2017 AUDI A4 light

Assist
-In certain countries: if the system is switch­
ed on, it will remain operable each time the ig nition is switched on.
Lane assist display in the instrument
cluster
A pp lies to: ve hicles with Audi active lane a ssist
F ig . 107 Instrument cl uster (multi -color d isplay): active
lane assist is switched on and rea dy to provide warnings
Fig . 108 Inst rument cluster (monochrome display): active
lane assist is sw itched on
You can open up the Driver assist display for the
active lane ass ist using the mult ifunction steer­
ing wheel buttons
r:::> page 12.
An additiona l indicator appears in the Head -up
d isp lay* .
Multi-Color Display
Refer tor:::> fig. 107
114
Driver assist display Meaning on the corre-
in the instrument sponding side
cluster
Green line(s) Active lane assist is acti-
(left or right) vated and ready to pro-
vide warnings .
Red line Active lane assist warns
(left or right)
you before leaving a lane.
In addit ion, the steering
wheel vibrates lightly.
Gray line(s) Active lane assist is acti-
(left or right)
vated, but is not ready to
give warning
Monochrome display
Refer to r:::> fig. 108
Driver assist display Meaning on the corre-
in the instrument
sponding side
cluster
Light gray line(s) Active lane assist is acti-
(left or right) vated and ready to pro-
vide warnings.
Blinking line(s)
Active lane assist warns
(left or right)
you before leaving a lane.
In addition, the steering
wheel vibrates lightly.
Dark gray line(s) Active lane assist is act i-
(left or right) vated, but is not ready to
. . give warning
Messages in the instrument cluster display
If the active lane assist sw itches off automatical­
ly , the indicator light in the display turns off and
one of the follo wing messages appears:
rl1 Audi active lane assist: currently unavaila­
ble . Camera view restricted due to surround­
ings. See owner's manual
This message appears if the camera is unable to
detect the lines. This could happen if:
- The camera window
¢page 113, fig. 106 is
dirty or covered in ice. Clean this area on the
windshield
r:::> page 337 .
-The camera fie ld of view is fogged over. Wait
until the fog has cleared before switching the
active lane assist on aga in.

<( a, .... N ,....
N .... 0 0
3 a,
The rear cross-traffi c assist is not ava ila ble . E i­
ther the ESC is switched off, or the radar sensors may be covered by a b ike rack, stickers, leaves,
snow or other objects. Switch the ESC on, or
clean the area in front of the sensors if necessary
c> page 116, fig. 112 . If this message cont inues
to be d isplayed, d rive immed iate ly to an au thor­
iz ed A udi dealer o r autho rized Audi Servi ce Fac ili­
ty to have t he malfunc tion repa ired.
Audi drive select
Introduction
Applies to: vehicles with Audi drive select
Drive se lect makes it possible to experience dif­
fe rent types of vehicle settings in one vehicle.
The dr ive r can se lect
Comfort , Auto a nd Dynamic
modes in the I nfota inme nt system to switch be­
tween , fo r exa mple, a sporty and a co mfo rtable
d riving mo de. Settings ca n be ad justed to your
p e rs o nal pr efe ren ces in
Individual m ode. This
makes it poss ible to comb ine settings su ch as a
sporty eng ine setting w ith smooth stee ring.
Descript ion
Applies to: vehicles with Audi drive select
The fo llow ing systems, among other things, are
i nfluenced by drive select:
Engine and automatic transmission
D epending on the mode, the en gine and auto­
mat ic transmission respond more quickly o r in a
mo re balanced ma nner to accelerator pe dal
movements . In the spo rty
Dynamic mode, the
transmission shifts at higher speed ranges.
Steering
The power s teering adapts. Ind irect s teer ing t hat
moves easi ly as in
comfort mode is espec ia lly
suited to long drives on highways . The
dynamic
mode p rovides sporty, d irect steering.
