What does this mean? I was driving around in Branson today and the ABS light came on. The wife looked in the owners manual and it said to stop, kill the car and the light would go off. It did and it stayed off until I killed the car again, this time it stayed on.

Is it something to worry about? If it sits the light stays off when you start up again for about 30 minutes and then it comes on again.

Help.