4x4 abs Brake Dsc suspension in acitve? Help

[nas517]

Can anyone tell me if they have ever cam across this issue.... My air suspenson is in active and my 4.8is is low all the way around. took it to the dealer and they said I have a fault in the ride height control module. Will this cause the abs brake dsc and 4x4 lght to stay on? Has anyone ever had this problem or am i lookng at big bucks to fx. The module is 650 for the Wabco ride height module located behind the glove box. Can this cause the other lghts to come one? Some please shed some light on ths situaton... i am losing my mind with this car and Im ready to lose it.!