RS7 Air Suspension Failure: Height Sensor Warning Signs

Had almost exactly the same symptoms on my 2017 RS6. The air suspension was acting up, causing uneven ride height and throwing height control warnings. The leveling sensor was giving incorrect readings, which explained both the suspension and headlight alignment issues. After some diagnostic work, the workshop found a defective control rod on one of the height sensors. The connection between the control rod and the leveling sensor was worn out, causing inaccurate readings and making the air suspension system compensate incorrectly. The repair was straightforward, replacing the control rod and recalibrating the air suspension system fixed everything. Total cost was 110 Euro including labor. Since then, the suspension has been working perfectly with proper height adjustment and no more warning lights. To help diagnose your specific case, could you share: Which corner of the car sits lower? Does the height variation change after the car has been parked for a while? Are you hearing any unusual noises from the suspension? Have you noticed any air leaks or hissing sounds? The load sensor system on these cars is pretty robust, but the connecting components can wear out over time. Worth getting it checked before it causes more extensive suspension issues.

I just had my 63753 KM service done last month, and the automotive suspension started showing these exact symptoms shortly after. The front passenger side sits about 2 inches lower, and the height sensor readings are inconsistent according to my scan tool. The ride height gets worse after the car sits overnight. The control module is showing multiple fault codes related to the height adjustment system. My mechanic suspects a faulty height sensor or wiring issue, but wants to do more testing before replacing parts. The air springs themselves look intact with no visible leaks. No unusual noises from the suspension components so far, but the uneven stance is quite noticeable, especially when looking at the car from the front. Has anyone had success fixing this by just replacing the sensors, or should I be prepared for a more extensive repair?

Thanks for the additional details. After fixing the control rod on my RS6, I actually ran into a similar issue again about 6 months later with the front passenger side sitting low. The control module was showing height sensor faults, but this time the problem was more complex. In my case, the wiring harness connecting to the front height sensor had become damaged, causing intermittent signal issues. The connection would work fine when warm but fail when cold, explaining why the problem was worse after sitting overnight. The repair involved replacing both the height sensor and the wiring harness on that corner. The ride height leveling system needed recalibration afterward. Total repair cost was around 450 Euro for parts and labor. A few tips from my experience: Have them check the wiring connections while the system is both cold and warm, Make sure the leveling sensor arm moves freely through its full range, The load sensor readings should be verified at different heights, Consider replacing the sensor and wiring together if one is faulty Since your symptoms started after service, they should also verify nothing was damaged or incorrectly connected during routine maintenance. A thorough inspection of the suspension components while diagnosing the height control system is essential.

Based on the conversation, here's how I would reply as: Thanks for sharing your experiences with your height control issues. My symptoms match yours almost exactly, particularly with the cold-start height inconsistency. The timing of my leveling system problems right after service does make me suspect potential wiring damage. I checked the front passenger leveling sensor this morning, and there is some resistance when moving the sensor arm manually. The automotive suspension behavior matches what you described, working somewhat normally when warm but failing after sitting cold. The shop is coming back with a full diagnostic report tomorrow. Given your experience, I will have them specifically check the wiring harness and sensor arm movement before just replacing the height sensor. Makes sense to address both components if the wiring is compromised. Will post an update once they complete the inspection and sort out the suspension issue. The uneven stance and erratic height adjustment are definitely concerning, so hoping for a straightforward fix like yours rather than major suspension component replacement.