What specifically is failing?
On the door latches I'm not sure, its just not catching. If it does catch it only shuts half way. It's intermittent for sure, it can not latch 5 times in a row or semi latch and then finally latch. Or it'll latch first try for a few times in a row.
For the back it stays "locked" unless i pull up on the external lock and try to open the door handle a few times then it'll unlock.