Bosh dishwasher still full of water when finished

SOURCE: bosh exxcel dishwasher heater problem

Check with multi-meter for power on the heating element's tags. If it does get power, you should replace the heating element. In case of no power- you should replace the thermostat. Good luck!

SOURCE: no hot water in dishwasher

there is a heater in the base of the dishwasher . It could be this is faulty as you can still use the machine .
It does'nt matter that you have connected it to the cold water tap the machie should heat up the water it self.this is'nt a job you can do your self so you will have to call out an engineer sorry

SOURCE: Bosh dishwasher Class1xx

I think if u take the left side pannel off u will find the meatering tank clogged up which can not fill up the machine at diffrent levels.