TT Air Suspension Failure: Compressor Death & Leaning Issue

Having experienced similar air suspension issues with an Audi S5 2018, I can relate to these symptoms. The leaning and inability to lift are classic signs of air suspension failure, typically stemming from either a faulty suspension pump or damaged air lines. In my case, the main culprit was a corroded electrical connector at the compressor, which prevented proper communication with the suspension control module. The warning lights and headlight misalignment match exactly what I encountered, as the system lost its ability to maintain proper ride height. Key areas to check: Air suspension compressor electrical connections, Air line integrity around all four corners, Suspension level sensors, Control module functionality This is typically a serious repair requiring specialized diagnostic equipment. The root cause needs proper identification as replacing parts blindly can be costly. The complete air suspension system is interconnected, so one failing component can trigger multiple symptoms. Most important is having a technician experienced with modern air suspension systems perform proper diagnostics. They need to check both the mechanical components and electronic systems, as the issue could be either physical air leaks or electronic control failures.

Thanks for sharing that experience. The symptoms you described with your car sound almost identical to what happened to mine, really helped having it laid out like that. The suspension pump malfunction was causing similar ride height issues and the load leveling system completely stopped working. Did you remember roughly what the final repair cost was? Also curious if youve had any other suspension compressor failure issues since getting it fixed? My local dealership quoted me 2500 Euro just for diagnostics and basic repairs which seems really steep.

Glad I could help explain those symptoms. Just had the repair done last week actually, turned out the issue was much simpler and cheaper than expected. The suspension pump was fine, but there was a damaged cable connection causing the compressor failure symptoms. The load leveling system is working perfectly now after fixing that electrical connection. Total cost was only 95 Euro for the repair, which is a massive difference from the dealership quote you received. All suspension components are functioning normally, no more warning lights or ride height issues. Having the right diagnosis made all the difference. The suspension compressor didnt actually need replacement, saving thousands in unnecessary parts and labor. Since the repair, the air suspension system has been maintaining proper ride height without any problems. The key was finding a shop that really understood these modern air suspension systems. They knew exactly where to look for common failure points rather than just throwing expensive parts at the problem.

I really appreciate all the feedback. After dealing with the malfunction for a few weeks, I finally got it sorted. Found an independent Audi specialist who actually knew what they were doing with air suspension systems. The suspension pump turned out to be fine, the issue was a damaged sensor and some corroded wiring near the rear suspension components. Total repair came to 780 Euro including diagnostics, parts and labor. Way better than that crazy 2500 Euro quote from the dealer. The ride height is perfect now, no more leaning or warning lights. The load leveling works like it should again. Such a relief to have it fixed properly without getting ripped off. The specialist even showed me exactly what was wrong and explained how the whole system works together. Definitely learned my lesson about finding the right shop that actually understands these complex air suspension setups rather than just throwing parts at the problem. The car drives like new again. Thanks everyone for helping point me in the right direction with this.