I have a 2012 Tundra, new brake pads were put on, shortly after the ABS 4wd lights in the dash came on and stay on while the vehicle is not in 4wd. Can anyone tell me what's going on ?

What is your question?

Problem stated above is constant.

What makes this problem better or worse?

all the time.

How long has your 2012 Toyota Tundra had this problem?

roughly three weeks, it hardly gets driven.