May 2021 Audi S6 2.9T, ACc adaptive cruise control, head-up display, air suspension, ventilated and heated seats, BO sound system, 21-inch wheels, model number 019213. Inspection revealed: left rear panel repair, slight deformation of the rear bulkhead. Repairs included: tweeter not working, engine malfunction report, all four wheels repaired, dents in the left front and right rear doors, missing clips on engine compartment sound insulation, and replacement of the driver's side light housing.
If there is a minor leak in the lines due to bumps, it is possible that the cooling may not work upon arrival. This is a normal physical loss. The cost of vacuuming, pressure testing, and recharging refrigerant at a local auto repair shop is low and is the buyer's responsibility.
We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.
Do not use a high-pressure water gun directly! The high-pressure water can instantly damage the fragile aluminum fins of the condenser, leading to a permanent decrease in cooling efficiency. We can only use a low-pressure air gun or a soft brush for surface cleaning.
