Zitsw

Hello everyone,
After a long trip after i stopped i heard a weird sound under the car and got a few messages on my dashboard 4x4, abs, dtc, brake. After that I didn't drive that car on a long distances, most of the time it was parked near to my house. I read a lot of forums where everyone saying that you need to replace actuator motor which i ordered and was ready to replace, but when i took my car on another small trip i heard a sound which coming from under the car and if the first sound was only when i started car or turn it off, this sound coming even if i'm rolling or accelerating. Now i changed my actuator motor and did a calibration for the TC, 4x4 error didn't pop up a mile of drive and i still heard a clicking sound under the car while rolling, after a mile i still recieved a 4x4 issue.
What can cuse that sound and why changing my actuator motor didn't help to solve the 4x4 issue, i'm thinking that noise under the car can cause the driveshaft but can it cause 4x4 error or the sound is not connected to 4x4 issue.

seanjordan20

Interesting story. I have a couple questions well one. Did you get the car diagnosed? If not stop everything you're doing and either get a BMW OBD2 scanner and scan the car or take it to a mechanic to have it diagnosed. You cannot diagnose issues by a noise especially on BMWs because many different things can cause one single issue. Just trying to prevent you from spending any more in unnecessary money. You just spent money and time on something that was not your issue and you're back at square one. The money could of went towards a scanner that would helped by pointing you towards the right issue.

Zitsw

Yes, i scanned car with a obd2 scanner and ista, they both showing the pain codes are a 5F3A and 54C6.

seanjordan20

Did you test the motor before replacing and did you look at the gears to make sure they were not worn or broke? The second code is nothing to worry about it can be reset.

Zitsw

Old motor looked fine when i disassemble it but when i tried to assemble it back i broke a cap so i needed to change it anyway but i didn't buy an oem one, can it be the problem? Also i didn't cahnge oil in TC.