I think js is correct. . .
you will never see it operate in your lifetime. The temp of the bimetallic strip (bms) is set to high to active the vfc at 'normal' temps.
You can remove it easily (see Menu #19) and see the temp tests (menu #20). But if by inspection, the bms looks the same, don't waste your time.
The 'mod' described in #19 will force it work. It does work well.
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Regards . . . . JimF
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'94 S500 Cpe
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