When I park the car in low mode the rear bags will be completely deflated after ~12 hours. When I park it in the raised mode it will never air out (even after a few days of not driving). Does that mean my level sensors are bad or is there still the possibility of a leak in the bags?

 

Did you ever figure out what was going on? Same issue here … rear collapse when normal height, but can hold air / height when raised up to the off road state.