VW T-Roc ABS Warning With Heavy Steering Issues

Having some experience working on VWs, I faced a similar issue with my 2020 T-Cross. The symptoms you describe match exactly what happened to me, especially the tire pressure warning and steering wheel vibration. My tire sensor detected an air leak caused by a faulty valve, which was gradually letting air escape. When checking with a tire gauge, the pressure was significantly lower than recommended, causing the ABS and steering issues. The workshop diagnosed it as a defective tire valve that needed replacement. The total repair cost was 280€, which included: New valve assembly, Tire sensor recalibration, Fresh tire inflation, System diagnostic check Before jumping to conclusions, could you share: Which tire is showing low pressure? Are all tires visibly inflated? How long has the warning light been on? Did you notice any flat tire symptoms before the ABS warning? A proper tire pressure check with a reliable tire gauge would be the first step. This could save you time and money if its just a simple inflation issue. However, if you hear any hissing or notice continuous pressure loss, best head to a workshop as it might be a valve issue like mine.

Thanks for the input. Following my last service at 15314km, I checked all tires with a pressure gauge. The front right tire showed significantly low pressure at 1.8 bar despite being inflated just last week. No visible punctures, but I noticed a slow air leak around the valve stem. The tire sensor warning started about 2 days before the ABS issue. All tires look properly inflated except the front right, which seems slightly lower. No hissing sound, but the pressure keeps dropping even after reinflating. Given the symptoms match your experience, I will get the valve checked at the workshop. Hope its just a faulty valve and not a more serious issue with the tire sensor system or ABS module.

Thanks for the additional details. From what you describe, it definitely sounds like the same valve stem issue I encountered. That 1.8 bar reading along with the continuous pressure loss around the valve matches exactly what my car was showing before the repair. Let me share what the mechanics found in my case after a deeper inspection: the valve stem seal had deteriorated, causing a slow leak that the tire sensor picked up. The inconsistent tire pressure then triggered the ABS system, explaining the warning light and steering issues. When they fixed my valve, they also found some corrosion around the tire sensor mounting area. Worth asking them to check this while they are working on it. The tire sensor needs good contact to function properly. Just a heads up, make sure they use the correct valve stem assembly compatible with the tire sensor system. The standard rubber valves wont work properly with the pressure monitoring system. Also request they recalibrate the tire sensors after the repair to ensure accurate pressure readings. The quoted repair cost might vary, but considering the similarities in our issues, you should expect the repair to resolve all three problems: the pressure loss, ABS warning, and steering vibration. Keep monitoring your tire pressure with a reliable tire gauge after the fix to ensure everything stays properly sealed.

Let me share an update on my car situation. I took it to the workshop yesterday based on the advice here. They confirmed it was indeed a faulty valve stem causing the pressure loss, just as suspected. The repair bill came to 245€ which covered a new valve assembly, sensor recalibration, and a full system check. The mechanic showed me the old valve stem, the seal was completely worn out, explaining the continuous tire pressure drop I was experiencing. After the repair, all warning lights cleared up. The ABS warning is gone, no more steering wheel vibration, and the tire sensor is showing normal readings. Power steering is back to normal too. They recommended checking the tire pressure monthly to catch any similar issues early. Really glad it wasnt a more serious problem with the ABS module. The punctured tire and failing valve stem could have led to bigger issues if left unaddressed. Thanks for helping me diagnose this, saved me from unnecessarily worrying about more expensive repairs.