How does a Haldex clutch work?

A Haldex clutch is an electronically controlled multi-plate clutch system used in all-wheel-drive vehicles. It operates by engaging and disengaging the rear axle based on the front axle's traction and the driving conditions detected by sensors. When the front wheels slip, the system activates the clutch, allowing torque to be transferred to the rear wheels to improve traction and stability. This engagement is typically seamless and can respond quickly to changing road conditions.