The symptom is the loss of voice commands while the car can still be used as the bluetooth connection to the phone. Parts Replaced or Added Part Quantity ASSY,AUTOPILOT.ECU,3.0, MSX-FUSED(1655000-70-G) 1.0 ECU 3.0, what is this? I was supposed to have a mobile service tech fix a problem with the 12 volt battery sensor. When he asked me for the date and time of the failure I gave him that info and told him the voice commands had stopped working. That required a visit to the service center and he created a service center visit instead. This is what they want to replace. While it may address the voice command issue, I don't think this will address the 12 volt battery problem. He referred to this as an "upgrade". Is this a newer design than what came with my X delivered in Aug '18? Meanwhile I'm pretty sure the info in the car's log is gone with the delays and I see no sign anyone downloaded it at the time of the original call or since. That's a recurring pattern. Intermittent problem, create time stamp for data buffer, no one downloads info, info gone so they won't fix anything.