So my rear wiper just started running on its own today at start. I pulled every fuse in the car, four boxes worth in the engine room. Three by battery, one on drivers side. Pulled all fuses in the footwell by drivers parking break pedal. Rear wiper kept running. Finally i pulled the tailgate cover and unplugged the motor. From what i saw online, it looks like the wiper motor controller is controlled by the Controller Unit-Ipdm Engine Room module behind the battery.