SMART FORTWO CABRIO Operating Instructions Manual page 45

Engine check indicator light
It lights up:
when the ignition is switched on.
> Indicator light goes out after the
engine is started or after 10 seconds
if the engine electronics are func
tioning properly.
If it comes on during a journey:
Take the car to a qualified specialist
workshop, e.g. a smart center, without
delay.
Instrument cluster
Blind date 43