Adaptive cruise control Ill ____________ ____,___ __ ____.
App lies to ve hicles : with a daptiv e cr uise c ontro l
Vehicles that are difficult to detect
OJ
Fig .128 Two-wheeled
vehicle driving ahead
Vehicles that are difficult to detect, e.g . two-wheeled vehicles ahead,
vehicles with h igh ground clearance, protrud ing load, are frequently
detected late or not at all, under some circumstances .•
A ppli es to ve hicl es: with ad apti ve c rui se cont rol
Stationary vehicles
ij - .--......i:;1 ... _;1,,1
Contro ls a nd e quip
m en t
u
Fig. 129 Turning and
stationary ve hicle
Vehicle OP-eration
Fig. 130 Sheering out
and stationary vehicle
If a vehicle that has been detected by the ACC system turns off or
sheers out, and there is a stationary veh icle ahead of that vehicle, the
ACC system does not respond to the stationary vehicle=> fig. 129 and
=> fig. 130. •
Audi braking guard
Applies to ve hicles: w ith ada ptiv e cr uise con trol
Description
Audi braking guard warns you of a threatening collision
with a vehicle ahead .
N
I
Fig. 131 Display in
the in strum ent cluster ...
Vehicle care Do-it-yourselt service iTechnical data
Intelligent technology
--------------------------------------------------' "---.L==--
Repl acing wheel s/tires
Vehicles wi th all wheel drive must a lways have tires of t he same size.
Also avoid tires with different tread depths. For details see page
=> page 303, "New tires and rep lacing tires and wheels".
Off -Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road veh icle . It is therefore best to avo id ro ugh tracks and uneven
terrain as m uch as possible . Also refer to=>
page 247.
& WARNING
Alway s adju st your driving to road and traffi c conditi ons. Do not
let the ex tra safety afforded by all wheel dr ive tempt you into
taking extra risks.
• Although the all wheel dri ve is ve ry effecti ve, always
remember that braking capacity is limited by tire traction. You
should therefore not dri ve at ex cessive speeds on icy or slippery
road surfaces .
• On wet road surfaces , be careful not to drive too fast because
the front wheel s could begin to slide on top of the water (aqua
planing ). If th is should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
vehicle. Always drive at speeds which are suited to the road cond i
tions -ris k of crash.
n
Controls and equip
ment Safety first Vehicle operation
Energy management
Starting ability is optimized
E
nergy management contr ols th e distributi on of elec
tri cal energy and thus optimizes the availabili ty of elec
tri cal energ y for star ting the engin e.
If a vehicle with a conventiona l energy system is not dr iven for a long
per io d of time, t he battery is di sch arged by idling cur rent consume rs
(e .g. immob il izer) . In certain c ircumstances it can result in there
being insuffic ien t energy av a ilab le to start t he eng ine .
Inte lligent energy management in your ve hicle hand les the d istribu
tion of e lectrical energy . Starting ability is ma rkedly improved and
the l if e of the battery is extended.
Bas ically, energy management consists of
battery d iagnos is, idling
current management
a nd dynamic energy management .
Battery diagnosis
Battery d iagnosis con tinuously dete rmines the st ate o f the batte ry.
Sensors determ ine battery vo ltage, battery current and battery
t empe ra ture. This de termine s the cur rent sta te of cha rge and the
power of the battery.
Idling current management
I d ling current management reduces energy consumption wh ile the
vehicle is s tanding. W ith t he igni tion swi tched off, it con trols the
energy supply to the var io us electrical components. Data from
b att ery diag nosis is considered .
Depend ing on the battery 's state of charge, individual consumers a re
gradually t urned off to p revent excessive discha rge of the battery and
thus main tain start ing capab ility.
Dynamic energy management
Whi le the vehicle is being dr iven , dynamic energy management
dis tributes the energy generated a cco rding to the needs o f th e in di-
Vehicle care Do-it-yourself service Technical data
