken, the
system can recognize a possibly hazardous sit ­
uation, for example, whe n a vehicle up ahead
in your lane of trave l sudden ly brakes or when
your own vehicle is moving at high speed to­ wards a much slower vehicle up ahead . As
soon as the system senses that a possible col­
lision with the vehicle up ahead can only be
avoided by immed iate full brake app lication or
by an avoidance maneuver, a warning appea rs.
The system has a defau lt response time to be
able to signal before a collision occurs. This
system response time is automat ica lly re­
duced if you acce lerate actively, fo r example
to join a highway . B rak ing, tra nsverse acceler­
ation and the steering ang le can lead to a re­
duced system response time. The warning is
deactivated if you begin to overtake with full
acceleration .
Adapti ve crui se control 129
The system can make you aware o f two diffe r­
ent hazardous situations:
Distance
T he distance warning is given if the system
ca lculates that there is not enough distance
to the vehicle up ahead a pe riod of more than
S seconds . If the distance is less than 30 feet
(9 meters) at SO mph (80 km/h), for examp le,
an optical display comes on in the instrument
cluster¢
fig. 149.
If the vehicle ahead brakes sharp ly, Audi brak ­
ing guard cannot help you to avoid a collision,
even in the case of an immediate response.
Take immed iate action to avoid the co llision
and increase the distance to the vehicle up
ahead.
Speed
If there is a much slower vehicle moving up
ahead in your lane, or if the vehicle ahead
brakes sharply, the Aud i brak ing guard calcu­
lates the po int from which a collision can only
be avoided by full braking or by an avoidance
maneuve r. If a warning does sou nd, a poss ible
collision with the ve hicle in front can on ly be
avo ided th rough an evas ive maneuve r or by
braking.
T he warning is given in two stages :
-Pre -warning: A visual display appears in the
instrument cluster and a warning tone
sounds.
- Acute warning : If you do not respond to the
pre-warn ing, the second stage warning is
given. A quick brake application helps to di­
rect your attention to the road and traffic
situat ion.
Under heavy braking, the brake ass istant
¢
page 116 also helps you benef it from maxi­
mum brak ing eff ic iency.
A WARNING
I nattention can cause collisions, other ac­
cidents and ser ious perso nal i nju ries.

130 Adapti ve crui se co ntrol
- Always pay close attention to the traffic,
even when the Audi brak ing guard is
switched on. The Aud i brak ing guard pro­
vides a warning but does not brake the
car for you . You must apply the brakes
yourself!
- Always keep the safe and legal distance
between your vehicle and veh icles up
ahead.
-Audi braking guard works within limits and w ill not respond outs ide the system
limits, for example when approaching a
stopped vehicle or stationary obstacle
(end of a traff ic jam or veh icle that has
broken down in traffic).
- Always remember that the radar sensor
for the A udi braking guard works within
defined detection and range limits that
may prevent the proper detection of oth­
er vehicles.
- The radar sensor's function and range
can be reduced by rain, snow and heavy
spray. Moving vehicles up ahead may not
be promptly detected or may not be de­
tected at all.
- Always pay careful attention to the traf­
fic s ituation and be ready to intervene
and be ready to take complete control
whenever necessary.
- Reflective surfaces includ ing crash barri­
ers or tunnel entrances may impair the
function of the radar sensor .
Settings in the MMI
Applies to vehicles: with a daptive cruise co ntrol
The settings of the Audi braking guard are
performed in the MMI.
.. Se lect : I CAR I funct ion button > S ystems *
control button > Audi brak ing guard . Or
"Se lect :
I CAR I funct io n button > Car sy stem s*
control button > Driver ass is t > Audi brak­
ing guard .
- System -
the Audi braking guard system can
be switched
O n and Off .
-Earl y w arn ing -the acoustic warning and
the messages can be switched
On and Off .
(D Tips
When handing ove r the keys to another
person, the p revious settings are adopted
i f the Audi braking guard is activated
¢ page 43.
Driver's information in the instrument
cluster display
App lies to vehicles : wit h adaptive cruise contro l
Braking guard activated
This message appears when the Aud i b rak ing
guard applies the brakes du ring a second
stage (ac ute) war ning .
Braking guard off
This message appears when the system has
been deactivated via the MMI. This message
also appea rs br iefly at each beginn ing of a trip
i f the sys tem is switched off .
The message a lso appears if the system is not
available due to a malfunction or if the ESC is
not sw itched on¢
page 224. If th is is the
case, the system will not provide warnings
abo ut a po ssible collision.