A6 Massage Seat Failure: Repair Tips & Cost Guide

Having some experience with luxury car electrical systems, I encountered a similar massage seat issue in my 2021 A7. The massage setting stopped working completely, and the seat switch became unresponsive. After initial troubleshooting, it turned out to be a loose connection in the wiring harness under the seat. The workshop diagnosed a cable connection problem affecting the seat motor functionality. The repair involved reconnecting and securing the wiring properly, which restored all massage functions. The total repair cost was 95 Euro, which covered diagnostics and fixing the connection. This is typically less expensive than replacing the entire seat motor or massage unit. Before heading to a workshop, you might want to check: 1. If all other seat adjustment functions work normally 2. Whether the massage setting can be activated through both the physical switch and infotainment system 3. The specific error code showing up in your system To provide more targeted advice about your A6 massage seat issue, could you share: The exact error code displayed, Whether other seat adjustment functions are working, If there were any recent modifications or work done on the seats, Whether the issue started gradually or suddenly This information would help determine if your issue matches the common switch failure pattern I experienced or indicates a different problem.

After performing a hard reset of the infotainment system and checking all fuses, the massage function is still not working. Other seat adjustment features operate normally, which suggests the issue may be isolated to the massage components. The error code B143987 appears consistently when attempting to activate the massage function. My A6 just had its first service at 54734 KM, where no issues with the seat motor or electrical systems were reported. The massage chair functionality stopped abruptly without warning, and no recent work has been done on the car upholstery or seat components. Given the switch failure pattern described, I will have the wiring connections checked as suggested. Could the warranty cover this type of electrical issue before pursuing independent repairs?

Based on the error code and symptoms you described, this does sound remarkably similar to my A7 issue. Since the other seat functions work normally, and the problem appeared suddenly, a wiring connection fault is likely the culprit rather than a complete seat motor failure. The error code B143987 typically indicates a communication fault in the massage control module circuit, exactly what I experienced when my wiring harness connection came loose. Since your car is a 2023 model, this repair should absolutely be covered under warranty. My repair would have been warranty-covered too if my A7 hadnt been just out of the coverage period. I would strongly recommend taking it to an authorized dealer since: 1. The fault involves the luxury car electrical system 2. The massage chair components are still under warranty 3. The error code matches known wiring harness issues 4. The problem affects only the massage function One thing to note, while my repair involved just reconnecting loose wires, some cases require replacing a section of the automotive seats wiring harness if wear points have developed. But even if thats needed, it should still fall under warranty coverage. Quick tip: document when the issue started and save screenshots of the error codes, this helps with warranty claims for electrical issues.

Since my luxury car is still under warranty, I will take it to the authorized dealer first. The error code B143987 showing up consistently with the massage setting issues seems to match the wiring connection problem others experienced. Its reassuring to hear this might be a straightforward fix rather than a complete seat motor replacement. I have documented the error codes and timeline as suggested. All other electrical functions in the car upholstery and seat adjustments work perfectly, which supports the theory of an isolated massage seat wiring issue. I will update once the dealer diagnoses the exact cause. Hopefully the repair will be as simple as reconnecting loose wires like in the A7 case mentioned. Even if they need to replace part of the wiring harness, knowing it should be warranty-covered gives me peace of mind about potential repair costs.