Remote key fob nightmare

[dan.wfs]

Hi Guys,

Does anybody know if a berlingo could end up in a situation where the remote fob for central locking would need to be programmed in by a diagnostic machine thingy?

My original remote key fob broke quite a while ago. Using the key in the drivers door to lock and unlock the van is starting to get a little annoying. So iv purchased a new circuit board for my key and fitted it, but iv tried everything I can find online to program the damn thing into the van with no success.

Is it possible I would need to take it in to a main dealer to sort it?

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[Gravity]

Does the car start with the new circuit board? Probably not.

If you've bought a 'generic' circuit board, like the ones now listed on Ebay, it will not include the transponder, which is the tiny magic chip that is interrogated by the car's ecu when you insert the key and try to start it. That would need to be transferred from your old key. And I expect that your new board would also need to be mated with the vehicle before it would work.

Someone with more detailed knowledge than me will give a better answer, or you could try an auto locksmith near you as the best bet - cheaper than a Cit dealer.

Gravity

[Satellitemark]

Hi Dan,

I'm pretty sure , you have to cut a little carbon block transducer out of the original one and insert it into the opening in the corner of the new key case.
I did one on my wife's first m49 Berlingo which had a key just like yours, you can test if it is the transducer buy holding the old case next to the new key in the ignition as you start it up, if it starts then it's the transducer, be careful digging it out of the old case so you don't damage it, I picked away at the plastic with a Stanley knife to get at mine.

Let us know how you get on.

Mark

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[Satellitemark]

Here is a video that shows the problem, although it's a later key you can see the transducer in the back half of the key fob, it's a small rectangular block at the key end of the fob, in some cases you can do what this guy did and use the old fob back and circuit board with the new fob front and blade , bit if the transducer is in the button side you have to dig it out and transfer it.(be patient, it took me over a half our to dig it out without damaging it)

https://m.youtube.com/watch?v=poOHLxjVtPg


Mark


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[Gravity]

In some vehicles the tiny transponder can be removed from the key fob and stuck right next to the key slot on the steering column, and then any key cut to fit will start the car - without needing a transponder in each key. Not tried this yet, so no personal experience.

Obviously this means that the car is not as thief proof - unless you rig a seperate disabling switch - but it allows several keys to be cut without paying a ransom each time.

Gravity

[dan.wfs]

In some vehicles the tiny transponder can be removed from the key fob and stuck right next to the key slot on the steering column, and then any key cut to fit will start the car - without needing a transponder in each key. Not tried this yet, so no personal experience.

Obviously this means that the car is not as thief proof - unless you rig a seperate disabling switch - but it allows several keys to be cut without paying a ransom each time.

Gravity

Thanks for all your replies guys, however as I said in the original post, it's just the remote central locking I'm having problems with. The van starts fine with the key as iv only changed the circuit board, the key body and immobiliser chip are original. Iv tried the method of turning on the ignition, holding lock button for 10 secs, turn ignition off, wait 10 secs and try the remote, nothing happens. Iv also put a new battery in the remote just to be sure, but still no success.

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[Satellitemark]

In some vehicles the tiny transponder can be removed from the key fob and stuck right next to the key slot on the steering column, and then any key cut to fit will start the car - without needing a transponder in each key. Not tried this yet, so no personal experience.

Obviously this means that the car is not as thief proof - unless you rig a seperate disabling switch - but it allows several keys to be cut without paying a ransom each time.

Gravity

Thanks for all your replies guys, however as I said in the original post, it's just the remote central locking I'm having problems with. The van starts fine with the key as iv only changed the circuit board, the key body and immobiliser chip are original. Iv tried the method of turning on the ignition, holding lock button for 10 secs, turn ignition off, wait 10 secs and try the remote, nothing happens. Iv also put a new battery in the remote just to be sure, but still no success.

