RAM Commercial ProMaster 2024, Owner'S Manual, Page: 156 / 284

on continuously with the engine running, a malfunction
has been detected in the ESC system. If this light
remains on after several ignition cycles, and the vehicle
has been driven several miles (kilometers) at speeds
greater than 30 mph (48 km/h), see an authorized
dealer as soon as possible to have the problem diag-
nosed and corrected.
The ESC Activation/Malfunction Indicator Light starts to
flash as soon as the tires lose traction and the ESC sys-
tem becomes active. The ESC Activation/Malfunction
Indicator Light also flashes when TCS is active. If the
ESC Activation/Malfunction Indicator Light begins to
flash during acceleration, ease up on the accelerator
and apply as little throttle as possible. Be sure to adapt
your speed and driving to the prevailing road
conditions.
The ESC OFF Indicator Light indicates that
the Electronic Stability Control (ESC) is in a
reduced mode.
NOTE:
•
The ESC Activation/Malfunction Indicator Light and
the ESC OFF Indicator Light come on momentarily
each time the ignition switch is placed in the ON
position.
•
Each time the ignition is placed in the ON position,
the ESC system will be on even if it was turned off
previously.
•
The ESC system will make buzzing or clicking
sounds when it is active. This is normal; the sounds
will stop when ESC becomes inactive following the
maneuver that caused the ESC activation.
Hill Start Assist (HSA)
The HSA system is designed to assist the driver when
starting a vehicle from a stop on a hill. HSA will main-
tain the level of brake pressure the driver applied for a
short period of time after the driver takes their foot off
of the brake pedal. If the driver does not apply the
throttle during this short period of time, the system will
release brake pressure and the vehicle will roll down
the hill. The system will release brake pressure in pro-
portion to the amount of throttle applied as the vehicle
starts to move in the intended direction of travel.
HSA Activation Criteria
The following criteria must be met in order for HSA to
activate:
•
The vehicle must be stopped.
•
The vehicle must be on a 6% (approximate) grade or
greater hill.
•
Gear selection matches vehicle uphill direction (i.e.,
vehicle facing uphill is in forward gear; vehicle back-
ing uphill is in REVERSE gear).
HSA will work in REVERSE and all forward gears when
the activation criteria have been met. The system will
not activate if the vehicle is placed in NEUTRAL or
PARK.
WARNING!
There may be situations on minor hills with a loaded
vehicle, or while pulling a trailer, when the system will
not activate and slight rolling may occur. This could
cause a collision with another vehicle or object.
Always remember the driver is responsible for braking
the vehicle.
Towing With HSA
HSA will also provide assistance to mitigate roll back
while towing a trailer.
WARNING!
•
If you use a trailer brake controller with your trailer,
the trailer brakes may be activated and deacti-
vated with the brake switch. If so, there may not be
enough brake pressure to hold both the vehicle
and the trailer on a hill when the brake pedal is
released. In order to avoid rolling down an incline
while resuming acceleration, manually activate the
trailer brake or apply more vehicle brake pressure
prior to releasing the brake pedal.
•
HSA is not a parking brake. Always apply the park-
ing brake fully when exiting your vehicle. Also, be
certain to place the transmission in PARK.
•
Failure to follow these warnings can result in a col-
lision or serious personal injury.
Traction Control System (TCS)
TCS monitors the amount of wheel spin of each of the
driven wheels. If wheel spin is detected, brake pressure
is applied to the slipping wheel(s) and engine power is
reduced, to provide enhanced acceleration and stabil-
ity. A feature of the TCS, Brake Limited Differential
(BLD) functions similarly to a limited slip differential
and controls the wheel spin across a driven axle. If one
wheel on a driven axle is spinning faster than the other,
the system will apply the brake of the spinning wheel.
This will allow more engine torque to be applied to the
wheel that is not spinning. This feature remains active
even if the ESC is in the “Partial Off” mode.
154 SAFETY