Has anyone had an issue with there Traction control on a BF Mk11 F6 auto? Had a CAPA 98 octane tune on it via a X3, but flashed back to stock now. Mine is only too happy to spin the rear tyres with the traction control on, the light does come on but does not flash (should it?)and stop wheel spin... I find that soon after if I check the DTC codes, it has logged code, U0100 (Lost Communication ECU/PCM A) Both with stock tune or CAPA tune.. It will not bring on any engine check light and does not drive any differently, but I'm sure it shouldn't do it.. I can clear the code OK with one of several devices I have, but seems to come back if the road is wet and the car breaks traction for a short period, (more so with the CAPA tune on). Thanks guys for any ideas or past experiences with this problem Peter 0418 338 005