Non-NonRev, what happens at EWR on getting to car-rental lots when monorail service ends?

And, is it actually shutting down forever or just ending service to car-rental lots?

Last time I went in & out of EWR, as I came back to the terminal from the Avis lot, the monorail got to the next station in toward the terminal and stopped just short of where it should, so the doors wouldn't open. After about 10 minutes of the doors trying to open, they finally got them open & told a monorail full of passengers (and many waiting to get on) to get off..this one was now out of service..