Getting "anti skid/ABS service required" in msg window plus ABS light on right side of instrument panel everytime I drive the car for about a wk. And eveytime I turn the car off-long drive or just around the block and then the nxt time I start it, abs light is on, drive off, hear abs module do self test and light goes off all is fine. Only to come back mins later. Did notice that when cruise control is engaged with abs light on, car will surge. Tested it when light was off and cruise works fine. Is there a code read out or how does one determine if its just a wheel sensor (hope) or the module (really hope NOT) Any help or guidance is appreciated and thanks.