Mercedes W203 EZS 4J74Y - all keys disabled - repair please

[psam]

Hi,

Can someone help me with the software of this EZS from a W203.

I've all keys disabled...

Please find attached reading of MCU 4J74Y.

Thank you so much in advance.

BR,
PM.

[kuzia1]

нннннн.rarнннннн.rar

[psam]

нннннн.rarнннннн.rar

What's this file?

[psam]

Can someone give me a hand on this one, please?

Thanks.

[babeh]

Is that W203 work ? able to start engine ? any working key ?
You can try this first:
1. take out EZS from car
2. read EZS, save data with key password (BD 2D 1D 85 D3 D1 B5 AC)
3. renew EZS, your erase password is : 30C75FC372211F98
4. write saved EZS data back, activate with working key.
5. all tracks will back to normal, then can generate new key files and program new keys.

But I'm afraid that won't work for you.
You need to work in car, enable key one by one with enable key password,
because may need to enable the key track to ECU and TCU.
The enable key password is : FC2A73C164C8DAE1
1. try enable track 3, or 5 or 6 or 7 or 8
2. if success, read EZS, save data with key password
3. generate key file.
4. program key - if you enabled track 3, program key3.
5. try start car.
6. if success start car, calculate enable key password for other track if you want to enable all other tracks.

According to your file, track 1,2,4 hash are missing!
If you want to completely rebuild your EZS, you need Xentry Star etc.

If you just want start car, try the above steps with key tool, such as VVDI etc.
Pure eeprom read write maybe can't fix it.

[psam]

Is that W203 work ? able to start engine ? any working key ?
You can try this first:
1. take out EZS from car
2. read EZS, save data with key password (BD 2D 1D 85 D3 D1 B5 AC)
3. renew EZS, your erase password is : 30C75FC372211F98
4. write saved EZS data back, activate with working key.
5. all tracks will back to normal, then can generate new key files and program new keys.

But I'm afraid that won't work for you.
You need to work in car, enable key one by one with enable key password,
because may need to enable the key track to ECU and TCU.
The enable key password is : FC2A73C164C8DAE1
1. try enable track 3, or 5 or 6 or 7 or 8
2. if success, read EZS, save data with key password
3. generate key file.
4. program key - if you enabled track 3, program key3.
5. try start car.
6. if success start car, calculate enable key password for other track if you want to enable all other tracks.

According to your file, track 1,2,4 hash are missing!
If you want to completely rebuild your EZS, you need Xentry Star etc.

If you just want start car, try the above steps with key tool, such as VVDI etc.
Pure eeprom read write won't fix it.

Thank you SO MUCH for your help and explanation. However, here I've several problems...

1. car it's away (another country!). I've Xentry, but I can't acess the car due to that reason...
2. I've changed EZS with another one but without results... I've all the passwords, SSID, etc... with both EZS, original and scrap, and with the original eprom file I can't renew EZS or enable keys. The process always fails...
3. yes, I saw that some key tracks are 0000... I've tried to enable the other ones, etc...
4. I've been working for several hours, several machines, without sucess....

For all that reasons I decided to try to find some help.... specially due to the car beeing very far way...

Thanks again for your kind explanation, but in fact I've already tried all that you mention.

I think that the only chance I've it's someoneo with the knowledge or equipment to edit the file and correct it "by hand"...

Thanks again all.
Hope to receive any further comments.

BR.

[whiskymk]

try this dump ,,,,i think u eeprom is bad but try to use key 5,6,7,or 8

[psam]

try this dump ,,,,i think u eeprom is bad but try to use key 5,6,7,or 8

Thank you SO MUCH!!!
Considering the first look at the file, I would say it will work...!

I'll give you feedback.

BR!

[babeh]

If those slots are disabled in purpose, and if the previous worker put the wrong slot hash in purpose,
you can't work this out just with the ESZ, you will need ECU and TCU.
good luck.

[psam]

If those slots are disabled in purpose, and if the previous worker put the wrong slot hash in purpose,
you can't work this out just with the ESZ, you will need ECU and TCU.
good luck.

Thanks for your advise and comments.
They were'nt disabled in purpose.
Car just stopped...!

I've also adapted ESL without problems.
Now I'm waiting to know what happens when assembled in car.
If it's synced with ECU...

Since the car it's very far away...

Let's pray...

Thank you all!