In this video we cover everything we can think of that can be problematic with this particular unit, both common problems and uncommon problems. Also here is a link to all parts for this generation moto: https://ebikemotorrepair.com/parts-identifier/bosch-active-performance-line-cx-gen-2/
also if you are a smart you will simply send it in to us for service and overhaul and here is the form for a service ticket: https://ebikemotorrepair.com/repair-overhaul-service/