Five year old bosch shu33a dishwasher has a burning smell

It seems to run ok, but about 30 minutes into the cleaning process, we notice a burning smell that comes from the top of the door and fills the cabinet next to it. We took the door apart and noticed that some of the wires leading to the control panel left their imprint in the insulation inside the door. Could this be the source of the smell and is this a problem with this bosch dishwasher?