Strange Issue with Pioneer AVIC-D3


I have a Pioneer AVIC D-3 on my car that's about 3 years old. Lately it has done the following: if I turn the car on, but don't start the engine, the unit will start. If I start the engine it will shut down, and then the only way I can get it to turn on again is by turning the engine on and off while driving. Basically it seems like as soon as the voltage drops from starting the engine, the unit shuts off.
Any thoughts?






