Nav seems to getting funky

Mitchla · 11-20-2005, 11:48 AM

Has anyone even found their Nav system to get... um... worse all of a sudden. It seems like in the last month, my 2004 Nav is doing a lousy job. Sometimes when I make a detour, it will refuse to recalculate. At the beginning of a trip, it rarely will recalculate if I don't adhere to its initial route plan.

It also seems as if it gets "lost" more often -- it can't find the road I'm on and has me driving through buildings, Godzilla-like. (This seems like 2 different problems -- hardware and software.)

Can the software just get glitchy all of a sudden?

Thanks.

Wayne · 11-20-2005, 12:58 PM

Sounds like something's broke to me. Does it still say "GPS" in the upper left-hand corner of the map? If it does right now, glance up there when it's having difficulty.

A less likely possibility is your tires. Have you done anything unusual with them lately (like putting an unusual size on)?

The only thing I can think of at the moment is it might not recalc routes if it doesn't think it's on a street at the moment. Both those things can confuse the system if they aren't compensated for.

You haven't done any wiring mods to your car, like the NAV defeat wire mod, right?

I doubt it's software if it worked before. You say it's intermittent -- but your preference is still set to "Auto Reroute" in Setup, right?

That's all the possibilities I can think of at the moment...

jrfaris · 11-21-2005, 01:33 AM

We had a "funky" nav problem on a recent trip up from SoCal. We were going west through Bakersfield headed for I5. I wanted to go a ways north on 99 before taking a backroad across. Anyway, the nav wanted me to head west at each exit so it was recalculating constantly and taking a long time. So, I tried to cancel the guidance and that option was grayed out. I then tried to delete the destination but that took even longer. It finally returned to the map and tracked ok, but I couldn't input a new destination. It kept saying my home desination was outside the map area (but the region was still correctly displayed) and asked if that was ok. I tried both yes and no - neither worked. I also tried to enter a destination from a map location which didn't work either. So we continued without nav guidance. Ultimately, when we stopped for gas and "re-booted", the problem went away. The whole problem was probably caused by trying to modify the route during a recalculation but I hope it isn't something more...

windstrings · 11-21-2005, 01:49 AM

Quote:

A less likely possibility is your tires. Have you done anything unusual with them lately (like putting an unusual size on)?

The only thing I can think of at the moment is it might not recalc routes if it doesn't think it's on a street at the moment. Both those things can confuse the system if they aren't compensated for.

Wow... I am totally uneducated on the NAV system yet since I don't yet have my car and I haven't located a NAV manual yet....

I would figure a NAV would track mileage based on gps readings just like a handheld gps would while walking down the street?

Is the NAV dependant upon the rev of the wheels to be accurate?

wrprice · 11-21-2005, 02:53 AM

Quote:

Originally posted by windstrings@Nov 21 2005, 12:49 AM
Is the NAV dependant upon the rev of the wheels to be accurate?

[snapback]158952[/snapback]

The NAV system actually monitors the distance the car travels and any rotation (turns) in order to estimate position in the case where the GPS satellite signal is too weak or unavailable due to obstructions. You don't get that in a handheld unit; it gets a signal or it doesn't.

Bill Merchant · 11-21-2005, 03:24 AM

Quote:

Originally posted by windstrings@Nov 20 2005, 11:49 PM
Wow... I am totally uneducated on the NAV system yet since I don't yet have my car and I haven't located a NAV manual yet....

I would figure a NAV would track mileage based on gps readings just like a handheld gps would while walking down the street?

Is the NAV dependant upon the rev of the wheels to be accurate?

[snapback]158952[/snapback]

Like WRPrice said, the nav system "dead reckons" as well as uses GPS. There's even a "Tire Reset" button in one of the screens for when you change tires. Odometer distance and MPG are calculated off tire rotations.

windstrings · 11-21-2005, 04:11 AM

Quote:

Originally posted by Bill Merchant@Nov 21 2005, 01:24 AM
Like WRPrice said, the nav system "dead reckons" as well as uses GPS. There's even a "Tire Reset" button in one of the screens for when you change tires. Odometer distance and MPG are calculated off tire rotations.

[snapback]158974[/snapback]

NIce!... thanks for the info..... I"m starting to be even more amazed.... I can't wait!...

