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| This is a discussion on 2008 Nav System E/W Heading Error within the Gen II Prius Audio and Electronics forums, part of the Gen II (2004-2009) Toyota Prius Forums category; I am new at this and searched first but did not see this reported so hope this is not a ... |
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2008 Nav System E/W Heading Error
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04-27-2008, 02:09 AM
| #1 |
| BigBear1545 Join Date: Sep 2007 Location: San Diego, CA.
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My Car: 2008 Prius Model: Package: #6 Touring Thanks: 0
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Friends: 0 |  2008 Nav System E/W Heading Error I am new at this and searched first but did not see this reported so hope this is not a dupe. When I select the mode to display my vehicle centered on the display screen heading up with the map moving under the bug, the upper left corner compass rose should point in the direction of travel. The compass heading is correct only when heading North or South - when I turn Eastward the compass heading shifts Westward. Turning Westward likewise the compass rose shifts the opposite way. Additionally, I have noticed that in this mode when I have restaraunts selected for display, they are incorrectly displayed left or right of my path on cross streets. Is this a known problem? |
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04-27-2008, 10:08 AM
| #2 |
| Senior Member  Join Date: Oct 2007 Location: TJ'ville
Posts: 121
My Car: 2008 Prius Model: Package: #6 Thanks: 1
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Friends: 0 | Re: 2008 Nav System E/W Heading Error Actually, it's not broken. When in that mode, the red half indicates north, regardless of the direction in which you're traveling. |
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04-27-2008, 11:33 AM
| #3 |
| Senior Member  Join Date: Mar 2006 Location: Northern Michigan
Posts: 10,477
My Car: 2006 Prius Model: Package: #7 Thanks: 95
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Friends: 10 | Re: 2008 Nav System E/W Heading Error Which side of the street a POI is on is determined algorithmically. There is not a huge database showing every address in North America, instead GPS NAV systems use an algorithm that takes the starting and ending numbers for a block and evenly distributes them. This will usually get you pretty close, but it's not exact. If the actual street numbers are goofy or don't follow consistent rules, then left and right can be backward, or you will miss by a few buildings. It's just part of the compromise. Tom |
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04-27-2008, 01:19 PM
| #4 |
| BigBear1545 Join Date: Sep 2007 Location: San Diego, CA.
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My Car: 2008 Prius Model: Package: #6 Touring Thanks: 0
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Friends: 0 | Re: 2008 Nav System E/W Heading Error Thanks, Davidtm. That makes perfect sence and I feel like a dummy for not thinking of it. I have not tackled the navigation manual yet to learn all the features of the system but it is on my to-do list. Regards, BigBear1545 |
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