The fo llow ing applies to vehicles wi th dynam ic
steer ing* : the stee ring rat io chan ges base d on
ve hicle speed in or der to ma inta in optim um
steer ing effort for the drive r at all times. This
sets the steer ing to be less sensitive at higher
speeds i n order to prov ide improved vehicle con-
Assist
t ro l. At r educed spee ds, steeri ng is more direct in
o rder to kee p the steering effort as minima l as
poss ib le when the drive r is maneuvering t he vehi­
cle. Dynam ic steer ing* also p rovides more re­
spons ive steering performance at low and aver­
age speeds .
Suspension control*
The ada ptive dampers * use sensors to reco rd in ­
f ormat ion regard ing steering movements, b rak ­
ing and accele ration operations by the dr iver,
road s urface, driving speed, and load. This makes
it possible to adapt damping to the d riv in g situa­
t io n virtu ally in rea l ti me . Wi th drive select, you
can ad just th e adap tiv e dam pers to sporty
(Dy ­
nami c),
comfo rtable (Comfort ) or balan ced (Au­
to ).
Cornering light*
T he co rne ring light adapts the high beams to the
direction of the curve de pending on the speed .
T he pivo ting ac tion and the lighting also a dapt to
t h e mode.
Adaptive cruise cont rol (ACC)*
The behavio r whe n accelerati ng ca n be adjusted
from comfortable to s porty, depending on the
dr ive selec t mode . Adap tive cruise control also
r espon ds to the dr iv ing behav ior of t he vehicle
ahea d in a m ore conse rv a tive or sporty m an ner.
Engine sound*
The eng ine sound adapts to the c urrent mode
and can be subtle to sporty .
(D Tips
The S selector leve r posit ion automatically en­
gages whe n the
Dynamic mode is select ed.
121

Parking systems
Parking systems
General information
A ppl ies to: ve hicles w ith a rea r parking sys te m /pa rking sys ­
tem p lus/rearv iew camera/peripheral ca meras
Depending on your vehicle's equipment , various
parking aids will help you when parking and ma­
neuvering.
The
rear parking system is an audible parking aid
that warns you of obstacles
behind the vehicle
¢ page 125.
Parking system plus assists you when parking by
using audio and visual signals to indicate objects
detected in
front of and behind the vehicle
¢ page 125.
The rearview camera shows the area behind the
vehicle in the Infotainment display . The lines in
the rearview camera image help you to park or
maneuver ¢
page 126. The parking system plus
functions are also available
¢page 125.
The peripheral cameras give various views to
help you when parking or maneuvering
¢ page 128 . fhe parking system plus functions
are also available
¢ page 125.
A WARNING
- Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver 's attention. The driver is always
responsible when entering or leaving a park­
ing space and during similar maneuvers.
- Please note that some surfaces, such as
clothing, are not detected by the system.
-
- Sensors and cameras have blind spots in
which people and objects cannot be detect­ ed . Be especially cautious of small children
and animals .
- Always keep your eyes on the vehicle's sur­
roundings, using the rearview mirror as
well .
- The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody . The park­
ing system may be impaired as a result.
Have an authorized Audi dealer or author-
124
ized Audi Service Facility check their func­
tion .
(D Note
-Some objects are not detected or displayed
by the system under certain circumstances:
- Objects such as barrier chains, trailer draw
bars, vertical poles or fences
- Objects above the sensors such as wall ex­
tensions
- Objects with certain surfaces or structures
such as chain link fences or powder snow
- If you continue driving closer to a low ob­
ject, it may disappear from the sensor range. Note that you will no longer be
warned about th is obstacle .
- Keep enough distance from the curb to
avoid damage to the rims.
(D Tips
-The system may provide a warning even
though there are no obstacles in the cover­
age area in some situations, such as :
- certain road surfaces or when there is tall
grass.
- external ultrasonic sources such as from
cleaning vehicles .
- in heavy rain, snow, or thick vehicle ex­
haust.
