M N
0 ...J
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Hill descent c ontrol
The hill descent control is sw itched on in off
road mode. When slowly descending steep
gradients on loose ground or when the axles
are articulated, hi ll descent control provides
assistance by automatically applying the
brakes to keep vehicle speed constant. The ve
h icle is also rendered easier to steer by selec
tive distribution of braking force . Hill descent
control intervenes when:
- the accelerator pedal is not pressed,
- the vehicle is travelling less than 12 mph
(20 km/h),
- a steep gradient is detected,
- wheel behavior indicates loose ground or
conditions with poor adhesion (e .g. also ax le
articulation) .
H ill descent control operates both dr iv ing for
ward and in reverse. Active hill descent con
trol is deactivated by pressing the acce lerator
pedal until the conditions for act ivation al
ready listed are met again.
A WARNING
You should only switch offroad mode on if
your dr iving abilities and road conditions
permit .
- The stabilization function is limited
when offroad mode is switched on. The
dr iv ing wheels could spin and the vehicle
cou ld swe rve, especia lly on slick or slip
pery road surfaces.
- You should on ly sw itch offroad mode on
when d riving offroad .
(D Tips
Offroad mode cannot be switched on when
adaptive cru ise control* is sw itched on.
Brake system
Operating condit ions and d riving hab it s
The brakes on today's automob iles are st ill
subject to wear, depending largely on operat
i ng conditions and dr iv ing habits ~& . On
vehicles that are e ither driven mostly in stop-
Int ellig ent technolog y 225
and-go city t raff ic or are driven hard, the
brake pads should be checked by your author
ized Audi dea ler more often than specif ied in
the
Warranty & Mainten ance boo klet . Failure
to have your brake pads inspected can result
in reduced brake performance.
On steep slopes, you sho uld use the braking
effect of the engine . This way, you prevent un
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down cont inuously . Pump the brakes at inter
vals.
Noises may occur when braking depending on
the speed, braking force and outside condi
t ions such as temperature and humid ity .
Mo is ture or ro ad s alt
Under certa in conditions, for example, when
driv ing through water or very heavy ra in, or
even after washing your veh icle, the braking
effect can be reduced due to moisture (or in
freez ing cond itions ice) on the brake pads . A
few carefu l brake applications should dry off
the b rake pads or remove any ice coatings.
When you are drivi ng at higher speeds with
the windshield w ipers on, the brake pads wi ll
briefly touch the brake discs in regu la r i nter
vals so as to improve react ion time when brak
ing on wet sur faces. You, the drive r, wi ll no t
notice anything .
T he effect iveness of the brakes can be reduced
whe n the vehicle is d riven on a sa lt-cove red
road and the b ra kes are not used. He re too,
you should clean off accumulated sa lt coa ting
from brake discs and pads with a few caref ul
applications of the brake~& .
Corrosion
The re may be a tendency for di rt to b uild up
o n the br ake pads and corros io n to fo rm on
the d iscs i f the car is not driven regularly or
o nly for short trips with litt le use of the
brakes.
If t he brakes a re not used frequently, o r if cor
ros ion has formed on the discs, it is adv isable
to clean off the pads and d iscs by braking .,.
•
•
