Hey folks,
So I have an 02 525i Auto E39. Build date 07/2002, M54 2.5L, ZF auto trans. She's my baby and last month the tranny took a dump. It's the ZF 5HP19 automatic trans (septronic). The front input shaft seal blew, spun the metal bushing behind it and it seized to the torque converter. The bushing spinning almost surely ruined at least the oil pump, and sent shavings through the trans. Although my fluid drained out a fresh, see through cherry red color and didn't smell burnt, there are signs that led me to buy a whole trans as opposed to trying to rebuild/spot fix again (the fluid was almost brand new too). I got the infamous Trans Failsafe Prog.
Mechanically I am pretty sound and have taken this very transmission out of this very car and reinstalled it once before (thinking it as just the TC and seal that needed to be replaced) - unfortunately it was more in-depth.
Fast forward to now, I have a new (used) transmission being delivered tomorrow and am preparing for the install. I am confident in the mechanical steps, but I am not certain about the reset/clear for the Trans Failsafe Prog. Can anybody advise? I do not have INPA or other potentially necessary software Will my car need to be taken to an Indy for this? (I think I already know the answer; yes).
Lastly, I read that when installing a new (or different) whole transmission, BMW requires you to call BMWNA and get a new "transmission code". This is my main area of ignorance/concern. What is this code? What purpose does it serve? How is it input in to the vehicle? Is this also something that will have to be done with INPA/applicable software, also at an Indy shop? And also important - at what step does this need to be done? After the new transmission has been installed but before electrical power is reconnected?
Thank you in advance. I know my questions are a bit searching themselves, but I have searched the Fest and Google and am still unclear.
Warm regards,
Braden