ECU immobiliser question any ideas please

[Guest]

ok here's a little story and i'm slightly confussed. I've hered a few different explinations as to where and how the immobiliser works and thought i understood.

I've had a few problems getting the key fob to operate so therefore couldn't turn the immobiliser off. I had a spare ECU with the secondhand engine I had, so thought as i had been told it maybe one which was pre immobiliser days. I changed them over and it made no difference. the immobiliser still came on. later found that all the problem was, was the batterys in the key fob needed changing so the immobiliser is now de activating as it should.

I've now bought a remapped ECU from ebay and tried to fit it. Its the same model as the current one I'm using but when i plug it in the key fob still opens and locks the doors but the immobiliser doesn't deactivate. Any ideas why this is? I'm a bit miffed that I cant get it to work.

 

[Alta Vista [Bot]]

because there coded to the vehicle i think.... :?

can have them reset by renault i think

 

[Guest]

because there coded to the vehicle i think.... :?

can have them reset by renault i think

But that is why i am confussed because i Have three ECU units now and two work and the remapped one doesn't.

ECU one Original one with car works fine
ECU two From a renault 19 works fine
ECu three re mapped wont turn immobiliser off.

 

[Guest]

the chipped ecu may be from a ph2 clio.


Post up the numbers on the ECU's. it will help us to decifer what clio theyre from and what use they are to u!

 

[Alta Vista [Bot]]

i suppose on the ecu...

original will work as its right.
if one of the others was phase one no immobiliser so will work anyway.
chipped one might have the wrong immobiliser code if it phase 2 or later

 

[Guest]

yeah, if its a ph2, you need the original key and IR reciever. i know you can code the keys but im not sure on the IR reciever

 

[Guest]

i suppose on the ecu...

original will work as its right.
if one of the others was phase one no immobiliser so will work anyway.
chipped one might have the wrong immobiliser code if it phase 2 or later

will try and get all the numbers tomorrow. just to clariffy the second ECU still has the immobiliser and it de activates.
The re mapped ecu is from an M reg renault 19 1.8 16v if that helps at all.