I just purchased a c220 cdi 2000 from italy. my intrument cluster reads taxi electrics defect (visit workshop) when this comes on my a.c shuts off and other electric components seizes to work. star corrects the problem when you recode it as a taxi but overnight its as if the car resets itself and comes up with the same malfunction message on the intrument cluster in the mornings. anybody with ideas to curb this. kind regards