tow AUDI Q7 2017 Owner´s Manual

A WARNING ,~
Read and follow all WARNINGS.
- The vehicle can roll even if the ignition is switched off.
- Power is st ill transmitted to the wheels
when the engine is running at idle. To pre­
vent the veh icle from "creeping", you must
keep your foot on the brake in all selector
lever positions (except P and N) when the
engine is running.
- Before opening the hood, select the P selec­ tor lever position and set the parking brake.
T his reduces the risk of an accident. Always
read and follow the applicable warnings
¢ page 322, Working in the engine com­
partment.
@ Tips
If you accidentally se lect N while d riving, take
your foot off the acce le rator pedal and wa it
for the engine to slow down to idle before se­
lect ing Dor S.
Driving tips
Starting the engine
.. Th e P or N position must be selected.
Starting from a stop
.. Press and hold the brake pedal.
.. Start the engine
c:> page 82.
.. Press the lock ing button @on the selector lev­
er and select the D, E, Sor R position
¢page 91.
.. Wait a moment until the transmission shifts.
You wi ll notice a slight movement when the
gear engages .
.. Release the brake pedal and press the accelera-
tor pedal ¢
&-
Various convenience functions are avai lab le for
starting on hills
c:> page 88.
Stopping temporarily
~ .. Press the brake pedal to stop the vehicle, for
~ example at a traffic light. Do not press the ac-
~ celerator peda l when doing this. 0
0
:E: ' Driving
.. To prevent the vehicle from ro ll ing when you
start driving, set the parking brake when stop­
ping on steep hills¢
A-
.. The parking brake will release automatically
and the vehicle will start moving once you press
the accelerator pedal.
Stopping/parking
If the selector lever is not in the P position when
you open the driver's door, the vehicle could roll.
.. Press and hold the brake pedal
c:> A-
.. Set the parking brake.
.. To select the P se lector lever position, press the
P button
@ on the selector lever c:> page 91 ,
fig. 92.
Under certain conditions, such as driving in the
mountains or when towing a trailer, it may be
helpful to switch to manua l mode temporarily
and shift
manually to adapt to the driving condi­
tions
c:> page 94.
On hills, activate the parking brake first and then
shift into the P position
c:> page 87. This prevents
too much stress from being p laced on the lock ing
mechanism .
A WARNING
--The vehicle can roll even when the eng ine is
sw itched off.
- Unintended vehicle movement can lead to
serious injuries .
- To reduce the r isk of an accident, do not
press the accelerator pedal when changing
the selector lever position while the vehicle
is stationa ry and the engine is running .
- To reduce the r isk of an accident, never se­
lect the R or P positions while dr iv ing.
- Do not inadvertently press the accelerator pedal when the vehicle is stationary . Other­
wise the r is k of an accident increases be­
cause the vehicle will start to move immedi­
ately, even if the parking brake is set.
(D Tips
Fo r safety reasons, the park ing brake only re­
leases automatically when the drive r's door is
closed.
93

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0
:E: ' The message Danger of rolling away! P not pos­
sible. Please apply parking brake
also appears.
A WARNING
- Only activate the emergency release while
on a level surface or a slight slope.
- The parking tock may only be released using
the emergency release if the parking brake
is set. If it is not functioning, secure the ve­
hicle from rolling using the brake pedal or
other suitable means, such as blocking a
front and a rear wheel. An unsecured vehicle
may roll away, which increases the risk of an
accident.
- To reduce the risk of an accident, you must
not drive when the emergency release is ac­
tivated.
(D Note
- Read and follow the important instructions
about towing
c::;, page 3 74.
- The risk of damage increases if you do not
remove the socket wrench carefully when
resetting the parking lock.
Driving
97

Trailer towing
Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation.
If you plan to tow a trailer, please remember that
the additional load will affect durability, econo­my and performance.
Trailer towing not on ly places more stress on the
ve hicle, it also ca lls for more concentration from
the dr iver.
F or this reason, always follow the operating and
driving instructions provided and use common
sense.
@ Note
If you are going to tow a trailer, you must ac­
tivate the tra ile r operation mode
¢page 100.
