JPR10

I newly acquired a 2010 535i that has been cared for by the previous owner with the exception of the auto trans which I think is still on original fluid.

I planned to change out the filter, pan, gasket, and valve body sealing sleeves (mechatronics).

while Im in there, should I also be replacing the shift solenoids or is that overkill?

car has 111k and shifts relatively smoothly now, and has never thrown a trans code.

what do you think?

donpb

Its kind of up to you. If you can afford it, and don't feel like going back in there later, then go for it.

plus1111

When we got our 535xi it shifted perfectly but I'm a trans fluid change believer. I simply drained and refilled the first time with the plan of doing it again with a new pan filter. A thousand miles later I replaced the filter and fluid. I've replaced fluid once more because I tried to stop a leaking drain plug and snapped it. It shifts perfectly at 225,000 miles.

JPR10

wow that’s great to see this trans go for that long. I’m assuming on the original shift solenoids?

what interval are you following for filter and fluid changes?

plus1111

I have always used 50k miles as a fluid change guide.
Contrary to the stories, the ZF transmissions are almost bullet proof IF you perform regular servicing.