X5MonsterBMW: I feel your pain, I believe I documented my issues earlier in this thread and never posted the final answer. Exact same issues you list, final answer was the EHC-II module. When it fails it will report the ride height deviation and also trigger the FTM. I had replaced the bags (damaged while doing other work), and replaced the height sensor on the corner that reported off. Funny enough it was the front left on mine with almost the same readings as yours.

New module from ECS and a program update fixed the problem:-(


Brent

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06 E53 4.8iS, born 8/2006 (wife's)
06 E60 M5 (mine)
01 330Ci Convertible (daughter's)