Technical requirements
Traile r hitch
Use a weight-carrying hitch conforming to the
gross trai ler weight. The hitch must be suitab le
for your ve hicle and tra iler and must be mounted
securely on the vehicle 's chassis at a
technically
sound
locat ion . Use on ly a trailer hitch with a re­
movable ba ll mount . Always chec k w it h t he t rail ­
er hitch man ufactur er to make s ure t hat you a re
using the co rrect hi tc h.
Do not use a bumper hitch.
The hitch m ust be installed i n such a way that it
does not interfere with the impact -absorbing
bumper sys tem . N o mod ificat ions should be
made to the vehicle exhaust and b rake systems .
Fr om t ime to t ime, che ck t hat all hitch mo unti ng
bol ts rem ain securely faste ned.
W hen you are not tow ing a tra iler, remove the
tra ile r hitc h ba ll mount . This prevents the hitch
from ca using damage shou ld your veh icle be
s truck from behind¢ &..
98
Trailer brakes
If your trailer is equipped wi th a bra king sys tem,
c h ec k t o be sure that it con forms to all regu la ­
tions.
The trailer hydrau lic br ake system mus t not be
directly connecte d to the vehicle's hydr auli c
brake system ¢&. .
Safety chains
Always use safety chains between your vehicle
and t he tra ile r.
Trailer lights
Trailer lights must meet all regulations. Be sure
to check w ith your author ized Audi dealer for cor­
r ect wir ing , sw itches and relays .
Mirrors
If you are unab le to see the traffic behind you us­
i ng the regular outs ide mirrors, then you
must in­
stall extended mirro rs. It is important that you
always have clear vision to the rear.
A WARNING
-
- After remov ing the tra iler hitch, do not
sto re it in your vehicle . In case of sud den
braking , th e hitch co uld fl y forwar d and i n­
jure you o r yo ur passenge rs.
- I f a tra ile r has e lectr ica l brakes p lease no te
t h at the se brakes are not ac tivated by the
fact ory-fi tted contro l uni t - r isk of accident!
- N ever i nst all a "we igh t distribut ing" or
"lo ad equ alizing" trailer hi tch o n yo ur veh i­
cle. The vehicle was not desig ned fo r these
kinds of trailer hitches. The hitch attach ­
ment can fai l, ca us ing the tra iler to tear
loose from the vehicle .
- The Gross Veh icle Weight Rating for your
veh icle, found on the safety compliance la­
be l on the driver's s ide B -pillar, m ust never
be exceeded under any circumstances. Ex­
ceed ing the Gross Vehicle Weight Rati ng of
your veh icle is likely to damage yo ur vehicle,
and such damage will not be covered by
your Limi te d N ew Vehicle War ranty. Exceed ­
ing the G ros s Ve hicl e W eight Ratin g will al-
so ch ange the pe rform ance and ha ndling .,._

u co ...... N r-... N ...... 0
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:E: ' characteristics of your vehicle, which could
cause a crash resulting in serious injury or
death.
Operating instructions
Trailer towing weights
The maximum permissible unbraked trailer
weight is 1,650 lbs (750 kg) .
The maximum permissible braked trailer weight
is:
- Q7 2.0: 5,500 lbs (2,500 kg)
- Q7 3 .0: 7,700 lbs (3,500 kg)
These specifications apply when driving on roads having an incline of less than 12% .
Permissible tongue load
For best vehicle handling under these changed
conditions, adjust the trailer load so that the
tongue load is at the maximum allowable or
slightly lower . You can get an approximation of
the tongue load with a bathroom scale or you can
measure the load at a trucking company or
weighing station.
The maximum permissible load on the ball hitch may not exceed:
- Q7 2.0: 550 lbs (250 kg)
- Q7 3 .0: 770 lbs (350 kg)
It is recommended to use the maximum permis­
sible load. Please also observe the information
¢page 343, ¢page 347.
Trailer load distribution
Be sure the load in the trailer is held securely in
place to prevent it from shifting forward, back­
ward or sideways.
Never allow a passenger to ride in a trailer¢.&.
in Messages on page 100.
Ball mount
The trailer hitch may only be used with suitable ball mount and ball. Installation of the hitch ball
must be carried out in accordance with the manu­
facturer's instructions .
Trailer towing
Engine cooling system
Towing a trailer makes the engine work harder. It
is important that the cooling system's perform­
ance is up to the additional load. Make sure that
the cooling system has enough fluid.
