Ever since I've purchased my used 2002 Corolla back in 2006, the cruise control was working perfectly fine. Just recently, however, it seems to be acting up. Sometimes it doesn't seem to want to set at all, and sometimes I can set it, but then it will release itself after about a minute or so. I'm not getting any check engines or notice anything unusual when driving, and the "Cruise" LED does come on when I turn it on and goes off when I turn it off. So what could be the problem?