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This is good info to have. Does it imply that you need to have the car running and in recirculation mode when you replace the filter or can you shut the car off once it's in recirculation mode and then replace the filter?
The reason I ask is that some systems have 'home' positions for flaps like these on power down and then revert to last setting positions when powered up again. If you shut the car down the potential exists for the flaps to move to such a 'home' position, I.E. away from whatever recirculation position it may have been set to when running.
Barry
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