Q5 Power Tailgate Gets Stuck Halfway, Sensor Issue Fix

The automatic tailgate issue you describe matches what I experienced with a 2018 A4 Avant. The open tailgate would stop midway, similar to your symptoms. After diagnosis, it turned out the hall sensor had failed, causing the control module to receive incorrect position signals. The repair involved replacing both the electrical sensor unit and recalibrating the tailgate system. A garage with proper diagnostic equipment can handle this, it is not exclusively a dealer-level repair. The sensor calibration process is straightforward for experienced technicians who work on modern vehicles. The root cause in my case was a damaged wiring harness near the tailgate hinge, which created intermittent connection issues. The repair involved replacing the harness section and the faulty hall sensor. This was not a major mechanical problem, but required precise diagnostic work to pinpoint the exact fault location. These tailgate sensor issues are relatively common on vehicles with power lift systems once they pass 150000km. Getting it fixed promptly prevents additional strain on the tailgate motor and other components.

Thanks for sharing your experience with the sensor wiring issue. Dealing with a similar problem on my Q5 right now. The power tailgate symptoms sound exactly like what you described. Good to know its a common repair that regular shops can handle. Did you remember roughly what you paid for the electrical sensor replacement and calibration? Also curious if you had any other tailgate sensor faults pop up since getting it fixed?

Just got back from having this exact issue resolved. The vehicle sensor fault has been completely fixed, no more error codes or partial opening problems with the automatic tailgate. The mechanic found a loose connection in the hall sensor wiring that was causing intermittent signals. Total repair cost was 95 Euro, which covered fixing the cable connection and testing the power tailgate system. Much less expensive than I initially feared, especially since no parts needed replacement. Its been 6 months since the repair and the tailgate works perfectly. No additional sensor faults or issues have appeared. The calibration has held up well and the open/close cycles are smooth and complete. If your symptoms match what I experienced, it sounds like you might have a similar wiring connection problem rather than a failed sensor unit.

Had the repair done last week and wanted to follow up. Turned out my issue was more involved than just wiring. The mechanic found the hall sensor itself had failed, not just the connections. The repair bill came to 380 Euro total, 220 Euro for the new electrical sensor unit, 120 Euro for labor, and 40 Euro for the sensor calibration procedure. More than I hoped but less than dealer prices. Initially worried I needed a whole new motor assembly, so relieved it was just the sensor. The vehicle sensor system needed a complete recalibration after the new part was installed. Took about 2 hours total. Happy to report the power tailgate now works perfectly, opens and closes smoothly without stopping halfway. No error codes have returned. The sensor wiring all checked out fine too, so hopefully this fix will last. Good to know these issues are common enough that most shops can handle them. Saved quite a bit by going to an independent mechanic versus the dealership.