Tire pressure
When towing a trailer, inflate the tires of your
vehicle to the tire pressure listed under "Full
load" on the label <:!;>
page 343. Inflate trailer
tires to trailer and tire manufacturers' specifica­
tions.
Lights
The headlight settings should be checked with
the trailer attached before driving off. Check to
make sure both vehicle and trailer lights are
working properly.
Safety chains
Be sure trailer safety chains are properly connect­
ed from the trailer to the hitch on the vehicle .
Leave enough slack in the chains to permit turn­
ing corners. When you install safety chains, make
sure they will not drag on the road when you are
driving.
The chains should cross under the trailer tongue
to prevent it from dropping in case of separation
from the hitch.
Setting drive select(air suspension)*
Make sure the vehicle is on a level surface before
hitching the trailer and before adjusting the
tongue weight. The driving mode must be in
Au­
to or Comfort ¢page 134, ¢ (D
If you would like to drive in the Dynamic driving
mode, then you must select this mode before
hitching the trailer and before adjusting the
tongue weight. Please note that your vehicle will
lower and the ground clearance is reduced.
If you have to drive through difficult road condi­
tions, you can raise the vehicle again after hitch­
ing the trailer or after adjusting the tongue
weight
¢ page 136.
(D Note
Vehicles with air suspension*:
99

Trailer towing
- Changes in temperature or load can affect
the height of the vehicle .
- Always se lect
Auto or Comfort mode. Ot h­
erwise, the tongue load specified for your
vehicle will no longer be applicable.
Messages
Driving with a trailer requires extra caution .
Weight distribution
Towing a loaded trailer with an empty car res ults
i n a hig hly unstable dist ribution of weight. If this
cannot be avo ided, drive at ve ry low speeds o nly
to avoid the risk of lo sing s teeri ng con trol.
A "balanced" rig is eas ie r to operate and cont rol.
T his means that the tow veh icle should be loaded
to the exte nt poss ible a nd permiss ible , while
keep ing the tra ile r as lig ht as possib le unde r th e
circumstances . Whenever possible, transfer
some cargo to the l uggage compa rtment of the
tow vehicle whi le observ ing tongue load req uire­
ments and ve hicle loading considerat ions.
Speed
T he higher the spee d, the more d ifficult i t be­
comes for the drive r to co ntro l the rig. Do not
drive at the maximum permissible speed. Reduce
your speed even more if load, weather or w ind
conditions a re unfavorable -part icularly when
going downhill.
Re du ce veh icle spee d
immediately if the trai le r
shows the s lightest sign o f swaying.
Do not try
to stop the sway ing by accele rating .
Observe speed lim its. In some areas, speeds for
ve hicles towing trai lers are lower than for reg ular
veh icles.
A lways app ly b rakes early. When dr iv ing down ­
hi ll, shift into a lower gear to use the engine
braking effect to slow the veh icle. Use of the
brakes a lone can cause them to ove rheat and fail.
Air suspension*
If you are connecting a trailer to a fa cto ry -ins tal­
led trai ler hitch, trai ler mode a utomat ic all y
switches on in the ai r suspensio n. This will limit
the reg ulation by the a ir s usp ension whi le dr iv -
100
ing . If you want to swi tch off tra iler mode wh ile
driving, for example when using a bicycle rack system, se lect in the Infota inment system :
IM ENUI button> Vehicle > left control button>
Vehicle settings > Air suspension: trailer .
If the vehicle has a retrofitte d tra iler hitc h, the
trailer mo de might not switch on automatically .
In this case, switch the tra iler mode on before
hitc hing the tra iler and switch it off after un­
hitc hing the tra ile r.
Coolant tempe rature
The coo lant tempe rat ure gauge c:::> page 11 m ust
be obse rved caref ully. The coolant temperature
can increase if you drive o n long inclines in a low
gear at high eng ine speeds. Reduce your speed
i mmediately if the LEDs in the top part of the d is ­
play turn on .
Fo r more information about indicator lights, re­
fer to.
c:;, page 26.
A WARNING
Anyone not prope rly res trained in a moving
v e hicle is a t a much greater risk in an acci ­
d ent. Never l et anyon e ride in your car who is
n ot prope rly we aring the rest rain ts provide d
by Au di.
