Well this is a bummer.. After installing brand new OEM upper ball joints two weeks ago, the drivers side ball joint is leaking a bit. Is it possible it's just a little extra grease that's leaking out? Noticed it today. Not sure if I should be worried or just leave it alone. Spent a good chunk of money to keep everything stock, now sort of regretting that.
I got the control arms off of ebay, from a legit seller (appears to be at least) about a $100 cheaper than what sewell charges for them (with the CL discount). I guess my concern is while they do say the parts come with a 1 year manufacturers warranty, would it be an issue since I installed them myself?
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The only way to find out is to wipe the excess grease off the rubber boots on the one in question, and observe after you drive around some. If it's a torn boot, then as long as you can approach someone at Lexus or the parts supplier, you should be able to exchange it under warranty, at least that's what logic tells me. I don't think you installing it should void that (unless they can prove that you damaged it and tore something during the install, I imagine).
Wonder if it could be Lexus arms with crappy chinese knock off balljoints? You can find balljoint replacements for most Lexus control arms but, they're not Lexus balljoints. Did you compare the old with the new balljoints? Particularly the quality of the rubber boots.