Sent from my Pixel 2 using Tapatalk

Sorry, I misunderstood your problem.
Have you tried to test if the micro switch on your circuit board is faulty ? You should be able to test if the switch is working with a multimeter or even a small loop of wire to connect the switch contacts together, if you bridge it and the van locks / unlocks it's the switch, I've seen the micro switches for sale on eBay and if you can't solder there is also a guy offering a repair service if I remember right.

Mark

Sent from my VFD 710 using Tapatalk

[dan.wfs]

In some vehicles the tiny transponder can be removed from the key fob and stuck right next to the key slot on the steering column, and then any key cut to fit will start the car - without needing a transponder in each key. Not tried this yet, so no personal experience.

Obviously this means that the car is not as thief proof - unless you rig a seperate disabling switch - but it allows several keys to be cut without paying a ransom each time.

Gravity

Thanks for all your replies guys, however as I said in the original post, it's just the remote central locking I'm having problems with. The van starts fine with the key as iv only changed the circuit board, the key body and immobiliser chip are original. Iv tried the method of turning on the ignition, holding lock button for 10 secs, turn ignition off, wait 10 secs and try the remote, nothing happens. Iv also put a new battery in the remote just to be sure, but still no success.

Sent from my Pixel 2 using Tapatalk

Sorry, I misunderstood your problem.
Have you tried to test if the micro switch on your circuit board is faulty ? You should be able to test if the switch is working with a multimeter or even a small loop of wire to connect the switch contacts together, if you bridge it and the van locks / unlocks it's the switch, I've seen the micro switches for sale on eBay and if you can't solder there is also a guy offering a repair service if I remember right.

Mark

Sent from my VFD 710 using Tapatalk

Il try it, but the circuit board looks almost like new and was advertised as tested and fully working when I bought it off fleabay. I was just unsure if I was following the correct procedure, never had to do it before. I also read on some other threads that C4's and some other citroen models in certain situations had to have new remotes resynced by a main dealer, wasn't sure if this would apply to my 06 berlingo enterprise

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[jj9]

Thanks for all your replies guys, however as I said in the original post, it's just the remote central locking I'm having problems with. The van starts fine with the key as iv only changed the circuit board, the key body and immobiliser chip are original. Iv tried the method of turning on the ignition, holding lock button for 10 secs, turn ignition off, wait 10 secs and try the remote, nothing happens. Iv also put a new battery in the remote just to be sure, but still no success.

The sequence of holding the lock button for 10 seconds, turn ignition off etc., that you are trying is for re synchronising your already programmed to the car remote if it has somehow lost synchronisation. 
This will not work with a 2nd hand circuit board from a different vehicle.

I'm pretty sure that it's not possible to make a used remote from a different vehicle work even if you have Lexia, unless someone has found a way since I last read about it.


Is there no way you can repair your original circuit board?



.

[dan.wfs]

Thanks for all your replies guys, however as I said in the original post, it's just the remote central locking I'm having problems with. The van starts fine with the key as iv only changed the circuit board, the key body and immobiliser chip are original. Iv tried the method of turning on the ignition, holding lock button for 10 secs, turn ignition off, wait 10 secs and try the remote, nothing happens. Iv also put a new battery in the remote just to be sure, but still no success.

The sequence of holding the lock button for 10 seconds, turn ignition off etc., that you are trying is for re synchronising your already programmed to the car remote if it has somehow lost synchronisation. 
This will not work with a 2nd hand circuit board from a different vehicle.

I'm pretty sure that it's not possible to make a used remote from a different vehicle work even if you have Lexia, unless someone has found a way since I last read about it.


Is there no way you can repair your original circuit board?



.

The old remote ended up in the washing machine tried to dry it out at the time and try revive it, but it wouldn't work so I thew it in the bin. What you have said makes sense, I didn't find any information online to suggest that you couldn't pair a used remote, only the original, so it's probably worth having this thread up. I might pop down to my local main dealer then and see what they can do. Thanks fellas

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