Thanks again everyone for your suggestions and insights.

The original owner is sending us the owner's manual and spare key.

We just checked the brake light switch and it passed the preliminary pedal depression tests. We will also check the relay board.

We will perform the steering wheel rotation sequence the next time the BAS/ESP light is on.

The light came on again today driving straight at about 35 MPH.

The Autel meter should arrive soon. So we will make use of that, if possible. Either way, I will report on the meter's usefulness.

John&Terry