RSQ3 Transmission Nightmare: Gear Selector Dead, Slipping

I had nearly identical issues with my 2019 SQ3. As someone with some experience working on modern vehicles, I initially thought it was just the electronic display system failing. The main symptoms matched exactly: unresponsive gear selector, transmission slipping, and the gear indicator completely stopped working on the dashboard display. The grinding noise during shifts was particularly concerning. After attempting basic diagnostics, I took it to a certified workshop. Their diagnosis revealed a defective control unit that manages the communication between the gear shift mechanism and transmission. The electronic display issues were actually a symptom, not the root cause. The repair involved: Replacing the defective control unit, Reprogramming the new unit, Full system calibration, Testing all gear selector functions Total cost was 1000 Euro, but it completely resolved all symptoms. The transmission now shifts smoothly, and the gear indicator works perfectly. Before suggesting specific solutions for your case, could you share: Current mileage, When did symptoms first appear, Any recent service history, Whether the problem happens more in specific driving conditions, Which error codes are stored This information would help determine if your issue has the same root cause as mine.

Thanks for sharing your diagnostic findings. Just had my RSQ3 serviced at 185251 KM. The sensor problem you described matches my experience perfectly. The gear selector issues turned out to be less severe than initially feared. The workshop found the shift knob sensor was failing intermittently, causing communication errors with the gear indicator display. They performed a software update and replaced the faulty sensor assembly. The grinding noise disappeared immediately after the repair. Total repair cost came to 650 Euro, including diagnostic time and parts. The transmission now shifts smoothly and the car dashboard displays gear positions correctly again. If others are experiencing similar symptoms, its worth checking the sensor connections before assuming worst-case transmission problems.

Thanks for the update on your RSQ3 repair. Your experience aligns perfectly with what I encountered, these modern transmission systems often have simpler solutions than we initially fear. The shift knob sensor issue you described is actually becoming a known problem on these models. The intermittent sensor signals can definitely trigger those concerning grinding noises and instrument panel display issues. My repair was more extensive with the control unit replacement, but its good to know the sensor replacement alone resolved your case. For others reading this thread with similar symptoms, checking the sensor problem first makes sense before assuming major transmission repairs are needed. A failing sensor can mimic serious transmission issues by disrupting communication between the gear selector and the car dashboard systems. The fact that both our cases involved electronic gear indicator issues rather than mechanical transmission problems is telling. These modern cars rely heavily on precise sensor data to manage gear shifts, so even a minor sensor malfunction can cause alarming symptoms. The price difference between our repairs, 1000 Euro versus 650 Euro, shows how crucial accurate diagnosis can be for these transmission-related issues.

Just had my RSQ3 serviced at 185251 KM and can now confirm the transmission issues have been fully resolved. The sensor problem turned out to be exactly as other forum members suggested. The gear selector issues were far less severe than I initially feared. The workshop traced the problem to a failing shift knob sensor that was causing communication errors with the gear indicator display. They performed a software update and replaced the faulty sensor assembly. The grinding noise that had me so worried disappeared right after the repair. The total repair came to 650 Euro, including diagnostic time and parts. The instrument panel now shows gear positions correctly and the transmission shifts perfectly smooth again. If others encounter similar symptoms, definitely worth checking the sensor connections before assuming major transmission problems. Really appreciate everyone who shared their experiences and helped point me in the right direction.