Car Stereo Stores Why Wont My Car Stereo Store Anything?

Why wont my car stereo store anything? - car stereo stores

Ive got a Sony CDX-GT414U in my car, everything adapted to store the client's desires. I record the radio, equalizer, time, all these things, but if one comes back to the standard.
Sometimes when I'm out of the car 5 minutes on a bad back and still be saved, but only rarely.
Any1 can help?