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Thread: Security Control Module LJE2600BD

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    Security Control Module LJE2600BD

    I'm looking for a spare SCM for a 2005 XK8 coupe. eBay seem to be dry of them at the moment. Alternatively, a contact for someone who can diagnose and repair a faulty one would be useful. At the moment, I have to open the door with the key and disable the alarm within 7 seconds by getting the key into the ignition and turning it.
    2005 XK8, Platinum Silver, 20'' Detroits.

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    breakers probably your best bet, these are increasingly rare - Penge jag perhaps, also had good experience with North east Jag and Euojag
    http://www.avilec.co.uk/ might be able to help repair i've used them successfully, but i think they are mainly ECU?
    1996 Xk8 convertible - 82,000 miles - Sherwood Green, Stone hood, Cream/Sable interior

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    Senior Member Nerja's Avatar
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    If I were you I would do some more research on this fault before deciding you need a new SLM - it's a reasonably common problem, but the only solution I have seen involved repairing the ECU not the SLM.

    You can also turn off the "insert key to disable alarm" feature - it's a dealer software option.

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    this might be a stupid question, so apologies - have you tried replacing the battery in the key remote? My XK8 used to do exactly this when the batteries where low/dead.
    it may also be worth going through the re-paring the remote procedure, (something to do with going through a sequence on the j-gate from memory but not sure). if the battery has been dead a while the key may have forgotten the codes.
    J
    1996 Xk8 convertible - 82,000 miles - Sherwood Green, Stone hood, Cream/Sable interior

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    Hi flozgk and Nerja, thanks both for the replies. I have replaced the batteries in both fobs and tested them on the very handy YouTube method of demonstrating the signal transmission on a Samsung tv. Both work fine. I have tried the flasher stalk reprogramming method twice but no success. I've also checked the continuity of the areal lead up to the rear window connection and it's fine. I have opened up the unit and there are no visible signs of corrosion, failed components or dry joints.
    I'm going to try disconnecting the battery for a hard reboot as a last resort and will then start the hunt for a repair or replacement unit. I'll let you know how I get on.
    2005 XK8, Platinum Silver, 20'' Detroits.

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    Hi Nerja, I'm curious about the ECM being the possible fault. Can you tell me how this would affect the security/central locking please?
    2005 XK8, Platinum Silver, 20'' Detroits.

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    Senior Member Nerja's Avatar
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    Quote Originally Posted by Allanj View Post
    Hi Nerja, I'm curious about the ECM being the possible fault. Can you tell me how this would affect the security/central locking please?
    I don't know but presumably the ECU has some function to do with programming/remembering/recognising the key fobs. The problem you are having is a common one and other people have posted that changing the SLM didn't fix it, but replacing the ECU did.

    If you can't even source a new SLM it might be worth getting your ECU checked or even swapping that part, but I would certainly do more research on this before spending any money.

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    Hi, I think that this is the ECU that you're referring to - it must work in conjunction with the SLM. Fortunately this unit is a lot more available and cheaper on eBay.

    2005 XK8, Platinum Silver, 20'' Detroits.

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    Senior Member Nerja's Avatar
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    Quote Originally Posted by Allanj View Post
    Hi, I think that this is the ECU that you're referring to - it must work in conjunction with the SLM. Fortunately this unit is a lot more available and cheaper on eBay.

    No, I'm talking about the Engine Control Module. The key transponder you have pictured checks for the presence of the ignition key - the engine won't start without it.

    As I say you need to do your own research, but the solution I have seen for non working key fobs when all else has been eliminated is the ECM/ECU.

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  11. #10
    Senior Member V8Steve's Avatar
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    Quote Originally Posted by Allanj View Post
    I have replaced the batteries in both fobs and tested them on the very handy YouTube method of demonstrating the signal transmission on a Samsung tv.[/FONT][/COLOR][/LEFT]
    Can you post a link to this it maybe helpful to others.
    2002.5 4.2 SE 14th year of S Type ownership. Full Jaguar Paint, Navigation, Music Player, Steering Wheel & Seats that move by themselves,Wheels, Screen, Colour changing Mirrors, OEM Bright Lights, Opening & Closing Doors & Windows. Bluetooth Phone & Voice. Beeps at the back. Now on second with additional useless TV , warm seats & windscreen, first one died at 190,000.

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