VW Eos ABS Sensor Warning, Common Fix Tips

Had similar issues with my 2010 VW Scirocco. The ABS malfunction turned out more complex than just a sensor problem. Initial diagnostic scan showed multiple input errors from the wheel speed sensors, but replacing them didnt solve it. The actual issue was a defective ABS control unit that was misinterpreting signals from otherwise functioning sensors. The odometer and speedometer worked normally because they operate on a separate circuit. This meant the car was still driveable, but the ABS and traction control systems were compromised, definitely a serious safety concern. The fix required replacing the entire ABS control module and recalibrating the system. Without proper ABS function, emergency braking stability is severely compromised, especially in wet conditions. The repair took about 4 hours at the shop, including programming and testing. Recommend getting a proper diagnostic scan first. Bad sensor readings often point to the control unit rather than the sensors themselves. This matches the symptoms described, functional speedometer but unreliable traction control. Would suggest avoiding driving in challenging conditions until fixed, as both ABS and traction control are key safety systems.

Thanks for sharing your experience with the ABS control unit replacement. My Eos actually showed similar warning lights on the dashboard a few months back. Really helpful to know about the control module being the culprit rather than just sensors. Just wondering, what did the total repair cost you in the end? Also, has everything been working properly since the fix? Asking because my transmission sometimes feels a bit rough when the ABS light comes on, and Im trying to figure out if its all connected.

I did get everything fixed and the complete repair ran about 1000€ for replacing the faulty control unit. The diagnostic scan confirmed exactly what I mentioned before, the ABS control module was misreading the speed signals, but the sensors themselves were fine. Since the ECM replacement, all systems have been working flawlessly. The ABS warning light on the dashboard hasnt come back, and the traction control is functioning as it should. The rough transmission feeling you mentioned completely disappeared after the repair in my case, turns out the control unit issues were affecting multiple vehicle systems. The fix was definitely worth the investment considering the safety implications. The repair shop needed to program and calibrate the new unit, but once that was done, all the speed signal faults cleared up immediately. If your symptoms match what I experienced, you might be looking at a similar solution. Make sure to get a proper diagnostic scan, it will save time pinpointing whether its truly the control module causing your issues.

Thanks for all the responses. After consulting with a certified mechanic, they ran a complete diagnostic scan which confirmed the faulty ABS control module. The repair cost came to 950€ including parts and labor. The transmission roughness was indeed connected to the ABS issue. The mechanic explained that modern vehicle systems are highly integrated, so problems with one component can affect others. The speedometer stayed accurate throughout, but the ABS and traction control warnings were constant concerns. The repair process took about 5 hours, longer than expected because they had to calibrate the new control unit and run multiple tests to ensure all systems were communicating properly. Worth noting the shop found some corrosion on the wiring harness connection which they cleaned up during the repair. Since the fix, everything has been working perfectly. No more warning lights, traction control is responsive, and the transmission shifts smoothly again. Actually drove through some rain yesterday and could feel the ABS working normally when I had to brake suddenly. Really glad I got this sorted rather than just living with the warning lights. The safety benefits alone made it worth the investment.