2017 AUDI A4 brake

label is located on the driver's side B-pillar. In­
f late trai ler tires to trailer and tire manufactur­
ers' specifications.
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 tra iler to the hitch on the vehicle.
L eave enough slack in the chains to permit turn­
ing corners. When you install safety chains, make
sure they wi ll not drag on the road when you are
driving.
The chains shou ld cross under the trailer tongue
to prevent it from dropping in case of separation
from the hitch.
Driver messages
Driving with a trailer requires extra caution .
Weight distribution
Towing a loaded trailer w ith an empty car results
in a high ly unstable dist ribution of weight . If this
cannot be avo ided, drive at very low speeds only
to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and cont rol.
This means that the tow vehicle should be loaded
to the extent possible and permissible, while
keeping th e trailer as light as possib le under the
circumstances . Whenever possib le, transfer
some cargo to the luggage compartment of the
tow vehicle whi le observing tong ue load require­
ments and vehicle loading considerations.
Speed
The higher the speed, the more difficult it be­
comes for the driver to contro l the rig. Do not
drive at the maximum permissible speed. Reduce
your speed even more if load, weather or wind
<( conditions are unfavorable -particularly when a,
;::; going downhill. ,....
N .... 0 0
3 a,
Trailer towing
Reduce vehicle speed immediately if the trailer
shows the slightest sign of swaying.
Do not try
to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds for
vehicles towing trailers are lower than for regular
vehicles .
Always apply brakes early. When driving down­
hill, shift into a lower gear to use the eng ine
braking effect to slow the vehicle . Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
T he coolant temperature gauge~ page 11 must
be obse rved carefully. The coolant temperature
can increase if you drive on long inclines in a low
gear at high engine speeds . Reduce your speed
immediately if the LEDs in the top part of the dis­
play turn on.
For more information about indicator lights, re­
fer to.
~ page 31 .
A WARNING
= -
Anyone not properly restrained in a moving
vehicle is at a much greater risk in an acci­
dent. Never let anyone ride in your car who is
not properly wearing the restraints provided
by Aud i.
Trailer towing
information
Important to know
Your vehicle handles differently when towing a
trailer because of the addit ional weight and dif­
ferent weight distribution . Safety, performance
and economy will greatly depend on how careful­
ly you load your trailer and operate you r rig.
Before you actually tow your trailer, pract ice
turning, stopping and backing up in an area away
from traffic . Keep pract ic ing until you have be­
come complete ly familiar w ith the way your vehi­
cle-trailer combination behaves and responds.
91

Trailer towing
Backing up is difficult and requires practice .
Backing up with a trailer generally requires steer­
ing action oppos ite to that when backing up your
veh icle w ithout a trailer .
Maintain a g reater distance between your vehicle
and the one in front of you. You w ill need more
room to stop. To compensate for the tra iler, you
will need a larger than normal turn ing radius.
When passing, remember that you cannot accel ­
erate as fast as you norma lly would because of
the added load. Make sure you have enough room
to pass. After passing, allow plenty of room for
your tra iler before chang ing lanes again .
Avoid jerky starts , sharp turns or rapid lane
changes .
@ Tips
- Do not tow a trailer during the break -in per i­
od of your vehicle.
- If you tow a trailer, your Audi may require
more frequent maintenance d ue to the ex ­
tra load
~ page 363.
Parking on a slope
Do not pork on a slope with a trailer. If it cannot
be avoided, do so only o~er doing the following:
When parking:
.. Apply t he foo t brake .
.. Have someone place chocks under both t he ve­
hicle and the tra ile r whee ls .
.. With chocks in p lace, slowly release t he brakes
u ntil the whee l chocks absorb the load .
.. Turn the wheels towards the curb .
.. Apply the parking brake .
.. Move the selector lever to P .
When restarting after pa rking:
.. Apply the foot brake .
.. Start the engine .
.. Move the selector lever to D/S .
.. Release the parking brake and slowly pull out
and away from the wheel chocks .
.. Stop and have someone retrieve t he wheel
chocks .
