SQ8 Tailgate Sensor Failure Disrupts Opening Function

Had the same tailgate motor issue on my 2018 Audi Q7 TFSI. The automatic tailgate would stop out of nowhere during operation and display errors. After troubleshooting, the electrical sensor connections near the tailgate hinge were found corroded, causing intermittent signal loss. The repair involved replacing the power tailgate control module and cleaning the electrical sensor contacts. The tailgate motor itself was fine, the main problem was the degraded wiring harness connector that feeds signals to the hall sensor. This is a known issue that can appear even with low mileage. The fix requires proper diagnostic equipment to identify which specific electrical sensor is malfunctioning. A jerky open tailgate movement typically points to sensor communication problems rather than mechanical failure. Would recommend having a specialized Audi workshop check the complete tailgate electrical system. They should focus on the wiring connections between the body control module and tailgate sensors. While not a severe mechanical issue, proper diagnosis is crucial since multiple sensors work together for the power tailgate operation.

Thanks for sharing your experience with the Q7 tailgate sensor fault. Dealing with the same frustrating issue on my SQ8 right now. Good to know it was mainly the wiring causing the problems and not the entire tailgate motor assembly. Do you remember roughly how much the repair ended up costing? And has everything worked properly since they fixed the sensor wiring and cleaned those connections? Just trying to get an idea of what to expect when I take it in. The unusual stopping and jerky movement is really annoying, especially with an open tailgate that wont close properly.

The repair shop managed to resolve the hall sensor issue completely by fixing a faulty cable connection to the tailgate motor. Total cost was 95 Euro which was reasonable considering the specialized vehicle sensor diagnostics needed. The automatic tailgate has worked flawlessly since the repair, no more jerky movements or unusual stops during operation. The open tailgate now moves smoothly through its full range without triggering any error messages. Turned out the sensor calibration wasnt actually needed, just that one damaged wire causing the intermittent connection problems. Much simpler fix than initially expected and definitely worth getting checked by a proper workshop that knows these electrical systems well. Makes sense to address these tailgate sensor faults quickly before they potentially cause more extensive damage to the motor or control module. The repair has held up perfectly for several months now with zero issues.

After getting your feedback, I finally took my SQ8 to a different repair shop that specializes in Audi electrical systems. The power tailgate issue turned out to be similar to what you experienced, corroded wiring connections affecting the sensor signals. Total repair cost came to 180 Euro, which included a complete diagnostic scan and cleaning of all sensor connections in the tailgate assembly. They found two damaged wires that were causing the intermittent faults. The automatic tailgate now works perfectly, opens and closes smoothly without any jerky movements or error codes. The whole repair took about 3 hours, and the shop did a thorough job testing the system multiple times before giving the car back. Really glad I asked here first instead of letting the dealer replace the entire tailgate motor unnecessarily. Saved both time and money by targeting the actual sensor fault.