Sonny007

Hi guys

I am going to change gearbox ga6hp26z on my 535d e60 2009 at my local Indy

I've been told that I may have to reprogram the new gearbox

Anyone know how this procedure can be done without going to the stealers?

Sonny007

Actually just opened the gearbox cover and it's a hp28

txag_530i

Does the manual transmission have a control module attached to it? If so, can you swap the control unit from the old transmission to the new? The car then will "see" the controller and carry on as if nothing has been changed.

Sonny007

Hi

Its an automatic gearbox

gearbox has been changed and works fine apart from the following two-

rev meter seems to be dead. Dosnt move at all

Paddle shift not working

any idea what it could be?

JasonH

Your car being a 2009 model will have the 6HP28 gearbox.

Don't swap the gearbox mechatronics because they're matched to the gearbox mechanicals.

The paddle shift isn't working because the gearbox doesn't know you have one; it needs to be told (coded).

You need the gearbox coded to the car to get everything to work properly and you may need a software update to the car or gearbox to bring them into line as well.

With the right tools (i.e. main dealer) it's pretty easy so it *might* be worth seeing how much a dealer would charge....

Sonny007

Can this be done via INPA? Or any here that may know how to do this?

Sonny007

Some garages day I need to take the transmission ecru from my old one and install onto the new gearbox?

JasonH

Not INPA (that's basic diagnostics) you need ISTA-P which is fairly rare outside BMW dealerships. It can also be done with some other software tools (WinKFP and NCS expert I think) but you need a serious specialist who knows exactly what they're doing.

JasonH

The gearbox ECU is the mechatronics unit which is inside the gearbox and is a pretty major component of the gearbox. If you changed the gearbox because the old one was faulty the fault could have been in the mechatronics.