Stupid mistake upgrading to bespoke...

[nextcar]

I got a upgraded bespoke unit from a totaled car - mainly to pick up navigation.
I ran into an issue that I will outline that I hope will help someone in the future...

After following the other guides in this section, I powered on the upgraded unit and ran into the following issue: The map displayed by the nav function was totally wrong, claiming I was in a different city about 400 miles away!

I ran the built in diagnostics and everything passed. I reset the extension box and it lost all the previous map road data and now claimed I was in an unpaved area - zooming out still indicated I was 400 miles away.

I went into the GPS signal diagnostic mode, waited 5 minutes for signal acquisition and it indicated lock on 11 satellites and gave me GPS co-ordinates. I plugged the coordinates into google maps and they were correct!

At this point I was beginning to think that the used extension box was bad, even though it passed self test. I was pissed and discouraged... time for a drive!

I put the tools away and got ready for a drive. I backed out of the driveway, looked down, and the map showed the correct location!

Summary: After adding a used NAV unit/extension box, your map location may show the last location of the previous car until you move your car a bit!

I felt so stupid for wasting at least 20 minutes trying to diagnose a problem that was not real...

[lbroskee]

Originally Posted by nextcar

I got a upgraded bespoke unit from a totaled car - mainly to pick up navigation.
I ran into an issue that I will outline that I hope will help someone in the future...

After following the other guides in this section, I powered on the upgraded unit and ran into the following issue: The map displayed by the nav function was totally wrong, claiming I was in a different city about 400 miles away!

I ran the built in diagnostics and everything passed. I reset the extension box and it lost all the previous map road data and now claimed I was in an unpaved area - zooming out still indicated I was 400 miles away.

I went into the GPS signal diagnostic mode, waited 5 minutes for signal acquisition and it indicated lock on 11 satellites and gave me GPS co-ordinates. I plugged the coordinates into google maps and they were correct!

At this point I was beginning to think that the used extension box was bad, even though it passed self test. I was pissed and discouraged... time for a drive!

I put the tools away and got ready for a drive. I backed out of the driveway, looked down, and the map showed the correct location!

Summary: After adding a used NAV unit/extension box, your map location may show the last location of the previous car until you move your car a bit!

I felt so stupid for wasting at least 20 minutes trying to diagnose a problem that was not real...

lol went thru this same thing wen i sold my nav box. no1 seems to tell ppl that it needs to calibrate

[Tcoat]

Even my poor old Garmin does this when I plug it in. Always shows the last location until I move. Must say it baffled me the first time it did it. Since it was telling me that downtown Detroit was my driveway.

[Dadhawk]

@nextcar don't feel too bad, I did the exact same thing. Swapped out the base radio in my '13 with a radio from '14 and the NAV unit bought on eBay. Once installed, I made sure I had good GPS signal, thought I was good to go, and then saw the GPS thought I was 1,000 miles from home. Spent about 10 minutes troubleshooting on the radio, couldn't find anything. MomHawk came out, saying I needed to move so she could get her car out of the garage.

I moved about 1 car length and boom, problem solved. Never had a GPS (I've owned probably 2 dozen or more over the years) that did that, at least that I noticed.

Yes, it takes them a second to find out where they are, that's a function of having to find satellites, calculate it's position etc. All others though updated the map once it knew where it was, even when sitting still.

[nextcar]

Originally Posted by Dadhawk

All others though updated the map once it knew where it was, even when sitting still.

Exactly! Same in my experience... with the others I have used, it could take up to 3 minutes to figure out where they were (based on the number of satellites covering the area - I have been in some very remote places like Bhutan)... but once they locked on the signal, all the others updated the map immediately!