No sound from radio or sound system after sunroof leak into passenger footwell

[bbyer]

If you pull it off you will see around 5 clumps of earth wires all attached under small nuts. If you undo each of these nuts I found small amounts of rust forming under the wire contacts.i removed the rust. Reattached them and sprayed lacquer and my problems now gone.

Grounding again - this is so Land Rover.

The fix costs nothing but time - and eons of it.

I find that many of the solutions to near impossible to find problems cost only time. This is the value of these forums - that others who have spent the time let the others know where the problem is and the fix.

Well done, and much appreciated.

 

[dr si]

Is there a chance that water could have gotten into the fuse box in the front passenger glove box area. Check our fuses F52 and 53 as well as F57 & 58. You'll need a flashlight and a lot of flexibility

Hi I have checked the fuses are fine, many thanks Dr Si

 

[dr si]

I think your post got lost, so again, if I understand the question, your audio system does not make any noise and you think it has something to do with a ground?

Exactly what Land Rover do you have? It sounds like a 2005 Discovery ?? HSE but without the upscale Harmon Kardon audio system that has the under the passenger seat located amplifier that is fed via the fibre optic system?

Do you have a Bluetooth system and does it still work?

I often have silence in my audio system after such as a battery changeout but the Bluetooth still works and speaks etc so I know the radio unit is still powered; also the digital window still illuminates. Does the window on yours still light up?

My fix is what I call a hard reset per below. It costs nothing other than time; wrecks nothing and sometimes fixes the sound system.

Hard Reset Instructions

In brief, to start the hard-reset process, open the hood but close all doors and let your 3 go to sleep - no radio display etc and no key in the ignition. This will take a couple of minutes and do not open any doors until the reset is completed. (I find that it is often a good idea to have the driver’s door window rolled down and the key in one’s pocket whenever fooling about the vehicle.)


Also, when I play with a car battery, I remove any rings I have from my fingers, also my watch. Have the car keys in your pocket.

Disconnect the ground battery terminal from the main starting battery.
Disconnect the positive battery terminal from the main starting battery.


The reason for this order is if a wrench or loose battery cable ends grounds to the body, no arcing or other bad things happen.


(I assume that you only have one battery in your 3. If not, disconnect the others as well and leave them disconnected until after all is done.) I have the Traxide dual battery system installed.


Connect the negative cable end to the positive cable end. (NOT to the battery.) To do this, you will need a short length, (a foot or so), of light gauge, (14 to 18 gauge AWG, insulated stranded copper), wire to span between the battery cable ends as there is not enough slack in the positive and negative battery cables for the ends to be able to touch each other.

Hold all together for about a minute or more, (suggest at least two minutes), as you are discharging memory modules within the engine computer and elsewhere. Then it is suggested you then just let all sit disconnected for say ten minutes, (minimum five minutes), prior to commencing to put the battery cable ends back on the battery posts per the following order.

Reattach positive terminal to the main starting battery positive post.

Reattach negative terminal to the main starting battery negative post.

Start engine and hopefully none or at least fewer warning lights and the radio when turned on plays music rather than being silent.
Reset time on the radio - note that the station presets are still there as not everything is erased. Nothing much else needs resetting either.

You can also now connect up the other batteries if you have a multiple battery setup.

This is a link to a thread in disco3 re the hard reset procedure. http://bit.ly/14WXXR1


http://www.disco3.co.uk/forum/topic19547.html


This is a link to a thread on Disco3Club re the hard reset procedure.

http://www.disco3club.co.uk/phpbb/viewtopic.php?f=67&t=3374

Hi many thanks for the detailed reply:-

1/ Disco 3 05 DHSE. This one does not have harmon kardon amplifier under the passenger seat (Sat nav dvd player there instead)
2/ Bluetooth OK
3/ Everything else OK and optical link checked all Ok
4/ Display and Nav + 4WD info works perfectly
5/ I have done both Soft band Hard rest several times with no cure still no sound, hence prob wire splice prob ( but what colour is the wire splice ???) or software update?

best Dr Si

 

[bbyer]

This is a link to a 12 page pdf that is the wiring diagram for both the high spec and low spec audio systems. The lines depicting the wires are appropriately coloured.

https://www.disco3.co.uk/gallery/displayimage.php?album=34462&pos=1

Below is a link to a bunch of pdf's including the above related to all aspects of the Audio and Nav Bluetooth systems including the fibre optic MOST wiring.

https://www.disco3.co.uk/gallery/thumbnails.php?album=34462

 

[dr si]

Thanks Ian

I will give iit ago this w/e fingers crossed !

 

[dr si]

Thanks BBuyer thats very helpful cheers

 

[dr si]

Thanks to all for the advice