Mercedes S 320 CDI duo valve for heating and A/C. If this packs up, you will have constant heat coming from the side vents. Cheap to buy off Ebay. Also easy to replace just need not to forget to drain the coolant.
Mercedes S 320 CDI duo valve for heating and A/C. If this packs up, you will have constant heat coming from the side vents. Cheap to buy off Ebay. Also easy to replace just need not to forget to drain the coolant.