Just about to swap my BCU under the pass seat (symptoms are small probs such as intermittent parking sensors; rear pass door not unlocking every time; power steering heavy)

1. Is it able to be driven after swap but before it is reprogrammed?

2. Ref the reprogramme, what obd Readers can do it or is it a dealer job only?

Thx
DB

this will help,

http://www.fullfatrr.com/forum/topic40009.html ... - .- -.




Y. O. L. O.
.

Hi Stan,

Thanks for that - I have already got that set up as my bible for doing the job but have no iid tool, hence the questions; will I be able to drive it to my dealer/ Indy with the new bcu not having been programmed?

Can any obd tool do the reprogramme or just iid? It sounds like a bit more complicated given that GAP had to send a special download.

I don’t know if this will help but when I bought my L322 it had various things that weren’t working as they should, interior lights coming on when the door was closed not on opening, central locking not working as it should etc. In conversation and subsequent investigations with Pat at GAP it was determined that the wrong firmware update had been loaded onto my BCU.

So it was like having no BCU fitted but the car drove perfectly, it just misbehaved in the interior lights, locking and sunroof depts.

Regards ______________________________
Simon
______________________________

Range Rover Classic 3.5 efi - Gone
Range Rover Classic 3.9 efi - Gone
Range Rover Classic 4.2 LSE - Sadly gone
Land Rover 110 3.5 - Gone
Range Rover P38a 4.0 SE - Pleased it's gone
Range Rover P38a 2.5 DHSE - Just sold
Range Rover L322 4.4 v8 Petrol - Current

i'd be interested to hear how you get on with this, as mine has little issues to!!
heavy steering
heavy brakes
doors not unlocking
all intermittent

Right big hand to Bechtoon for his "how to"!!

Have just changed the BCU (The replacement is most recent Model Number (YWC000922 - the one fitted in mine was a YWC000921) and it has cured the Power Steering issue but not the rear Pass door unlock or the intermittent parking sensor fault (loud continuous tone on reversing out after being parked but fine when reversing into park space after driving).

Question:

1. Does the part number have to match? (YWC000921 Vs YWC000922). could this cause the failure to correct the other 2 faults?

thanks
DB

The part number for the BCU I got from Ducky Dan was YWC000923. I think the old one (Nov 2004 Fatty) was YWC000922 as my old files (car sold almost a year ago) seem to suggest that was the part number I was searching for.

There's a little (inconclusive) info on http://www.rangerovers.net/forum/6-range-r...stion.html

All other info I've found suggests that each part supersedes the previous and provides the same functions.

As you'll have seen from my post in the Wiki, replacing the BCU cured a multitude of problems on my car, including rear door locking and rear parking sensor gremlins.

Good luck!

 It's "bébéchoon", ackcherly, with accents. 'Steve' to my chums.
20 years ownership of Solihull products, ALL GONE NOW, sniff!
Current motor: Suzuki S-Cross 4WD auto, 1.4 petrol. Oh so reliable! 7 years now and no problems. Oh, all right then, a leaking shocker replaced under guarantee.
Previous:
TD6 HSE L322 Auto FF
2.5 TDi 4-door Classic
Disco II
And my 1st Rangie: in 1995, a 2-door VM 2.5 diesel Classic
Not to mention the Lada Niva before those. (I said not to mention it!)

Hello together,
maybe someone could help me right here.

Could anybody show me where this BCU exactly is? I swapped a full water bottle and since that the locking system and mirrors and window control don't work as they should...

Is there any possible way to reset this BCU ?

thx )

On a left-hand drive car (not sure if it's the same for a RHD ...) the BCU is under the front passenger seat.
See pics and full details in my post http://www.fullfatrr.com/forum/topic40009.html

I'm afraid I can't help with your question about resetting it - maybe someone more knowledgeable will be able to help?
Meanwhile, in case you haven't already done so, try drying it thoroughly (maybe with a hair-drier on a low setting?)


 It's "bébéchoon", ackcherly, with accents. 'Steve' to my chums.
20 years ownership of Solihull products, ALL GONE NOW, sniff!
Current motor: Suzuki S-Cross 4WD auto, 1.4 petrol. Oh so reliable! 7 years now and no problems. Oh, all right then, a leaking shocker replaced under guarantee.
Previous:
TD6 HSE L322 Auto FF
2.5 TDi 4-door Classic
Disco II
And my 1st Rangie: in 1995, a 2-door VM 2.5 diesel Classic
Not to mention the Lada Niva before those. (I said not to mention it!)