VW Eos Stability System Failure Due to Faulty Sensor

I had a similar issue with my 2011 VW Golf GTI. As someone with moderate experience working on VWs, I initially thought it might be a simple sensor issue, but it turned out to be more complex. The symptoms matched exactly what you describe, persistent ABS light and disabled traction control. A diagnostic scan revealed problems with the yaw rate sensor and electronic control unit communications. After attempting basic troubleshooting like checking connections and fuses, I took it to a specialist workshop. The root cause was a defective control unit that managed both the steering angle sensor and traction control systems. The complete repair including parts and labor came to 1000€. Since the fix, all stability systems have worked flawlessly. For a more accurate diagnosis of your Eos, could you share: Current mileage, Whether the issue appeared suddenly or gradually, If you notice any other electrical issues, Whether the problem gets worse in wet conditions, If you hear any unusual noises from the ABS unit This information would help determine if your case is similar to what I experienced with my Golf.

Last service was at 119000km, so the timing seems right to get this checked out properly. My issue appeared suddenly after hitting a deep pothole. Initially thought it might clear itself, but the safety warning lights stayed on consistently. No other electrical problems and the ABS unit is quiet. Was hoping for a simple sensor replacement, but after reading about your experience, I should probably get the control unit checked too. Appreciate the detailed breakdown of your repair, helps set expectations for potential costs.

Thanks for the additional details about the pothole incident, that actually makes the diagnosis clearer. In my Golf GTI, rough impacts never triggered these issues, which suggests your problem might be different from what I experienced. The sudden onset after physical impact points more strongly toward a damaged lateral sensor or disrupted connections rather than a failing control unit. When my electronic stability system failed, it degraded gradually over several weeks. A proper diagnostic scan should check the lateral sensor signals and wheel alignment parameters. Since hitting the pothole, the wheel alignment might be off, which can affect how the stability system interprets vehicle movement. Based on my repair experience, I would suggest: 1. Get a full diagnostic scan focusing on the ABS and stability systems 2. Have the wheel alignment checked, as misalignment can cause false sensor readings 3. Inspect the lateral sensor mounting and connections 4. Test the yaw rate sensor response The repair might be less expensive than my 1000€ case if its just sensor-related. Most workshops can perform these checks during a standard diagnostic session. Remember that driving without proper ABS and stability control greatly reduces safety, so its worth addressing promptly.

Thanks for breaking down the possible causes. The pothole impact really has me thinking it damaged something specific rather than a general system failure. Will schedule a diagnostic scan this week and have them focus on the lateral sensor and mounting hardware first. Makes sense to check the wheel alignment too, definitely felt the impact hard enough that it could have knocked things out of spec. Having an idea of the possible repair costs helps with planning, even if my fix ends up being different from your 1000€ case. Safety is the priority here, so I won't keep driving it like this for long. Really appreciate everyone sharing their experience and knowledge on these VW stability system issues.