- We recommend that you practice parking in
a traffic-free location or parking lot to be­
come familiar with the system . When doing
this, there should be good light and weath­
er conditions.
- You can change the volume of the signals
and the display ¢
page 131.
-Please refer to the instructions for trailer
towing in
¢page 132.
- What appears in the infotainment display is
somewhat time-delayed.
- Th e sensors must be kept clean and free of
snow and ice for park assist to operate.

Intelligent Technology
Intelligent Technology
Electronic Stabilization
Control (ESC)
Description
Elect ronic Stabilization Control (ESC) suppo rts
driver safety.
It red uces the risk of slipping and
improves dr iving stability. ESC detects crit ica l sit­
uations such as when the vehicle is oversteering
a nd understeering or the wheels are spinning.
The vehicle is stabilized by applying the brakes or reducing eng ine torq ue. When the ESC engages,
the
Ji) i n d icator light blinks in the instrument
cluste r.
The fo llow ing systems are integrated in the ESC :
Anti-lock braking system (ABS)
ABS p revents the whee ls from locking whe n brak­
ing. The vehicle can sti ll be steered even during
hard brak ing. Apply steady press ure to the brake
pedal. Do not pump the pedal. A puls ing in t he
b rake pedal indicates that the system is acting to
s tabilize the vehicle .
Brake assist system
The brake assist system can decrease brak ing dis­
tance . It increases brak ing power when the d river
presses the brake pedal q uick ly in emergency sit­
uations . You must press and hold t he b rake pedal
until the dangerous sit uat io n is over . In veh icles
with adapt ive c ruise control*, the bra ke as sist
sy stem is more sensitive if t he di sta nce detec ted
t o the vehicle dr iv ing ahead is too small.
Anti-slip regulation (ASR)
ASR reduces eng ine power when the drive wheels
beg in sp inning a nd adapts the force to the road
conditions . T his makes it easie r to sta rt, acceler­
a te and dr ive up h ills.
Electronic differential lock (EDL)
The EDL brakes w heels that a re spinning and
transfers the drive power to the other drive
wheel or whee ls if t he ve hicle is equipped with a ll
wheel drive*) . T his funct ion is no t av ail able at
h igher spee ds.
134
In extreme cases, EDL automat ically switches off
to keep the b rake on the bra ked whee l from over­
heating. The veh icle is still working correct ly. ED L
will switc h on again automatically when condi­
tions have returned to normal.
Steering recommendation
The E SC he lps to stabili ze the vehicle by changing
the steer ing torque.
I n veh icles with dyn amic steer ing *, ES C also
helps to sta bilize the s teer ing in cr it ic al situa ­
tions.
Selective wheel torque control
Se lective wheel to rque cont rol is used when d riv­
i ng on curves. The fron t whee l on the ins ide of
t h e curve or both wheels on t he i nsi de of the
curve are braked se lective ly as needed. This al­
l ows mo re precise driving in c urves.
Automatic post -collision braking system
The "a utomat ic post-collis io n braking system"
c a n help to reduce t he risk of sliding and of addi ­
tiona l co llisions after an acc ident. If th e airbag
contro l modu le de te cts a collision, t he ve hicle is
bra ked by the ESC.
The veh icle does not br ake automatically if:
- the dr iver presses the acce lera tor pedal, or
- the ESC, the brake system or the veh icle electri-
cal system are not functioning.
&_ WARNING
- The ESC and i ts integ ra ted systems cannot
overcome the lim its imposed by natura l
phys ical laws. This is es pec ially impo rtan t
o n s lippery or we t road s. If the sy stems be­
gin ac ting to s tabilize yo ur vehicle, you
should immediately a lter your speed to
match the road and traffic conditions . Do
not let t he inc reased safety provided tempt
you into taking risks. This could increase
your r isk of a coll is ion.
- Please note the r is k of a coll is ion increases
when dr iv ing fast, especially t hrough c urves
and on sli ppery or wet roads, and when dr iv­
ing too close to objects ahead . T he ESC a nd
its integrated systems cannot always

prevent collisions -there is still a risk of ac­
cidents!
