Question about Kenwood KNA-DV4100 GPS Receiver

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KNA-DV4100 goes nutz

I own a KNA-DV4100 and its been connected to the KVT-815DVD for over two years and no problems. Until last Friday 10/6/06 the navigation went crazy. All of a sudden the gps could not keep track of the current position, or if I was stopped at an intersection the screen marker keeps on going off into the wild direction, and while using a simple destination it does not reroute fast enough more than 30 seconds, or the screen marker gets to the intersection before the car does. I have checked the diagnostic screen menu # 014220, gps says its tracking 7 to 8 satellites, and vehicle info is transmitting speed sensor info Kph, mpk, and look within range from the speedometer to readings coming from the unit. I have tried reset a couple of times now since last Friday and tracking navigation is unreliable at best in Clear sky?s Please Help, I rely on the navigation to be accurate. I just purchased the updated DVD but I haven?t received it yet. But what would cause it to go so wildly out of control? Something going on with the GPS satellites? Please advice

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  • Patrick Phillips Oct 12, 2006

    hello Gary thanks for the info , is there any way to reset the processor unit back to default. And I don't believe that the KNA-dv4100 has a battery to be pulled out, it may have an internal one for location presets? but even that will be deleted if you unplug the battery of the car for a week or two. Yo mention in your response that you plug it in I assume the DVD, turn on the radio/unit then unplug with the power button on the radio/main control ? or the ignition switch ? please clarify the steps to properly update this unit.

    Thanks for your help

  • Patrick Phillips Dec 10, 2006

    The fix for KNA-DV4100 was sending the unit to Kenwood for service. The Crazy readings were attributed to dvd fogging and were corrected when the unit was professionally cleaned. So now I am stuck with an updated nav dvd that I really do not need. Ebay time #150069469481. So when your unit acts up just send it in to be professionally cleaned.

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I have seen this before it is hard to put into words what cause the trouble you are haveing, you done the right thing by ordering the update wait for that to come then go through the install process. The processor chip inside is what doing it the update might help and it might not GPS units can not handle any kind of power spike no matter how small its that or the single from a satellite could have done it that happens alot when the rays from a sun spot don't get filltered out it can mess up the satellite single and send crazy info down to the unit which messes up the unit processor. Some units has a small battery inside if yours has one take it out before you do the update just for an hour then put it back in give it two min, and start your update if you don't have a battery plug it in turn it on then unplug with power butten still on give it an hour then start your update good luck some times the update works and some times it don't.

Posted on Oct 12, 2006

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