So good was the original Q7 design that it lasted for close to a decade, with the second generation not being released in Europe until May 2015, and imported to Australia from September that year. The gen-two Audi Q7 was sensibly designed as a family wagon, though it still retained good off-road traction using the latest high-tech electronics. The V8 4.2 TDI diesel engines are exceptional worrying reliability. Some of them had problems with the consumption manifold and throttle. All bearing of axes, rods, and levers inside were made of plastic until 2009, which wear out really rapidly (40-50,000 miles). As a result, reduced power and torque because of various spaces and skews. engine won't turn over, won't start in the 2007 Q7. 2. keys automatically lock car in the 2015 Q7. 2. squealing from brakes in the 2017 Q7. 2. electronic stability program (ESP) malfunctioning in the 2007 Q7. 2. sunroof drains clogged in the 2008 Q7. The vehicle use's 1 quart a week (every 350 to 500 miles), i had the pcv/oil separator replaced and the ecu software updated; the problem continues. Also, it keeps throwing code: P0491 secondary air injection system bank 1 (mine maybe carbon buildup); Audi NA will cover the carbon issue under warranty if the vehicle has approximately 120k miles. Q7 MK 1 Discussion - Engine Control Module not communicating - 2007 Q7. Car has been the best we ever had. Now dead, 12/24: A couple of times the engine would intermittently not crank, but no errors. 12/25: Pulled and reset the four relays under the hood in front of driver (2 pc. 614 and 2 pc. 373). . Q7 MK 1 Discussion - 2007 Q7 4.2 FSI Oil leak - Hello all, my problem is as the above stated. Massive engine oil leak from the front crankshaft seal. I replaced it already 2x; still leaking!! (Crank is clean and has no damage) I changed the oil level sensor since that was leaking too. I read about a leak on the oil for all Volkswagen and Audi vehicles available at the time of publication. Not all of the codes apply to the vehicles covered by this manual. DTC P-code Description 16394 P0010-A- Camshaft Pos. Actuator Circ. Bank 1 Malfunction 16395 P0020-A- Camshaft Pos. Actuator Circ. Bank 2 Malfunction 16449 P0065 Air Assisted Injector Control Range 2008 Audi Q7 155,974 mi, Visitor. Check engin light blink when mash down on gas it say cylinder 7 misfire. 2008 Audi Q7 62,000 mi, Tom TN. Faced with the same problem with misfire. Fault codes: P0300, P0301, P0302, P0304, P0305, P0306. These codes are for cylinder misfire. At odd times 7 at low RPM (below 3000), the engine struggles to stay at Audi Q7 Vehicles With This Problem. 4 model years affected. 2007, 2008, 2009, 2011. Average mileage: 96,062. (45,000–177,500) Check Engine Light Diagnosis & Testing : $143 -$180. The average cost for a Audi Q7 Check Engine Light Diagnosis & Testing is between $143 -$180. Learn More. Search For a Specific Car Problem. There are six models available for the 2012 Q7: Premium and Premium Plus. 3.0-Liter Supercharged V6 Gas. Horsepower: 280 @ 4,920 rpm. Torque: 295 @ 2,250 rpm. Fuel Economy: 16 mpg city/22 mpg highway. TDI Premium, TDI Premium Plus and TDI Prestige. 3.0-Liter V6 Turbocharged Diesel. Horsepower: 225 @ 3,750 rpm.

audi q7 4.2 tdi problems