International Prostar ABS MODULe light on!

Hi there,
i have a problem with my 2007 International Prostar, the ABS module light is on as well as trac ctrl and the yellow triangle. It's beeping and after a short while showing shut the engine message. Now, the same thing happened couple of moths ago and after shutting the engine down for short time it disappeared. I took it to the shop but since the warning wasn't active they couldn't tell me what was wrong. After that truck was sitting in the yard for several weeks. I moved yesterday and drove about 400 miles and today i started the truck and it did it again. I turned the truck on and of several times and was able to drive few miles but it keeps happening.
Can anybody help ?