Trailer towing
information
' Important to know
-
You r vehicle handles d ifferently when towing a
t railer becau se o f th e ad dit iona l we igh t and dif­
f erent we igh t d istribu tion. S afety, per forman ce
and eco nomy will g reatly depend on how caref ul­
l y you load your trai ler and operate yo ur rig .
B efo re yo u ac tually tow yo ur trailer, pra ct ice
tu rning, s to p ping and b acking up in an are a away
from traffic. Keep pra ct icing u nti l yo u h ave be­
come comp lete ly familiar w ith the way yo ur vehi­
cle-tra ile r combination behaves and responds .
Bac king up is diff icul t and requ ires pra ctice.
Backing up w ith a trailer genera lly req uires steer ­
ing action opposite to that when backing up your
vehicle witho ut a t railer .

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:E: ' Maintain a greater d istance between your vehicle
and the one in front of you. You wi ll need more
room to stop. To compensate fo r the tra iler, yo u
will need a larger than normal turn ing rad ius.
When pass ing, remember t hat you cannot accel ­
erate as fast as you norma lly wou ld because of
the added load. Make s ure you have eno ugh room
to pass. After passing , allow plenty of room fo r
your tra iler before changing lanes again.
Avoid jerky starts, s harp turns or rapid lane
changes .
(D Tips
-Do not tow a trailer during t he br ea k-in per i­
o d of yo ur vehicle .
- If you tow a trailer, your Audi may require
more frequent maintenance due to the ex ­
tra load
~ page 381.
Parking on a slope
Do not pork on o slope with o trailer . If it cannot
be avoided, do so only ofter doing the following:
When parking:
" Apply the f oot brake.
" Have someone p lace chocks under both the ve­
hicle and the tra il e r whee ls .
" Wi th chocks in p lace, slowly release t he b rakes
u nti l the w hee l chocks absor b the load.
" Turn the wheels towa rds the curb.
" Apply the pa rking brake.
" Move the se lector lever to P .
When restarting after parking:
"Apply the foot b rake.
" Start the engine .
" Move t he se lecto r lever to D/S.
" Release the parking brake and slowly pull out
and away from t he whee l chocks.
" Stop and have someone retrieve t he wheel
chocks .
Trailer towing
101

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:E: ' operation. You are always responsible for
your speed and the distance between your
vehicle and other vehicles.
- For safety reasons, cruise control should not
be used in the city, in stop-and-go traffic, on
winding roads and when road conditions are poor (such as ice, fog, gravel, heavy rain and
hydroplaning), because th is increases the
risk of an accident.
- Switch the cruise control off temporar ily
when driving in turn ing lanes, h ighway exits
o r in construction zones.
- Please note that unconsciously "resting"
your foot on the accelerator pedal prevents the cruise control from b raking. This is be­
ca use p ressing the acce le ra to r peda l ove r­
rides the cruise contro l system.
- If a brake system ma lf u nction such as over­
heating occurs when the c ruise contro l sys­
tem is switched on, the braking function in
the system may be switched off . The rest of
the cruise control system functions remain act ive as long as the
@;\l)Mj (USA models) /
Bl (Canada models) indicator light is on.
Before driving downhill a long distance on a
steep hill, decrease your speed and select a
lower gear. Th is makes use of the eng ine
braking effect and relieves the brakes.
(D} Tips
The brake lights turn on when the brakes are app lied a utomat ically.
Changing the speed
Applies to: vehicles with cruise control system
.,. To increase/decrease the speed in 1 mph (1
km/h) increments, br iefly
tap the lever toward
0 10 ¢ page 102, fig. 96 to the first level.
.,. To inc rease/decrease the speed in 5 mph (10
km/h) i ncrements, br iefly
tap the lever toward
0 10 to t he second level.
.,. To increase or decrease the speed quickly,
hold
the lever toward 0 10 to the first or second
level until the desired speed is reached .
Ass ista nce sys te m s
Overriding the speed
Applies to: vehicles with cruise control system
You can press the acce le rato r pedal to increase
you r speed, for ex ample if you want to pass
someone . The speed you set ear lier will resume
as soon as you release the acce lerator pedal.
However, if you are exceeding the stored speed
by a considerable amount fo r a long time, the
c ruise contro l system will tempora rily switch off.
The
1Q;jl )~ij (USA mode ls) 1111 (Canada mode ls) in­
dicator light in the instrument cluster turns
off
and the stored speed is maintained.
