The EC135 battery overheat drill originally required the pilot to land, lock the controls, get out and inspect the battery for signs of overheating. It changed with the introduction of current European legislation.
Oh yes, and the cyclic lock was removed after someone in a distant part of the World tried to take off from a rooftop helipad with it still locked!
Before the UK takes all the blame for over-regulation, I should point out that what we work to now, is the illegitimate love child of 30 odd European legal systems.
TeeS