MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Sat Nav and Car Audio => Topic started by: micaerin on October 13, 2011, 06:06:24 pm

Title: RNS 510 GPS problems
Post by: micaerin on October 13, 2011, 06:06:24 pm

Have been running Josi 2720 firmware with V7 maps for a long time now(since V7 came out), with no problems at all. but since returning from a holiday and the car not being used for 3 weeks, the GPS seems to be miles off. I've rebooted unit but it still struggles to know where i am.
Could the GPS Antenna be faulty or do you guys have any other ideas i can try.
Thanks in advance

Title: Re: RNS 510 GPS problems
Post by: Horatio on October 13, 2011, 06:47:10 pm

Does the HU download GPS corrections, like you can do with TomTom? My TomTom used to do this alot.

Title: Re: RNS 510 GPS problems
Post by: micaerin on October 13, 2011, 06:53:22 pm

Quote from: Horatio on October 13, 2011, 06:47:10 pm

Does the HU download GPS corrections, like you can do with TomTom? My TomTom used to do this alot.

not that I'm aware of

Title: Re: RNS 510 GPS problems
Post by: stealthwolf on October 13, 2011, 06:57:12 pm

When in map mode, press map button again to bring up the extra window. Select gps viewer and it willywll you how many satellites it has locked on to. Needs a minimum of 5 I think for a good lock on. Once it's found them, it should save them.

Does occasionally happen so not to worry.

Title: Re: RNS 510 GPS problems
Post by: LouCyffer on October 13, 2011, 08:13:47 pm

The satellites move in relation to the earth, and so they occupy different parts of the sky over time. If the unit hasn't been used for a while, it will not look in the right part of the sky to find the satellites quickly. Tom Tom units download a 'quick fix' once a week to overcome this.

Don't worry, the unit will, once it's had a good look at the sky & found enough GPS birds, will be back to quickly fixing position again.

Title: Re: RNS 510 GPS problems
Post by: micaerin on October 13, 2011, 08:29:38 pm

I took a drive for over an hour and it could not locate, and the past week it still has not rectified the issue.
I hope you guys are right, thanks for the replies :happy2:

Title: Re: RNS 510 GPS problems
Post by: micaerin on October 20, 2011, 10:50:36 pm

Still taking ages to find itself, been using the car regularly for 3 weeks now, it used to be virtually instant , but now can take at least 20 mins to nearly an hour, which really isn't much good, would it be worth getting another GPS receiver(do they go wrong), or re-install firmware or maps?

Title: Re: RNS 510 GPS problems
Post by: stealthwolf on October 20, 2011, 10:53:51 pm

How many satellites does it see initially?

Title: Re: RNS 510 GPS problems
Post by: micaerin on October 20, 2011, 11:09:56 pm

it varies from 0/12 1/9 then it can get 5/9 and then loose the signal. i just can't see why it can go so wrong when it was working perfect for months.

Title: Re: RNS 510 GPS problems
Post by: stealthwolf on October 20, 2011, 11:44:31 pm

Might be the GPS antenna in that case. Once mine has more than 5 satellites, it's locked on and stays locked on.

Look for a FAKRA connection one for the replacement.

Title: Re: RNS 510 GPS problems
Post by: micaerin on October 20, 2011, 11:48:49 pm

Thanks, ill give that a go :happy2: