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 slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system 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. Refer to “Electronic Stability Con-
trol (ESC)” in this section for further information.
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 maintain the
level of brake pressure the driver applied for a short period
of time after the driver takes his foot off 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 proportion 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:
•Vehicle must be stopped.
•Vehicle must be on a 2.5% (manual transmission) or 7%
grade or greater (automatic transmission) hill.
•Gear selection matches vehicle uphill direction (i.e., ve-
hicle in NEUTRAL (manual transmission), vehicle facing
uphill is in forward gear; vehicle backing uphill is in
REVERSE gear).
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