RAM Commercial ProMaster 2024, Руководство пользователя, Страница: 155 / 284

Electronic Stability Control (ESC)
ESC enhances directional control and stability of the
vehicle under various driving conditions. ESC corrects
for over/under steering of the vehicle by applying the
brake of the appropriate wheel(s) to counteract the pre-
vious conditions listed. Engine power may also be
reduced to help the vehicle maintain the desired path.
•
Oversteer – when the vehicle is turning more than
appropriate for the steering wheel position.
•
Understeer – when the vehicle is turning less than
appropriate for the steering wheel position.
ESC uses sensors in the vehicle to determine the
vehicle path intended by the driver and compares it to
the actual path of the vehicle. When the actual path
does not match the intended path, ESC applies the
brake of the appropriate wheel to assist in counteract-
ing the oversteer or understeer condition.
WARNING!
•
Electronic Stability Control (ESC) cannot prevent
the natural laws of physics from acting on the
vehicle, nor can it increase the traction afforded by
prevailing road conditions. ESC cannot prevent
accidents, including those resulting from excessive
speed in turns, driving on very slippery surfaces, or
hydroplaning. ESC also cannot prevent accidents
resulting from loss of vehicle control due to inap-
propriate driver input for the conditions. Only a
safe, attentive, and skillful driver can prevent acci-
dents. The capabilities of an ESC equipped vehicle
must never be exploited in a reckless or dangerous
manner which could jeopardize the user’s safety or
the safety of others.
(Continued)
WARNING!
•
Vehicle modifications, or failure to properly main-
tain your vehicle, may change the handling charac-
teristics of your vehicle, and may negatively affect
the performance of the ESC system. Changes to
the steering system, suspension, braking system,
tire type and size or wheel size may adversely
affect ESC performance. Improperly inflated and
unevenly worn tires may also degrade ESC perfor-
mance. Any vehicle modification or poor vehicle
maintenance that reduces the effectiveness of the
ESC system can increase the risk of loss of vehicle
control, vehicle rollover, personal injury and death.
ESC Operating Modes
The ESC OFF button is located in the center
switch bank, next to the hazard flasher
switch.
ESC On
This mode is the normal operating mode for ESC
equipped vehicles. Whenever the vehicle is started, the
ESC system will be in this mode. This mode should be
used for most driving situations. ESC should only be
turned off for the following specific reasons.
ESC Partial Off
This mode is entered by momentarily pushing the ESC
OFF button.
When in the “Partial Off” mode, the TCS portion of ESC,
except for the “limited slip” feature described in the
TCS section, has been disabled and the ESC OFF Indi-
cator Light will be illuminated. When in the “Partial Off”
mode, ESC will operate without engine torque manage-
ment. This mode is intended to be used if the vehicle is
in deep snow, sand or gravel conditions and more
wheel spin than ESC would normally allow is required to
gain traction. To turn ESC on again, momentarily push
the ESC OFF button. This will restore the normal “ESC
On” mode of operation.
WARNING!
•
When in “Partial Off” mode, the TCS functionality
of ESC, except for the limited slip feature described
in the TCS section, has been disabled and the ESC
OFF Indicator Light will be illuminated. When in
“Partial Off” mode, the engine power reduction
feature of TCS is disabled, and the enhanced
vehicle stability offered by the ESC system is
reduced.
•
Trailer Sway Control (TSC) is disabled when the
ESC system is in the “Partial Off” mode.
NOTE:
To improve the vehicle's traction when driving with snow
chains, or starting off in deep snow, sand or gravel, it
may be desirable to switch to the “Partial Off” mode by
pushing the ESC OFF button. Once the situation requir-
ing ESC to be switched to the “Partial Off” mode is over-
come, turn ESC back on by momentarily pushing the
ESC OFF button. This may be done while the vehicle is
in motion.
ESC Activation/Malfunction Indicator
Light And ESC OFF Indicator Light
The ESC Activation/Malfunction Indicator
Light in the instrument cluster will come on
when the ignition is turned to the ON mode.
It should go out with the engine running. If
the ESC Activation/Malfunction Indicator Light comes
SAFETY 153
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