Radio persets after battery change
Not sure where to put this, but this looked like as good a place as any, mods move as you like.
Anyway, my baterry is now 7 yrs old and needed to be changed, so got the battery and changed it (have got to say it was the easiest battery I have ever changed, cleanest also). After changing the battery, naturally I need to see if it will start and I'm also expecting to have to reset all my radio presets, but when I turn my key on, all my presets are still there, they didn't all clear like I have seen with other batteries I have changed before. The only reset I had to perform was the "tire pressure" alarm setting.
Now I have my theories; small capacitor that holds a slight charge for a short period of time or there is a ROM chip in the unit that has memory. I might add that the radio/cd player is OEM, came with the car.