SsangYong Korando III (2010 year). Service manual — part 554

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5) ARP (Active Roll-Over Protection)

The ARP (Active Roll-over Protection) system is a safety assistant device that minimizes, by controlling

brakes and the engine, the physical tendency of the vehicle rollover during sharp lane changes or U-

turns. For the system, software is added to the existing ESP system and no additional device or switch is

needed. One must note that the ARP system, just as general assistant devices including the ABS, is only

a safety assistant device using the ESP system and its function is useless when the situation overcomes

the physical power. Following picture shows how the ARP compensates the vehicle position by varying

each wheel's braking power to overcome the physical tendency of the vehicle rollover during sharp turns.

Lateral sensor

(In sensor cluster)

Vehicle speed

Brake force

Radius

The vehicle driving condition is controlled by the internally programmed logic according to the input

signals from wheel speed sensor, steering angle sensor and lateral sensor.

During the ARP operation, vehicle safety (rollover prevention) takes the first priority and thus,

stronger engine control is in effect. Consequently, the vehicle speed decreases rapidly, so the driver

must take caution for the vehicle may drift away from the lane.

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6) HSA (Hill Start Assist)

The HSA (Hill Start Assist) prevents the vehicle from rolling backward by supplying the hydraulic

pressure to the wheels by the HECU after the brake pedal is released when starting off on uphill.

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7) Emergency Hazard Flasher Control (Coupled with ABS)

(1) System layout

(2) Emergency stop signal function

When ABS system is operating (or sudden braking), the hazard warning flashers will blink for 10

seconds to inform the emergency situation to the vehicles behind.

(3) Operating process

When receiving the emergency stop signal through PCAN communication it blinks with the interval of 4

Hz and when receiving the emergency stop OFF signal through PCAN communication it blinks with the

interval of 1.25 Hz, normal operating speed.

However, the manual operation of the switch has a priority over this function.

Priority: Manual operation＞Emergency stop signal＞Emergency hazard flasher＞Auto hazard

flasher

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The BCM flashes the emergency auto hazard flasher with interval of 1.25 times/sec.:

The emergency hazard flasher does not operate if the vehicle speed is over 50 km/h when the

emergency stop signal is received.

The emergency hazard flasher operates if the vehicle speed is 50 km/h or lower when the

emergency stop signal is received.

When vehicle speed increases more than 10 km/h above the speed when the signal is received

during operation by emergency braking signal, the emergency hazard flasher stops operation.

When turning emergency hazard flasher switch OFF during operation by emergency braking signal,

it stops operation.

It is deactivated automatically 10 seconds after if items 2) and 3) above are not met during operation

by emergency braking signal.

If multi-function automatic hazard flasher signal is received during operation by emergency braking

signal, it will be overridden.

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