You have come close to setting a record for life out of one of these FD DWs,  unless you just want to throw money and your time into this one I would shop for a new DW.

These DWs also have a host of other problems waiting for you, The main wash pump motors are very short lived, and then you have the likely hood of broken heater mounting nuts which will cause leak underneath and shorted heater, bad drain pump, bad inlet valve, and just general things like rusted racks.

If this DW has had normal once a day use it is probably close to the end of its useful life, if it has had much lighter use you may be able to push it along for some years. It is a shame they used such short lived components because the performance was pretty good, the worst thing about these DWs was the messy filter in the bottom.

John L.