Within a week of buying a new citigo the PID would fail to connect to the mounting section. I realised that this happened when sunlight heated up the unit and by holding the mounting arm down or twiggling it recounted the unit for a few minutes before disconecting again. Tried dealer but after three seperate times the car was in for diagnostics got the usual - no faults found. Skoda services were of little help as they just requested the car go back in. Again - no faults found. Cooler weather and few if any problems. The weather is warming up again and problem returned. Anyone got a solution? The PID itself works fine, when it works.