Sc1onxd

I have a 08 xD with 134,000 miles. I live in the northeast and in March I was driving through a muddy road and my car was stuck for a brief moment and after recovering I noticed that my ABS and brake lights had both come on. They were only for a day or two before shutting off. Periodically during the months of April, May, and June the lights would come on and only last until I shut my engine off. At the end of June, after a 500 mile trip, both lights appeared again and haven't shut off since (today marks one month). Has anyone else experienced this?