92

Ass is t
The stored speed and the [ij;ji j~i4 (USA models)/
Ill (Canada mode ls) indicator light appear in the
instrument cluster disp lay . An add itiona l indica­
tor appears in the Head -up display*.
The speed is maintained by modifying engine power or through an active brake intervention.
A WARNING
- Always pay attention to the traffic around
you when the cruise control system is in op­
eration. You are always responsible for your
speed and the distance between your vehi­
cle and other veh icles .
- For safety reasons, cruise control should not
be used in the city, in stop-and-go traffic, on
winding roads and when road condit ions are
poo r (such as ice, fog, gravel, heavy rain and
hydroplaning), because t his increases the
risk of an accident.
- Switch the cruise cont rol off temporar ily
when d riving i n turn ing lanes, h ighway exits
or in construction zones .
- Please note tha t unconsciously "resting"
yo ur foot on the accelerator pedal prevents
the cruise control from braking. This is be ­
cause pressing the acce lerato r pedal ove r­
rides the cruise contro l system.
- If a brake system ma lf u nction such as over ­
heating occurs when the cruise control sys­
tem is sw itched on, the braking function in
the system may be sw itched off. The rest of
the cruise control system functions remain
active as long as the
[ij;(l)~i4 (USA models) I
i:I (Canada models) indicator light is on.
(D Note
Before driving a long d istance on a steep
downward hill, decrease your speed and se­
lect a lower driving gea r. This makes use of
the engine b raking effect and relieves the
brakes.
(0 Tips
The b rake lights turn on when the brakes are
app lied automatically .
94
· Changing the speed
Applies to: vehicles with cruise control system
.,. To increase/decrease the speed in 1 mph (1
km/h) incremen ts, briefly
tap the lever toward
0 10 c::> page 93, fig . 88 to the first level.
.. To increase/decrease the speed in
S mph (10
km/h) increments, briefly tap the lever toward
0 10 to the second leve l.
.. To increase or decrease the speed qu ickly,
hold
the lever toward 0 10 to the first or second
level unt il the desired speed is reached .
Overriding the speed
Applies to: vehicles with cruise control system
You can press the acce lerator pedal down to in­
c rease yo ur speed, for example if you want to
pass someone. The speed yo u sto red earl ie r w ill
r esume as soon as yo u release the acceler ator
pedal.
Howeve r, if yo u are exceedi ng the stored speed
by a considerable amount fo r a long time, the
c ruise contro l system will temporarily switch off.
The m:iJm (U SA mode ls) ! Ill (Canada models) in­
dicator light in the instrument cl uster turns off
and the stored speed is retained.
Preselecting a speed
App lies to: vehicles wit h cruise control system
You can pre -select your desired speed when the
vehicle is stationary.
.,. Switch o n the ignition.
.. Pull the lever into pos ition
(I) c::> page 93,
fig. 88 .
.. To increase or decrease the speed, tap the lever
in the
0 10 direction.
This function makes it possible, for example, to
save the speed you want before driving on the highway. Once on the expressway, act ivate the
cruise contro l by pull ing the lever into posit ion
(I) .

Ass is t
A WARNING
Pay att ention to traffic a nd the area ar ound
yo ur vehicle wh en th e effici ency assist is
switched on . The dr iver is always respon sible
for correctly assess ing the traffic situation .
@ Tips
- The wording of the message may vary de­
pending on the driving mode set in dr ive se­
l ect*
r::::> page 121 and the current selector
l eve r pos ition . No messages a re displayed
whe n in the S selector leve r pos ition or in
d ynami c mode.
- When a route is planned using the naviga­
tion system*, then the message fee d is
b ased on this rou te. W ithout rou te g uid­
ance, the system uses an assumed ro ute for
the message feed.
- T here will not be a message for every si tua­
tion ahead, for examp le if there is not
eno ugh distance remaining to react to the
situation.
- No messages are displayed when at s peeds
under 20 mph (30 km/h) .
Settings in the Infotainment system
A ppl ies to: ve hicles w ith predi ctive e fficiency assist
.. In the Infotainment system, select: I MENU I
button > Vehicle > left contro l button > Driver
assist
> Effi ciency assist .
