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Model specific boards => Golf mk7 => Topic started by: Optimus prime on 24 August 2015, 08:11

Title: Sat Nav-Slow to track
Post by: Optimus prime on 24 August 2015, 08:11
Does anyone else have the same issue with there sat nav dis pro?  On start up it clearly finds my location but after loading a destination it takes about 5 mins after I start driving to catch up on the map?  During this time the MFD shows "off road"

It's fine after this but this happens at the beginning of most journey's regardless of where I depart from.

Obviously a GPS fix thing with regards to satellite location but I would be interested if anyone else has the same issue.  Latest maps installed but no change.

Thanks
Title: Re: Sat Nav-Slow to track
Post by: fredgroves on 24 August 2015, 10:56
Nope, it might take a few seconds, but nothing like 5 minutes.

I'm assuming you don't live somewhere with a poor sky view?

If you just go into the nav screen, does it show your current position correctly? Albeit that it can do that without a GPS signal using inertial navigation from the last know GPS point - so check the GPS signal status icon - does it have a line through it?
Title: Re: Sat Nav-Slow to track
Post by: p3asa on 24 August 2015, 12:49
My Nav Pro is quick to find its location as well.
If I put a location in it follows it instantly.
Title: Re: Sat Nav-Slow to track
Post by: mcmaddy on 24 August 2015, 21:10
No more than 5-10 seconds for mine.
Title: Re: Sat Nav-Slow to track
Post by: Eccie on 24 August 2015, 22:16
No more than 5-10 seconds for mine.

Same ^

My old RNS in my mk5 Gti did this a couple of times, when in map mode, press nav & bring up the signal strength/No of satellites, make sure it's strong or a good number
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 25 August 2015, 06:49
No more than 5-10 seconds for mine.

Same ^

My old RNS in my mk5 Gti did this a couple of times, when in map mode, press nav & bring up the signal strength/No of satellites, make sure it's strong or a good number

Where do I find the signal strength ?
Title: Re: Sat Nav-Slow to track
Post by: Eccie on 25 August 2015, 12:21
maybe not signal strength, but it should show you how many satellites your picking up, e.g. if you have say 10/12 satellites then thats good - if you have 1/12 or a low number it would indicate a poor signal and possible a fault with your antenna.

On my old RNS in the the MK5 GTi i didn't have a roof mounted antenna, so a common issue was that the GPS unit would have shifted under the dash or was defective.
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 25 August 2015, 12:55
maybe not signal strength, but it should show you how many satellites your picking up, e.g. if you have say 10/12 satellites then thats good - if you have 1/12 or a low number it would indicate a poor signal and possible a fault with your antenna.

On my old RNS in the the MK5 GTi i didn't have a roof mounted antenna, so a common issue was that the GPS unit would have shifted under the dash or was defective.

I agree a possible antenna fault but there is nowhere on the dis pro to look at satellites or signal strength.  The only way is via VCDS
Title: Re: Sat Nav-Slow to track
Post by: Eccie on 25 August 2015, 16:23
maybe not signal strength, but it should show you how many satellites your picking up, e.g. if you have say 10/12 satellites then thats good - if you have 1/12 or a low number it would indicate a poor signal and possible a fault with your antenna.

On my old RNS in the the MK5 GTi i didn't have a roof mounted antenna, so a common issue was that the GPS unit would have shifted under the dash or was defective.

I agree a possible antenna fault but there is nowhere on the dis pro to look at satellites or signal strength.  The only way is via VCDS

If you start up Nav and have it on Map, press the Nav button and it brings up a sub menu on the left hand side of the map, there is a drop down menu, click it on to GPS and it should show you the satelites and your location.

Ah..... I see from your other post you've found out how to do it :wink:
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 25 August 2015, 17:18
maybe not signal strength, but it should show you how many satellites your picking up, e.g. if you have say 10/12 satellites then thats good - if you have 1/12 or a low number it would indicate a poor signal and possible a fault with your antenna.

On my old RNS in the the MK5 GTi i didn't have a roof mounted antenna, so a common issue was that the GPS unit would have shifted under the dash or was defective.


I agree a possible antenna fault but there is nowhere on the dis pro to look at satellites or signal strength.  The only way is via VCDS

If you start up Nav and have it on Map, press the Nav button and it brings up a sub menu on the left hand side of the map, there is a drop down menu, click it on to GPS and it should show you the satelites and your location.

Ah..... I see from your other post you've found out how to do it :wink:
.
Yes but thank you for your help - update unit rebooted by holding off button down to enable a cold start so to speak.  Destination entered satellites info display 10 locked except going under wooded area dropped to 9 perfect navigation no "off roading events" weather awful but everything else perfect.  Even tried to fool it by going a different way by re routed almost immediately.  Vast improvement over this mornings trip and others recently.  Will check again in the morning, perhaps a cold rebooted is required after a map update ?

Thanks to all for there input :smiley:
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 31 August 2015, 22:02
Update - Nav still crap after 24hrs of working properly I'm back to square 1 so a dealer visit is booked for next week. Recent events below show the Nav location is well off as I'm on the red line route!

