The service with Bosch is this. They are built inside out, with no
easy access to do anything BUT replace the solenoid fill valve.
Everything else requres COMPLETE disassembly, which can take hours,
and parts are expensive. Mine had a board failure at just under 1 year
old, board 500 bucks.
Fortunately it was still under warranty, a month later the water level
assembly went bad, hundreds of bucks in parts and labor, covered under
6 months later a board failed again, to the trash it went.
best washing dishwasher i ever had, and the most troubles too, it was
under 2 years old when i called it dead
the only plus of this? they are designed to never leak, they cant
but bend over if it breaks