So after a long nap, I went to start my '13 MTS this afternoon. I noticed that I have the ABS error message on the dash and wondered what could have caused that while it was sitting all winter. There are no other error messages, just the ABS. Towards the end of the season, I did a complete brake fluid flush, including the ABS module. I had heard that if you don't flush the brake fluid as recommended you could damage the module.