BMW E39: HVAC Panel Facelift
This is a minor item to facelift, but it was included in the E39 2001 model year refresh nonetheless. From 9/00 production, BMW replaced the REST button with a MAX AC button. But fear not, REST functionality is not lost! This article details how to properly retrofit the new HVAC panel and associated solar sensor. Objective: Facelift HVAC panel to add MAX AC button and functionality.