Yeah once I though about that the low-trac is traction control, mine never comes on, its err disabled
It doesn't take much for the ABS to come on. NOT stopping could be several things. Do the pads make a grinding like they are going? The hubs typically throw a light when those are bad. Check your fluid. Won't hurt to do your pads and rotors but they usually make noise. It stops fine when the ABS does not come in would indicate that the ABS itself has an issue. Start with fuses. from there I'm not sure what/ how to check things. Good luck, let us know what it is if you find out.