ESP means Electronic Stability Program.
Resources @ http://www.caradvice.com.au/14153/2008-kia-sportage-review/
ESP monitors the vehicle's response to the driver's steering and
braking inputs to detect oversteer or understeer. If sensors detect
that a skidding condition is developing, ESP brakes individual front or
rear wheels and/or reduces excess power as needed to help keep the
vehicle going in the direction the driver is steering.
What does the ESP off switch do?
The switch disables ESP's capability to reduce the engine torque. It also reduces the ESP intervention threshold to about 20%.
How do I know ESP is working?
The triangle in the center of the speedometer flashes when ESP
intervenes; either with ESP switched on or off. It's a reminder to
adjust your speed to the prevailing road conditions, usually by
reducing it. If instead one "steps on it", with ESP ON, the engine
power may be reduced to prevent a potentially critical situation.
Electronic Stability Program (ESP®)
The standard-fitted ESP® system selectively applies braking forces to
the front and rear wheels in such a way as to reduce the risk of skids
and slides and help the driver maintain control in critical situations.
The system extends the technology of the anti-lock braking and
acceleration skid control systems with a range of additional sensors
which are used principally to detect yaw motion.
The ESP® computer continuously compares the actual behaviour of the
vehicle with the computed ideal values. The moment the car deviates
from the direction intended by the driver, specially developed control
logic causes the system to intervene with split-second speed to bring
the car back on track. It does this in two ways:
Precisely controlled braking at one or more wheels
Reducing engine power.
ESP® in this way helps to stabilise the vehicle in critical situations.
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