T

TimeToChill

New Member

• Today at 09:07

• #1

Hi,

After water damage to my end 2004 D3 4.4 V8 (via broken passenger side sunroof drain tube...), I am having to consider sourcing a YQE500300 (BCM/Fusebox Body Control - located in passenger footwell behind glovebox) replacement.

I have a mechanic (25 years LR experience) looking at it and he has not got it started after over a week of diagnostic testing since initially cleaning the BCM, drying it out and getting the car started (not without faults via diagnostic testing...). Car has been completely (...) dried out for 10 days in a borrowed garage (seats out etc). Front drain tube(s) replacement next step...

Does anyone know if the YQE500300 is materially different for the D3 4.4 V8 petrol models than the one supplied for the D3 2.7 Diesel models (seems to be widely available - I cannot seem to source one specific to the D3 4.4 V8 petrol)?

I have not posted in the forums previously - please feel free to refer me to any forum specifically dealing with this - this is bound to have come up previously...

All help welcome.

 

kermit_rr

Very

Full Member

• Today at 09:34

• #2

i'm no expert AT ALL but from what i've learned so far about BCM, its likely the same physical piece of hardware but with a different CCF

 

kermit_rr

Very

Full Member

• Today at 09:37

• #3

a replacement BCM/fusebox will have a different VIN, but i'm led to believe that is not a showstopper. one possibility is to send both off to a cloning company

 

T

TimeToChill

New Member

• Today at 10:34

• #4

Thanks - that is helpful.

My understanding is that you have to change the VIN/virginise the replacement CJB/BCM - thanks for confirming.

I am just concerned about purchasing a replacement BCM/fusebox that might not be compatible with my end-2004 YQE500300. As I have a rare AJ 4.4 V8 petrol, I am wary of potential replacement part issues. Particularly if there were subsequent updates to the BCMs. I currently cannot find a BCM which is specifically labelled as compatible to a 4.4 V8 petrol (all diesels from UK suppliers - unsurprising as so few V8 petrols were sold in the UK market).

To anyone sourcing for this vehicle - numerous parts suppliers cite the D3 AJ V8 4.4 Petrol as 2005-2009. This is incorrect - the first D3 V8s shipped from end 2004, like mine. Cannot confirm if there were earlier D3 V8s prior to the 54 registrations.

Current status is that the BCM has been cleaned and dried out but there are still contact-related corrosion issues to resolve on the way to the next step - (front) sunroof drain tube replacement(s). Car warning lights flash when key turned on - does not start...

 

kermit_rr

Very

Full Member

• Today at 10:45

• #5

TimeToChill said:

I currently cannot find a BCM which is specifically labelled as compatible to a 4.4 V8 petrol

Click to expand...

used examples will be labelled as the car they came from, so if the 4.4 is rare then stands to reason they all show as diesel.
if the part number is the same, it also stands to reason its only the software thats different

but - like i said i'm not an expert and never owned a disco or an ajv8

 

kermit_rr

Very

Full Member

• Today at 10:47

• #6

TimeToChill said:

Current status is that the BCM has been cleaned and dried out but there are still contact-related corrosion issues to resolve on the way to the next step - (front) sunroof drain tube replacement(s). Car warning lights flash when key turned on - does not start...

Click to expand...

can diag connect to the bcm/cjb? can you pull errors from it? what are they? what diag software are you using?

 

sierrafery

Well-Known Member

• Today at 10:55

• #7

As long as it's the same p/n means it must be fully programmable for any vehicle specs which were fitted with that one IMO, any upgrades or mods would come with a p/n supersession, that's how it works

 

T

TimeToChill

New Member

• Today at 12:38

• #8

kermit_rr said:

can diag connect to the bcm/cjb? can you pull errors from it? what are they? what diag software are you using?

Click to expand...

Yes - we are using a specific LR diagnostic kit - the faults are diminishing as we work our way through the corroded contact points. I have not specifically listed the faults here as I wanted to address any potential issues with any replacement BCM option. They are gradually diminishing as we try to pinpoint any key underlying faults. With BCM replacement looking like one likely solution...

 

Last edited: Today at 14:17

T

TimeToChill

New Member

• Today at 12:48

• #9

sierrafery said:

As long as it's the same p/n means it must be fully programmable for any vehicle specs which were fitted with that one IMO, any upgrades or mods would come with a p/n supersession, that's how it works

Click to expand...

Thanks for that useful feedback - and, yes - that makes perfect sense. I have heard of petrol vs diesel variants which does not make much sense based on the p/n.

This all started with a garage ("Land Rover Specialist") trying to source the engine bay module - not the (faulty) passenger footwell module - in error - and unable to source anything for some time. They then failed to re-connect the passenger footwell BCM correctly (pins not connected...) and I had them re-deliver the car back home. They claimed that there could be different BCMs for petrol/diesel models (with the same p/n). Which I find strange - modify the part - re-name... surely...?

 

V

Vihtavouri

New Member

• Today at 14:33

• #10

Hi, I'm following this one since I am currently facing in a deadend on my 07 4.4 LR3, I was able to diagnose the no start by plugging the Instrument Cluster firmly. The issue I now face is that my CJB only have a few fuses with 12V while the rest is 0V. I have experienced duplicating an ECU with a TDV6 D4, would it have the same procedure on reprogramming the CJB?

 

T

TimeToChill

New Member

• Today at 16:49

• #11

Hi,
These 2 threads might be useful to you - worth a look - pls don't shoot the messenger etc...:

DISCO3.CO.UK - View topic - BCM/CJB died after attempted flash. ****FIXED****

Community site dedicated to Discovery 3, 4 LR3 and LR4 Owners and Enthusiasts. Totally free to join - message boards, galleries, wiki, off road events, social meetings.

www.disco3.co.uk

DISCO3.CO.UK - View topic - Faultmate reprogramming help... HELP!!! My BCU/CJB is dead!!

Community site dedicated to Discovery 3, 4 LR3 and LR4 Owners and Enthusiasts. Totally free to join - message boards, galleries, wiki, off road events, social meetings.

www.disco3.co.uk