Preselecting a speed
Applies to: vehicles with cruise control system
You can pre-select your desired speed when the
vehicle is stationary.
.,. Switch the ignit ion on.
.,. Pull the lever into position
(D ¢ page 102,
fig.
96.
.,. To increase or decrease the speed, tap the lever
toward
0 10 .
This function makes it possible, fo r example, to
save the speed you want before driving on the
highway. Once you are on the expressway, acti­
vate the cruise control system by pulling the lev­ er into position
(D .
Switching off
Applies to: vehicles with cruise control system
Deact ivating temporarily
.,. Press the brake pedal, or
.,. Press the lever toward @(not locked into
p lace)
¢ page 102, fig . 96.
Switching off completely
.,. Press the lever into position @(clicked into
place), or
.,. Switch the ignit ion off .
The speed you stored will be maintained if the cruise contro l has been switched off temporarily .
To resume the stored speed, release the brake pedal and pull the lever to position
(D . .,.
103

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0
:E 30 mph (SO km/h) and the system classifies the
possibl e pass ing maneuver as low. For example,
if a vehicle that was already detected @turns or
changes lanes, the adaptive cruise control reac ts
to the stationary vehicle ahead of it@ .
Switching on /off
App lies to: vehicles with Audi adaptive cruise contro l
Fig. 104 Operat in g lever: switc hing on and off
Fig. 105 Instr ument clus te r: adap tive cru ise cont ro l
You can set any speed between 20 and 95 mph
(30 and 150 km/h).
Indicator lights and messages in the instrument
cluster display inform you about the current sit­
uation and setting .
An additional indicato r appears in the head-up
d isplay* .
Switching adaptive cruise control on
.. Pull the lever toward you into position@
¢fig. 104 .
Storing the speed and activating regulation
• To store the current speed, press the lSE Tl but­
ton ¢
fig. 104. The stored speed is shown in the
speedomete r in the LED line @ and appears
briefly in the status line@¢
fig. 105.
Assistance systems
• To activate the regulation while stationary, also
press the brake pedal.
Switching adaptive cruise control off
• Push the lever away from you into position @
until it clicks into place. T he message ACC: off
appears.
@ Indicator lights
II-adaptive cruise control is switched on . No
vehicles are detected ahead. The stored speed is
maintained.
• -a veh icle dr iving ahead was detected . The
adaptive cruise control system regu lates the
speed and distance to the vehi cle driving ahead
and acce le rat es/b rakes automat ically.
• -adaptive cruise control is switched on . Ave ­
hicle was detected ahead. Your ve hicle is station­
ary and w ill not start driving automat ica lly .
fai-adaptive cruise control is switched on. No
vehicles were detected ahead . Your vehicle is sta ­
t iona ry and will not start driving automatically.
•- the automatic braking is not enough to
maintain a sufficient distance to a vehicle driving
ahead . You must intervene
¢ page 112, Driver
intervention request.
© Instrument cluster display
If the Driver assistance display is not shown in
the instrument cluster d isp lay, you can open it
using the multifunction steering wheel buttons
¢page 12.
Based on the graphic disp lay, you can determine
if the system is maintain ing a d istance to the ve­
hicle driving ahead and what that distance is.
No vehicle -no vehicle was detected driving
ahead .
Silver vehicle -a vehicle was detected driving
ahead .
Red vehicle -request for driver intervention
¢page 112.
The five distance bars on the gauge © represent
the set distance (refer to¢
page 111 for info r-
mation on how to change the d istance). If you .,.
109

Ass is tance sy stems
fall below the se lected distance, the distance
bars become red from the bottom upward.
A WARNING
--:-- ~~ If you press the ISETI button when driving at
speeds below 20 mph (30 km/h), the vehicle
accelerates automat ica lly up to 20 mph (30
km/h), which is the m inimum speed that can
be set.
(D Tips
- If you switch the ignition or the adapt ive
cruise control system off, the set speed is
erased for safety reasons.
- The electronic stabilization control (ESC)
and the anti-slip-regulation (ASR) are auto­
matically sw itched on when the adaptive
cruise control is switched on .
