ECU Serial Number for Automatic/Manual

[cpo3619]

Hey guys,

I have to replace the ECU in my 1999 A4 2.8 and I was wondering how to tell by the serial number if the ECU is automatic or manual. The sticker with the serial number is removed from my ecu.

I am searching on Ebay and I want to make sure so I don't have to reprogram it. Thanks

[Wrath And Tears]

You need to look for an ecu that is already coded for an automatic then. Pretty sure the ECU's are the same part number but I could be wrong.

[cpo3619]

You need to look for an ecu that is already coded for an automatic then. Pretty sure the ECU's are the same part number but I could be wrong.

It looks like there is :
4D0 907 551 A
4D0 907 551 AH
3B0 907 551 BQ

[Wrath And Tears]

Call the dealer with your vin and ask for the part number for the ecu. Then you will know for sure.

[BaseDrifter]

What is the number on your current ECU?

I might have a spare laying around.

[Wrath And Tears]

The number on his current ECU (sticker) got removed so he doesn't know unfortunately.

[crazyquik22023]

You need to look for an ecu that is already coded for an automatic then. Pretty sure the ECU's are the same part number but I could be wrong.

Correct, a manual or automatic ecu can easily be coded with vagcom to work with either transmission.