What causes the Anti-Lock light to turn on?

What is your question?

While driving my car this light comes on sometimes,and my car turns off in the middle of the street and all of the lights on the panel go crazy. Already changed the module and fuse box. No codes come up when we took it to the mechanic at the dealer. Only advice given from the mechanic is to wait until things get worse so codes will come up. I dont like that idea and it's dangerous driving a car that turns off at any given moment. Never had any other issues with this car. No one can figure out what is wrong. Sometimes it won't turn on