Satnav not picking up satellites

This unit is the RT4 and RT5 system and is made by Magneti Marelli
Main differences between RT4 & RT5 - RT5 has Bluetooth Hands Free, faster Navigation calculation and on C4 & C4 Picasso only, USB ports and a High-Res screen.

Moderator: GiveMeABreak

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Bandit12
(Donor 2020)
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Satnav not picking up satellites

Post by Bandit12 »

Hi guys,

My satnav has developed a strange fault. It won't/can't pick up sataliites. As a result the map is useless and the car thinks its in a filed near Daventry!
The bottom of the screen usually lists number of satalites as 9 but is currenlty showing zero. I've tried a BSI reset and I've checked connections from aerial to loom above the head lining in the boot but nothing obvious is wrong. Not ried a lexia yet.

Any ideas are appreciated.

Bandit
2002 Citroen C5 2.2Hdi exclusive estate (sadly gone) :(
2009 Citroën C5 X7 2.0 hdi (136bhp) exclusive estate (Oh wow what an upgrade) 8-)
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Paul-R
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Re: Satnav not picking up satellites

Post by Paul-R »

Which satnav? What year is it?
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
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GiveMeABreak
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Re: Satnav not picking up satellites

Post by GiveMeABreak »

This is the RT4 Forum, so one expects it to be an RT4 Paul and if this is your X7 VIN ending 848 Gino, then confirmed.

There are several possibilities.
1) The roof aerial has had water ingress that has corroded the internal connections
2) The aerial connection at the rear of the RT4 or further up the line has become loose or corroded
3) The GPS Tuner / Receiver is faulty inside the RT4

The first thing you need to determine is if it is the aerial or the RT4.
  • Get yourself a cheap GPS aerial with fakra connection off ebay or similar for about a £10.
  • Replace the GPS antenna at the back of the unit with this and place the aerial in a prominent place.
  • Go for a drive - essential! You can't remain stationary as the GPS needs to geolocate itself by locking onto several satellites and it can't do this when the vehicle is not moving. It typically needs 10 minutes to do this.
If after this amount of time there are still zero satellites, then it may be internal. If there are signs of satellites picked up, then you know it's the aerial.
Please Don't PM Me For Technical Help

Marc
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Paul-R
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Joined: 07 May 2009, 16:24
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Re: Satnav not picking up satellites

Post by Paul-R »

GiveMeABreak wrote: 25 May 2022, 11:18 This is the RT4 Forum, so one expects it to be an RT4 Paul ...
I know that but sometimes items are misposted and the information to confirm, or otherwise, isn't in the standard member My Cars box.
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
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Bandit12
(Donor 2020)
Posts: 394
Joined: 23 Apr 2013, 11:35
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Re: Satnav not picking up satellites

Post by Bandit12 »

Hi Guys

Thanks for the replies. Yes its the RT$ out of my 2009 X7. I'll try the suggestions and get back to you.

Many thanks

Gino
2002 Citroen C5 2.2Hdi exclusive estate (sadly gone) :(
2009 Citroën C5 X7 2.0 hdi (136bhp) exclusive estate (Oh wow what an upgrade) 8-)