Car Roof Cover, Weather Protection Sunroof Vehicle Ice and Snow Protection Cover Portable Automotive Exterior Roof Sun Shade Protector, Universal for SUV Caravan Pickup (59.1 × 49.2'')

Alternative thought before committing to the tint, if you are able to add a tarp securely to the roof, then you can actually see if the issue is the sunroof or the AC has an issue they won’t cop to or can’t diagnose. Then maybe a trusted VW mechanic in your are might be your next visit. edit: found this https://www.amazon.com/FALVFUN-Car-Roof-Cover-Protection/dp/B0GTV56GDV/ref=mp_s_a_1_6?dib=eyJ2IjoiMSJ9.dG4ktvRoTw6U5wP2Bp6kAoNi60mU9j9gBix4QK-EMZaAYaW72wkr1Dool9FZnyXcMpVSWP1eJtp0BgAkxPuQA5g1vaTTMQJOsuXQsxhM0CdSDb5qF-c3CSLPMcbLv54zq5tJsfd4LjdpO1yH9A_tlnD5UhY3L38xZ2xqKYXGmugHok5YzwgeMc3YAVr6mEvd8kVfngYpXSDbHRBKK5peCQ.n3sSb5FJ8PE3Sdg7-K28up23i2uPEBBCmcGDOy8AA-Y&dib_tag=se&keywords=sunroof+cover&qid=1780701119&sr=8-6#averageCustomerReviewsAnchor