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  #1  
Old 04-16-2012, 06:32 AM
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Air suspension sometimes deflates

I have tried searching the forums for this, but no luck so far.

I have been having intermittent problems with my air suspension (I only have rear air suspension), sometimes when I come back to the car I find the rear suspension is almost entirely flat, especially on the right rear.

Sometimes it is flat less than an hour after driving it, yet other times I can leave it sitting in the garage for a whole weekend and it stays pumped up perfectly.

If it was a leak, surely it would always leak? Perhaps there is some control valve that might not be closing correctly when I turn the car off?

I have not had any warnings on the dash regarding the air suspension being inactive. As soon as I unlock the car, it pumps back up to normal height with 30 seconds or so.
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  #2  
Old 04-16-2012, 11:29 PM
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My X5 had the same problem in front right recently. Changed airbag under warranty and fixed it 100%

Quote:
Originally Posted by X5Kiwi View Post
I have tried searching the forums for this, but no luck so far.

I have been having intermittent problems with my air suspension (I only have rear air suspension), sometimes when I come back to the car I find the rear suspension is almost entirely flat, especially on the right rear.

Sometimes it is flat less than an hour after driving it, yet other times I can leave it sitting in the garage for a whole weekend and it stays pumped up perfectly.

If it was a leak, surely it would always leak? Perhaps there is some control valve that might not be closing correctly when I turn the car off?

I have not had any warnings on the dash regarding the air suspension being inactive. As soon as I unlock the car, it pumps back up to normal height with 30 seconds or so.
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Old 04-18-2012, 09:02 AM
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You have a leak in that airbag. It will not always leak like you are saying. Sometimes the hole may be covered up and hold air. If you do not replace the air bag soon you will also have to replace the air compressor because it will burn out continually airing up that bag. If the compressor stops airing it up, check the 30 A fuse first to get the compressor going again.

Talking from experience.
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Old 05-22-2012, 03:02 AM
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Is there anything I can do to check that it is the airbag, and not a connection or something else? I don't want to spend all the money buying and installing a new airbag, just to find it is still leaking.
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Old 05-22-2012, 07:46 AM
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You can make a solution of soapy water and put it in a spray bottle. Spray all around and soak the area very very well. Watch for air bubbles and then you have found your leak.
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Old 05-22-2012, 04:02 PM
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Quote:
Originally Posted by TwinTurboGTR View Post
You can make a solution of soapy water and put it in a spray bottle. Spray all around and soak the area very very well. Watch for air bubbles and then you have found your leak.
This is what you need to do.

You can also use household window cleaner in a spray bottle. If you follow the above procedure you will most likely immediately see air bubbles and then you are sure of the leak.

From there go to Arnott Industries and buy a refurbished replacement unit. Search this board and you will find posts on Arnott. Air Suspension Kits, Air Shocks, Suspension Parts, Struts - Arnott Industries I was advised to replace both sides at the same time so the suspension would be even. IMO you will be super happy with Arnott and not have to worry any more about coming out in the morning to find a lopsided X5. Yes this will cost some $ but it is so worth it IMO. Good Luck.
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Old 05-25-2012, 05:08 PM
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How can I identify whether I need the comfort or sports suspension? My car seems to have some sportpac items, but also some non sportpac options.

Or, if I replace both airbags, does it not matter whether I use the sports or comfort ones?
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