I just bought a 1999 Volvo S80T and within 1000 miles the following warning lights have come on, ABS, SRS, Traction Control. I had the ABS control module replaced and warning lights were gone for about 200 miles. Now I get an orange warning triangle indicating I need to safely pull over and restart engine. When I do the light goes off. Engine runs smooth although transmission at times seems confused about whether to up or down shift. Any ideas???