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X5 E53 (1999 - 2006)
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  #1  
Old 05-04-2013, 09:30 PM
E46landshark's Avatar
E46landshark E46landshark is offline
Prowlin
Location: Oklahoma
 
Join Date: Jan 2013
Posts: 197
Mein Auto: 2004 325ci
Auto suspension inactive

My wife's boss' x5 reads 'auto suspension inactive', and he's wondering how to reactivate or cure this illness. I'm sure it's a simple process but I'm an e46 owner and he's not inept with bimmers. Help is much appreciated!
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Old 05-04-2013, 11:02 PM
marlin758 marlin758 is offline
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Location: Lancaster UK
 
Join Date: Jul 2010
Posts: 12
Mein Auto: BMW X5 3.0 D BMW 318tds
If the car is sitting straight and level then the first thing to check is the battery voltage .

Whenever the battery gets low then the first code they seem to throw is ' self levelling suspension inactive'

I have had it happen more than once when using BMWScan1.4 and had the ignition on for a long period..
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Old 05-05-2013, 05:38 PM
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E46landshark E46landshark is offline
Prowlin
Location: Oklahoma
 
Join Date: Jan 2013
Posts: 197
Mein Auto: 2004 325ci
OK, so assuming it IS unleveled, would he have to take it to the dealer? Is there a way to clear the code without recharging the battery if the voltage is low?

I'm not sure if it makes a difference but he has the 4.8iS
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Old 05-05-2013, 11:09 PM
marlin758 marlin758 is offline
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Location: Lancaster UK
 
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Mein Auto: BMW X5 3.0 D BMW 318tds
If it is just the battery and the car is level then charging or replacing it will clear the error display on the dash.

How old is the battery ? Most local garages or Battery stockists can test the battery on load ( usually for free )
as they hope to sell you a new one .

I am not sure about the 4.8 is but the battery on mine is in the trunk under the spare wheel and the self levelling suspension unit - need a 13mm spanner to remove the 2 bolts and 2 nuts holding this in place .

The code will still be stored as a fault code but the car usually logs all sorts of errors during it's life but it would be stored as ' fault not present '. These can be read / cleared by a dealer or you can purchase BMWScan 1.4 (eBay ) and use a laptop to read / clear error codes.

If the car is low at one corner then the air pump ( in the trunk ) should be running . Then you are looking for an air leak, most likely the air bag on that corner.

If the car has settled on all corners then you are probably looking at pump or control module failure.

This is then probably a dealer / indie job depending on his expertise . There are a lot of posts on various BMW forums re air suspension faults even down to stripping and rebuilding the air pump

Last edited by marlin758; 05-05-2013 at 11:33 PM.
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