(07 Jul 2014, 3:39 pm)aureolin wrote Is that standard across all Citaros?
Nowadays it is.
I think it must be as a result of constant complaints about the air conditioning on the Mercs and windows being locked.
I know that all the windows used to be locked, but now they're kept unlocked for people to open. As such, the air conditioning doesn't work whilst the vehicle is in motion - it has to be stationary for it to work.