So to get back to specifics of 15B22...... this update doesn't fix anything, but rather just causes a check engine light/alert to pop up. So then what? Does that help the dealer troubleshoot the problem? Let's get down to brass tacks, how does this update help me? Because I'm reading a metric boatload of people are having huge battles with transmission problems and fighting the dealer for fixes, and yet others said they had no problems, the dealer applied the 15B22 update while they were in for other work, and now they have problems (example of this within the first couple pages)?!