Did you upgrade the suspension in your BMW F3X 3-Series with a set of aftermarket coilovers and now throwing some codes? KW Suspension Electronic Damping Cancellation kit #68510301 will help eliminate persistent trouble codes that exist when upgrading a suspension on a vehicle with electronically regulated dampers. KW is the only manufacturer that offers the solutions whereby the serial damper regulation is shut down and at the same time trouble code avoided. The functioning of the of the control unit remains completely intact.