Hi this summer is proving to be a sizzler!! and so it seems is my Engine ECU and gearbox ECU When the vans running they are both getting very hot!! Can barely hold on to them .. I can't believe they are ment to get this hot? They have no heat transfer fins built into their cases and i don't see any other cooling method?? Should there be some kind of fan under the dash keeping these units cool?? If yes where is the bugger?? ... Ps. Where are the main GROUNDS/Earths for the ECU.. I'm running a 2001 638 auto Vito thanks for your help I'm trying to stay kool but I'm nervous I'm frying the brains of my wagon!!