Renault immo off, S115300121

[Techhead]

Hi i have a Renault with a siemens s115300121 ecu which the reverse is covered in silicon/rubber the car has an immo issue and i need to immo off, if i put the key in and turn the key quickly before the immo cuts in the engine starts but then dies.

I have x prog m and digimaster II and am presuming i will need to communicate via certain pins to get a dump to then modify before programming back on, but this is an educated guess and all help/advice is much appreciated.

[mihai_vyt]

fenix 5.... search

[lupu_sandu]

http://www.digital-kaos.co.uk/forums/f178/renault-fenix5-im-o-101129/ Read post #2. Solution is tested and working. No need programmer or any solder/desolder tools.

[alfabit]

Fenix 5 you`ll make immo off with a tool tiny sweeper, very simple, ATtiny2313 uP, works perfect.
Search here for " tiny sweeper " tool schmatics, simple even for a electronics beginner !
No need to open the ecu, only a few wires and you`ll see there.

[Techhead]

Should the immo light go out after the car has started then or should it go out before to confirm this has worked?

I attempted this on the car and carried out the process 5 times then gave up and all the time the immo light was flashing i mistakably thought it was that light i wanted to either go out or stay on. I attempted to start the car with no outcome.

I have brought the ecu to the bench and since seen it is the eml light that needs to be on constant so i have checked that and it does stay on, so i have also carried out the 1a to 1b etc routine 9 times and going back out to the car tomorrow to try again.

The owner of the vehicle called me to say he has been told of a case where the ecu had gone into infrared mode instead of u c h and it may need that setting changing??



Could that be the case? has anybody heard of that?

[Techhead]

Hi,

unfortunatly this didn't work, any advice?

The owner of the car says that the eml was not flashing in the first place so could i have jumped the gun?

Any advice much appreciated.

[PierreTheron]

Hi

I think it is time to check wiring and relays first.

Does the central locking work with the key?

[Techhead]

Central locking works fine yes via the key