Changing the speed
Applies to: vehicles with Audi adaptive cruise contro l
0
f
J
0
F ig. 106 Operat ing lever: c hanging th e speed
"To increase/decrease the speed in 1 mph (1
km/ h) increments, br iefly
tap the lever toward
0 10 ¢ fig . 106 to the first level.
• To increase/decrease the speed in S mph
(5 km/h or 10 km/h) increments, briefly
tap
the leve r toward 0 10 to the second level.
" To increase or decrease the speed quickly, hold
the lever towards
0 10 up to the first or sec ­
ond level until the red LED@ reaches the de ­
sired speed
¢ page 109, fig. 105.
You can a lso prese lect the speed when adaptive
cruise control is not active by moving the lever in
l) Th is is not ava ilab le in some countries.
110
the desired direction G) !Q . Activate the previ ­
ously selected speed by pulling the lever into po­
s ition (I)¢
page 109, fig. 104 .
After each change, the new stored speed appears
briefly in the status line ¢
page 109, fig. 105 @.
When adaptive cruise control is active, the B in­
dicator light turns on and when adapt ive cruise
contro l is not active, the
ii ind icator light turns
on. In the Aud i virtual cockp it*, the
II indicator
light turns on instead .
Driving in stop-and-go traffic
Applies to: vehicles with A udi adapt ive cr uise control
F ig. 107 Instrument cl uster: safe start monitor
The adaptive cru ise control system also assists
you in stop-and-go traffic. If a vehicle driving
ahead stops, yo ur vehicle will brake and stay at a
stop within the limits of the system.
" To resume driving with adaptive cruise contro l,
tap the accelerator pedal or
• Pull the lever toward yo u into position @
¢page 111, fig. 108.
Starting to dr ive with adaptive cruise
control
1 )
As long as the message A CC: aut omati c go dis­
plays and the veh icle dr iv ing ahead starts to
move, your vehicle will start driving¢& . You can
activate
ACC: automatic go again for a short
time by pulling the lever to position @.
Fo r safety reasons, your vehicle w ill only start to
drive automatically if:
- the drive r's safety belt is fastened
- all doors and the hood are closed

u (0 ...... N r--. N ...... 0
0
- your vehicle is not stationary for mo re than
three minutes
Safe start monitor
If an obstacle is detected when you start driving,
you will be alerted to the danger by the. indi­
cator light and the image in the instrument clus­
ter disp lay<=>
fig. 107 <=> & .An audio signal will
also sound . Your vehicle will drive more s lowly
when starting. This may also happen in some sit­
uations when there is no apparent obstacle.
- Press the brake pedal to slow your vehicle
down.
.&_ WARNING
If the message ACC: automatic go1> appears,
your vehicle will start driving even if there is an obstacle between your vehicle and the ve­
hicle driv ing ahead . This increases the risk of
an acc ident.
@ Tips
If adaptive cruise control is active and your
veh icle does not start driving even though the
message
ACC: automatic go1
) appears, you
can start driving by tapping the accelerator
pedal.
Interrupting cruise control
Applies to: vehicles with Audi adaptive cruise control
Fig. 108 Selec to r leve r
Requirement: adaptive cruise control must be
switched on .
~ ll This is no t ava ila ble in so m e co untries.
Assistance systems
Overriding cruise control
.,. To accelerate manually, pull the lever toward
you into position @and hold it there or press
the acce le rator pedal. The message
ACC: over­
ride
appears .
.,. To resume cruise control, release the lever or
take your foot off the accelerator pedal.
Canceling cruise control while driving
.,. Move the lever into position @. Th e message
ACC: standby appears . Or
.,. Press the brake pedal.
.,. To resume the stored speed, move the lever in­
to position @ .
Canceling cruise control when stopped
.,. Push the lever away from you into position@.
The message
ACC: standby appears.
.,. To resume cruise contro l, press the brake pedal
and pull the lever toward you into posit ion @.
.&_ WARNING
-==
It is dangerous to activate cruise control and
resume the stored speed when the current
road, traffic o r weather conditions do not per­
mit this . This increases the risk of an accident.
Setting the distance
Applies to: vehicles wit h Audi adaptive cruise control
,
0
Fig. 109 Operat ing leve r: sett ing t he dist ance
.,. Tap the switch to display the current set d is­
tance
<=> fig . 109.
.,. To increase or reduce the d istance in incre­
ments, tap the switch upward/downward
111