I have my front right deflating overnight, and my rear right is also a bit lower, but not as much as the front. They inflate on door opening and I don't see any error message on the display.

I don't think that both air bags went bad on the same day, so, are the front and rear linked in anyways together in the air circuit.?
If the front leaks air, is it going to affect the height of the rear one, even if it is good?

I didn't have time to check with soapy water yet since it happened for the first time on Monday. I will check this weekend the 4 airbags.

In the meantime, I have downloaded the BMW training pdf on the air system, but it is only general information, no pneumatic drawings.

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