Trusty old warhorse is showing all the usual symptoms of immobiliser problem. Can this damned nuisance be disconnected and, if so, how? ( It is completely irrelevant on a car worth at most £200 ). Garages, autoelectricians etc. all seem to suffer a fit of the vapours when this problem is mentioned. LOL David

no, the immo unit cannot be bypassed or disconnected

Even though there's a couple of ways it's theoretically possible, you'd be looking at an awful lot more than £200 to persuade someone with specialist skills and equipment to put the time and effort into trying.

Issues with the electronics are often symptomatic of problems with the battery/alternator so I'd have a thorough check over those.

I thought I read a post detailing how to bypass it on here last year (or the year before).

Was I dreaming????

I thought I read a post detailing how to bypass it on here last year (or the year before).

Was I dreaming????

May have been for the diesel, since they don't have a 'smart' ECU in the same way the petrol ones do - any solution for petrol ECUs is going to involve microcontoller programming and be far from straightforward. Or are you thinking of the 'tape the transponder to the dashboard' approach which isn't technically bypassing the immobiliser, just allowing the use of non-transponder keys?

I have an exact same problem with my felicia.

In my country, the repair coast not to high, but the dealership give me an appointment on February 11 it's ridiculous.

So if You find any solution, please let me know, in PM if it's can't be public.

if its the old single point injection you can fit a fav ecu which has no immob

or maybe someone cleverer than me could compare the internals of the fav and felly one and see a way to get around it lol

...or maybe someone cleverer than me could compare the internals of the fav and felly one and see a way to get around it lol

Just need to dump the EEPROM, reverse-engineer the program code, rewrite the immobiliser check routine, reassemble and flash it back. Simples!

see here we have a volunteer .. I can supply the ecu's if you want

Just need to dump the EEPROM, reverse-engineer the program code, rewrite the immobiliser check routine, reassemble and flash it back. Simples!

Piece of cake will ask my Mum to get the job done

Thank you all for your interest -- the problem has now been solved by one of the garages that freaked out when first seeing the car " there was a problem with the chip in the ignition key " NO KIDDING. Anyway it is now sorted at a total cost of £ 84.00, about half the value of the car, but pretty cheap I think.

whilst we're on the subject of coding, i've looked at the 1.6 petrol magnetti-marelli ecu hex dump files with a mind to re-writing my own mapping.. trouble is the eeprom chip is surface mounted onto the board so they are a little wee beastie to get off without ruining the circuit board beyond repair... all i can say is this.. if you wanted to kill the immo it would be very easy!

whilst we're on the subject of coding, i've looked at the 1.6 petrol magnetti-marelli ecu hex dump files with a mind to re-writing my own mapping.. trouble is the eeprom chip is surface mounted onto the board so they are a little wee beastie to get off without ruining the circuit board beyond repair... all i can say is this.. if you wanted to kill the immo it would be very easy!

You want an SOIC test clip for that, then

I was having a look into this a while ago, and what I found suggested it's possible to dump and reflash the Marelli ECUs over the K-line, can't remember where that was, though. I also think I saw someone had done an immo patch for one, but that may have been for the 1AW. I'll have to see if I can find where it was again.