How to Troubleshoot a 2003 Audi Allroad Quattro

1. Make sure your Quattro is able to start and run normally. A redesign in 2003 changed the fuel-pump components. Unfortunately, this change was for the worse. The fuel pump may fail prematurely. This problem is covered under a factory recall, and the dealership will replace this item at no charge to you.
2. Check for low oil pressure. Some Quattros in 2003 may experience low oil pressure. Unfortunately, this is due to the turbocharger setup from the factory. The turbocharger gets warm and may cause oil in the engine to coagulate and form sludge in critical areas. This may interfere with the oil pickup in the crankcase, which, in turn, can affect lubrication of critical engine components. There is no known recall for this issue; however, if the Quattro is experiencing low oil pressure, have the turbocharger system checked and serviced immediately by an Audi dealership.
3. Check for oil leaks on the seals and gaskets of the camshaft adjusters if you have a 3.0-liter engine on your Audi. Some Quattros were fitted with an optional 3.0-liter engine. The seals and gaskets on the camshaft adjusters may prematurely fail. Although this is not covered by a factory recall, have this problem serviced immediately by an Audi dealership.