So I finally got around to trying to solve this issue. Called Crutchfield a couple of months ago. Rep said to reflash the iMaestro. Eh, don't feel like taking the dash apart today... Called again today, Rep 2, same response, reflash iMaestro. So tonight I took the dash apart and reflashed the iMaestro. Same result, fader settings do not save once car is turned off. Called Crutchfield, third rep almost immediately found a tech note stating it was a Pioneer issue and a firmware upgrade is needed. Unfortunately, Pioneer is not playing nice. I have the latest firmware for the AVH-4100NEX installed