The Haldex Electronic Control Unit (ECU) disengages the Haldex clutch in the centre coupling as soon as brakes are applied to allow ABS work properly. When performing tight low-speed turns (e.g. parking) the clutch is disengaged by Electronic Control Unit to avoid "wind-up" in transmission. When Electronic Stability Programs (ESP) are activated the Haldex is disengaged to allow the ESP system to effectively control the vehicle, this applies under acceleration and deceleration conditions.
