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Stock Problems/IssuesDiscussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.
Many of the aftermarket regulators and window motors are wired backwards....
Fix is a good regulator, or swap the wires in the plug on it (if possible). eBay parts can be cheap....but they come with issues.
This issue has appeared MANY times since I have been here....
Usually the culprit is an off brand regulator from e-bay or Amazon.....
It happens in spurts.....a quick search will yield many similar postings....same issue.
Some basic rewireing if one is handy or a different unit fixes it.