Looking to identify engine control modules, coolant system components, and more? Explore detailed diagrams and instructions from Audi and Volkswagen. Learn about coolant hose routing, cooling system bleeding, and thermostat removal. Find crucial details on water pump, fuel pressure release, and engine identification. Discover harness connectors, heater hose vent holes, and leak detection pump hoses. Get expert guidance for on-vehicle service and component locations. Trust Audi and Volksw…
