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Discussion Starter · #1 ·
2000 S500 with intermittent heater/ac blower. Sometimes it works, most of the time it doesn't.

Looked over the forums and concluded it was the regulator, but I put a new one in and it still does the same thing.

The motor itself works fine in bench tests and I even took it apart and replaced the brushes.

Any ideas on what else it could be?
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