2015 AUDI S3 ground clearance

86 Audi adapti ve cruise control
Audi adaptive cruise
control
Introduction
Applies to vehicles: with Audi adaptive cruise co ntrol
The adaptive cruise control system is a combi­
nation of speed and distance regulation. It as­
sists the driver by both regulat ing the speed
and maintaining a distance to the object
ahead, within the abilit ies of the system. If
the system detects an object, adaptive cru ise
con trol can brake and acce le rate your veh icle.
This makes driving more comfortable both on
long stretches of highway and in stop-and -go
traffic.
General Information
General information
Applies to vehicles: with Audi adaptive cruise control and
Audi pre se nse front
Fi g. 75 Front of veh icle: sensor
The genera l information applies to adaptive
cruise control * and pre sense front *
c:;, page 94.
The radar sensor a rea c::> fig. 75 m ust not be
covered w ith stickers, deposits or a ny other
obstructions as it may impair the function of
the adaptive cruise control and the pre sense
front. For information on cleaning, refer to
c:;, page 205. The same applies for any modifi­
cations made in the front area.
The function of the adaptive cruise control
system and pre sense front is limited in some
conditions : -
Objects can on ly be detected when they are
within the sensor range
c::> page 87,
fig. 78.
-The system has a limited ability to detect
objects that are a short distance ahead, off
to the side of your vehicle or moving into
your lane.
- Objects that are difficult to detect such as
motorcycles, vehicles with high ground
clearance or an overhanging load are detect­
ed late or not detected at all.
- When driving through curves
c::>page 87.
-With stationary objects c::> page 87.
A WARNING
-
Always pay attent ion to traffic when adap­
tive cruise control is switched on and the
pre sense front is active
c::> page 94. As
the driver, yo u are still responsible for
start ing and for mainta ining speed and
d istance to other objects. The pre sense
front is used to ass ist you. The dr iver must
a lways take action to avo id a collision . The
driver is always responsible for braking at
the correct time.
- I ncorrect use of the adaptive cruise con­
trol can cause collisions, other accidents
and serio us personal injury.
- For safety reasons, do not use adaptive cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplaning). Us ing the system unde r
these conditions could result in a coll i­
sion .
- Switch adaptive cruise control off tempo­ rarily when driving in tu rni ng lanes, o n
expressway ex its or in construction
zones. This prevents the vehicle from ac­
celerating to the set speed when in these
situations .
- The adaptive c ruise control system will
not brake by itself if you put your foot on
the accelerator pedal. Doing so can over-
ride the speed and distance reg ulation . ..,_

194 Smart Technology
Winter tires By using all wheel drive, your vehicle has good
forward motion with standard tires in winter
cond itions. However, in winter we recommend
using winter or all season tires on
all four
wheels, because this will improve the braking
effect .
Snow chains
If there are snow chain laws, snow chains
must also be used on vehicles with all whee l
drive ¢
page 262, Snow chains .
Replacing tires
Fo r vehicles w ith all whee l dr ive , only wheels
with the same rolling circumference should be
used . Avoid whee ls with different tread
depths ¢
page 254.
Offroad vehicle?
Your Aud i is not an offroad vehicle -there is
not enough ground clearance. For this reason,
avoid difficult terrain. Refer to¢
page 287.
&_ WARNING
- Also, in vehicles with all whee l dr ive,
adapt yo ur driving style to the current
road and traffic conditions. Do not let
the increased safety provided tempt you
into taking risks.
- The braking ability of your vehicle is lim­
ited to the traction of the wheels . In this
way, it is not different from a two wheel
dr ive vehicle. Do not be tempted to ac­
celerate to a high speed when the road is
slippery this increases the risk of an acci­
dent .
- Note that on wet streets, the front
wheels can "hydroplane" if driving at
speeds that are too high. Unlike front
wheel drive vehicles, the engine does not
rev higher suddenly when the vehicle be­
gins hydroplan ing. For this reason, pay
attention to the road conditions regard­
less of your speed.
Energy management
The starting ability is optimized
The energy management system manages
the electrical energy distribution and optimiz ­
es the availability of electrical energy for
starting the engine.
When a vehicle with a conventional energy
system is not driven for a long time , the bat­
tery is drained by equ ipment (for example the
immobilizer). In certain circumstances, there
could may not be enough energy to start the
engine .
Your vehicle is equipped with an intel ligent
energy management system for d istr ibut ing
electricity. This s ignificantly improves the
sta rting ability and increases the battery life.
The energy management sy stem Is made up
of
battery diagnosis , idling current manage·
ment
and dynamic energy management .
Battery diagnosis
The battery d iagnosis determ ines the battery
charge leve l. The sensors determine the bat­
tery voltage, the battery current, and the bat­
tery temperature. The curren t cha rge leve l
and the performance of the battery are deter­
mined based on this.
Idling current management
The idling current management decreases the
energy used wh ile parked. With the engine
switched off, it manages the energy distribu­
tion to the different elect rical componen ts.
Date from battery diagnosis is taken into ac­
count for this.
Depending on the battery charge level, elec­
trical equip ment is switched off one item after
the o ther, to prevent the battery from drain­
ing and to retain the starting ability.
Dynamic energy management
While driving, dynamic energy management
distributes the appropriate amount of energy
to the e lectr ica l equipment.
It controls the
battery charge level so that more energy is ..,.