Predictive messages are shown when this f unc­
tion is sw itched on.
{D) Tips
No p redictive messages are shown on veh icles
w ithout a navigation system.
96
Audi adaptive cruise
control
Description
App lies to : vehicles wi th Audi adap tive c ru ise con trol
Fi g. 89 Detect io n range
The adaptive cru ise cont rol system is a comb ina­
tion of speed and dis tance regu lation.
It ass ists
t h e d river by bo th regu lating the speed and
maintain ing a d is ta nce to the vehicle driv ing
ahead, within the limits of the system. If the sys ­
tem detects a vehicle d riving ahead, the adaptive
cruise contro l can brake and accelerate yo ur vehi­
cle. T his makes driving more comfo rtable both
o n long st retches of hig hway and in stop-and-go
traffic .
What can adaptive cruise control do?
The adaptive cru ise control system uses video, ra­
dar, ultrasound and navigat ion data . Vehicles
driv ing ahead can be recognized up to 650 feet
(200 m) away .
Pred ictive functions offer the drive r additional
comfort and contr ibute to the reduct ion in fuel
consumption a nd CO2 em issions
r::::> page 102.
On open roads with no traffic, it functions like a
cruise contro l system. The stored speed is main ­
ta ined . When approaching a vehicle d riving
ahead, the adaptive cruise contro l system auto­
matically brakes to match that vehicle's speed
and then maintains the set dis tance. As soon as
the system do es not detect a vehicle dr iv ing
ahea d, adaptive cruise cont rol accelerates up to
t h e s to red spee d.
In stop-a nd-go traffic, adap tive cruise control can
brake until the veh icle is sta tionary a nd then can .,.

also start driving again automatically under cer­
tain conditions
c!;> page 100.
In traffic jams or slow-moving traffic, congestion
assist can assist the driver¢
page 104 .
Which functions can be controlled?
When you switch adaptive cruise control on, you
can set the current speed as the "control speed "
c!;> page 98, Switching on/off.
When driving, you can stop cruise control
c!;> page 100 or change the speed ¢ page 99 at
any time .
You can also set the dist ance to the vehicle d riv­
ing ahead and set the driving mode of the adap ­
tive cruise control¢
page 101 .
General information
Appl ies to: ve hicles with Audi adaptive cruise co ntro l
Fig. 90 Fro nt o f th e ve hicle : sensor s and video c amer a
The areas wi th the radar and ul trasonic senso rs
and the video camera¢
fig. 90 must not be cov­
ered by stickers, deposits or any other objects ,
because this can interfere with the adaptive
cruise control function. For information on clean­ ing, refer to¢
page 337. The same applies for
any modifications made in the front area .
In some driving situations , the adaptive cruise
control function is restricted:
- Vehicle s can only be detected when they are
within the sensor detection zones
¢ page 96,
fig . 89 .
-The system has a limited ability to detect
vehicles that are a short distance ahead, off to
the side of your vehicle or moving into your lane .
Assist
-Objects that are difficult to detect such as mo­
torcycles, v ehicles with high ground clearance
or an overhanging load are detected late or not
detected at all.
- When driving through curv es
c!;> pag e 98.
- When the vehicle is stationary ¢ page 98.
A WARNING
Always pay attention to the traffic around you
when adaptive cruise control is switched on .
As the driver, you are still responsible for your
own speed and the distance to other vehicles.
The adaptive cruise control is used to assist
you . The driver must always take action to
avoid a collision . The driver is always responsi­
ble for braking at the correct time .
- For safety reasons, do not use adaptive
cruise control when the road surface is in poor condition and/or in bad weather condi ­
tions (such as ice, fog, gravel, heavy rain and
hydroplaning). Using the system under
these conditions increases the risk of an ac­ cident.
- Switch adaptive cruise control off tempora­ rily when driving in turning lanes, on ex­
pressway exits (except if predictive control
is switched on) or in construction zones.
This prevents the vehicle from accelerating
to the stored speed when in these situa ­
tions .
