They don't work that way. They are computer controlled.

I'm sure there is a power lead you can usually tell from the size of the wires, but when they fail it's usually the motor inisde.

Almost always they fail intermittently at first and usually will lock but only unlock 4 of 5 tries for example.

What are your symptoms?

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)