C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

What ECU number fits

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Old Dec 1, 2024 | 06:50 AM
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c200 w203
What ECU number fits

Hello,

I have C200 W203 2.2 75kw diesel 2005y, my ECU needs replacement, how can I find out what other numbers also fit for my car?

Number on ECU is A6461500779

Thanks




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Old Dec 1, 2024 | 07:52 AM
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Although a deep diagnose is mandatory before spending on a new ECU, you should know that a new ECU will need cloning or complicated programming for enabling for your car.

Choosing another reference number is VIN dependent.
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Old Dec 1, 2024 | 12:56 PM
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Originally Posted by trigital
Although a deep diagnose is mandatory before spending on a new ECU, you should know that a new ECU will need cloning or complicated programming for enabling for your car.

Choosing another reference number is VIN dependent.
Hello, thanks for reply

VIN number is WDB2032071F617129



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Old Dec 1, 2024 | 01:09 PM
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Any of those codes,


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Old Dec 1, 2024 | 03:00 PM
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Originally Posted by trigital
Any of those codes,

Hello, thanks again.

Just these four or there is more... I am asking because its really hard to find ECU with those numbers
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Old Dec 1, 2024 | 03:26 PM
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Originally Posted by nedimt
Hello, thanks again.

Just these four or there is more... I am asking because its really hard to find ECU with those numbers
No .more options in EPC.
If you can clone the SW, you can get the HW number from yours and find any part number with the same HW number.
Are you sure that your ECU needs to be replaced?
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Old Dec 1, 2024 | 03:57 PM
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Originally Posted by trigital
No .more options in EPC.
If you can clone the SW, you can get the HW number from yours and find any part number with the same HW number.
Are you sure that your ECU needs to be replaced?
Pretty sure, 3 mechanics checked it.

Ok, thanks mate
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Old Dec 1, 2024 | 04:02 PM
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Originally Posted by nedimt
Pretty sure, 3 mechanics checked it.

Ok, thanks mate
Did you tried a proper diagnosis with Star/Xentry?
Also, I hope "mechanics" is generic, as a electric technician will be more useful.
This ECU usually has a problem with activating the circuit 87, very easy to fix.

Here on forum, even at one of my replays there is some guys who repair it.
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Old Dec 8, 2024 | 02:02 AM
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Hello, I found this yesterday on yt and tried it and it works.. also the guy im comments says that its faulty ECU


[​​​QUOTE=trigital;9073460]Did you tried a proper diagnosis with Star/Xentry?
Also, I hope "mechanics" is generic, as a electric technician will be more useful.
This ECU usually has a problem with activating the circuit 87, very easy to fix.

Here on forum, even at one of my replays there is some guys who repair it.[/QUOTE]
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Old Dec 8, 2024 | 03:08 AM
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Originally Posted by nedimt
Hello, I found this yesterday on yt and tried it and it works.. also the guy im comments says that its faulty ECU

https://youtu.be/MyBE5BKk1O0?si=PJZnjKUDAA6DggqN

[​​​QUOTE=trigital;9073460]Did you tried a proper diagnosis with Star/Xentry?
Also, I hope "mechanics" is generic, as a electric technician will be more useful.
This ECU usually has a problem with activating the circuit 87, very easy to fix.

Here on forum, even at one of my replays there is some guys who repair it.
That's the "Circuit 87" from my post,
15 min job for repair.
ECU provide negative feed to the relay and you can follow the circuit till the pin from driver inside the ECU. You can try resolder that part of the driver.

Last edited by trigital; Dec 8, 2024 at 04:22 AM.
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