Had a glitch with my battery in November 17. Car failed to start on ramp during MOT. Diagnoses low battery charge.
Funny old thing a few weeks before had decided to leave aircon (not fitted) button pressed in as doing this means when you put the heater fan on a tell tail light illuminates as a reminder you have the fan on.
Well switched it off and charged the battery. No problems since (touch wood) even after leaving the car without trickle charge for in excess of 6 weeks.
Coincidence maybe, not sure if mot bod attempted to start the car with one turn of key, rather than on 1st position wait for the vibration tach reset etc to finish then start. Someone can explain but the “system” does some sort of reset in those few seconds. He may therefore tried to start it 1/2 way through the reset.
Having said all that, batteries can be fickle things.
