Interesting thread.. I'm getting all three lights every time I take my car to the carwash.. Scanned for codes.. Nothing . Lights shut off after I get home and restart the car later.. I'm sure it has to be the wheel sensors??
if it does it every time your at the car wash, it has to be water related, i would hose the car down one area at a time until the problem comes back, then you will know which corner of the car is having the problem.