Additional information, after not being able to start the car on Sunday. I went to tow it home, but it cranked up to my surprize. The next day it started fine in the morning and I drove it around for several hours. I then stopped the car at the MickeyD and it would not crank. When I got out of the car I used the remote to lock the car, however the car did not lock. I thought the remote was not triggering the alarm and other systems correctly, and this was causing the car not to start. So I replaced the batteries in the remote,but no luck.

Lucky, I was able to have the car towed to my mechanic and he observed how the car was not functioning. The next day however, when he went to diagnose the problem the car cranked.

Based on his observation and some research it seems like the problem maybe the All Activity Control Module(ACM). Has any had this problem and was it the ACM. How hard is it to replace the ACM?