Renault UCH BSI swap

[Tawe]

Hi. It is about 2003 Renault Megane II. Old UCH BSI is damaged and I want to buy used with same numbers.

I need to know how can I reprogram buyed uch to this car. Do I need to swap some eeprom or ?

Siemens UCH X84 N3
S118400300
8200305576
RF Homologation

[alfons37]

I think you can swap eeprom and it work for you.

[Tawe]

I think you can swap eeprom and it work for you.
But do you know which eeprom have data that I need to swap ?

[tony59]

I Think in the uch you can find only a micro mc9s12dg256 and if you have a good programmer like etl or x-prog,you need copy a full micro(eeprom+flash),in this mode your work is ok

[Tawe]

I Think in the uch you can find only a micro mc9s12dg256 and if you have a good programmer like etl or x-prog,you need copy a full micro(eeprom+flash),in this mode your work is ok

Inside is 1K79X (SC511347B). Is this motorola HC12 with maskset 1K79X ?

[tony59]

Yes, masket 1K79X is Motorola MC9S12DG256 , you must copy flash And e2p

regards

[Tawe]

Yes, masket 1K79X is Motorola MC9S12DG256 , you must copy flash And e2p regards

Okey thanks. It would be great if someone tell me which eeprom I need to read ?