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2011 DTS Platinum
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Discussion Starter #81
Incredibly the dealer readily admitted that there IS a set procedure to manually recalibrate the nav system to the GPS. I haven't taken it in yet, but I'll let you know what happens. Since my system announces that I've arrived at my destination approximately .2 miles before I get there, recalibration, or something, is definitely in order. Other than not knowing exactly where the car is relative to the final destination, it works as advertized.

If you don't mind...when You have yours re-calibrated...please ask if there is a TSB number or how would another dealer find the information to recalibrate?

Mine is about 100 feet "OFF" .... it shows the car actually "BEHIND" of where the car really is.
You can drive "PAST" the street..."THEN" it tells you..."TURN NOW"...

Texas Jim
 

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2006 DTS
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42 Posts
I will certainly do that. The dealer mumbled something about having to disconnect the battery, do something with onstar, and then they can recalibrate. When I get it done, I'll take notes and pass along to everyone. Hopefully, I'll finally get my license plates next week and schedule a visit to the dealer for inspections, etc. I'll have it done then. They made it sound like a fairly simple process to recalibrate. I certainly hope so.

Ken.
 

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2008 DTS LUX III - Gold Mist traded for 2004 Tbird
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1,511 Posts
Back about 10 years ago, I borrowed a buddys Range Rover for a month while we vacationed in California.. I thought he had never used the Nav....because it was so far off......about 200/300 yards. So I took it by the dealer. Turns out he had assumed they were all like that and i had assumed it was broken.
We were both wrong.
Believe it or not, they stopped what they were doing and "calibrated" the GPS to the NAV........ they took it out to a field they said, and proceeded to go through some procedure using just the knobs and things on the radio.......took them maybe 20/30 minutes and he was back and the unit was MUCH better.
Accurate to maybe 20/50 Yards. There was no charge. The car was in warranty.And this was years ago. 2002 if I remember correct.
It was a very,very nice vacation. We went everywhere in Calif. Put on maybe 2000 miles! Yes, I told Jeff what we were going to do....It was all good with him!

But I have never heard of calibrating a system since then.
BTW, my Garmin,with WAAS enabled is accurate to about 3 yards.
It is very likely that the Cadillac OEM is not WAAS enabled, but still "should" be accurate to less than 15 Yards according to Garmin.
 

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2008 DTS Lux III (assembled January 31, 2008)
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I finally received my copy of version 5.0c yesterday. I installed it and it did not perform any firmware updates to my nav system. I was previously running 4.1c.

I haven't driven the car with the new disc but have played with the maps a little. So far I see no change over version 4.1c with the possible exception to marginally improved coverage. There are no new features that I could find and the graphics and the funny routings appear all the same.

So, if your running 4.1c, save your money. If you're running an older version, then by all means buy 5.0c.

I'll post again once I've had some on the road time.
 

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2008 DTS Lux III (assembled January 31, 2008)
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Okay. I've been driving around with 5.0c for the past couple of days and here's my comments:

Save your money and stick with 4.1c.

The only advantage that I could find to 5.0c was more current roads.

I found many disadvantages:

The graphics seem harder to read. Maybe my eyes are weaker, but many times I found the font to be hard to read at a quick glance.

The points of interest do not seem to be updated for the items that I searched.

I also tried to find a listing of animal hospitals or veterinarians - but I could not. I had no such problem with 4.1c.

Like 4.1c, 5.0c also sent my on goofy round about routings that make little sense to someone who knows the roadways.

Anyone else running 5.0c?
 

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2011 DTS Platinum
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Discussion Starter #86
Tomko,


Thank you for your report on 5.0c.

It is appreciated.
Based on your report...I think for now I will just stay with 4.1c. :hmm:

Thanks again,

Jim
 

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2006 DTS
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42 Posts
The latest on the nav system "recalibration". I've talked to customer service a couple of times, a member of the Cadillac nav team a couple of times (who thankfully keep calling back to offer suggestions and want to know how it all works out), and 2 different dealers. I've also tried 2 different recalibation efforts recommended by the nav team and one of the dealers: 1. The nav team said I should remove the nav disk and let the car sit for a while, then reinstall. 2. The dealer nav system "guru" recommended disconnecting the battery for approximately an hour to let the electronics clear and then restart everything.

I've done both with no appreciable improvement. The system is very accurate on intersections, streets, etc., but still shows me at home well before I get here. Since I've tried 2 different nav disks (a 3.3 and a 4.1C) with the same results, I guess I and all of you will just have to live with the current system. It'll certainly get us across the country and close to where we want to go.

Too bad because everything else in the car (06 DTS Lux III) works wonderfully. A great ride, lots of power, and all the toys. If anything changes I'll certainly post any new results.
 

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2008 DTS Lux III (assembled January 31, 2008)
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I just drove to and around Montreal yesterday on 5.0c, and while I was genuinely happy to have it, it was most certainly not all that it could be.

Here's hoping that next year will bring an even better version.
 

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2011 DTS Platinum
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Discussion Starter #89
I've done both with no appreciable improvement. The system is very accurate on intersections, streets, etc., but still shows me at home well before I get here. Since I've tried 2 different nav disks (a 3.3 and a 4.1C) with the same results, I guess I and all of you will just have to live with the current system. It'll certainly get us across the country and close to where we want to go.

Too bad because everything else in the car (06 DTS Lux III) works wonderfully. A great ride, lots of power, and all the toys. If anything changes I'll certainly post any new results.


Mine is also slightly off for my home.
To help it out... I parked in my driveway and added myself to the address book.

We take a lot of road trips to unfamiliar areas... get off the main roads and just "DRIVE AROUND" looking at stuff for hours at a time...
Now... no matter where I am... even if I don't have a clue...it will get me out and back to where I know whats going on.

:cool2: :cool2: :cool2:

Texas Jim
 

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2006 DTS
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Eureka...or something! My nav system finally works correctly. After months of driving the Cadillac Customer Service team crazy with my complaints about the accuracy of the system, a solution appears to have worked. 2 things: a. The Onstar people completely reflashed my system, including the GPS, as I was driving down the road. b. The dealer installed a new 5.0 nav disk just in case the old one was faulty. I suspect the Onstar reflash solved the problem, but who knows? At any rate, the system doesn't tell me that I'm at home until I'm nearly in my driveway. That's an improvement of a couple hundred yards in accuracy. If you're having a problem with yours, push the blue button and as the Onstar operator to recalibrate your GPS. It only takes a few minutes and they can perform the function while you're driving down the road. I'm finally happy.:)
 

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2011 DTS Platinum
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Discussion Starter #93
Eureka...or something! My nav system finally works correctly. After months of driving the Cadillac Customer Service team crazy with my complaints about the accuracy of the system, a solution appears to have worked. 2 things: a. The Onstar people completely reflashed my system, including the GPS, as I was driving down the road. b. The dealer installed a new 5.0 nav disk just in case the old one was faulty. I suspect the Onstar reflash solved the problem, but who knows? At any rate, the system doesn't tell me that I'm at home until I'm nearly in my driveway. That's an improvement of a couple hundred yards in accuracy. If you're having a problem with yours, push the blue button and as the Onstar operator to recalibrate your GPS. It only takes a few minutes and they can perform the function while you're driving down the road. I'm finally happy.:)

Thank you for the information.
I might have that done myself.

Mine actually lags JUST A LITTLE behind where the car is actually "AT"
It can cause you to miss your turn.

Thanks again.

Jim
 
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