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elusive MOST fault - new ideas needed
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Mav 90
 


Member Since: 10 Jul 2014
Location: Essex
Posts: 103

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Johnny Oxford wrote:
been doing the MOST loop tests today - quick question, should the red light be flashing or constant when you disconnect the most plugs from the various modules? Mine is flashing.

I dont think I have had any joy. I ran a test with the DAB totally disconnected and looped out and I still had the dreaded loss of connection and audio for a few seconds after just a short drive.

After all Ive read I am starting to think there is an internal problem with some of the head units, and LR probably know about it but dont want to admit it.


Mine flash/blink. Not that my car is a good basis for comparison at the moment!
 1974 S111 SWB 200di conversion, rag top, bronze green. Known as Munch
2004 pre-production D3 V8 HSE Tonga green, gone but buy back option!
2001 D2 4.0 V8 ES premium Epsom green - gone, but only round the corner!
1961 S11 SWB marine blue rag top - gone but not forgotten
2000 D2 4.0 V8 ES premium black - gone but not forgotten
1988 RR classic 3.5 V8 green - gone and nearly forgotten
1976 S111 LWB 2.25 diesel truck cab various shades of bronze green - gone and most definitely forgotten 
 
Post #221122816th Feb 2021 1:54 pm
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Johnny Oxford
 


Member Since: 14 Dec 2014
Location: Chinnor
Posts: 514

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

just came across these guys, about 45 mins from me, might give them a call if it worsens but I doubt they will be very cheap - TBH at the moment I can live with mine, but I have a feeling it may get worse and become unusable.

https://www.turnermechatronics.com/range-r...stics.html

anyone used them?
 2014 D4 HSE Facelift Corris Grey

Previous :

Discovery Sport SE (awful)
56 plate D3 HSE TDV6 Zermatt Silver
Defender 90 200tdi 
 
Post #221123216th Feb 2021 2:04 pm
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Johnny Oxford
 


Member Since: 14 Dec 2014
Location: Chinnor
Posts: 514

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

this is interesting - a Range Rover forum user in the US solved a similar problem - turned out to be a faulty key?

https://www.rangerovers.net/threads/if-you...on.271866/
 2014 D4 HSE Facelift Corris Grey

Previous :

Discovery Sport SE (awful)
56 plate D3 HSE TDV6 Zermatt Silver
Defender 90 200tdi 
 
Post #221127416th Feb 2021 5:20 pm
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Mav 90
 


Member Since: 10 Jul 2014
Location: Essex
Posts: 103

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

SOLVED IT!

It was the amp. replaced with a 2nd hand unit and all perfect and back to normal.

Lesson is that whilst you can loop it out of the system there is clearly something else needed from the amp to power up the Nav, RSE, Bluetooth and audio to make a difference. this maybe specific to the premium amp/meridian system but either way, just looping it out of the system didn't help or change anything.

Hope the experience helps others in the future.
 1974 S111 SWB 200di conversion, rag top, bronze green. Known as Munch
2004 pre-production D3 V8 HSE Tonga green, gone but buy back option!
2001 D2 4.0 V8 ES premium Epsom green - gone, but only round the corner!
1961 S11 SWB marine blue rag top - gone but not forgotten
2000 D2 4.0 V8 ES premium black - gone but not forgotten
1988 RR classic 3.5 V8 green - gone and nearly forgotten
1976 S111 LWB 2.25 diesel truck cab various shades of bronze green - gone and most definitely forgotten 
 
Post #221307123rd Feb 2021 12:23 pm
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Johnny Oxford
 


Member Since: 14 Dec 2014
Location: Chinnor
Posts: 514

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

happy to hear that mate, don't think your problem was quite the same as mine but worth knowing.

Do you still have the nackered amp?
 2014 D4 HSE Facelift Corris Grey

Previous :

Discovery Sport SE (awful)
56 plate D3 HSE TDV6 Zermatt Silver
Defender 90 200tdi 
 
Post #221308323rd Feb 2021 12:45 pm
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Mav 90
 


Member Since: 10 Jul 2014
Location: Essex
Posts: 103

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Yes. Would be nice to crack it open and see if the fault can be found/repaired as they are pretty expensive. I wouldn't know what I am looking at myself though.
 1974 S111 SWB 200di conversion, rag top, bronze green. Known as Munch
2004 pre-production D3 V8 HSE Tonga green, gone but buy back option!
2001 D2 4.0 V8 ES premium Epsom green - gone, but only round the corner!
1961 S11 SWB marine blue rag top - gone but not forgotten
2000 D2 4.0 V8 ES premium black - gone but not forgotten
1988 RR classic 3.5 V8 green - gone and nearly forgotten
1976 S111 LWB 2.25 diesel truck cab various shades of bronze green - gone and most definitely forgotten 
 
Post #221312823rd Feb 2021 3:25 pm
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Johnny Oxford
 


Member Since: 14 Dec 2014
Location: Chinnor
Posts: 514

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

would you mind posting a pic or part number from it, I think there are a few types, I do have similar problems so I may be tempted to buy one from a breakers if mine is the same as yours as it could be a common problem. Many thanks
 2014 D4 HSE Facelift Corris Grey

Previous :

Discovery Sport SE (awful)
56 plate D3 HSE TDV6 Zermatt Silver
Defender 90 200tdi 
 
Post #221316623rd Feb 2021 5:29 pm
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Mav 90
 


Member Since: 10 Jul 2014
Location: Essex
Posts: 103

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

I would bet your amp is different to mine(I did post a picture of it previously). when I was researching them there are loads of different spec options. mine of course was the rare expensive one... Rolling Eyes

My advice is to take your panel off and check your part number on the sticker. its obvious and faces you - easy to see. it will be colour coded too. mine was yellow with Prem in the yellow box(premium).

Then search on Ebay using the part number and don't enter Land rover or discovery in the search field. mine was DX23-19C164-BA. this will also show items from Jaguar which are the same. I only had 3 to choose from which were correct. Other models seemed to be plentiful though and cheaper...
 1974 S111 SWB 200di conversion, rag top, bronze green. Known as Munch
2004 pre-production D3 V8 HSE Tonga green, gone but buy back option!
2001 D2 4.0 V8 ES premium Epsom green - gone, but only round the corner!
1961 S11 SWB marine blue rag top - gone but not forgotten
2000 D2 4.0 V8 ES premium black - gone but not forgotten
1988 RR classic 3.5 V8 green - gone and nearly forgotten
1976 S111 LWB 2.25 diesel truck cab various shades of bronze green - gone and most definitely forgotten 
 
Post #221317623rd Feb 2021 6:04 pm
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