Whoa, that one is difficult. A while back, I experienced a similar situation with my Audi. I finally took it to https://navitex.co.uk/, and they saved my life. They resolved the problem with the screen's sensitivity to moisture and are specialists with high-end brands like Lamborghini and Audi. Plus, points for them handling amplifiers. Your pal might be the ideal candidate for the position if they still have issues.