Stability Control Problem
 

Hey guys. My volvo s40 2003 has a big problem. Well i think it is. Everything is fine. I will be driving the car its great, but then all of a sudden the stability control light comes on and i cant turn it off. And plus its not winter its summer time. I turn off the car turn it back on and it flashes again. I turned off the car ten times once and it finally went away. Does anyone know the problem for this? and maybe a solution. Thanks greatly appreciate it.