Need model no engraved in top of stainless steel door really. But most Bosch dishwashers the heater assembly needs complete strip down of machine to reach it not a diy project. You can see it by removing the right side panel but it wont come out from there. Problem could be same answer as i gave for question above yours (Neff itegrated dishwasher). Also could be faulty control unit not turning it on.
Kenjo
April 2012
Automatic Answer
We may have found other answers which could help you.