New steering wheel (LDW and heating problem)

[testingbmwcode]

Finally, I replaced the vibrator, and the LDW works perfectly. The ISTA test worked on the first try and on the road.

Conclusion: if the cables are fine and ISTA indicates an issue with the vibrating motor, you should take it seriously. In a workshop, they might not bother and would have replaced the entire steering wheel or the module along with the vibrator.