Spanky1 · 11-21-2005, 07:51 AM

While using mine on Friday, It told me to exit the highway I was on, even showing the turn and next roadway. As I was getting off it went back to the original highway and told me to continue on that route. What a pain in the ass, I almost got smashed from behind.

Wayne · 11-21-2005, 08:46 AM

Quote:

Originally posted by windstrings@Nov 21 2005, 05:11 AM
NIce!... thanks for the info..... I"m starting to be even more amazed.... I can't wait!...
[snapback]158978[/snapback]

Yes, it gives you a nice, smoothly-moving position indicator between GPS updates too. So even when the GPS is easy to acquire, there's an advantage to it.

windstrings · 11-21-2005, 01:40 PM

Quote:

Originally posted by Spanky1@Nov 21 2005, 05:51 AM
While using mine on Friday, It told me to exit the highway I was on, even showing the turn and next roadway. As I was getting off it went back to the original highway and told me to continue on that route. What a pain in the ass, I almost got smashed from behind.

[snapback]158997[/snapback]

Humm.. is this just the nature of the beast?.. or at least fairly common?.. or is this just a rare occurence by other users?

11-20-2005, 11:48 AM	#1
Mitchla Senior Member Join Date: Dec 2003 Posts: 107 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Has anyone even found their Nav system to get... um... worse all of a sudden. It seems like in the last month, my 2004 Nav is doing a lousy job. Sometimes when I make a detour, it will refuse to recalculate. At the beginning of a trip, it rarely will recalculate if I don't adhere to its initial route plan. It also seems as if it gets "lost" more often -- it can't find the road I'm on and has me driving through buildings, Godzilla-like. (This seems like 2 different problems -- hardware and software.) Can the software just get glitchy all of a sudden? Thanks. __________________ http://www.MitchellRose.com

11-20-2005, 12:58 PM	#2
Wayne Senior Member Join Date: Aug 2005 Location: Fort Wayne, IN Posts: 665 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Sounds like something's broke to me. Does it still say "GPS" in the upper left-hand corner of the map? If it does right now, glance up there when it's having difficulty. A less likely possibility is your tires. Have you done anything unusual with them lately (like putting an unusual size on)? The only thing I can think of at the moment is it might not recalc routes if it doesn't think it's on a street at the moment. Both those things can confuse the system if they aren't compensated for. You haven't done any wiring mods to your car, like the NAV defeat wire mod, right? I doubt it's software if it worked before. You say it's intermittent -- but your preference is still set to "Auto Reroute" in Setup, right? That's all the possibilities I can think of at the moment... __________________ 2005 Driftwood Pearl, BC Package #6 ('All options' package) Using a Verizon/Motorola e815 over Bluetooth Uploaded my Verizon phone book via a PDA in post 11460 (link fixed) Tested MPG vs MPH in post 11153 (link fixed)

11-21-2005, 01:33 AM	#3
jrfaris Senior Member Join Date: Feb 2004 Location: Lake Tahoe Posts: 347 My Car: 2007 Prius Package: N/A Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	We had a "funky" nav problem on a recent trip up from SoCal. We were going west through Bakersfield headed for I5. I wanted to go a ways north on 99 before taking a backroad across. Anyway, the nav wanted me to head west at each exit so it was recalculating constantly and taking a long time. So, I tried to cancel the guidance and that option was grayed out. I then tried to delete the destination but that took even longer. It finally returned to the map and tracked ok, but I couldn't input a new destination. It kept saying my home desination was outside the map area (but the region was still correctly displayed) and asked if that was ok. I tried both yes and no - neither worked. I also tried to enter a destination from a map location which didn't work either. So we continued without nav guidance. Ultimately, when we stopped for gas and "re-booted", the problem went away. The whole problem was probably caused by trying to modify the route during a recalculation but I hope it isn't something more... __________________ 2007 Barcelona Red CarMyne 8 Mar 2007 (46.9 MPG over 31 fill-ups in 2007) 2004 Salsa Red, 7/13/04-2/27/07 (46.4 MPG, best tank 54.4)

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11-21-2005, 07:51 AM	#8
Spanky1 Join Date: Apr 2005 Posts: 28 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	While using mine on Friday, It told me to exit the highway I was on, even showing the turn and next roadway. As I was getting off it went back to the original highway and told me to continue on that route. What a pain in the ass, I almost got smashed from behind.