- Press the accelerator pedal carefully when
accelerating on smooth, slippery surfaces
such as ice and snow. The drive wheels can spin even when these control systems are
installed and this can affect driving stability
and increase the risk of a coll ision.
Switching on /off
Intelligent Technology
(D Tips
- The ABS and ASR only function correctly
when all four wheels have a sim ilar wear
condition. Different tire sizes can lead to a
reduction in engine power.
- You may hear noises when the systems de­
scribed are working.
£SC turns on automatically when you start the engine.
--- --function of the ESC is limited or switched off . The
amount of stabilization control wi ll differ de­
pending on the level.
--~
· :.__r" ,? .:'~~
,; ~ ... ,1
·· ----- ~
Fig. 138 Center co nso le w it h button ~ OFF
The following examples are unusua l situations
where it may make sense to switch sport mode on in order to allow the wheels to spin:
- Rocking the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
- Dr iving with snow chains
E SC is designed to function in levels. Depending
on the level that is selected, the stabilization
ESC levels
Sport mode on
Behavior
The ESC and ASR stabiliza-
tion funct ions are limited
~ .&. .
Operation Press the lfl OFFI button
briefly .
Indicator II turns on.
lights
Messages Stabilization control (ESC):
sport. Warning! Reduced
stability
A WARNING
You should only switch sport mode on or
switch ESC/ ASR off if your driving abilities and road conditions permit.
ESC/ASR off Sport mode off or
ESC/ASR on
The stabilization function is The full stabilization func-
no longer available ~.&. . tion of the ESC and ASR is
ESC and ASR are switched available again.
off.
Press and hold the
! fl O FFI Press the lfl OFFI button
button longer than 3 sec- again.
onds.
II and lf'tl•U~ turn on. fl turns off or fl and
lf'tl•l~~ turn off.
Stabilization control (ESC):
Stabilization control
off. Warning! Reduced sta- (ESC): on
bil ity
-The stabilization function is limited when
sport mode is switched on. The driving
wheels could spin and the vehicle could swerve, especially on slick or slippery road
surfaces.
135

Intelligent Technology
- The re is no vehicle stabilizat ion when ESC/
ASR are switched off.
Braking
New brake pads
New b rake pads do not achieve the ir full braking
effect during the first 250 miles (400 km) . They
must be "broken in" first . However, you can com­
pensate for the slightly reduced brak ing force by
pressing firmly on the brake pedal. Avoid heavy
braking dur ing the break-in per iod.
W ear
Brake pad wear depends largely on the way the
vehicle is driven and on operating conditions.
This is especially true if you are driving frequently
in the c ity and on curves or with a sporty driving
style .
Operating noise
Noises may occur when braking depending on the
speed, b raking force and outside conditions such
as tempe rature and humidity.
W et conditions or road salt
In certain s ituations, for example after dr iving
through water, in heavy rain or after washing
your car, the brak ing effect may be reduced due
to mo isture or ice on the brake rotors and brake
pads. The brakes must be "dr ied" first wit h a few
careful brake applications.
At higher speeds and with the windshie ld wipers
turned on, the brake pads press against the brake
rotors for a short amount of time. Th is action,
which is not felt by the driver, happens at regular
i n tervals a nd ensu res a better reaction time for
the bra kes in wet weather .
The braking effect can also be reduced if you are
driving on salted roads and you do not apply the
brakes fo r long periods of time . The laye r of salt
on the brake rotors and pads must be wo rn off
fi rst when the b rakes are app lied.
Corrosion
Leaving the vehicle parked for long periods of
time, low mi leage and avo iding heavy brak ing
136
can con trib ute to corros ion on t he b rake roto rs
and to dirty brake pads .
I f you usu all y avoid he avy br aking or if there is
corrosion present, occasiona l heavy brak ing at
high speeds is recommended to clean the brake
rotors and pads~.&. .
