The auto wipers can't be turned off and the sensitivity dial does sod all on mine,
no matter where I turn it the damn things have a mind of their own, sometimes one drop on the windscreen sends them spastic,
other times it can be pissing it down and the wipers won't come on at all, I do know that turning the wipers fully on then back to intermittent
usually fixes their insane moods, but coming to a standstill at the lights usually means they stop working until you set off again.
In the 7 years of owning my Clio, I still haven't really figured the damn things out.