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Discussion Starter · #1 ·
This just began happening today when I turned on the NAV and the door to the DVD tray was open. My NAV system is telling me I'm on roads and in places that I'm not. When I turn off the car and restart later, it is correct for a while, but once on the interstate it won't recognize that I've made an exit. When I pulled in my driveway the NAV system thought I was in a field nearly 10 miles from my house. Is it malfunctioning or does it need a CTRL-ALT-DEL style reboot?
 

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Re: NAV giving incorrect location (ceguru)

I just found an older post where someone had a similar problem. I will try the reset fix and see if that works.<p>Update: It didn't work. Can anyone help?<BR><BR>
<i>Modified by ceguru at 11:51 AM 4-17-2006</i>
 

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Re: NAV giving incorrect location (ceguru)

What I did when mine was off by about 785 miles.<p>Car off: Unplug the 3-4 wires on the back of the DVD player. One wire, maybe a yellow one does not have a plug. Just leave it alone. I waited at least 30 minutes (we were driving on a long trip) then replug everything back in with the car off.<p>It worked for me,<p>jib<br>
 

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Re: NAV giving incorrect location (jib)

I think there is more to it than a reset of the system. When you find your NAV has you positioned way off track check to see how many satellites it has aquired. Needs to be a minimum of 3 to triangulate your position.<p>There is a known problem and your Volvo dealer can call their local Volvo Rep (also called 'factory rep' I think) and get the details on how to fix it. It's something along the lines of 'apply ferrite tape to the GPS antenna to avoid interferance from the antenna array'.<p>I had mine fixed about 10 months ago and it works much better now. However, it has acted up twice since then and shown 0 satellites for a couple days each time. I took it apon myself today to apply my own shileding tape and it seems to be better. But time will tell if what I did really fixed it.<p>I'll post pics if you'd like me to.<p>LTA<p><br>
 

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Re: NAV giving incorrect location (LTA)

Hmm. I had a similar problem after replacing the passenger side outside mirror. Nav randomly shows completely incorrect location. Taken it back to dealer twice, both times it worked perfectly. Dealer looked at me like I was crazy. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"> Do you have a TSB number for that fix? Thanks.<p>a
 

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Re: NAV giving incorrect location (achaar)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>achaar</b> »</i></TD></TR><TR><TD CLASS="quote">Hmm. I had a similar problem after replacing the passenger side outside mirror. Nav randomly shows completely incorrect location. Taken it back to dealer twice, both times it worked perfectly. Dealer looked at me like I was crazy. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"> Do you have a TSB number for that fix? Thanks.<p>a</TD></TR></TABLE><p>Odd your problem started after the mirror repair, I'll guess it's unrealted.<p>I don't have the TSB/TNN, sorry.<p>It took me a bit of pushing but the tech foreman finally contacted his local Volvo facotry rep who told him it's a known problem and gave him the info on the fix. Here is the info from my service invoice:<p>36004-2 Software control module downloading (2)<br>1 30677012 4 upgrade ATM<br>39529 apply copper ferite tape to GPS antenna<br>1 30679576 6<p>I think the 3067xxxx are the part numbers.<p>I opened up the plastic roof liner at the back of the car (where the interior lights are) and looked for the copper ferrite tape. Look at these pictures, I think the tape is abvious (two small pieces of thick gray tape):<p><IMG SRC="http://img.photobucket.com/albums/v607/field172/XC90/IMG_2646_21prcnt.jpg" BORDER="0"><p><IMG SRC="http://img.photobucket.com/albums/v607/field172/XC90/IMG_2638_21prcnt.jpg" BORDER="0"><p><br>About 11 months after they did this fix the problem came back and I had a situation where I was receiving 0 satellites. That's when I decided to take the cover off and try my own repair.<p>I put the NAV into the hidden menu mode and went to the GPS screen that shows the signal level for all the satellites. I watched the levels as I moved the two pieces of tape to various places (within the same general 2-4 sq. inches on the side of the GPS receiver). It was a long tedious task (about 40 minutes of trial and error). I eventually found a spot that seemed to give the best signal and had another couple months of success. The satellite signal level screen shows numbers from 20 to 55 in the rightmost column, where 55 is strongest and a minimum of 45 is needed for the system to say 'OK' beside that particular satellite (and lock on to its signal). I can post pics of this screen if you would like. The new location of th tape is within a 1/4" of where Volvo put it but I overlapped them a bit and tried to completely cover the holes on the side of the unit.<p>Take this with a grain of salt since I'm still making an educated guess that these two gray things are in fact the ferrite tape they applied.<p>Now, 3 months since my own attempted repair, I lost all signals again. So this time I applied a much larger piece of foil tape that nearly covers the entire GPS reciever and that seems to have done the trick... for now <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> <p>Good luck and please post the TNN/TSB if you find it.<p>LTA<p>
 
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