man, I guess the 04 4.8is had a lot of air ride issues. Not uncommon as that was the first year for the new suspension on the 4.8is. Seems like this is normal for all BMWs in the first year or two of production. Everything seems to get sorted out by the 3rd or 4th year.

Good luck with your repairs. The air ride can be very expensive to fix once it goes haywire. I was lucky most of my issues were replaced before I took ownership but when I viewed the service history, it could have been a nightmare to pay out of pocket.

Just a few months ago I replaced the front drivers strut and that ran about $750 (parts discount from friend at the dealer). Thankfully that is just a plug and play fix. The module will take time to code as others have pointed out.

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2004 X5 4.8is - X-pipe! V1 hardwired, Invision DVD headrests, N62 Intermediate Levers Fixed! FOR SALE!!! Contact me if interested!

1999 LSB M Coupe - Heavily modified
2008 M5 Sepang/Portland - Bone stock
2010 Mini Cooper S Laurel Sport Edition #1/100
2002 525iTouring - Alpine/Beige