2015 LTD XREAS farts!

My 2015 4Runner LTD’s XREAS failed with 42,000. Toyota was kind enough to “goodwill” half of the $3200 replacement cost. That’s the good news.
Now the bad. As I was pulling the 4Runner out of the shop, and went over a small bump, I heard a creaking noise which sounded similar to a stress fart! I took it back, we were able to replicate the sound, and they kept it for 2 days. When I got it back, it was making the same noise.
The service manager and shop foreman cannot figure it out, and it continues to “creak-fart” over anything more than a small bump or dip in the road.
I’m open for suggestions from all you geniuses!

Thanks much,

Brett


Sent from my iPhone using Tapatalk

I feel fortunate that my Limited X-Reas started 'seeping' at 95k miles while the extended warranty was still valid, and they replaced the whole system. For those of you considering replacing the Xreas system, it would have cost just shy of $3200 if I would have had to pay for it. I've put about 25k miles on the new suspension so far (installed Oct. 2018) , but now I'm looking at lifting my 4runner.
I would gladly give the whole Xreas system to someone if they wanted to replace theirs, but I'm not sure how to uninstall it without damaging it for reinstallation.