Another first: 2001 Caravan's new finely tuned obstacle detection system on the available power sliding doors and liftgate. When sensitive sensors detect obstructions, the power sliding door and/or liftgate reverses direction-notably, in both opening and closing directions of travel. And for maximum convenience, you can open and close the available power sliding doors and power rear liftgate, as well as locking and unlocking all doors using our new sophisticated key fob Remote Keyless Entry System.