202 Intelligent technology
Driving with your
quattro
With All Wheel Drive, all four wheels are driv-
en .
General inform ation
With All Wheel Drive, power is distributed to
all four wheels . This happens automatically
depending on your driving style and the road
conditions at the time . See also
c:;;page 197.
With the spo rt differential*, power d istribu-
tion to the rear wheels is variable and can be
adjusted with Audi d rive select*
c:;;page 108.
Always read and fo llow safety precautions
¢ .&,.
Winter tires
When driving in the winter , your vehicle with
All Wheel Drive has an advantage, even with
regular t ires. In winter road conditions it may
be advisable to mount winter tires (or all-sea-
son tires) for improved driveability and brak-
ing: these tires must be mounted on
all four
wheels.
See also ¢ page 260, Winter tires.
Snow chains
Where snow chains are mandatory on certa in
roads, this normally a lso applies to vehicles
with All Wheel Drive
c:;, page 261, Snow
chains .
Replacing wheels/t ires
Vehicles with All Wheel Drive must always
have tires of the same size. Also avoid ti res
with different tread depths. For details see
page
c:;, page 256, New tires and replacing
tires and wheels .
Off-Road driving?
Your Aud i does not have enough ground clear-
ance to be used as an off-road vehicle. It is
therefore best to avoid rough tracks and un -
even terrain as much as possible. Also refer to
c:;;page207.
A WARNING
Always adjust your driving to road and traf-
f ic conditions. Do not let the extra safety
afforded by All Wheel Drive tempt you into
taking extra risks .
- Although the All Wheel Drive is very ef-
fective, always remember that braking
capacity is lim ited by tire traction. You
should therefore not drive at excessive
speeds on icy or slippery road surfaces.
- On wet road surfaces, be careful not to
drive too fast because the front wheels
could begin to slide on top of the water
(aquaplaning) . If this should occur, you
will have no warning from a sudden in-
crease in eng ine speed as with a front-
wheel drive vehicle. Always drive at
speeds which are suited to the road con-
ditions - risk of crash .
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting
the engine .
If a vehicle with a conventiona l ene rgy system
is not driven for a long period of time, the bat-
tery is discharged by idling current consumers
(e.g. immobilizer). In certain circumstances it
can resu lt in there being insufficient energy
available to start the engine .
Intelligent energy management in your vehi-
cle handles the distribution of e lectrica l ener-
gy. Starting ability is markedly improved and
the life of the battery is extended.
Basically, energy management consists of
battery diagnosis, idling current manage-
ment
and dynamic energy management.
Battery diagnosis
Battery diagnosis continuously determines
the state of the battery. Sensors determine
battery voltage, battery current and battery ..,.
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