Audi Q4 ABS Warning + Steering Issues Need Urgent Fix

Having experienced similar symptoms with my Audi e-tron GT 2020, I can relate to this concerning situation. The combination of steering wheel vibration, increased steering effort, and ABS warning strongly points to a defective tire pressure monitoring sensor valve. When my tire sensor started malfunctioning, it caused false pressure loss readings even though the tires were properly inflated. The faulty valve was interfering with the wheel speed sensors, which directly impacts the ABS system. This explains why your ABS light is illuminated. The shaking steering wheel indicates that the system is getting incorrect readings, making the car computer think there is a serious tire pressure issue when there might not be one. In my case, replacing the defective valve assembly resolved all symptoms, the steering feel, ABS warnings, and false low tire alerts. This is a serious safety concern that requires immediate attention. While not necessarily an expensive fix, driving with malfunctioning tire sensors and ABS can be dangerous, especially in emergency braking situations. Recommend having the tire pressure monitoring system diagnosed professionally. The repair typically involves replacing the problematic valve and recalibrating the tire pressure monitoring system.

Thanks for the detailed reply about the tire sensor and ABS issues. Had the exact same symptoms on my Q4 e tron last winter. The repair shop found the faulty tire monitoring unit and replaced it along with recalibrating the system. Everything has been working perfectly since then, no more steering wheel vibrations or ABS warnings. Just curious, do you remember roughly how much you ended up paying for the fix? Also wondering if you have experienced any other tire pressure monitoring glitches since the repair?

Great to hear you got it fixed. Just like in my case, your symptoms pointed directly to the faulty tire monitoring unit. The total repair cost for my faulty valve was 280 Euro, which included the replacement and system recalibration. Since having the work done, the tire pressure monitoring system has worked flawlessly. No more false low tire warnings or ABS malfunctions. The steering feels normal again, and the car handles as it should. Its important to address these tire sensor issues quickly, as they can affect multiple safety systems. While 280 Euro might seem steep for a valve, proper tire monitoring is crucial for vehicle safety and performance.

Thanks for the input. I just got back from the repair shop and wanted to share my experience. The mechanic diagnosed a faulty tire pressure monitoring sensor that was causing all the issues. Total cost came to 320 Euro including parts and labor, which seems reasonable given the diagnostic work involved. The repair process took about 2 hours, they replaced the defective sensor and recalibrated the entire system. Had to verify all four tires were properly inflated with the tire gauge before they could complete the calibration. The difference in driving is remarkable. No more steering wheel shake, the ABS light is off, and the car handles normally again. Really glad I didnt delay getting this fixed, as driving with faulty safety systems could have been dangerous. For anyone facing similar symptoms, dont assume its just a simple air leak or flat tire issue. Getting it properly diagnosed early can prevent bigger problems down the road.