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      03-17-2024, 10:30 AM   #1
LSD4me
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Drives: 2016 X6M
Join Date: Apr 2019
Location: Earth

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F86 Air Suspension - Bags Not Deflating

Hey everyone,

I have an issue that is somewhat opposite to what most people have with their F86 Air Suspension.

The initial problem was exactly like everyone usually has...The rear sags and drops all the way down overnight.

I sourced 2 OEM Rear Suspension Bellows and replaced them.

The procedure i followed is common, and both rear wheels were lifted off the ground.

When I finished replacing the 2 bellows, I opened up ISTA and performed the procedure to Inflate the bellows. This kicked off the compressor for about 40 seconds, and the bellows inflated.

When i lowered the car, it was painfully obvious the ride height was WAY TOO HIGH. The EHC sensors show 95mm left, and 91mm right. (See attached irl picture)

When i go into ISTA to perform a DEFLATE procedure, nothing happens. I hear a faint noise (relay / regulator open), but the bellows DO NOT DEFLATE.

I tried removing the fuse for the compressor and driving it around for a bit thinking it would deflate on its own but no go. Even letting it sit overnight didnt work. Its still at that 95mm mark.

Im not sure what to do at this point. My next steps would be to start taking the skirt of the bottom and looking at the compressor side aof things as that is where the regulator is.

But before i do that, anyone see this before?

I attached a bunch of screen shots from ISTA and such.

TIA!
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