Question about JVC KD-HDR1 CD Player

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JVC drains battery when OFF, puzzling

I had my JVC professionally installed. Several times if I left my car sitting for a few days it wouldnt start, dead battery. I pulled the fuse that supplies only the radio (now the JVC) problem solved. Figured it was a bad JVC head unit and got a replacement under warranty. SAME PROBLEM. Unit plays fine but will drin car battery if left for a few days (3) shut OFF. Car battery is very strong, only a few months old. Can sit for a long time with zero trouble if I pull the power fuse to the JVC.

Is there some installation error which could produce this battery drain when the unit is OFF? Hard to believe I got two new head units with identical issues unless it is a design flaw and if it was there would be stuff on the net about it and I dont see any.

Any answers or clues greatly welcomed.


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    377 Jan 12, 2009

    Thanks. Goiod suggestion. Will try removing the head unit and leaving the fuse in. Will post results in about a week or so.


  • kornycat Feb 14, 2009

    hello; i have exactly the same problem with my Ford Explorer and the JVC stereo different model; cd/satellite radio/usb/mp3 player. There is something in the unit draining my battery(battery brand new, replaced 2x). I had mechanics go over my truck with a fine tooth comb and conclusion is there is something wrong with the actual unit that seems to come on after it is turned off/in sleeping mode; jumps up to drain battery excessively. It is not the wiring to the unit that has been checked. Seems to just be this particular unit. This has taken over 2 years to have this figured out; back and forth to mechanic with various possible answers; battery; left interiour light on, left glove box open, alarm was tripped while parked, alternator problem!!! NONE of that at all!! Its the stereo that is the problem; so now what is wrong with these jvc units? mine was pretty expensive when I had it put in; professionally installed!!! thanks Anyone have any answers? I am ready to garbage the unit!!

  • sandor70 Apr 28, 2009

    I have a same problem, but my stereo isn't jvc. I found that it has two power intake. One from after ignition switch and the other from straight power for memory. As soon as I disconnected the permanent power the battery was starting the car no problem. But my car stereo needs that permanent power so what is the solution??? (sorry for my English)

  • highkey May 26, 2009

    I have the exact same problem with a cheap aftermarket stereo I installed in my daughter's Proton Satria 2001. I note doin12volt's answer as follows:

    "this HAS to be a problem with the head unit if the fuse ONLY goes to
    the head unit. Try this... Remove the head unit from the dash and
    un-plug it, but leave ALL the fuses in - If it STILL drains the batt,
    this is a problem with the circuit that the jvc is on, even though you
    think the fuse ONLY powered the stereo, it may go to something else
    causing the draw..."

    The power circuit that powers the radio also powers the clock, but it wasn't happening before I installed the head unit. So I suppose that means it must be the unit(???) If so, how can I tell that the next one I buy won't do the same thing?? My daughter is being very patient, but the problem itself is driving me insane.


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The problem is actually the wiring. Check the installation manual, I guarantee the "pro" installer took a shortcut.

There are two power wires (yellow & red +) and a ground wire (black -).
Now, black goes to chassis grounding point. Easy.

Yellow goes to a live terminal in the fuse block for constant 12V.
This retains the settings and clock etc.

Red goes to an ACCESSORY terminal in the fuse block (so key must be turned to at least ACC to allow it to be switched on).

But in the case of my car, the idiot who installed it ran the red wire directly to the + battery terminal. That's wrong, and will drain the battery.

Google for an installation manual, I'm certain your JVC head units will be the same procedure.

Posted on Mar 03, 2013

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This HAS to be a problem with the head unit if the fuse ONLY goes to the head unit. Try this... Remove the head unit from the dash and un-plug it, but leave ALL the fuses in - If it STILL drains the batt, this is a problem with the circuit that the jvc is on, even though you think the fuse ONLY powered the stereo, it may go to something else causing the draw... I have seen MANY MANY cars that will list 1 fuse for the stereo memory, but if you trace the wiring you will find that circuit also may power cigarette lighter sockets, clocks, and many other "hidden" draws.

Posted on Jan 12, 2009

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