Soft Brake Pedal & Warning Lights Plague Audi SQ7

I faced similar issues with my 2020 Audi RS6 Avant. The symptoms align perfectly, soft brake pedal and reduced brake performance are classic signs of air in the hydraulic brakes system, often resulting from incorrect bleeding procedures. The brake booster and ABS system are interconnected. When my car showed these symptoms, the root cause was improperly bled brake lines after routine maintenance. The mechanic had to perform a complete system bleed using specialized diagnostic equipment to properly cycle the ABS pump during the bleeding process. This is a serious safety concern that requires immediate attention. The stored error codes likely indicate the ABS system detected irregular pressure readings, which happens when air is trapped in the system. While a faulty brake booster pressure sensor can show similar symptoms, its usually the improper bleeding that causes these issues. The repair involved: Complete diagnostic scan, Professional brake system bleeding with specialized equipment, Testing all brake booster components, Verifying proper ABS system operation, Road testing to confirm proper brake performance While replacement parts werent needed in my case, ignoring these symptoms could lead to brake system failure. The repair process requires specific diagnostic tools and expertise with modern Audi brake systems.

Thanks for the detailed response regarding the brake system issues. My situation got resolved, and the cause was indeed similar to what you described, air in the brake lines that required proper bleeding. The ABS system is working perfectly now, and brake performance has returned to normal. Did you remember what the total repair cost was in your case? Also, has everything been working fine since the repair, or have you noticed any other brake-related issues?

After my initial brake system service, I paid 90 Euro for the complete bleeding procedure. The mechanic confirmed the brake booster pressure sensor was functioning correctly once the air was properly purged from the lines. The diagnostic tools showed all systems working as intended after the repair. Since having the brake system properly bled, everything has worked flawlessly for over 15000km. No warning lights, perfect pedal feel, and the brakes perform exactly as they should. The key was using the right diagnostic tools to ensure the ABS pump cycled correctly during the bleeding process. Its reassuring to hear your issue was resolved similarly. These modern brake systems are sophisticated but very reliable when serviced correctly. The most important thing is having a technician who understands the proper bleeding procedure for these advanced brake systems.

After dealing with this brake pedal issue, I finally got it fixed properly. Found a certified Audi specialist who really knew their stuff about hydraulic brakes and ABS systems. The repair cost came to 120 Euro, which included a full system diagnostic and proper bleeding procedure. The mechanic showed me the pressure sensor readings before and after the fix, what a difference. The vehicle safety system is now working perfectly, and the brake pedal feels firm again. Such a relief to have this sorted by someone who actually knew what they were doing, unlike my previous experience. Been driving for about a month now with zero issues. The brakes respond exactly like they should, and no more warning lights on the dash. Worth every cent to have it done right by a proper specialist who understood these complex brake systems. Thanks again for sharing your experience, really helped me understand what I was dealing with and gave me confidence to get it properly fixed.