Ram Trucks 2014 ProMaster Commercial - Owner Manual - Manual (Page 210)

CAUTION!
If the Brake Warning Light remains on with the
parking brake released, a brake system malfunction
is indicated. Have the brake system serviced by an
authorized dealer immediately.
BRAKE SYSTEM
In the event power assist is lost for any reason (for
example; repeated brake applications with the engine
off), the brakes will still function. The effort required to
brake the vehicle will be significantly more than that
required with the power system operating.
If either of the two hydraulic systems loses normal capabil-
ity, the remaining system will still function with some loss of
braking effectiveness. This will be evident by increased
pedal travel during application, greater pedal force required
to slow or stop, and activation of the Brake Warning Light
and the ABS Warning Light during brake use.
Four-Wheel Anti-Lock Brake System (ABS)
The Four-Wheel ABS is designed to aid the driver in
maintaining vehicle control under adverse braking con-
ditions. The system operates with a separate computer to
modulate hydraulic pressure, to prevent wheel lock-up
and to help avoid skidding on slippery surfaces.
The system’s pump motor runs during an ABS stop to
provide regulated hydraulic pressure. The pump motor
makes a low humming noise during operation, which is
normal.
The ABS includes an amber ABS Warning Light. When
the light is illuminated, the ABS is not functioning. The
system reverts to standard non-anti-lock brakes. Turning
the ignition Off and On again may reset the ABS if the
fault detected was only momentary.
208 STARTING AND OPERATING