[jawad200]

I drive a 2017 540xdrive, i flashed xhp transmission tune and a couple weeks later i get this issue when i want to park, going very slow while hitting the brakes, the car vibrates a little. It happens sometimes

Now it happens more when the wheel is at an angle not straight. Im at 86k miles

I heard it can be the transfer case but i wanted to see other peoples opinions

[BWilson263]

Try getting your transfer case fluid changed first. Should fix the problem.

[jawad200]

I activated line pressure bump and the problem went away?

[BWilson263]

Nice …. Good to hear.

[G30M]

Originally Posted by jawad200

I activated line pressure bump and the problem went away?

I think you're in tiger country here. I almost flashed this thing but thought better of it after reading about premature ZF failures.

[jawad200]

Well the problem actually came back. Anyway this can be a sign if a trans going out? Slipping clutches maybe?

[G30M]

what happens if you restore to factory settings

[jawad200]

It happens but not much. I think i have to do the transmission fluid and transfer case and see what happens

[BWilson263]

Originally Posted by jawad200

It happens but not much. I think i have to do the transmission fluid and transfer case and see what happens

Yes, I agree...try the transfer case fluid first.