Audi RS3 GPS Signal Loss: Antenna Failure Alert

Having some experience with car electronics, I faced a very similar GPS signal issue on my 2017 RS4. The symptoms matched exactly what you describe, total loss of navigation functionality and error codes in the system. After troubleshooting, my workshop found a defective car GPS antenna was the root cause. The antenna connection had deteriorated over time, even though there was no visible external damage. The complete repair, including parts and labor, cost around 200 Euro. The fix involved replacing the GPS antenna module and recalibrating the navigation system. Since the repair 8 months ago, the vehicle GPS has worked flawlessly. To help further with your specific case, could you share: Have you noticed any correlation between weather conditions and GPS issues? Did the problem start suddenly or gradually? Are you getting any specific error messages on the display? Has there been any recent work done near the antenna area? Knowing these details would help determine if your RS3 is experiencing the same antenna repair issue I encountered.

Last service at 92666 KM. Thanks for sharing your experience with similar GPS signal interference issues. Your feedback about the antenna is particularly interesting since my car navigation also stopped working quite abruptly. To answer your questions: Weather seems unrelated to the issue, The problem appeared suddenly after a cold start, Error code points to GPS signal loss, No recent work was done in that area I will schedule a diagnostic check focusing on the car GPS antenna. The similar repair cost on your vehicle seems reasonable if it resolves the navigation system problems completely. Would you mind sharing how long the repair took in your case? Just trying to plan ahead for potential workshop time.

Thanks for providing those details. The repair on my RS4 took about 2.5 hours total. The bulk of that time involved accessing the satellite connection components and running system diagnostics after the new antenna installation. The symptoms you describe, especially the sudden onset after a cold start, match my experience exactly. The vehicle GPS issues showing up abruptly rather than degrading over time is actually quite typical for antenna failures. Since your mileage is similar to what mine was when the problem occurred (I was around 90000 km), and the error behavior matches, Im quite confident youre dealing with the same antenna defect. The good news is that once replaced, these new antenna units seem much more reliable. As mentioned, mine has been working perfectly for 8 months now with zero signal interference issues. One tip: make sure the workshop performs a full system recalibration after the antenna replacement. In my case, they initially skipped this step and the navigation system needed a second visit to get it working optimally. Let us know how the repair goes, it would be helpful to confirm if the antenna was indeed the culprit in your case too.

Thanks everyone for the detailed input on the GPS antenna issue. I really appreciate the thorough responses, especially about the repair time and calibration requirements. I scheduled an appointment for next week to have the car GPS module checked. The 2.5-hour repair timeframe helps a lot with planning. I made sure to specifically mention the antenna repair possibility and the need for system recalibration after replacement, based on your experience. What convinced me was how closely your symptoms matched mine, the sudden failure after cold start and similar mileage when the issue occurred. The 200 Euro cost estimate also helps set realistic expectations for the repair. I will update this thread once the workshop completes the diagnostic check and confirms whether the GPS antenna was indeed the problem. This information could help others who experience similar navigation system failures in the future.