You are probably right!
Funny though (and a real schoolboy error) thought I'd give it a go.. so in the car park, on a solid surface, drove forward, turned and drove forward again. Stopped, disengaged and the light remained on.... re-engaged, disengaged etc, ignition on, off, on, off, light still on... brilliant, found something and broken it within 5 mins..... remember something about transmission wind up.... pop it in reverse, back up a few yards and happy days, chime and light off...
Note to self.... only play with it on a loose surface!!!