Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Audio/Visual/Navigation (http://www.jeepgarage.org/f155/)
-   -   Navigation Performance (http://www.jeepgarage.org/f155/navigation-performance-56105.html)

tllapointe 03-08-2013 04:55 PM

Navigation Performance
 
I just spent an hour experimenting with my Overland Nav system.

Things you CAN do while moving: Search for and Select POI by category, Select POI from Favorites, Activate navigation to these selected POI's.

You CANNOT use the screen keyboard to enter a POI search name or street address.

Disappointed in navigation accuracy: In a small town of 7,000, the GPS directed me across a suspended pedestrian bridge; directed me down a dead end street that was a through street 20 years ago; would not take me onto a major highway through town, though the road showed on the map.

Disappointed in numerous messages that I was "entering an area with no data" while these streets were on the map and these were major streets that have been here for 100 years.

I have a Garmin 3590LMT loaded with up-to-date NAVTEQ maps. I don't see any of these issues on that GPS. I suspect that the maps themselves might be visually correct but the database behind them might be poor.

I am leaving on a 7,000 mile trip in 2 weeks. I am concerned about what I will experience so I am bringing my portable Garmin.

Tom

ColdCase 03-08-2013 05:15 PM

Re: Navigation Performance
 
You must have the 730. As with any OEM Nav radio I've seen, the street maps are way out of date and lacking a update path for current data. The 730 always wants to force me out of my way onto main roads, annoying. The Garmin based 430 is almost as out of date.

Neither of the Nav Radios will match an up to date Garmin stand alone unit. Garmin released a map update last week for example, by 5 year old stand alone is by far more up to date than the 730. Not that the Garmin stand alones don't have their faults.

The factory 730N seems to be decent around major cities, but lack the sophisticated features that would make it useful otherwise.

tllapointe 03-08-2013 05:16 PM

Re: Navigation Performance
 
I just checked the Navteq site and looked at FAQ's. It states that Navteq does not generate the navigation directions - the GPS supplier does.

Tom

tllapointe 03-08-2013 06:41 PM

Re: Navigation Performance
 
Quote:

Originally Posted by ColdCase (Post 776284)
You must have the 730. As with any OEM Nav radio I've seen, the street maps are way out of date and lacking a update path for current data. The 730 always wants to force me out of my way onto main roads, annoying. The Garmin based 430 is almost as out of date.

Neither of the Nav Radios will match an up to date Garmin stand alone unit. Garmin released a map update last week for example, by 5 year old stand alone is by far more up to date than the 730. Not that the Garmin stand alones don't have their faults.

The factory 730N seems to be decent around major cities, but lack the sophisticated features that would make it useful otherwise.

I have the new 2014 8" RA4 in a car made just 3 weeks ago.

jerryw1000 03-08-2013 10:33 PM

Re: Navigation Performance
 
Quote:

Originally Posted by tllapointe (Post 776344)
I have the new 2014 8" RA4 in a car made just 3 weeks ago.


Oh man, don't tell me that. I just ordered that radio in a Limited. Geez Louise, why can't they get these expensive car NAV units to work as well as a $100 throw away unit?

tllapointe 03-09-2013 05:41 PM

Re: Navigation Performance
 
I exchanged emails with Chrysler support. They passed my info to product development. They did say that Chrysler does not make the GPS or the maps. They suggested I contact Navteq.

I checked the Navteq map. Their map for my town does have errors that explain 2 of the Jeep's erroneous directions I experienced. It does not explain the others, but discovering these map errors makes me feel better about my upcoming trip. I expect the major interstates and highways will be accurate.

Navteq has a system to report map errors. I reported the errors I found but it can take months before they make it into new map updates.

Tom

1stJeepGC 03-09-2013 10:56 PM

Re: Navigation Performance
 
Quote:

Originally Posted by tllapointe (Post 776958)
I expect the major interstates and highways will be accurate.

Tom

Greetings,

Most of the problems occur traveling into the small towns, back roads or small developments that reroute local roads. TomTom maps have same problem.

Both Navteq and TomTom use different sets of maps. Some map set contain all information needed for 3D Building, landmarks and terrain, while other sets have just the basic information. Sometimes they update one set and forget to update another. In the last 2 years, I noticed that the smartphone navi apps, refresh the maps more often.

Good luck with your 2014 JGC and have a safe trip.

