luke5

New Member
:eek: Hi, I'm new to this and indeed distraught.
Over the past week I have lost all function from the Touch Screen Centre Console, nothing is working only the land Rover logo comes on, and the AV button just flashes.
Just came back from the main dealers, distraught at a repair price tag of £3k before vat !!!!!!!!. suggesting its corroded wiring and the Sat-Nav DVD, Telephone, AMP hardware, all need replaced, and this is all before they establish the cause of the problem.

I am totally lost and would like to know if anyone has experienced this problem before, and would welcome any suggestions.

The Vehicle is an L322 2004/05 3.0 with touch screen sat/nav - tv.

Regards
 
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Sorted.
 
Although I dont have the answer to your problem, I can give an insight into the workings of the main dealer. When presented with an unknown problem they default to most expensive option, then if they fix it cheaper than quoted they get a happy customer. If however they have to replace all the bits to find the fault then they have fixed it as promised for the price specified, so again happy customer. The problem is that although there are some top technitions out there, these are becoming far a few between as constant pressure on performance wears down the few remaining good techs and they leave the trade or setup there own specialists companies. Those who are left have been to the training centres and got the qualifications but sadly lack the experience that makes a good tech. Therfore that is why they will replace parts until the job is done, without any real detective work being done. Your best bet is to find a specialist independent, here you will find the old school tech who has started up on his own because he has become fed up with the way the main dealer has treated his customers. They will do their best to find the problem and then repair it. Or get yourself a Faultmate and get in there yourself.
 
Although I dont have the answer to your problem, I can give an insight into the workings of the main dealer. When presented with an unknown problem they default to most expensive option, then if they fix it cheaper than quoted they get a happy customer. If however they have to replace all the bits to find the fault then they have fixed it as promised for the price specified, so again happy customer. The problem is that although there are some top technitions out there, these are becoming far a few between as constant pressure on performance wears down the few remaining good techs and they leave the trade or setup there own specialists companies. Those who are left have been to the training centres and got the qualifications but sadly lack the experience that makes a good tech. Therfore that is why they will replace parts until the job is done, without any real detective work being done. Your best bet is to find a specialist independent, here you will find the old school tech who has started up on his own because he has become fed up with the way the main dealer has treated his customers. They will do their best to find the problem and then repair it. Or get yourself a Faultmate and get in there yourself.



Agreed - Technicians are few and far between these days - they all just seem to be Fitters...
 
Luke

I've just had issues with my battery draining on my L322 and it was due to water getting into the sat nav unit. Apparently water can leak onto the units and cause short circuits/damage from faulty boot seals making the SAT NAV stay on and hence drain battery.

My car was thankfully fixed for £275 with a new sat nav unit off ebay with 12 months warranty. I think your player maybe different (DVD based) and I'm only guessing its in the same place on the left hand side of the boot but check for signs of water ingress.

Whilst my Sat Nav unit was out I lost a few functions on the main screen but again mine is the slightly early BMW based unit

Sometimes cheaper and more useful going to a reputable specialist rather than main dealer.
 
I have the same problem! I also have a 2005 Vogue TD6. The screen just shows the Land Rover symbol and the on/off just keeps flashing red. The stereo doesn't work and the battery does seem to drain easily with the engine not running. Besides the can of petrol and match, are there any more suggestions please?
 
From 2005, the entire infotainment system in the L322 uses the later MOST (Media Oriented System Transport) Fibre optic bus. Same as on Disco 3 and Range Rover sports. In fact exactly the same ECU's programmed with exactly the same software.

It is quite advanced and can scare those never having worked with it much, and diagnosing problems with it requires a somewhat different approach to normal.

It's basically a loop that goes in and out of all the Infotainment ECU's.
Each ECU gets the light from the preceeding one on its input and then re emits it on its output. If there is a break in the loop or one ECU looses power or stops working for any reason, the whole bus goes down.

When that happens you get the common symptoms you describe.

Here is a picture of part of the MOST Bus loom
CIMG3073A.jpg
[/IMG]


I recently fixed a 2005 L322 with the MOST Bus down, turns out the telephone module had water ingress and was not repeating the light.
I fitted a new one, but later cleaned the old one up and got it working again and actually retro fitted it in my own Disco 3.

If you unplug the MOST connector from an ECU, you should see light at the end of the input terminal of the cable, They are arrowed for direction. For a split second you might also see light being emmitted from the MOST connector of the ECU. Also if you hover the connector over the socket close enough, sufficient light will reach the ECU's reciever for it to fire up its emmitter.

If you dont see light in the cable, the problem is before that, if you dont get light out of the ECU then its that ECU that is not working as it should and you need to check its power feeds fuses etc.

There is an LR tool availiable called a MOST Prism to aid in MOST bus testing, its basically a socket with a loop of cable to by pass each ECU in turn.

most%20prism.JPG
[/IMG]

Hope this helps.
 
Sorry to bring this one up again, I have a 2006 RR and the system is completly dead

I have taken to my local garage who used a diagnostic tool, which came up with the fault " no power to unit "

I have checked the obvious things like fuses, and i am also getting power to the socket that plugs into the back of the unit

Does anyone know if there is an internal fuse in the unit itself, or any other ideas

Cheers Bob
 
Bob
I dunno what garage you used or what Diagnostic tool they used, but i am sorry to say, it sure sounds like total crap to me. In fifteen years of specialising in deleloping Land Rover equipment i have never come across such a stupid and non sensical faults being provided.
It's like the morgue telling you that Michel Jackson "said" he was dead.

