STARTING AND OPERATING
121
Gravity Control Function
This function allows for a constant vehicle
speed to be maintained while traveling down
-
hill. Noise and vibrations coming from the
brakes when the system is activated are
normal. The system can only be activated at
speeds less than 15 mph (25 km/h). After
reaching the desired speed, release the accel
-
erator and brake pedals completely. If you want
to increase/decrease the speed, press the
accelerator/brake pedals again.
NOTE:
System intervention set-up can only be engaged
with "T" mode activated.
Activation:
With "T" mode on, rotate the selector
clockwise and hold in this position for half a
second, until the corresponding LED lights up
and Gravity Control functionality appears on the
display with a dedicated message.
Deactivation:
To deactivate the Gravity Control functionality
rotate the selector counterclockwise and hold in
this position for half a second. The LED corre
-
sponding to Gravity Control functionality will
shut off and the Gravity Control functionality
deactivation indication will appear on the
display.
NOTE:
To prevent engine stalling do not use the
system if the transmission is in NEUTRAL.
The system is available when the speed is
between 4 mph (7 km/h) and 15 mph
(25 km/h).
The Gravity Control system must be used with
a gear that is suitable for the set speed, in
order to prevent possible engine stalling. While
the Gravity Control system is operating it is also
possible to take control of the vehicle again by
pressing the brake or accelerator pedals. If the
Gravity Control is not available when system
intervention set-up is engaged, this could be
due to brake overheating. If this happens, wait
for a few minutes.
If the braking system overheats the system will
deactivate through a gradual release of the
braking pressure, leaving vehicle control to the
driver. Deactivation of the Gravity Control
system is accompanied by flashing of the
warning light, by a dedicated message in the
display and an acoustic warning. To reactivate
the system intervention set-up, wait for the
system to cool down and turn the selector
again.
If the speed exceeds 15 mph (25 km/h) and is
below 31 mph (50 km/h), the Gravity Control
system intervention set-up is deactivated but is
ready for being reactivated when the speed
drops back below 15 mph (25 km/h). The indi
-
cator in the instrument panel turns off and the
LED on the mode selector stays on. If vehicle
speed exceeds 31 mph (50 km/h), the Gravity
Control system completely deactivates. To
reactivate it, turn the selector when the speed
is again below 15 mph (25 km/h).
On level ground in urban areas it is advised to
deactivate the Gravity Control system interven
-
tion, since for speeds below 15 mph (25 km/h)
in certain conditions, such as when, shifting
gears or driving over bumps without using the
accelerator pedal, the system might activate.
5
20_BG_OM_EN_US_t.book Page 121
Summary of Contents for 500L 2020
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