I own a 2004 Santa Fe 3.5L AWD and recently when ever I drive at a highway speed 65mph or greater the ABS and Traction lights come on as well as the AWD indicator which lights up green and blinks. When this happens I feel a slight shudder in the drive line and I no longer have AWD, ABS or Traction control functioning. This condition continues until I stop and turn off and re-start the truck at which time everything is back to normal. It does not happen around town and I have had my local garage check for stored codes in the computer and there are none listed. We have also inspected the drive line on a lift and everything looks dry and fine. Please help as other than that this truck runs and drives great.