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    wdowns's Avatar
    wdowns is offline Junior Member



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    head unit loses power and regains intermittently

    Long post looking for help
    Kenwood head unit installed in 2011. No issues until about 6 months ago.

    Typical Day:
    Start engine first thing in morning - head unit is powered on and functioning normally

    Between 1 - 10 minutes into drive - head unit shuts off. no power. can't turn back on with power button.

    Sometimes between 5-10 minutes of no power - unit turns back on, functions normally again. Shuts back off after 1-5 minutes again. does not come back on for remainder of day.

    If I pull the 10amp fuse out from the car fuse block and put it back in (same fuse obviously, it is not a blown fuse), radio will turn on. Will shut down within 10minutes again.

    Yesterday (6/18/2017) I replaced the head unit with a new one. problem did not go away. It initially powered on and functioned normal, but lost power about 5 minutes in.

    made a video of the following (with new head unit installed):
    car in park in my driveway:
    turn engine on as normal, radio does not come on. pull radio fuse with engine running and replace. radio turns on; functions normally and sounds good. power radio off/on with power button on head unit; still working good. shut engine off, pull key out of ignition - radio shut down as it should have. put key back in and start car - no power to radio.

    I did this same troubleshooting with both head units - I don't think it has anything to do with the radio itself (anymore).

    Another note - With engine off and key out of ignition; if I pull the 10amp fuse and replace, the radio will come on. When this happens, the radio does not shut off, even with the doors open. I've seen this a couple times also when turning the engine off. If I notice it when leaving my car, I usually unplug the faceplate.

    more info during troubleshooting:
    while driving, when head unit is off, I sometimes hear an electronic sounding squeal for about 2 seconds, then I see the head unit power back on.

    When I had the old head unit disconnected, I heard pulsing squeal from speakers, almost like a security system?? lasted for about 90 seconds and then went away. No radio was hooked up. (If I have a security system, I don't know about it. I do have OnStar but I've never used it.)

    "service air bag" light sometimes comes on/off. usually doesn't stay on for more than 5 minutes. Maybe 4 or 5 times in past 6 months, I have also lost all dash indications (fuel level, tach, sped, and coolant temp) while driving for a couple seconds and then they came back.

    Assuming the radio problems are related to the other problems; can't say for sure.

    Can anyone offer some advice??

    Thank you
    Will







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    BOOMINGRANDPA's Avatar
    BOOMINGRANDPA is offline YEAH I'M A CHEAP BAST*RD



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    Re: head unit loses power and regains intermittently

    u either have a wire touching metal somewhere or just loose.. but i think the remote turn on to hu isn't tight or something., thats probably yellow wire that may be stuck in fuse box., tighten that fuse/wire..



    KENWOOD X301 HU , PRECISION POWER Phantom 1000, FU 750 12 (prefab until box is built) , soundqubed 6.5" coax, xover (hu) AGM starting batt. https://www.youtube.com/watch?v=rTcgVGvuFX8 https://www.youtube.com/watch?v=WI4yGDqN27g

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