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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black
Most loop

Hi am i correct in thinking that the head unit is the unit that actually sends out the red light of the most circuit Thumbs Up

Post #539533 Sat Oct 28 2017 2:14pm
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GodivaNige



Member Since: 14 May 2016
Location: Warwickshire
Posts: 230

England 2009 Range Rover Sport TDV8 HSE Buckingham Blue

Yes, the head unit is the master Thumbs Up

Post #539535 Sat Oct 28 2017 3:14pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

So i have no red light does this mean i have a head unit problem Crying or Very sad

Post #539536 Sat Oct 28 2017 3:17pm
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GodivaNige



Member Since: 14 May 2016
Location: Warwickshire
Posts: 230

England 2009 Range Rover Sport TDV8 HSE Buckingham Blue

Have you been having other problems? Any DTC faults logged?
If there is no light output from the IHU then yeah, it’s not looking good for it. Try the usual suspects first, hard reset, MOST diagnostic screen

More info about the system http://media.disco3.co.uk/gallery/albums/u...ration.pdf
It’s a little generic, covering FFRR along with LR3 but the principles in this info are the same for RRS

Post #539539 Sat Oct 28 2017 3:28pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

No other issues just swapped the wires on my D4 screen yesterday as had poor radio reception then noticed i had no red light now nothing no radio no sat nav nothing but everything else is ok Thumbs Up

Post #539542 Sat Oct 28 2017 3:40pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

Crying or Very sad

Post #539595 Sun Oct 29 2017 1:33pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

Would anyone know how to test the system when i dont have power to the head unit so cant turn it on to test the most ring Thumbs Up

Post #539599 Sun Oct 29 2017 2:32pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

Does anyone know if there is a fuse inside the head unit as i have 12 volts going in but nothing works on the head unit or somewhere i can get it tested having read the pdf Godivanige Thumbs Up

Post #539663 Mon Oct 30 2017 8:36am
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GodivaNige



Member Since: 14 May 2016
Location: Warwickshire
Posts: 230

England 2009 Range Rover Sport TDV8 HSE Buckingham Blue

I know my local indy has the equipment to test and repair problems with the MOST loop, but they're nowhere near you. Venture 4x4 in Warwickshire. They've sorted out a few RRS's and Discos in the past according to their FB page.

As for fuses within the head unit, no idea. I had loads of problems with mine doing very strange things, ended up buying a replacement head unit via eBay. Was very lucky in that I got a factory refurbished part that had never been fitted for £370 when they should be nearer £900. Came with a new fascia and new knobs, looked brand new and worked like a charm.

Post #539665 Mon Oct 30 2017 8:43am
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

thanks have seen a few on the bay dont know weather to buy a cheapy to make sure it is that or to try and find someone who knows something about them and get it tested to confirm as i have power to the unit but nothing at all lights up or works and no light coming out of head unit

Post #539668 Mon Oct 30 2017 8:51am
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scarey



Member Since: 07 Jan 2011
Location: in the cloud
Posts: 160

this is from the FFRR's wiki page and might [or not] help you,

http://www.fullfatrr.com/gallery/albums/us...ration.pdf

Post #539678 Mon Oct 30 2017 10:25am
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Andy K



Member Since: 18 Sep 2015
Location: GL
Posts: 1449

England 2005 Range Rover Sport TDV6 HSE Rimini Red

If you have 12v at the connector, and press the volume button knob the display should come on.

IIRC

no music, but display should be on.

black ground wire could be at fault

Post #539686 Mon Oct 30 2017 12:09pm
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geoffsnook



Member Since: 19 Nov 2016
Location: cardiff
Posts: 649

Wales 2005 Range Rover Sport Supercharged HSE Java Black

Thanks everyone just checked continuity of fuses and 43 was knackered so result cheap fix Thumbs Up

Post #539687 Mon Oct 30 2017 12:09pm
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