There are almost a 1000 posts on this problem to date. Has anyone had a hole, ie: an actual perforating hole through the aluminium panel that would affect the structural integrity of the elevating roof or front roof panel. Pictures would be good.
The reason I ask is I have owned Land Rover Defenders for a number of years. These are prone to aluminium galvanic corrosion but I have yet to see structural destruction or weakening of an aluminium alloy panel. Surrounding steel work and the steel chassis members - a totally different story and that is proper, destructive, corrosion.
My California is built and I will pick up in December. I will check for the corrosion prior to 3 years, or if I see it in writing from VW prior to 6 years and if present they will repair and if it comes back then the local body shop can repair thereafter if I cannot manage it myself.
What will really make a difference, well it does on Defenders, ACF50 spray under the rubber/metal roof seal to displace the water that must be present to facilitate the corrosion between the steel and aluminium roof. :smile