Security

"Protect" isn't for security on a Kenwood; it's caused by a problem with the speaker output. There may be a defect in the CD player, or you may have a blown speaker or a shorted speaker wire in the vehicle. Try disconnecting all the speakers and see if the unit still shows "protect" when you turn it on. If it still shows the "protect" message with no speakers connected, the unit needs to be serviced; if not, re-connect the speakers one at a time until you find out which one is causing the problem.

I had "protect" flashing on my kenwood KDC-MP232 also. I fixed the speaker wire problem but I couldn't get the "protect" message to reset. I had to remove the unit from the dash and unplug the power supply. I plug it right back in and it was back to normal.