The AMK compressor like other air suspension compressors can typically fail around 80k-120k miles. The piston seals on the piston usually wear down leaving the compressor to be inefficient.
Usually air suspension error with the car not lifting due to the pump not giving out any air. You will also get fault codes relating to the air compressor.
We have manufactured a set of repair seals and a replacement aluminium cap as sometimes removing the screws in them can snap. Note that this is not a particularly easy repair like our Wabco and Hitachi units. You will need access to a press at times and be able to leave the compressor overnight to soak in plus gas to loosen the electrical unit before pressing it out.
X1 Repair kit only for the AMK units. This is not a sale for the complete compressor, only the internals.