Peugeot 307 automatic wiper and headlight operation

Hello, my car is a Peugeot 307 2007 1.6 hdi designtech model. When my car is parked, it occasionally turns on the wipers by itself and recently it has started to turn on the headlights as well. There is no problem while driving, it only happens when parked. I disconnect the terminal when I park to prevent the battery from draining. Does anyone know what is causing it?