GXCajun Posted September 11, 2017 Share Posted September 11, 2017 When I start out from parking in the morning, my GX ride is really rough in the back, but after a short while it smooths out? Is this a pneumatic cushion issue? Is it normal? Quote Link to comment Share on other sites More sharing options...
momo2000 Posted September 11, 2017 Share Posted September 11, 2017 Just went through this with my 2003 GX470. Yes it is very BOUNCY/ROUGH for a few mins. I'd say you have a leak in one of the pneumatic cushion/air bags, whatever you want to call them. Mine I could typically hear the Right Rear one leaking when I parked it. You need to get this taken care of, because the air pump is very expensive, so you don't want to burn it out . . . if your leak is really bad, and it is working a lot when you are driving . . . then you'll have one more thing to replace. The bags from Lexus seem to be about $300 each, and then labor to install, so seems to be $800-$1,000 to get done at Lexus. There are lots of folks on the forums that DIY the project. You can find plenty of instructions. I was interested in doing it myself, so I ordered the parts suggested from eBay for $158 for the pair www.ebay.com/itm/Rear-Air-Spring-Bag-PAIR-for-2003-2009-LEXUS-GX470-TOYOTA-4RUNNER/231771928392 but jacked up one side to do a “preliminary check” and the tops of the bags are “way up there”, and I just didn’t see any way I was going to get to the “clip” to release them. So, I opted to have my non-dealer Lexus mechanic do it. He charged me $181 (plus tax). So, for about $350 I am back in business. Good luck, and let us know what happens. Quote Link to comment Share on other sites More sharing options...
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