Audi Q7 Key Fob Failures: Signal Issues Revealed

I had a similar problem with my 2015 Audi Q5 last year and have some experience working on basic car electronics. The symptoms were nearly identical, inconsistent keyless entry and starting problems. After dealing with this frustrating issue, I took it to my regular workshop. They diagnosed a faulty antenna mount and damaged cable connection in the front bumper area. The car radio signal was getting interrupted due to a loose connection between the antenna and the main unit. The antenna repair involved replacing the connection cables and securing the antenna mount properly. Total repair cost was 95 Euro, including diagnostics and labor. The keyless functions have worked flawlessly since the fix. Before suggesting specific solutions for your Q7, could you share: Have you noticed if the issues get worse in certain weather conditions? Does the key fob have a fresh battery? Are there any other electrical issues present? Has the car been in any minor collisions or bumper repairs recently? This information would help determine if your issue matches what I experienced with the automotive antenna system.

Thanks for sharing your experience. At 130921 KM and no recent service, I should get this checked soon. The issues do seem worse in rainy weather. Just changed the key fob battery last week but problems persist. The vehicle antenna might be the culprit since its near the bumper area where I had a minor scrape last month. No other electrical problems noticed so far. Your repair cost sounds reasonable compared to what I expected for car antenna work. Will schedule a diagnostic check focused on the fm antenna system and connection points you mentioned.

Thanks for those details. The weather sensitivity and recent bumper damage you mentioned strongly align with my Q5 antenna issues. Rain affecting the performance is a classic sign of compromised antenna connections or sealing. Based on my repair experience, the minor scrape likely disturbed the automotive antenna mounting or wiring. These components are quite sensitive, and even slight impacts can create connectivity problems with the radio signal system. The repair process on my vehicle included: Full diagnostic scan, Inspection of all antenna connection points, Replacement of corroded wiring near the bumper, Resealing of the antenna housing, Testing signal strength after repair Since yours shows similar symptoms at a comparable mileage point, I would suggest focusing on the front bumper antenna assembly first. My repair took about 2 hours, and the signal interference issues completely disappeared after fixing the damaged connections. Just ensure the workshop specifically checks the antenna wiring near the impact area. In my case, what looked like minor exterior damage had actually shifted the internal mounting points enough to create these issues.

The symptoms with my Q7 match exactly what you experienced. The weather sensitivity and recent bumper damage definitely point toward the vehicle antenna system being the root cause. Planning to book it in next week and will ask them to focus on checking the fm antenna connections and wiring near where I had that scrape. A 2-hour repair job at around 100 Euro sounds much better than what I feared it might cost. As long as it resolves these frustrating keyless problems, it will be worth it. The car radio signal issues and keyless functions being affected make perfect sense now given how the antenna systems are connected. Will update the thread once I get it fixed in case anyone else runs into similar radio signal interference problems with their keyless systems. Really helpful to hear about a successful repair of such similar symptoms.