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scarecrow
Member Since: 14 Dec 2019
Location: Gloucestershire
Posts: 59
  
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Hi all, I’ve got the dreaded B1A00-49 airbag control module internal fault code and an SRS light on. Came on after moving the drivers seat, but now won’t clear.
I’ve checked all the live values, and all seem ok except that both safety belt sensors come up as a fault when buckled but no fault when open, and always read as unbuckled whether plugged in or not.
From searching other posts on here it sounds like getting a replacement RCM is the way to go (£25 off eBay rather than £400+ from LR!) but it sounds like it needs to be re-flashed using the IID. Can somebody tell me how to go about that please, or do I just need to drop an email to GAP?
Also, is it worth unplugging the existing RCM and cleaning out the connectors first, or is that a wasted bit of disassembly once the code has appeared?
Many thanks in advance for any help.
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 31st Jul 2021 4:20 pm |
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scarecrow
Member Since: 14 Dec 2019
Location: Gloucestershire
Posts: 59
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Well advice from GAP is it has to be a new unit anyway, used is apparently not an option…
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| 10th Aug 2021 7:48 am |
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eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 813
  
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i used to get this when i moved the drivers seat was really frustrating i eventually fixed it by taking the block connector out of the little plastic box attached to the seat base and blasting each connector with switch cleaner and then i seem to recall it took several attempts at clearing the codes patience is your friend with this one mines been ok for several years now (fingers crossed) please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
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| 10th Aug 2021 8:01 am |
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scarecrow
Member Since: 14 Dec 2019
Location: Gloucestershire
Posts: 59
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Thanks eightfoot, given it started when the seat was moved that sounds like it’s worth a try before parting with the cash for a new unit! I assume that’s a battery-disconnected job since pyros are involved. Is there just the one connector to the box? (I’m not with the car at the moment)
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| 10th Aug 2021 8:06 am |
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Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
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From memory in the early days there use to be wires that broke under the seat that gave that issue, may be worth checking them all MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
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| 10th Aug 2021 9:04 am |
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eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 813
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scarecrow wrote:Thanks eightfoot, given it started when the seat was moved that sounds like it’s worth a try before parting with the cash for a new unit! I assume that’s a battery-disconnected job since pyros are involved. Is there just the one connector to the box? (I’m not with the car at the moment)
prob safest to disc the batt (i didnt) and there are 4 or 5 connectors in the box make sure that none are badly bent or pressing hard against each other (resistance thing) i seem to recall they where also quite badly crushed against the seat runner where they come through the carpet by the seat runner
my saga started when i moved the seat to vacuum the debris from under the seat that will teach me to clean a landrover but been alright since rearraigning the wires and contact cleaning them all a few years now please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
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| 10th Aug 2021 11:14 am |
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scarecrow
Member Since: 14 Dec 2019
Location: Gloucestershire
Posts: 59
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Thanks both will give it a go when I get home. I’ve got Lazy Entry turned on so the seat moves about quite a lot every time I get in and out maybe not such a good idea!
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| 10th Aug 2021 3:13 pm |
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scarecrow
Member Since: 14 Dec 2019
Location: Gloucestershire
Posts: 59
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Well I finally got round to getting under the seat. Opened up the connector and cleaned it out, no change. Also removed the centre console and removed/cleaned connectors on the Restraint Control Module itself but the fault is still there. Looks like I’m going to need a new RCM after all ):
Thanks for the suggestions all the same, definitely worth a try before shelling out
Update to the update: Part numbers for the RCM seem to vary, as does price! NNW512000 seems to be widely quoted, but according to Island 4x4’s site this is only good up to chassis number 8A443845 - mine is 8A447xxx. Wish I’d taken a photo when I had the thing exposed!!
Is there a guide somewhere that would tell me which module I need?
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| 15th Aug 2021 5:34 pm |
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