Disco 2 Dodgy BCU, or......?

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Beating44Time

Beating44Time

Member
Posts
14
Location
Manchester
Evening folks. With my Hawkeye connected, all circuits including BCU work okay, including central locking.

The problem I have is that my key fob has ceased working. I've changed the battery and the led lights up when either of the 2 buttons are pressed. I only have 1 key. When I manually unlock the door, the alarm should sound but does not (I would usually turn the key anti-clockwise to then disable it). The alarm led on the dash is blinking away very fast and engine immobilised. I know the central locking works because of the BCU test.

I'm inclined to think that re-syncing the key fob is the job to tackle. Appreciate your thoughts and suggestions please:)
 
Hi, in these cases the first suspect is the RF receiver not the BCU, anyway you'll not be able to resynk your fob with hawkeye unless you have the barcode for it. I dont remember can you run a RF test with hawkeye in "transmitters" menu ? if yes do it... also do you know the EKA code?
 
Hawkeye does an RF test by proxy. If you try and synch a fob via Hawkeye and just use your current fob, it will ask you to press the unlock button. It will then tell you fob detected or not. Latter points to rf unit as SF states. If it detects it, cancel and look elsewhere for the issue
 
sierrafery said:
Hi, in these cases the first suspect is the RF receiver not the BCU, anyway you'll not be able to resynk your fob with hawkeye unless you have the barcode for it. I dont remember can you run a RF test with hawkeye in "transmitters" menu ? if yes do it... also do you know the EKA code?
Click to expand...
A faulty RF unit makes sense given Hawkeye indicates BCU functionality is okay. Can I get to the RF unit via rear sunroof cut-out? i.e. pull it down and reach in...
 
ronsealdeath said:
Hawkeye does an RF test by proxy. If you try and synch a fob via Hawkeye and just use your current fob, it will ask you to press the unlock button. It will then tell you fob detected or not. Latter points to rf unit as SF states. If it detects it, cancel and look elsewhere for the issue
Click to expand...
I'll see if I can get hold of a second fob in which case I'll try the Hawkeye approach.
In the Hawkeye Security menu, there's a "Show SecurityKey" item. Selecting that displays a 25 character (no numerics) code (displayed as 5 blocks of 5 characters). Any idea what that code represents? Hawkeye displays this informaiton with the ignition off.
 
You was lucky IMO. As long as it's 100% certain that the replacement is in perfect working order it's OK but if it's not then based on the presumption that it was ruled out a complicated troubleshooting starts for other faults which can be a nightmare for nothing... so advice for the OP: what ever unit you'll use as replacement better be sure it's working
 
Afternoon folks.

I now (at last) have a new RF Receiver. However I've misplaced the original fixings and cannot figure out how it was held in place. Looks like 2 x 10mm holes where the fixings are situated. But no captive nut or thread...
Anyone know what fixing to use please? Mindful one fixing is an earth plate so presumably it's something wildly exotic!
Thanks
 
They were originally fitted with plastic trim rivets, nr 8 http://new.lrcat.com/#!/1232/36532/36716/2782/36724 when the receiver was earthed through the connector but you can improvise with rivnuts and bolts or what ever you want just connect the eyelet to earth, facelift modells have studs there and the receiver fixed with nuts to tighten the external earth connection
 
Last edited:
Beating44Time said:
Evening folks. With my Hawkeye connected, all circuits including BCU work okay, including central locking.

The problem I have is that my key fob has ceased working. I've changed the battery and the led lights up when either of the 2 buttons are pressed. I only have 1 key. When I manually unlock the door, the alarm should sound but does not (I would usually turn the key anti-clockwise to then disable it). The alarm led on the dash is blinking away very fast and engine immobilised. I know the central locking works because of the BCU test.

I'm inclined to think that re-syncing the key fob is the job to tackle. Appreciate your thoughts and suggestions please:)
Click to expand...


I have a brand new RF receiver if you ned one
 
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