will not stop

Hi. Sounds like you may have an issue with the control board. p# 440671. Make sure the heat circuit is not faulty. If a part in the heat circuit is bad it can cause the unit to run a very long time. Also, check the Turbidity sensor as well. I have attached a video for you. This can cause the unit to run longer than normal. With this running over night it does not sound like a heat or sensor issue. If the unit is getting near the end of the cycle and just stays there and runs, it there could be a leak. Is the unit continuing to drain when it will not shut off? If so check for a leak. There should be a leak sensor in the base of the unit that will recognize water leaks. Run the diagnostic mode and see what kind of error codes you have. This will be key to finding out what is going on. I could not locate the tech sheet on this one with it being a Kenmore built by Bosch. I attached a tech sheet for a different, earlier model. Also, attached are a lot of our Bosch dishwasher videos.