Can you ask them what equipment they used?

Under the midddle part of the dash unit is an ECU called the Audio Control unit.
It is the gateway between the CAN bus and the MOST bus. On Disco 3 and RRS's it is literally strapped on the back of the head unit.

It has its own diagnostic capability and i cabut n't vouch for others we provide a software module specifically for that along with all the other (up to 30) on bord systems.
If it has no power, it will not respond to any attempts to communicate diagnostically with it at all. you may as well be plugged into a washing machine as far as the diagnostic equipment is concerened. It is also the start of the MOST Bus.
 
I am including solutions here to my 2003 L322 battery drain problem as it may help someone. Original symptoms were also a blank screen on the video display (full DSP system with MK 3 sat nav as per Vogue but my vehicle is an 2003 HSE).

The car had suffered what I thought was water ingress in the left had boot compartment, previous owner had this problem.

All connectors in the boot compartment were cleaned with moisture repellent. I noticed a missing power pin on DSP amp due to very bad corrosion.
Checked for leaks with hose on the outside of the body and found none. Fitted new battery.

System started working and all was operative except no sound, so I jumpered the DSP power pin with heavy duty wire and it then worked fine. Major achievement.

One remaining problem was the battery draining over several days. I thought to monitor the voltage which dropped to 11.6V. I felt underneath the sat nav one day actually looking for damp and it felt warm so I disconnected it and the battery drain stopped. Rest of system still worked after removal.

I stripped the sat nav down and found very bad corrosion on the circuit board, which I reckon was salt water. Previous owner frequently parked near the sea! - Well how did it get in there?

The sat nav is probably beyond repair as the copper and solder are eroded but I will give it a try since the only fault was battery drain - and I am good with the soldering iron. Otherwise a replacement will be sought, perhaps an excuse to upgrade to a MK 4.

So in conclusion and having trawled the internet for help it would appear that entertainment system faults and battery drain are very likely to be associated with wet or corroded electronics in the boot.

Paul.
 
I now have exactly the same problem as Luke5! Nothing but a Landrover symbol and flashing light.

Also have a small amount of water in the boot.

Did anyone figure out the answer to this? Or which bit in the boot I need to dry out?

Any help much appreciated!
 
Doh! Local Land Rover specialist says all :doh: the modules in the boot have got wet and corroded. £5k to fix it all apparently!

Looks like I'll be whistling to myself for entertainment.
 
Sorry to bring this one up again, I have a 2006 RR and the system is completly dead

I have taken to my local garage who used a diagnostic tool, which came up with the fault " no power to unit "

I have checked the obvious things like fuses, and i am also getting power to the socket that plugs into the back of the unit

Does anyone know if there is an internal fuse in the unit itself, or any other ideas

Cheers Bob

Welcome to the forum! there are many different ECU's that make up the entertainment system in a range rover because your car uses the MOST fibre network if anyone of these ECU's stops working, everything stops working..... you need to check each ECU to find which one is not repeating the signal. Read BBS's post above for more info

Matt
 
Does anyone know if the MOST prism can be used as a permanent solution, to by pass the faulty ecus? I dont really want to spend £500 to replace the telephone ecu when I never actually use it. If possible, anyone know where to get one from?
 
.
All connectors in the boot compartment were cleaned with moisture repellent. I noticed a missing power pin on DSP amp due to very bad corrosion.
Checked for leaks with hose on the outside of the body and found none. Fitted new battery.
.
System started working and all was operative except no sound, so I jumpered the DSP power pin with heavy duty wire and it then worked fine. Major achievement.
.

I got the same on my 2003. A DSP power pin has snapped from heavy corrosion so I will look at adding a wire from inside. It seems my Mk3 nav went bad as well from the moisture.

How is the pin numbering on the 15 pin DSP heavy gauge socket ?


15-pin.gif


Looking at that picture as seen from the DSP, is the numbering going

1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 ??

The pin layout is

pins.png
 
Last edited:
My assuption on the numbering was correct.
Pin 8 in the DSP 15-pin connector was broken off. This happens because the positive 12V pin is prone to corrosion due to electrical phenomenas in relation to moisture. The pin then binds in the connector and when the owner attempts to pull the connector the pin can break, as happened here.

I removed the DSP, opened it and installed a bypass wire for +12V,
described here:
http://www.landyzone.co.uk/lz/1468257-post18.html
Now audio is back.
 
Does anyone know if the MOST prism can be used as a permanent solution, to by pass the faulty ecus? I dont really want to spend £500 to replace the telephone ecu when I never actually use it. If possible, anyone know where to get one from?

You can buy fibre optic cable and fittings from the likes of Farnell and RS components and make up your own bypass if you cannot get the proper one at a sensible price. I see no reason why you should not permanently bypass the duff unit, if it works for test purposes it will work all the time unless the ECU controlling it all detects the missing unit and shuts the system down. BBS guy might know the answer to that.:)
 

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