Brake system malfunction
if you not ice that the b rake peda l t ravel has sud­
denly gotten larger, t hen a b rake c ircuit in the
dual-c ircuit brake system may have failed. Drive
to an authorized Audi dea ler o r authorized Audi
Se rvice Facility immediate ly to have the prob lem
corrected . On the way there, dr ive with reduced
speed and keep in mind tha t you w ill need a lon­
ger distance to stop and you will need to press
the brake pedal harder.
l o w brake fluid level
When the brake fluid level is low, malfunctions in
the brake system may occur. The brake fluid level
i s electronically monitored.
Brake booster
The bra ke boos ter amp lifies the p ressure yo u ap ­
ply to the brake pedal. It only wor ks when the en­
gine is running .
A WARNING
- Only app ly the bra kes for the purpose o f
cleaning the brake system w hen road and
traffic conditions permit. You must not en­
danger other road users. This i ncreases the
r is k of an accident.
-
- Never let the ve hicle roll while the engine is
s to pped because t his i ncreases the ris k of an
acciden t.
Q) Note
- Never let the brakes "rub" by pressing the
peda l lightly when braking is not actually
necessary . This causes t he b rakes to over ­
heat and incr eases brak ing distanc e and
c a u ses we ar.
- Before driving a long d istance o n a steep
d ownward hill, decrease your speed a nd se-
le ct a lo wer driving gear. This m akes use of
1111>

<( a, .... N ..... N .... 0 0
3 a,
the engine braking effect and relieves the brakes.
If you need to brake additionally,
brake in interva ls and not continuously .
(D Tips
-If the brake booste r is no t working, you
must p ress the brake pedal with much more
fo rce than norma l.
- If you retrofit you r vehicle with a front spoil­
er, whee l covers or s imilar items, make sure
that the air flow to the front whee ls is not
i nterr upted. Otherw ise the brake system
can become too hot .
Electromechanical power
steering, dynamic
steering
The electrom echanical steering supports th e
driver's steering movements.
P ower steering adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Steering : malfunction! Plea se stop vehicle
If th is ind icator lig ht turns on and stays on and
this message appears, the power steer ing may
h ave fa iled.
Stop the vehicle in a safe locat io n as soon as pos­
sib le . Do
not continue dr iving . See an a uthor ized
Aud i deale r or autho rized Aud i Serv ice Faci lity fo r
assistance .
':r-ij Steering: malfunction! You may continue
driving
If the indicator lig ht t urns on and the message
appears, the steering w heel may be mo re diffi­
cult to move or more sensitive than usual. The
steer ing whee l may also be at an angle when
d riving s tra ight.
Drive s low ly to an author iz ed Audi dealer or au­
thor ized Audi Service Facility to have the ma l­
f u nction corrected .
~ Dynamic steering: correcting steering wheel
position
Intellig ent Technology
If the indicator ligh t turns on and this message
appears, the dynamic steering* is re init ializing.
The steeri ng whee l will be easy to move after
start ing the engine. Reinitiali zation might be
necessary if the steering wheel was moved whi le
the engine was sw itched off . The disp lay turns
off if the initializat ion was successf ul.
(D Tips
- If the . or ':r-ij indicato r light only stays on
for a sho rt time, you may cont inue drivi ng.
- The dynamic steering stability systems
c:.> page 134 are not ava ilable in the event of
a system malfunc tion.
- Fo r add itiona l information on dynamic
steeri ng, refer to
c:.> page 121.
ALL wheel drive (quattro)
App lies to : vehicles wit h all w heel drive
In all wheel drive, all four wheels are pow ered.
General information
In all wheel dr ive, the dr iving power is divi ded be­
tween all four wheels . T h is happens aut omatical­
ly depending on your dr iv ing behav ior as we ll as
the cur rent road condit ions . A lso refer to
c:.> page 134 , Electronic Stabilization Control
(ESC) .
