2009 Volvi S80 Turbo AWD. Both ABS (and DTSC) and BLIS lights are coming on, and its heat related (comes on if sitting in a hot parking lot or stop and go traffic). I can drive an interstate for hours with no problem. Both lights are coming on together. The ABS code is loss of communication. The battery, is new.. Electrical system checks good. My usually awesome mechanic replaced tthe wheel speed sensor and hub assembly with no change. So where do those two signals (BLIS and ABS) share an electrical pathway? Ground, fuse, some sub midule? Help