The brief
A BMW 7 Series came in sitting lopsided and distorted, the sign of its airmatic absorbers giving out, which on these tends to happen before the ten-year mark. The airmatic suspension is what gives the 7 Series its consistent ride height and its smooth ride, and the absorbers in it are wear items. When one airmatic absorber perishes and leaks, that corner sags and the car sits uneven, looking lopsided. Replacing it isn't just a swap, though, fitting one new absorber against an older one on the parallel side needs skill and micro-precision to get a perfect balance, or the car still won't sit and ride right. A worn airmatic absorber doesn't reseal, so it gets replaced, balanced against its partner, and the ride height recalibrated.
The diagnosis
The check found the airmatic absorber worn, leaking so that corner had sagged, which is why the 7 Series sat lopsided. The job needed careful balancing with the absorber on the parallel side, since fitting a fresh one against an old one without balancing leaves the car distorted. That's an airmatic absorber replacement with precise balancing against its partner and the ride height calibrated, rather than a straight swap that leaves the car sitting wrong.
The work
The worn airmatic absorber was removed and a new genuine BMW-spec absorber fitted, then carefully balanced against the parallel absorber so the car sits and rides level, every fastener torqued to the manual figures. The air system was bled, the new absorber inflated, the ride height calibrated with the diagnostic system, and any suspension faults cleared. A road test confirmed the car sitting level, the compressor cycling normally, no warning light, and a composed, balanced ride.
The outcome
The car sitting level at the right height, no lean or distortion, the compressor cycling normally, no air suspension warning, and a smooth, balanced ride. The 7 Series went home with its comfort and its stance restored. The trick with airmatic absorbers is the balancing, not just the swap, so doing it with the micro-precision the parallel pair needs is what gets the car sitting and riding right again.