Air Suspension Failure Causes Q2 to Sag and Lean

I experienced something similar with my 2019 Audi Q3, which shares many suspension components with your Q2 model. Having some experience with air suspension issues, I can share what worked in my case. The symptoms were nearly identical, error messages, uneven ride height, and misaligned headlights. After bringing it to my workshop, they diagnosed the issue as a faulty wiring connection to one of the air struts. The cable had developed corrosion at the connector, causing intermittent signals. The fix was relatively straightforward and cost 95 Euro for cleaning the connection points and replacing the damaged plug. No need for a complete suspension system overhaul or new air struts, which would have been much more expensive. Before suggesting more specific solutions, could you provide: Current mileage on your Q2, When did the symptoms first appear, Are the suspension issues more noticeable on one side, Does the ride height vary depending on temperature or after the car sits overnight This information would help determine if your case matches what I experienced or if other suspension components might be involved.

Thanks for sharing your experience. My Q2 has 151197 KM and had its last service 3 months ago. The compressor failure started right after a particularly cold week. The suspension pump seems to struggle more on the passenger side, causing uneven ride height. The air struts make a distinct hissing sound when trying to adjust, which wasnt mentioned in your case. Since the symptoms differ somewhat from your connector issue, I might be dealing with actual component wear. I will have the shop thoroughly inspect both the electrical connections and mechanical parts of the suspension system.

Based on the additional details you provided, especially the hissing sound and high mileage, your issue seems more complex than my initial connector problem. My Q3 later developed similar symptoms at around 145000 KM, and it turned out to be a combination of issues. The hissing sound from the air struts typically indicates air leaks in the suspension system. In my case, the rubber seals had deteriorated, allowing air to escape. The suspension pump was overworking trying to maintain pressure, which eventually led to its failure. The complete repair included: Replacing worn air struts (820 Euro), New suspension pump assembly (650 Euro), Fresh seals throughout the system (150 Euro) The total repair cost around 1620 Euro but solved all issues including: Uneven ride height, System errors, Headlight alignment problems, Warning lights Given your mileage and symptoms, particularly the hissing sound and temperature sensitivity, you might need similar comprehensive suspension component replacement. The cold weather often exposes weaknesses in aging air suspension parts. Would recommend having the shop perform a complete pressure test to identify all potential air leaks before replacing parts.

Thanks for the detailed response. The comprehensive breakdown of potential issues and costs is really helpful. Given my similar mileage to your second repair experience and the matching symptoms, I suspect I am looking at a similar repair bill around 1600 Euro. The air suspension definitely seems more problematic since that cold spell, and the persistent hissing from the air struts matches your description of seal deterioration. I will have the shop run the pressure test as suggested to properly diagnose the load leveling system issues. It makes sense to identify all failing suspension components at once rather than replacing parts individually. The suspension pump is clearly struggling, so a complete overhaul of the air suspension system might be the most cost-effective long-term solution. Will update once I get the official diagnosis and repair quote from the workshop.