There are other options such as the clutch switch
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Which is why reading the codes is always a good start
Caution triangle and start stop light illuminated | FIAT 500 (2007+)
Hi guys, just a quick one. My start stop light is on along with a small triangle with an exclamation mark in the centre (see PIC). It is a 2011 twinair and it runs very jerky in low gears (more than standard). Once in the higher gears it seems fine and the lights reset and dissapear when you...

Which is why reading the codes is always a good start