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SOLVED:Lost Sat Nav, Phone & Radio:Told Amp Gone in 2015 LR4
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4
SOLVED:Lost Sat Nav, Phone & Radio:Told Amp Gone in 2015 LR4

Hi all

Control screen grayed out for some functions but 2nd screen showed it is in fact the amp that has gone.

It appears to be part no. LR059979 so looking for 2nd hand one (Replacement circa £900) but also anybody replaced this previously and know is it located below the driver seat or in the boot / trunk area ?

Local LR shop will likely have to fit / code but seeing if anybody else has replaced and how that went.

Cheers 

Last edited by TtheArab on 18th Sep 2022 3:12 pm. Edited 2 times in total 
Post #23069638th Sep 2022 5:56 pm
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Green Land Rover
 


Member Since: 21 Oct 2017
Location: Stourbridge
Posts: 408

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Aintree GreenDiscovery 4

Looks like it's behind one of the boot panels:

https://new.lrcat.com/#!/12728/53806/54376/4304/54440

Is this any good on eBay? : https://www.ebay.co.uk/itm/144690686983

I changed the amp in my Freelander and no coding was required. It is 15 year old technology so things may have moved on Laughing

Good luck with your quest Thumbs Up Discovery 4 HSE - Aintree Green
Freelander 2 TD4 SE Automatic - Tonga Green
Defender XS - Tonga Green - Gone Now
Freelander 1 Td4 ES Manual - Epsom Green - Gone Now
Freelander 1 Td4 Kalahari SE - Epsom Green - Gone Now
Freelander 1 XEi - Epsom Green - Gone Now

www.greenlandrover.uk

  
Post #23069978th Sep 2022 9:39 pm
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

Ok so been to local specialist who stated the amp was the cause.

So far then :

1. Screen replaced with known working unit - not the issue
2. Amp replaced with known working unit - not the issue

The red light on the fibre optic is on so there is comms to the unit.

Any bright ideas for next moves ????  
Post #230789117th Sep 2022 11:50 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Time for proper diag, instead of swapping out parts Thumbs Up My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #230791817th Sep 2022 5:03 pm
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

Which is why it went to local LR specialist for 2 weeks who diagnosed the amp…

Next….  
Post #230791917th Sep 2022 5:21 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Loop out each module in turn, to see what brings the functions back to life My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #230794417th Sep 2022 9:27 pm
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

Aren’t there 16 modules ?

Do you have IID by any chance Mikey ?  
Post #230795117th Sep 2022 10:59 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Not in the infotainment network

I have an IID, Autologic, SDD and Pathfinder Wink My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #230797518th Sep 2022 6:33 am
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

Found this handy little video. As I feared looks like taking most of the trim apart front and back. Good to see this as well as the tech bulletin around troubleshooting the MOST ring being the way this should be tackled.



https://static.nhtsa.gov/odi/tsbs/2014/SB-10103363-9340.pdf  
Post #230798018th Sep 2022 7:36 am
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TtheArab
 


Member Since: 01 Feb 2015
Location: Auchterarder
Posts: 18

Scotland 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

So I tested the DAB / Sat Nav for light emitting to carry along fibre optic cable as well as input cable carrying light. Both a yes.

Looked at the amp and no red light emitting then put simple meter onto the power input into amp as there is no way I could have 2 dead amps.... I don't....

Downloaded the full manual and wiring diagram to trace the power for the amp back to Fuse Link 11 in the engine compartment and it was blown. Used another from a less important system for now (will get new FL tomorrow) and everything pops back to life.

Seriously spitting feathers that supposed Land Rover specialist missed something so simple as did I.

Lesson learnt - now I have a spare High Line Display Unit and amp.... lol

I do though once again have a functioning Disco Very Happy  
Post #230800418th Sep 2022 3:11 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4400

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Good work. Always the least expected fault! It's called 'black box syndrome'. People always think it's the black box because it's a mystery what happens inside! Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone  
Post #230800518th Sep 2022 3:14 pm
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Flatlander
 


Member Since: 20 Jul 2015
Location: Here
Posts: 575

United Kingdom 

You should be asking 'why did the fuse blow?'. that will be the real diagnosis.  
Post #230800918th Sep 2022 5:02 pm
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