2001 A4 2.8 quattro, 150k mileage

Three problems started occuring at the same time a couple days ago. When my car is parked and off, the hazard lights will turn themselves on, if I shut them off, they will turn themselves back on randomly. When I am driving, the windows randomly roll themselves down. If I roll them up, they roll themselves down again. Also, my car will not lock with the remote. If I try to lock it by turning the key in the door, the alarm does not activate. Any help or suggestions would be much appreciated.