- The adaptive cruise control system will not
brake by itself if you put your foot on the ac ­
celerator pedal. Doing so can override the
speed and distance regulation.
- When approaching stationary obstacles
such as stopped traffic, adaptive cruise con­
trol will respond with limited function .
-Adaptive cruise control does not respond to
people, animals, or crossing or oncoming
objects.
- The function of the radar sensors can be af­
fected by reflective objects such as guard
rails, the entrance to a tunnel, heavy rain or
ice.
~
97

Assist
(D Note
The sensors can be displaced by impacts or
damage to the bumper , whee l housing and
underbody. This can impair the adaptive
cruise control. Have an authorized Audi dea ler
or authorized Audi Service Fac ility check their
function .
In curves
Applies to: vehicles with Audi adaptive cruise control
Fig . 9 1 Exa mple: drivin g in to a curve
When driving into a curve<=> fig. 91 and ou t of a
curve, the adaptive cruise control may react to a
veh icle in the neighboring lane and apply the
brakes . You can prevent that by pressing the ac­
celerator pedal b rief ly.
Stationary vehicles
Applies to : vehicles with Aud i adaptive cruise contro l
Fig. 92 Example: vehicl e chang ing lane s and sta tiona ry ve ­
hi cle
Adaptive cruise control can react to a limited ex­
tent to stationary vehicles
c:> fig . 92, as long as
you are driving slow er than SO km/h and the sys­
tem classifies as possible passing maneuver as
low . For example, if a vehicle that was already
detected @turns or changes lanes, the adaptive
98
cruise contro l reacts to the stationary vehicle
ahead of it@ .
Switching on/off
Applies to: vehicles with Audi adaptive cruise control
Fig. 93 Operating lever : sw itc hin g on and off
Fig. 94 Inst rument cluster : adap tive cr uise cont rol
You can set any speed between 20 and 9S mph
(30 and lSO km/h).
Indicator lights and messages in the instrument
cluster display inform you about the cu rrent sit­
uation and setting .
An add itional indicator appears in the Head-up
display *.
Switching adaptive cruise control on
.. Pull the lever toward you into position (D
c=> fig. 93. ACC: standby appears in the display.
Saving the speed and activating regulation
.. To store the current speed, press the ISE TI but­
ton
c:> fig . 93 . The stored speed is shown in the
speedometer in the LED line@ and appears
briefly in the status line
@ c:> fig. 94.
.. To activate the regulation while sta tionary, also
press the brake pedal. .,.

Switching adaptive cruise control off
• Push the lever away from you into position @
unti l it clicks into place. The message
ACC: off
appears.
@ Indicato r lights
I'll -adaptive cru ise control is switched on. No
vehicles are detected ahead. The stored speed is
maintained.
• -A vehicle driving ahead was detected. The
adapt ive cr uise control system regulates the
speed and distance to the vehicle dr iv ing ahead
and accelerates/brakes automatically.
• -adaptive cru ise cont rol is switched on . Ave­
h icle was detected ahead. Yo ur vehicle is stat ion­
ary and will not star t driving automatically.
(-j -adaptive cru ise control is switched on . No
vehicles we re detected ahead . Your vehicle is sta­
tionary and will not start dr iving automati cally.
• -T he automatic brak ing is not enough to
maintain a sufficient distance to a veh icle dr iving
ahead . You must intervene
¢ page 102, Request
for driver intervention.
© In strum ent cluster display
If Dr ive r assis t is not shown in the instrument
cluster display, you can open it using the multi­
function steering wheel buttons
¢ page 12.
Based on the graphic display, you can determine
if the system is maintaining a distance to the ve­
h icle dr iving ahead and what that distance is .
No vehicle -no vehicle was detected driving
ahead .
Silver vehicle -a vehicle was detected driv ing
ahead.
Red vehicle -request for the dr iver to take action
¢page 102.
The five distance bar s on the gauge© rep resent
the set d istance (refer to
~ page 101 for infor­
mat io n on how to change the dis tance) . If you
fa ll below the se lected distance, the distance
bars become red from the bottom upward.
