198 Intelligent t e chn o log y
@ Tips
When insta lling a factory-supplied roof
rack system on the roof railing, the ESP
w ill adapt itself to a different center of
gravity.
Hill descent assist
The hill descent assist makes it possible to
drive down an incline at a const ant speed.
Fig. 19 9 Top of the cente r conso le: hill descen t assist
but ton
Fig. 20 0 Top of the center console: hill descent ass ist
butto n
.,. Press the ~ button in the center console
¢ fig. 199 or on the shift gate . The button
will illuminate .
.,. Press the button again to switch it off . The
diode in the button will go out.
Hill descent assist brakes all four wheels auto-
mat ically in order to lim it speed when driving
either forward or reverse on hills with a grade
up t o approximately 50%.
When the hill descent assist is on, the current
driving speed, when your vehicle entered the
incline is maint ained.
It is only possible t o
switch on the assist when driving slower t han
37 mph (60 km/h) . The assist works between
approximately 2 and 19 mph (4 and 30 km/
h). The driver can increase or decrease the ve-
hicle speed within these limits by depressing
the accelerator or brake pedal In addition, ve-
hicle st eerability is increased due to the brak-
ing distribution when driving in reverse.
There must be however suff icient ground ad-
hesion. The hill descent assist can
not do its
job if t he incline is icy or if the incline ground
is loose
c:> .&..
The system does not work at speeds between
19 and 37 mph (30 and 60 km/h). The system
in t hen in t he ready-mode . The diode in the
button will come on. The system automat ical-
ly switched off whe n you drive faster than 37
mph (60 km/h) . The diode w ill go out in this
case.
Active contro l at a specific speed up to approx-
imately 19 mph (30 km/h) will appear in the
instrument cluster display ¢
fig. 200 . Two
dashes" ··" wil l appear in the ready mode .
Hill descent assist is automatically activated
under the following conditions :
- the diode in t he but ton illuminates,
- vehicle speed is below approximately 19
mph (30 km/h)
- the incline is 10%.
_8 WARNING
-
- Always adapt your speed to the weather,
road and traffic conditions. Do not let
the increased safety provided tempt you
into taking risks.
- The hill descent assist system cannot
overcome the laws of physics. Your dr iv-
ing style must always be adapted to the
current road and traffic cond it ions.
- The hill descent assist may not be able to
hold your vehicle at a constant speed un-
der all conditions while driv ing on an in-
cline (for example if ground under the
vehicle is loose).
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