A center d ifferential d istributes the driving powe r
var iably to the front and rea r axle .
It works to­
ge ther w it h selec tive whee l to rque contro l, w hich
activates when driving thro ugh curves
c:.> page 134.
The all wheel dr ive concept is des igned for high
engi ne power . Yo ur vehicle is exce ptionally pow­
erfu l and has excell ent driv ing cha rac teristics
bot h unde r normal d riving conditions and o n
sn ow and ice. A lways rea d and follow s afety pre­
ca utions
c:.> &. .
Winter tires
By using all wheel dr ive, your ve hicle has good
forward mot ion w it h standard ti res in win ter con­
di tions. However, i n w in te r, we re co m men d using
winter or all sea so n t ires on
all four whee ls, be-
c au se this will improve the
braking effec t. ..,.
137

Intelligent Technology
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with a ll wheel drive
¢ page 332, Snow chains.
Replacing tires
For vehi cles w ith all whee l dr ive, only whee ls with
the same rolling circumferen ce shou ld be used .
Avoid using tires w ith different tread depths
¢ page 324, New tires or wheels .
Offroad vehicle?
Your Audi is not an offroad vehicle - the re is not
e nough g ro und clea rance. For this reason, avo id
d iffi cult terrain .
_& WARNING
-Also, in vehicles with all wheel drive, adapt
yo ur driving style to the current road and
t raffic conditions . Do not let the increased
sa fety provided tempt you into tak ing risks,
because th is increases the r isk of an acci­
dent.
- The brak ing ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not diffe rent from a two whee l dr ive vehi­
cle . Do not be tempted to accelerate to a
high spee d when t he road is slippe ry, be­
ca use this increases the risk of an accident.
- Note that on wet streets, the front wheels
can "hy droplane" if dr iving at speeds that
are too hig h. Unlike front whee l drive
vehicles, the eng ine does no t r ev highe r su d­
denly when the vehicle begins hydroplaning .
For this reason, pay attention to the road
condit ions regar dless of you r speed to re­
duce the r isk o f an accident.
Energy management
The starting ability is optimized
The energy management system manages the
electrical energy distribution and optimizes the
availability of electrical energy for starting the
engine.
When a ve hicle w ith a co nventional e nergy sys ­
tem is not driven for a long time, the battery is
138
dra ined by equipment (for examp le, the immobi l­
izer) . In certain circ umstances, there could may
not be enough ene rgy to sta rt the eng ine.
Yo ur vehicle is equipped wi th an inte lligen t ener ­
gy management system for dist ributing elec trici ­
ty. This significant ly improves the starting ability
and increases the batte ry life.
The ene rgy management sys tem Is m ade up of
batte ry diagnosis , standby current manage­
ment
and dynamic ene rgy management .
Battery diagnosis
The ba ttery diagnos is determines the batte ry
c ha rge level. The sensor s de ter mine the batte ry
vo ltage, the batte ry cu rrent, and the batte ry
tempera ture. The current cha rge level and the
perfo rmance of the battery a re determined base d
on this .
Idling current management
The idling cur rent m an age ment decreases the
energy used while parked . With the engine
switched off, it manages the energy distrib ution
to the different e lectr ica l components. Data from
the battery d iagnosis is taken into account for
th is.
Depend ing on the battery charge leve l, electrical
equipment is switched off one item after the oth ­
er, to prevent the battery from drain ing and to
maintain the sta rting ability.
Dynamic energy management
W hile driv ing, dynam ic energy man agement dis ­
tributes the appropr iate amo unt of energy to the
electrica l eq uipment. It contro ls t he battery
charge level so that mo re energy is not used then
i s be ing generated in order to maintain an opti­
mal battery c harge level.
(D Tips
- Energy management cannot overcome the
laws of physics. Note that the charge level
and length of the battery life are limited.
- When the sta rting ability is endangered, the
(•) indicator light t urns on¢
page 31 .