I had one of the lights going on and off. Tried to fix it. My fix stopped it from going on. I ordered the new strip from BMW Parts - Genuine BMW Parts and Accessories - Save Money The stip, gasket and rubber actuator totaled $116+ including shipping. As suggested, got the part numbers from realoem.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas