The other day I was driving along and I changed the shifter to C mode.
Immediately the dash lit up with warning lights. The [CAR + !] and the Turtle came on. I was just approaching a roundabout at the time. The good news is that the car did not just stop, the power was reduced, and I drove through the roundabout until I could pullover.

I turned the key off and on again (reboot like windows) and the car was working normally again.
I tested again later in a quiet road and it still had the same problem.
The next day I went out with my camera and videoed the dash while I selected C mode. What I noticed is that the display icon went from B to C and back to D (selector in C) I then new what the fault was, which I later confirmed by looking in the workshop manual.
The drive selector switch is a dual pole switch, when a mode is selected both channels of the switch have to report their position. If only one switches then it throws the error.
Due to never selecting C mode in a year or so, the contacts in the switch must have tarnished a bit, preventing it making contact.
Solution -
I just parked the car and moved the selector back and forth half a dozen times from B to C and the switch began working normally again.
The I-Miev is a great car.
