well today on the 24 of december got my early christmast took my a4 to the dealer because had the engine light on after one hour they call me and told me that i need it a new transmission control unit which cost 1336 dollars at the dealer the part number is 8e0910155f, any way that you guys could give me advise tell me where to find this part cheaper i will appreciate thanks !!!

 

You can try here. I know someone who ordered a new unit for his Acura through these guys. No problems with it at all. You may need to call as I couldn't pull up the order info for the Audi line up...kept getting an error when trying to get the page...

http://www.transmissioncontrolunits.com