Jeep Grand Cherokee 2015, Operating Information Manual

Page: 285 / 878

NOTE:
During severe braking conditions, a pulsing
sensation may occur and a clicking noise
will be heard. This is normal, indicating that
the ABS is functioning.
•
Do not “ride” the brakes by resting your foot
on the pedal. This could overheat the brakes
and result in unpredictable braking action,
longer stopping distances, or brake damage.
•
When descending mountains or hills, re-
peated braking can cause brake fade with
loss of braking control. Avoid repeated heavy
braking by downshifting the transmission or
locking out overdrive whenever possible.
•
Engines may idle at higher speeds during
warm-up, which could cause rear wheels to
spin and result in loss of vehicle control. Be
especially careful while driving on slippery
roads, in close-quarter maneuvering, park-
ing, or stopping.
•
Do not drive too fast for road conditions,
especially when roads are wet or slushy. A
wedge of water can build up between the tire
tread and the road. This hydroplaning action
can cause loss of traction, braking ability, and
control.
•
After going through deep water or a car
wash, brakes may become wet, resulting in
decreased performance and unpredictable
braking action. Dry the brakes by gentle,
intermittent pedal action while driving at very
slow speeds.
Traction Control System (TCS)
This system monitors the amount of wheel spin
of each of the driven wheels. If wheel spin is
detected, brake pressure is applied to the slip-
ping wheel(s) and engine power is reduced to
provide enhanced acceleration and stability. A
feature of the TCS system, Brake Limited Dif-
ferential (BLD), functions similar 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 TCS and ESC are in the “Partial
Off” mode or the “Full Off” mode. Refer to
“Electronic Stability Control (ESC)” in this sec-
tion for further information.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s
braking capability during emergency braking
maneuvers. The system detects an emergency
braking situation by sensing the rate and
amount of brake application and then applies
optimum pressure to the brakes. This can help
reduce braking distances. The BAS comple-
ments the anti-lock brake system (ABS). Apply-
ing the brakes very quickly results in the best
BAS assistance. To receive the benefit of the
system, you must apply continuous braking
pressure during the stopping sequence, (do not
“pump” the brakes). Do not reduce brake pedal
pressure unless braking is no longer desired.
Once the brake pedal is released, the BAS is
deactivated.
WARNING!
The Brake Assist System (BAS) cannot pre-
vent the natural laws of physics from acting
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