This happened to me twice and it was NOT FUN at all to squeeze two kids and wife through the driver door for two weekends !!! thanks to Downtown BMW for doing such a shitty job !!
the first time they only replaced 2 actuators even though I told them that this is a known problem and they needed to replace all 4 actuators !!! sure enough one of the other 2 actuators they didn't replace blew up just a few weeks after !!! this second time BMW Downtown Toronto replaced all 4 actuators (so they say) but in doing that they screwed up one of the rear doors which can now only be opened from inside !!! Imagine the fun holding a baby and trying to open the rear door from inside !!!