Mercedes 203

[Mezz_cro]

Hello

I have problem with Mercedes W203,problem is that in the morning car won t start and also central lock doesn t work,only in the morning.

EZS is 203 545 01 08

Inside is 2J74Y ( KM ) and 4J74Y ( immo data )

I read with ETL 4J74Y eeprom and flash,but when i put it in SKC Calculator all keys are disabled,so anyone can help and check my file or help or advice ?

Thank you ...

Regards

[mercis]

can you see km on dash?
if no,make eis hot,this eis type allways hc08 chip error

[Shmortz]

you need to raplace MCU's or put another EZS, that type MCU have such problems when get old...

[Mezz_cro]

can you see km on dash?
if no,make eis hot,this eis type allways hc08 chip error

Hello

Yes i see KM on dash everytime.

Regards

[Mezz_cro]

you need to raplace MCU's or put another EZS, that type MCU have such problems when get old...

Hello

If i change MCU ( 4J74Y ) where is stored immo data,what i will get when is all key disable in SKC ?

Can i change that old 4J74Y with with new one 2J74Y ?

Thank you ...

Regards

[lion0304]

Hello

If i change MCU ( 4J74Y ) where is stored immo data,what i will get when is all key disable in SKC ?

Can i change that old 4J74Y with with new one 2J74Y ?

Thank you ...

Regards

Yes 2J74Y is instead for 4J74Y.

[Mezz_cro]

But first i must enable keys,because all keys are disable,anyone can help ?

Is possible to do with Abritus ?

Thank you ....

Regards

[mercis]

have you skc calculator?

[autodigitec]

Here are fixed file and some keys, key 1 hashes were completely erased, the rest is fine. If you write in the same MCU it will happen again.