Step 2 – Check for loose wiring. A cable may just need to be tightened. If you experience issues with the speakers sometimes working, or even the display that semi-functions, then check the connections. A wire connector clip could have broken off, or loosened, so grab your radio keys and pull out the head unit. 2005 Audi A6 2005 2.4 Pricing and Specs: 3.0 TDI Quattro: 3.0L, Diesel, 6 SP AUTO 2005 Audi A6 2005 3.0 TDI Quattro Pricing and Specs: See all 2005 Audi A6 in the This article applies to the Audi A6 C6 (2005-2011). Late model Audi A6 vehicles feature Direct Injection (DI) engines. In this type of engine, fuel is sprayed into the combustion chamber of the engine under high pressure. The result is an increase in carbon deposits, an issue that becomes increasingly problematic as the engine accumulates miles. The oil level sensor on the Audi A4 uses the temperature of the oil to determine the level of oil in the tank. These sensors are prone to failure and the whole system can be a source of frustration leaving you staring at the yellow oil light. If your oil level light comes on the first thing you should do is check the fuse for the sensor. 2003 A6 4.2L. Similar problem - Car running very warm in stop and go traffic. AC also blows warm in hot weather during normal city driving. Once I get up to highway speeds the coolant temp drops back to normal and the A/C blows nice and cold. Both the aux cooling fan and the A/C condenser cooling fare not turning on. Quartz Gray Metallic 2011 Audi A6 3.0 Premium Plus quattro quattro 6-Speed Automatic with Tiptronic 3.0L FSI V6 DOHC ACCIDENT FREE CARFAX REPORT, SERV AutoCheck Vehicle History Summary Accident What to look for when buying a Audi A5 2007 - 2016, covering common problems to check for and overall vehicle reliability. Audi A5 2.0 TDI Black Edition Euro 5 (s/s) 2dr Audi A5 3.2 FSI V6 What are some of the audi a6 3.0 Tdi quattro 2005 problems? Answer: The most common 2005 AudiA6 3.0 TDI problems include electrical issues as well as chain tensioner problems. The main electrical issues in the car are usually caused by ECU and alternator problems. Emissions revision gets them down to £245 on road tax. No real difference in performance, later 240 PS lump seems slightly more refind (although the 3.0 was excellent to start with). haven't done With the complex design of the Audi A6, especially the Quattro AWD models, that type of noise can be a tire, a wheel bearing, brake related, axle/CV joint, differential, or even transmission issues. Even just bad control arm bushings or loose bolts somewhere can cause a rattle at speed, which sounds rotation related. ikgg.