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Old 11-03-2015, 12:58 AM   #101
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The arrival time on ANY GPS is calculated on the speed limits of the roads on your route. Then as you drive it updates based on your average speed. This means your arrival time is simply an estimate, but one that changes constantly due to real world realities. It starts to get close only as you near your destination.

I'm not sure why you would expect anything else from a GPS device??? How do you think it should work?
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Old 11-03-2015, 01:24 AM   #102
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The arrival time on ANY GPS is calculated on the speed limits of the roads on your route. Then as you drive it updates based on your average speed. This means your arrival time is simply an estimate, but one that changes constantly due to real world realities. It starts to get close only as you near your destination.

I'm not sure why you would expect anything else from a GPS device??? How do you think it should work?

Yesterday ours was WAY off - a 90 minute route showing as something like 250 minutes. Turned out we had 1-2 other destinations previously loaded that when we entered our destination it just tacked them on. In my normal vehicle GPS it asks if you want to add or replace. This one has no such request that I ever saw.
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Old 11-03-2015, 06:26 AM   #103
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I use my garmin in motorhome also. It gives a much better estimated arrival time.
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Old 11-03-2015, 07:24 AM   #104
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My Garmin is just about spot on when it comes to arrival time. I do notice that the speed limit announcements are not correct. Always thought this may have something to do with it. To be two hours or more off on a three hour trip is not acceptable. I have had several GPS and they were never this far off. I would expect much better than what I have gotten from a cheaper GPS.
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Old 11-03-2015, 01:19 PM   #105
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On the Jensen, if you don't trust the arrival time, you can touch it and switch to remaining distance. You can then do your own math. Other than city traffic situations, I usually just divide by 50 for a good estimate almost no matter what. Even if the speed limit is 65 the math usually doesn't work out that way due to starts, stops, meals and bathroom breaks, toll booths, relatives or work issues calling right when you need to get back on the road, whatever...
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Old 11-03-2015, 01:36 PM   #106
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Thanks that is what I have been doing. Still think it should be more accurate !!!!!
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Old 11-04-2015, 12:27 AM   #107
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My Garmin is just about spot on when it comes to arrival time. I do notice that the speed limit announcements are not correct. Always thought this may have something to do with it. To be two hours or more off on a three hour trip is not acceptable. I have had several GPS and they were never this far off. I would expect much better than what I have gotten from a cheaper GPS.
Ours has never been that far off at the start of a trip. Sure it's off but something is not right if it's 2-hours off for a 3-hour trip. Sounds like a routing error of some kind.
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Old 11-11-2015, 09:21 AM   #108
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Went on a 3 hour trip this weekend and the GPS was over 1 hour off. No stops, going 65 miles an hour. I realize that it is an estimate, but my Garmin on the same trip (used side by side) was just over 5 minutes off. What I have noticed is that the speed limit notification is off considerably. The speed limit on I 10 is 70 mph, the speed limit on the GPS said it was 50 mph. Can this be adjusted or corrected. Would love to hear from Jenson, but get no response from them. This problem has been from day one.
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Old 11-11-2015, 10:16 AM   #109
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The speed limit on I 10 is 70 mph, the speed limit on the GPS said it was 50 mph. Can this be adjusted or corrected. Would love to hear from Jenson, but get no response from them. This problem has been from day one.
The posted speed limit info displayed is in the GPS database so it will take a software update to correct it.
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Old 11-11-2015, 11:10 AM   #110
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I have the current updates and the freeway speed limits are still way off - 55mph on hwy 5 where it's actually 70mph.
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Old 11-11-2015, 11:22 AM   #111
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I found that the RV mode on my Garmin RV GPS chooses the "Truck / Towing" speed limit here in CA (55 mph on most major highways). I use it in auto mode to get appropriate speed limit selection here. Can use RV mode when in states without differing truck and car speed limits.
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Old 11-11-2015, 11:48 AM   #112
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No sure what problems you folks are having - our Jensen GPS isn't perfect but it's pretty much equal with other GPS units I've used (we have them built in in our car and SUV). Does it estimate the time off by a little - sure - but so much is determined by the route it sets, the speed limits between each point and my average speed/stops, etc. It's never been HOURS off, even on 300 mile trips in my RV.

It does occasionally get the speed limit wrong. But only for a short while.

I used to have mine setup for "truck" but didn't like the way it effected the operation of the unit (roads, speed limits). So, I changed it to "car."

Again, I'm not saying it's perfect but if yours is hours off on a one hour trip then perhaps something else is amiss. Maybe the unit has a problem or you've got some odd routing or waypoint setup that you haven't noticed.
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Old 11-11-2015, 11:53 AM   #113
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Ah HA...that's why it only reads 55mph. I will reset to automobile. Is there a way to make the font bigger?
Jim
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Old 11-11-2015, 05:44 PM   #114
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I have the current updates and the freeway speed limits are still way off - 55mph on hwy 5 where it's actually 70mph.
It will probably will stay that way until someone sends the map vendor a complaint or fills in an "update" form on their website, if one is offered. I think most map vendors only fix what folks complain about...eventually...if enough customers complain...
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Old 11-11-2015, 06:32 PM   #115
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Redldr1...I believe it shows the speed limit @ 55mph because I have the GPS set to truck mode. I will change it to verify but that makes sense now.
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Old 11-11-2015, 09:16 PM   #116
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We learn something new every day!
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Old 12-21-2015, 08:55 PM   #117
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looks like I'm screwed too. it appears my device had its first GPS activation in September 2014. That's what I get for buying a leftover! I will probably pay the $65 to update but not until I hear back from their customer service. Might lean on my dealer a bit to try and get them to cover it. What extra's can I weasel out of them? already got 3 Maxx Air vent covers and the windshield cover.
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Old 12-21-2015, 09:52 PM   #118
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On my trip from Maine to Florida a couple weeks ago I put my Garmin Nuvi on the dash and ran it as well as the Jensen in dash unit. The Garmin sitting on the dash was much easier to see from the driver's seat, the Jensen screen is too low so it's out of the driver's line of sight. I don't want to be driving 65mph looking down at the dashboard to figure out where I am. The Garmin is much more like a HUD. Garmin is much more user friendly overall. Searching addresses is easier, finding gas stations, places to eat, etc. much easier. My Jensen unit is going to be for listening to music from now on. My Garmin came with lifetime updates included.
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Old 12-21-2015, 11:51 PM   #119
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On my trip from Maine to Florida a couple weeks ago I put my Garmin Nuvi on the dash and ran it as well as the Jensen in dash unit. The Garmin sitting on the dash was much easier to see from the driver's seat, the Jensen screen is too low so it's out of the driver's line of sight. I don't want to be driving 65mph looking down at the dashboard to figure out where I am. The Garmin is much more like a HUD. Garmin is much more user friendly overall. Searching addresses is easier, finding gas stations, places to eat, etc. much easier. My Jensen unit is going to be for listening to music from now on. My Garmin came with lifetime updates included.
I agree, I use my Garmin Nuvi in a more user friendly spot too! It is too much time with your eyes off the road trying to look at that Nav radio. Like others have said there are ETA and other routing issues. Routing going to Yosemite had me making a U-turn and heading back out of the park and taking another entrance in.
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Old 12-22-2015, 12:46 AM   #120
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I keep wanting to hate the Jensen GPS, but after 6,000 miles it's been pretty good. Not great, but not bad either.

If it worked really bad I'd replace it gladly. It's pretty clunky. But it hasn't let me down too much yet. I've updated mine ($80!) but the database of POIs is the biggest letdown.

I agree that this is faint praise.
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