Lost acceleration, would not take any throttle input. Started to slow down, epc lite came on an started flashing. Speed continued to drop for the next 10 miles. Got off at the first exit that came up on the i5. As I came off the fwy I was down to 25 MPH. At the first lite I had to stop, the engine quit, I then turned right it was down hill so the car glided with no power steering or brakes. Made it into a parking lot to a safe place to park. Car would not restart. Had it taken by flat bed to our audi dealership 107 miles away. Dealer said that the high pressure fuel pump failed and contaminated the complete fuel system.
2010 Audi Q7 fuel system complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
Tdi high pressure fuel pump failure while accelerating from red light. This resulted in loss of power steering, power brakes and steering wheel locked while pulling car over. Had car been traveling at high speed or less experienced driver it would have resulted in an accident.
This is a tdi version of the q7. The high pressure fuel pump failed during normal use and sent metal parts through the fuel lines, through the fuel filter and into the combustion chambers. As a result, the engine ceased and we were left stranded in the middle of the road on a winding canyon road. The engine block was damaged; the crank shaft bent, the pistons damaged the heads and many other parts were destroyed. The car was repaired by an audi dealer and required all new fuel components (bumper to bumper) and a new engine. The car was in the shop for over a month.
As driving onto the highway, when accelerating to get to highway speed vehicle lost power went into limp mode and was not able to accelerate. Was almost rearended by tractor trailer because of this ( had to pull onto the shoulder to get out of the way). Also the glow plug indicator light started flashing and check engine light came one. Took the car to the dealer ( audi of fairfield ct) they found that there was a problem with the hpfp metal shavings in the fuel system and they have to replace the entire fuel system. They also said that it might be from putting gasoline instead of diesel fuel, but I am sure I have always used diesel as I kept all receipts from gasstations. They will replace the entire fuel system at no cost to me, under the warranty, but I think it is a problem that needs to be addressed! Thank you
Audi 2010 q7 tdi fuel filler problems. On several occasions, approximately 1 in 4 fuel stops (current mileage 9,200 miles), I have been unable to insert a fuel pump nozzle into the fuel filler neck on the vehicle due to a vertical bar just inside the filler opening. If fuel is dispensed, its is rejected onto the outside of the vehicle and ground. Possible fire risk. In addition, using the vehicle in urban and rural settings all over the western us, I have been low on fuel and unable to refuel the vehicle risking running out of fuel far from another station. Personal safety risk. Audi does not have any explanation for the problem yet it should be corrected. I have called the dealer and searched the web for information and/or a solution to the problem. Most recently, at a station at west yellowstone national park, I was able to overcome the locking bar with a knife and the fuel filler nozzle combined so I could release the bar and insert the fuel filler nozzle. Audi says it is due to damaged fuel pump nozzles at fuel stations but this does not hold true since it occurs at stations where nozzles are nearly new and perfectly round.
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