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General information
Appl ies to: ve hicles with Audi adaptive cruise contro l an d Audi
p re se nse front
Fig. 88 Front of vehicle: sensor
The general information applies to adaptive
cruise control* and pre sense front*
i::;, page 97.
The radar sensor area
i::!:> fig. 88 must not be cov
ered with stickers, deposits or any other obstruc
tions as it may impair the function of the adap
tive cruise control and the pre sense front. For in
formation on cleaning, refer to
c> page 224. The
same applies for any modifications made in the
front area .
The function of the adaptive cruise control sys
tem and pre sense front is limited in some condi
tions :
- Objects can only be detected when they are
within the sensor range ¢
page 90, fig. 87.
-The system has a limited ability to detect ob
jects 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 mo
torcycles, vehicles with high ground clearance
or an overhanging load are detected late or not detected at all.
- When driving through curves'=>
page 92.
- With stationary objects ¢
page 92.
A WARNING
Always pay attention to traffic when adaptive
cruise control is switched on and the pre
sense front is active
'=> page 9 7. As the driv
er, you are still responsible for starting and
for maintaining speed and distance to other objects. The pre sense front is used to assist
you. The driver must always take action to
Assist
avoid a collision. The driver is always responsi
ble for braking at the correct time.
- Using adaptive cruise control incorrectly can
cause collisions, other accidents and serious
injuries.
- 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 hydroplan
ing). Using the system under these condi
tions could result in a collision.
- Switch adaptive cruise control off tempora
rily when driving in turning lanes, on ex
pressway exits or in construction zones. This
prevents the vehicle from accelerating to
the set speed when in these situations.
- The adaptive cruise control system will not
brake by itself if you put your foot on the ac
celerator pedal. Doing so can override the
speed and distance regulation.
- When approaching stationary objects such
as stopped traffic, adaptive cruise control
will not respond and pre sense front will
have limited function.
- The adaptive cruise control system and pre
sense front do not react to people, animals,
objects crossing the road or oncoming ob
jects.
- The function of the radar sensors can be af
fected by reflective objects such as guard
rails, the entrance to a tunnel, heavy rain or
ice.
- Always maintain enough distance from
vehicles ahead so that you can still brake
your vehicle safely . The adaptive cruise con
trol cannot safely slow your vehicle or brake it to a stop if you are driving too close be
hind a vehicle. Please note that the auto
matic braking function cannot brake sud
denly or apply the brakes fully under these
conditions.
- To reduce the risk of unintended actions,
switch the ACC off when you a re not actively
using it.
~
91
Intelligent Technology
Do not tow your veh icle bec ause it cannot be
steered. See an authorized Audi dealer or author
ized Audi Service Fac ility for assistance .
,IM Steering: Sy stem fault You can continu e
dri ving
If the indi cator lig ht t urns on , the steering whee l
may be mo re diff icu lt to move o r more sensitive
than usual. The steering wheel may also be a t an
angle when dr iving straight.
D rive s low ly to an authorized A udi dealer or au
thor ized A udi Se rvice Fa cility to have the m al
f u nction co rrected.
m Steering lock: sy stem fault! Please contact
Servic e
There is a malfunction in the electronic steering
lock.
Drive to an a uthori zed Aud i dea ler or authori zed
Aud i Serv ice Facility immedia tely to have the
malfunct io n corrected .
A WARNING
Have the system malfunction corrected as
soon as poss ible by an author ized Audi dealer
or au thori zed Aud i Serv ice Fa cili ty, as this in
c re ases the risk of an accident.
{D Tips
If the . or ,:rM i ndica to r light only turns on
for a short time, you may continue dr iv ing.
All wheel drive (quattro)
Applies to: veh icles with all whee l drive
In all wheel drive, all four wheels are powered .
General information
In all wheel drive, the driving power is divided be
tween all four wheels. This happens automatical
ly depe nding on your driving behavior as well as
the c urrent road cond itions . Also see
s>
page 116, Electronic stabilization control
( ES C).
The all wheel drive concept is designed for high
engine power . Your ve hicle is exceptionally pow
erful and has ex cellent driving characterist ics
120
both under normal d riving conditions and on
snow and ice . A lways read and follow safety pre
ca utions s>
.&..
Winter tires
By using all wheel dr ive, your veh icle has good
forward motion w it h standard t ires in win ter con
ditions . However, in winter we recommend using
winter or all season tires on
oil four whee ls, be
ca use this will improve the
broking effect.
Snow chains
I f there are snow ch ain laws , snow ch ains m ust
a lso be used on veh icles with all wheel drive
s>
page 219 , Snow chains .
Replacing tires
For vehicles with a ll w heel drive, o nly wheels with
t h e same ro lli ng ci rcumfe rence sho uld be used.
Avo id whee ls with diffe rent t read depths
¢ page 211 .
Offroad vehicle?
You r Audi is no t an off road vehicle - there is not
enough ground clearance. For th is reaso n, avoid
difficul t ter rain . Also see s>
page 251.
A WARNING
-Also, in veh icles with all wheel drive, ad apt
your d riving sty le to the cu rren t road and
traffic conditions. Do not let the increased
safety provi ded tempt you into taking r is k s,
because this inc reases the risk of an acc i
dent.
- The braking abi lity of your vehicle is limited
to the traction of the whee ls. I n this way, it
is not different from a two w heel drive vehi
cle . Do not be tempted to accelerate to a
hig h speed when the road is slippery, be
cause t his i ncreases the r is k of an accident .
- Note that on wet s treets, the front wheels
can " hydrop la ne" if dr iv ing at spee ds that
are too high. Unlike front w heel d rive
veh icles, t he engine does no t rev h ig her sud
de nly when t he vehi cle begins hydrop lan ing.
F or this reason, pay atte ntion to the road
conditions rega rdless of your speed to re
duce t he risk of an accident .