Good day!!

First, I would suggest you include the vehicles you have in the signature area so we all know what you are working with, and you never have to worry about including that in the posting again..

Oddly, I don't think the year or motor size makes much difference here... If you have an alarm, the controller won't do anything until that alarm is deactivated... You may need to toggle between the different modes, then into normal again... This should clear the alarm... If you have a message of inop, the air suspension won't do anything...

I have 2-axle air in my 2004 and it had an issue... I went to coils until I figured things out... Since you only have rear air, you could just get a pair of rear 3.0L coils and never need to deal with the air ride again... Only recommended if you will never tow anything heavy...

Cheers!!!

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2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny)
2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red)
2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II)
2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless)
BMWCCA member (#4745)