[Mattias_r]

Esa shocks are servicable not matter what Bmw claims. send it to ESA Repair ? ESA Repair, professionals in the field of shock absorbers, JJ suspension in Holland. The people running that place are 2 former engineers from WP, they helped design this shock and can rebuild them from the ground up, much cheaper than getting aftermarket units wich will not interface with the K series esa system.

 

[Mattias_r]

sounds OK then, the front does not have preload adjustment, hence it will not move up and down. If you hear a humming it means the electric motor is running and working if you feel a difference.