How does the 2 port pump work? One side is pressure for the lumbar seats and is connected to the trunk and gas lid. The vacuum port has three connections. Does the pump motor reverse to provide pressure to the seats?
I repaired or tried to repair the pump with epoxy on the shaft and rotor drive. It does not appear to be working to well after a couple of days. Now the two front doors lock with the key but not the rear doors. This makes me think the pump is running(I can hear it) but maybe slipping and not providing enough vacuum to operate everything. I assume the pump is controlled with a timer so it will not run indefinitely if a line or devise is leaking in the system. Still looking for the correct pump but not having any luck now even for a new one.

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Handyjay