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Old 14th April 2019, 08:31   #1
75er
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Default No satellite signal?

I've a Tourer with highline and the Sat Nav has never worked since I've had the car. The problem being the Sat Nav doesn't seem to pick up the satellite signal. The head unit shows in the little window on the screen that no satellites are being picked up. I tried replaced the original Rover drive with a Mk4 DVD unit which I know works fine, but still nothing. The head unit just thinks its in the location where the DVD was last used. I assumed it must be the sharks fin. Yesterday Cable Tie and I took the heading down and connected up and earthed another sharks fin, but this didn't make any difference, still no signal (incidentally the original sharks fin only had one cable from it, I thought they all had two?). I guess it could be that both sharks fins are faulty and that's why it's not working, but if anyone has any other ideas I'd be grateful for suggestions. Thanks
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Old 14th April 2019, 15:24   #2
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Found a helpful thread by Reebs on how to access the service menu to look in more detail at the satellite settings by selecting Set from the screen and then pressing and holding the Menu button for 8 seconds. Tried this but it won't put me into the service menu, guess there must be a fault with the head unit, all other functions on the head unit seem to work okay. Case of swoping the head unit and then going from there I guess.
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Old 14th April 2019, 17:47   #3
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Now changed the unit for widescreen one and still can't get the service menu...
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Old 15th April 2019, 10:26   #4
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I changed the ECU would that have an effect on not being able to get the service menu from the hiline screen
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Old 16th April 2019, 22:39   #5
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Probably nothing to do with it but, have you seen this?
https://www.tomtom.com/en_gb/updates/
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Old 16th April 2019, 23:18   #6
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Thanks Paul, not seen that, bus guess if it was that it would affect all R&% owners with original sat nav. Decided to get a new sharks fin and see if that solves the problem. Still mystified as to why I can't access the service menu.
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Old 17th April 2019, 07:18   #7
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Hi Chris,

Just to be sure, you have gone in to the settings menu on the high line screen first by selecting SET, then from there you’ve pressed and held down the MENU button for a good 10 - 15 seconds and it hasn’t changed to the service mode screen?



It should do this on all high line units. On tourers it always seems to be the sharks fin that is the problem, not so on the saloon which has the antenna under the parcel shelf and so is protected from the elements.

The only other thing I can think of is that the connector on the antenna cable going to the back of the nav computer is damaged and so not making contact. I’ve got this on one of my cars at the moment, it’s the end with the 90 degree silver plug on it. I need to either cut the end off and splice it to a donor plug or replace the entire cable run to the parcel shelf.
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