Best for now.:)

allypally 03-10-2013 02:43 PM

Re: Navigation Performance
 
The issue you face is well and truly documented here http://www.jeepgarage.org/f190/gps-p...t-50171-7.html
It appears to be the programming of Routing, where if you select a route from say point A to point B, if that route has UNVERIFIED roads in it, the system will ignore those roads and select only a VERIFIED roads route. This can be 100's of miles out of your way.
It is not a NAVTEQ issue, but a JEEP one. As Navteq correctly advised, they simply supply maps to Jeep. How Jeep configures and uses those maps is Jeep's issue. I suspect Jeep uses Becker to do that configuration. The problem is confounded in Australia, where most roads outside of cities are unverified. Owners are about to take Jeep to court over it, as they have stonewalled us for a year over the issue, continually saying a fix is a few weeks away.

bill_de 03-10-2013 03:13 PM

Re: Navigation Performance
 
Quote:

Originally Posted by allypally (Post 777485)
The issue you face is well and truly documented here http://www.jeepgarage.org/f190/gps-p...t-50171-7.html
It appears to be the programming of Routing, where if you select a route from say point A to point B, if that route has UNVERIFIED roads in it, the system will ignore those roads and select only a VERIFIED roads route. This can be 100's of miles out of your way.
It is not a NAVTEQ issue, but a JEEP one. As Navteq correctly advised, they simply supply maps to Jeep. How Jeep configures and uses those maps is Jeep's issue. I suspect Jeep uses Becker to do that configuration. The problem is confounded in Australia, where most roads outside of cities are unverified. Owners are about to take Jeep to court over it, as they have stonewalled us for a year over the issue, continually saying a fix is a few weeks away.

I haven't seen Garmin or Harman Kardon mentioned. Where do they fit into the equation?

tllapointe 03-10-2013 04:25 PM

Re: Navigation Performance
 
Quote:

Originally Posted by allypally (Post 777485)
The issue you face is well and truly documented here http://www.jeepgarage.org/f190/gps-p...t-50171-7.html
It appears to be the programming of Routing, where if you select a route from say point A to point B, if that route has UNVERIFIED roads in it, the system will ignore those roads and select only a VERIFIED roads route. This can be 100's of miles out of your way.
It is not a NAVTEQ issue, but a JEEP one. As Navteq correctly advised, they simply supply maps to Jeep. How Jeep configures and uses those maps is Jeep's issue. I suspect Jeep uses Becker to do that configuration. The problem is confounded in Australia, where most roads outside of cities are unverified. Owners are about to take Jeep to court over it, as they have stonewalled us for a year over the issue, continually saying a fix is a few weeks away.

Thanks. It sure seems to be similar to what I am experiencing. I got more screen messages today warning me that I was entering an area with unverified data.

Based on what you said, I suspect that the unverified data is causing some of my goofy directions. Rather than telling me to turn left, the GPS directed me to go straight ahead then loop me around to a point 100 yards to my left.

tllapointe 03-11-2013 02:16 AM

Re: Navigation Performance
 
Quote:

Originally Posted by bill_de (Post 777505)
I haven't seen Garmin or Harman Kardon mentioned. Where do they fit into the equation?

I really cannot tell who makes the GPS. I did read that the radio is an Alpine in an Overlook. HK makes the 800 watt system for higher end GC's.

The GPS does not feel like a Garmin. Keep in mind, I haven't even driven my Overland on an Interstate yet and only have 200 miles on it.

For example, Favorites are listed alphabetically. My Garmin lists them by distance from current location. I like that because I don't want to scroll through my Colorado, Arizona, and Florida favorites while I am here in Maine.

My Garmin does not say "Recalculating New Route" every time I drive past a suggested turn - it just silently recalculates. The Jeep speaks a whole sentence announcing recalculation.

On my Garmin, I can find a POI and then save it to Favorites. On the Jeep, as soon as you select a POI it calculates a route for 5-10 seconds and then you can save it. I don't like that. It wastes time because usually I am just saving them for the next day's driving.

My Garmin highlights a track (breadcrumb trail) showing where I've been. I use that a lot in unfamiliar areas and off-road. I haven't found that on the Jeep yet.

On major streets in town, I am getting these messages "entering an area with unverified data - drive with caution" and I have to hit "OK" to clear the screen. I have never seen this on my Garmin and I have thousands of miles on it across the country.

As I said, it does not feel like a Garmin so far.

I do like having the Nav system built in. The directions get announced through the rear seat speakers and it is quite clear.

Tom

bill_de 03-11-2013 06:26 AM

Re: Navigation Performance
 
Thanks Tom,

I'm not sure what brand nav my MDX has, but it work pretty much like you describe the Garmin ... including bread crumbs,


All times are GMT -5. The time now is 05:58 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community