Question about Pioneer DEH-P4100

Malfunction I have had this model for the past couple of years, and I am now having some serious problems. It now plays only CD at 30 notches of blasting volume! And I can't change it all. It is completely locked up. I appreciate all the help you can give me. thanks. It is a pioneer DEH-P4100

alisha9544 May 28, 2008

I have the exact problem. 30notches of blasting CD music. I can't find a reset button. Did disconnecting the battery work as a reset?
osubeaver Aug 28, 2008

I now have this same problem. Did anyone find this reset button. I couldn't locate it. Did it help to disconnect the battery?

1 Answer

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363 Answers

Check none of the buttons are stuck in. Try pressing the reset button. I think it is bottom right and recessed in a hole. The unit should be on and you'll need something pointy like a pen or toothpick. If you cant find the reset button, disconnect the car battery for a minute or two. If that doen't work, then it will probably need repair.

Posted on Sep 21, 2007

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