204 Intelligent technology
The correct fluid leve l in the reservoi r is
important for proper functioning of the
power steer ing.
Driving with your
quattro
With All Wheel Drive, all four wheels are driv-
en.
General information
With All Wheel Drive, power is distributed to
all four wheels . This happens automatically
depending on your dr iving style and the road
conditions at the t ime . See a lso
c::;,page 199.
With the sport differential*, power d istribu-
tion to the rear wheels is var iable and can be
adju sted with Audi drive select*
c::;,page 110.
Always read and fo llow safety precautions
¢ &, .
Winter tires
When driv ing in the winter, your vehicle with
All Wheel Drive has an advantage, even with
regular tires. 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 c:;, page 263, Winter tires.
Snow chains
Where snow chains are mandatory on certain
roads, this normally a lso applies to vehicles
with All Wheel Drive
¢ page 264, Snow
chains.
Replacing wheels/tires
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 2 59, 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::;,page209.
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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