Audi Q5 Fuel Pump Failure Symptoms and Repair Tips

Had similar symptoms with a 2013 Audi Q7 3.0 TFSI. The automotive diagnosis confirmed it was a failing fuel pump control module, not the pump itself. The electrical connection had corroded, causing inconsistent fuel delivery to the injectors. The symptoms matched exactly: hard starts, rough idle, increased fuel consumption, and engine management light. The fuel system was sending incorrect signals, leading to improper fuel injector timing. This was a significant repair requiring specialized diagnostic equipment. The car mechanics needed to remove parts of the rear seat to access the module. The issue got worse over time and eventually caused complete stalling. The fix involved replacing the control module and cleaning all electrical connections. The fuel pump and injectors tested fine after the repair. It took about 4-5 hours of labor, but resolved all symptoms completely. Important to note: Getting this diagnosed early prevents additional fuel system damage. When experiencing these symptoms, avoid driving long distances until repaired, as inconsistent fuel delivery can damage other components.

Thanks for sharing your experience. It sounds exactly like what I am dealing with right now on my Q5. Your description of the symptoms matches up perfectly with my auto repair situation. Did the fuel pump control module repair solve all the issues completely? Getting early car mechanic intervention seems wise to prevent the car performance from deteriorating further. Before I book an appointment, would you mind sharing what the repair cost you? Also curious if you had any related problems pop up since the fix or if everything has been running smoothly?

After getting the fuel pump control module fixed at the mechanic, all the performance issues cleared up completely. The repair was much simpler and cheaper than expected, just 95 Euro to fix a faulty cable connection to the control module. No need for any major component replacements. The car performance returned to normal immediately after the repair. The engine starts perfectly now, maintains a steady idle, and fuel consumption is back to standard levels. The check engine light cleared and hasnt returned. Its been several months since the fix and the fuel system continues working flawlessly. No new issues have emerged. Getting it diagnosed early definitely prevented more extensive fuel pump or injector damage that could have developed. For anyone facing similar symptoms, having the electrical connections checked first can save significant repair costs before assuming the entire fuel pump needs replacement. Modern fuel delivery systems often have these kinds of control module connection issues that are relatively straightforward to resolve.

Thanks for the advice. Finally got my Q5 checked out yesterday and wanted to share how it went. The mechanic found exactly what was described, a corroded connection in the fuel pump control module causing the fuel delivery problems. The total repair came to 120 Euro including diagnosis and labor. They cleaned all the connections and replaced one damaged wire. Only took about 2 hours to complete everything. Picked up the car this morning and the difference is incredible. No more stalling, engine starts right up, and runs smooth as new. The fuel consumption has already improved on my drive home. Really glad I got it fixed before any serious damage occurred to the fuel injectors or other components. Should have done this weeks ago instead of worrying about finding the right shop. The engine performance issues were stressing me out way more than the actual repair ended up being. Thanks again for helping me understand what to expect.