A ss ist
A WARNING
If you press the !SET ! button when driv ing at
speeds below 20 mph (30 km/h), the veh icle
accelerates automatically up to 20 mph (30
km/h), wh ich is the minim um speed that can
be set.
@ Tips
- If you switch the ignition or the adaptive
cruise cont rol sys tem off, the set speed is
erased for safety reasons.
- The e lectronic stabilization control (ESC)
and the an ti-slip-regula tion (ASR) are auto­
matically switched on when the adap tive
cruise cont rol is swit ched on.
Changing the speed
Appl ies to: vehicles wit h Aud i ada ptive cru ise control
0
f
'
0
Fi g. 95 Operat ing lever: changing the speed
"'To increase/decrease the speed in 1 mph (1
km/h) increments, b riefly
t a p the lever toward
0 10 ¢ fig. 95 to the firs t level.
• To increase/dec rease the speed in 5 mph
(5 km/h or 10 km/h) increments, brief ly
tap
the lever toward 0 10 to the second level.
• To increase or decrease the speed quick ly,
hold
the lever toward 0 10 up to the first or second
level unt il the red LED@ reaches the desired
speed¢
page 98, fig . 94 .
You can also preselect the speed when adaptive
cruise contro l is not act ive by moving the lever in
the des ired direction
0 10 . Activate the previ­
ously selected speed by pulling the lever into po ­
sition
(D ¢ page 98, fig . 93 .
After every adjustment, the new stored speed ap­
pears briefly in the status line ¢
page 98, fig. 94 ..,.
99

Ass is t
@ . The B indicator light also turns on when
adaptive cruise control is active and the
Ill indi­
cator light turns on when adaptive cruise contro l
is not active .. In the Audi v irtual cockpit*, the
II
indicator light appears instead.
Driving in stop-and-go traffic
Applies to: vehicles with Aud i adapt ive cruise contro l
Fig. 96 Instru ment cluste r: safe sta rt mo nito r
The adaptive cruise control system also assists
you in stop-and-go traff ic.
If a vehicle dr iv ing
ahead stops, your vehicle will brake and stay at a
stop within the limits o f the system.
• To resume d riving w ith adapt ive cr uise control,
tap the accelerator peda l or
• Pull the lever toward you in to position @
¢page 100, fig . 97.
Starting to drive w ith adaptive cruise
control
1 )
As long as the message ACC: automatic go d is­
p lays and the vehicle d rivi ng ahead starts to
move, your veh icle w ill sta rt driving ¢& . You can
reactivate
ACC: automatic go for a short time by
pu lling the lever to position @.
F or safety reaso ns, your vehicle will only start to
d rive automatically if
- the driver's safety belt is fastened,
- all doors and the hood are closed,
- your vehicle is not stationary for more than
three minutes .
The . indicator light and the indicator in the in­
strument cluster display wi ll warn you about the
danger¢
fig. 96 . An audio signal will also sound.
l) Thi s is no t a vail able in so me c oun tries.
100
- Press the brake pedal to slow yo ur vehicle
down.
A WARNING
If the message ACC: automati c go1l appears ,
your vehicle w ill start driving even if there is
a n obstacle between your vehicle and t he ve­
hi cle dr iving ahead. This increases the ris k of
an accident .
¢j) Tips
- If adaptive cruise control is active and your
vehicle does not start driving even though
the message
ACC: automatic go1> appears,
you ca n start driving by tapp ing the acceler­
ato r pedal.
- If an obstacle is detected when your veh icle
sta rts mov ing, the safe s tart monitor ap­
pea rs ¢
fig. 96. Yo ur vehicle will drive more
slowly when sta rting. This may a lso happe n
in some s itu ations when the re is no a ppa­
rent obstacle .
Interrupting cru ise control
Applies to: vehicles wit h Audi adaptive c ruise control
Fig. 97 Selector leve r
Requirement : adaptive cruise cont rol m ust be
swi tched on.
Overriding cruise control
• To accelerate manua lly, pull the lever toward
you into posit ion @ and hold it there or press
the acce lerato r pedal. The message
ACC : over ­
ride
appears. ...