(http://i1240.photobucket.com/albums/gg497/bondwithme/Mobile%20Uploads/1E0F525E-7B98-4584-BFB2-F4CA538E1EAB_zpshcwtmlnq.jpg) (http://s1240.photobucket.com/user/bondwithme/media/Mobile%20Uploads/1E0F525E-7B98-4584-BFB2-F4CA538E1EAB_zpshcwtmlnq.jpg.html)

(http://i1240.photobucket.com/albums/gg497/bondwithme/Mobile%20Uploads/62CDA88F-B48D-48E5-B267-D832E2A7767E_zps5rro4njb.jpg) (http://s1240.photobucket.com/user/bondwithme/media/Mobile%20Uploads/62CDA88F-B48D-48E5-B267-D832E2A7767E_zps5rro4njb.jpg.html)
Title: Re: Sat Nav-Slow to track
Post by: mcmaddy on 01 September 2015, 08:54
It can go a bit off with junctions but it quickly catches up. It also does that if you deviate at the last minute and it needs to re route. Maybe you're getting interference from an outside source eg airports or it could just be a dodgy aerial connection.
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 01 September 2015, 09:02
It can go a bit off with junctions but it quickly catches up. It also does that if you deviate at the last minute and it needs to re route. Maybe you're getting interference from an outside source eg airports or it could just be a dodgy aerial connection.

Thanks for the info but I may of found the issue (hopefully fingers crossed) as I run 2 mobius dash cams, 1 at the back & 1 at the front.  They are prone to giving of RF and I am wondering if the 2 cams in a small car are causing the issue.  I have always run 2 but in much bigger cars without any issues (BMW 5 series & Merc E class) or it maybe there location to the GPS aeriel or cabling.  Will test tonight on my return with both unplugged.

Title: Re: Sat Nav-Slow to track
Post by: mcmaddy on 01 September 2015, 09:37
Are you connecting them to the cigarette lighter for power? Some people have previously complained about either the 12v sockets and or the units going into the sockets.
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 01 September 2015, 09:50
Are you connecting them to the cigarette lighter for power? Some people have previously complained about either the 12v sockets and or the units going into the sockets.

Yes powered from the sockets, on further investigation it would appear that the loss of gps nav is within the firsts 10 - 12 mins of driving when the camera's are first powered and warming up.  After that it settles down so its definitely pointing to the cams at the moment or perhaps the usb cables are poorly shielded?

If it's the cams warming up then I could make the 12v sockets permanent live so the cams stay warm but just concerned about main batt drain of the car?  The cams have super capacitors fitted so no risk of an internal battery meltdown.  Starting to add up a little now hopefully.

Thanks again
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 02 September 2015, 09:25
Ok with all dash cams & iphone disconnected from 12v supply I still have the issue 8-10 mins into every journey.  However this morning I was able to capture the whole issue which appears to be a possible gps issue or perhaps the pro nav unit is playing up.  The problem now happens everytime you use the nav for the first time of the day or after a 3hr stop.  It starts with a perfect location but then goes off course after 10 mins approx perhaps as the unit warms up?  After its little off course issue it completely settles down for the remainder of the trip regardless of travelling time & any short stop.  However anything over a 3hr stop when the car is off (cooling down), a restart to travel starts the whole issue again :angry:

See below

(http://i1240.photobucket.com/albums/gg497/bondwithme/Mobile%20Uploads/50058A80-F3BA-491D-B72F-7A81F142BC49_zpsgfqeucyd.jpg) (http://s1240.photobucket.com/user/bondwithme/media/Mobile%20Uploads/50058A80-F3BA-491D-B72F-7A81F142BC49_zpsgfqeucyd.jpg.html)

The gold star (Lodge Rd) is the correct position from my iphone nav & where I stopped, the red pin is where the VW nav says I am :whistle:

(http://i1240.photobucket.com/albums/gg497/bondwithme/Map_zpsdlgids0t.jpg) (http://s1240.photobucket.com/user/bondwithme/media/Map_zpsdlgids0t.jpg.html)

Title: Re: Sat Nav-Slow to track
Post by: fredgroves on 02 September 2015, 14:57
If when you are out and about away from home, you hard reboot the navpro (holding down the power button), do you get the same problem after the reboot?
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 02 September 2015, 15:01
If when you are out and about away from home, you hard reboot the navpro (holding down the power button), do you get the same problem after the reboot?

Yes tried that no change unfortunately
Title: Re: Sat Nav-Slow to track
Post by: fredgroves on 02 September 2015, 15:03
No, I meant if you restart the unit, can you replicate (from a distant location far from home) the "going mad after 8-10 minutes" thing?
Title: Re: Sat Nav-Slow to track
Post by: Optimus prime on 02 September 2015, 15:08
No, I meant if you restart the unit, can you replicate (from a distant location far from home) the "going mad after 8-10 minutes" thing?

Ah got you not tried it but will do

Thanks