Which BMW specific scanner are you using to get the "rotation-rate sensor" error and to read live data ?? And how did you reset the steering-angle sensor after installing the rebuilt ABS ??
And yes, error code 52 from the ABS module indicates a bad rear-left speed sensor or bad inlet valve.
FYI, IIRC, the yaw sensor is located under the driver seat. And I do not think it is your issue..
.... I recently had the ABS module rebuilt, and after putting the original wheel speed sensors back on...
Well, may be you have the same problem as in that thread.
Can you have access to or borrow INPA and its K+DCAN cable ?
It can directly connect to and read the status of the ABS (DSC57 for your car), the steering-angle-sensor, the yaw-sensor and all other sensors/modules on this car.
If so, run Tool32's test_lenwinkel job : it recalibrates all the steering-angle and yaw sensors, and resets the ABS/DSC errors. Then test again.
Maybe that is all what is needed to fix your DSC error light. It has been the cure for many other bimmers with similar problems.
Well, you have many variables for this problem : a correctly rebuilt ABS ?, old and new speed sensors, and a questionable OBD2 scanner.
Tool32 is a software tool part of the INPA suite ("Mike's easy BMW Tools"). But that is not the scanner you have.
Well, forget the -Creator C310+ OBD2 scanner- for a moment. You can check its technical specs later.
You do have the DSC light on, and an error code 52 that does not want to go away. Yes ??
If so, this points to an ABS (DSC57 for this 2003 E39 car) that is disabled , presumably because of a bad rear-left speed sensor (code 52). That is all I can say.
What I was suggesting with the Tool32 test-lenwinkel trick is to clear the DSC light and the errors codes. Then see if they come back again.
So, the persistent error is code 52. The ABS list of errors says : "Code 52 : Wheel sensor rear left or inlet valve rear right".
If you are adamant that the rear left speed sensor is good, then we are left with the possibility of a bad ABS. Its rebuilding has been botched. Specifically, the rear-right inlet valve in the module is bad or broken.
I’m still confused by this conclusion. If that were the case, am I wrong to assume the ABS would also not be working? My ABS light is not on, if it were an issue with the inlet valve, wouldn’t that light be on as well?
I can try what @mattmar1 suggested by swapping the rear sensors and see if the code changes. If the code doesn’t change, that would mean it is the YAW sensor or the inlet valve. There is a warranty on the module, but hope I don’t have to go that route.
could easily be the ABS module as well or wiring. search here in this forum for TRIFECTA by bluebee, rest her soul, there are lotsa posts in the thread, but it will get you thru checking every wire that needs to be checked and how to do it.
curious...does the ABS and DSC light come on when turning the key to pos 2, then the ABS light goes out with DSC still lit, or does the DSC Light go out then return when driving?
when you say the ABS works in your post #8, have you tried to lock the brakes on wet pavement or are you going by what the lights are telling you?
btw, regardless of what you were told by the rebuilder about the creator 310, its a questionable unit, got one long time ago and got thrown down many a hole cuz of it, i ran a screw thru the middle of it and it now hangs on my garage wall.