So, I seem to be in the very small minority in having this issue, but both of my rear shocks are blown on my 2019 IS350 F sport. Discovered it today while throwing on some extended studs for spacers. 27k miles on the car, 4k of which are on RSR downs. Somehow, the emergency brake pads on the interior of the rear rotors are also completely worn down, which is extremely confusing to me, as I think I've used the E-Brake exactly one, while hill parking. I don't drive the car unnaturally hard, don't have hilarious fitment, and unfortunately, it just seems like I got unlucky, and the previous owner was a gremlin (this is the latest in a long string of issues, with a CPO car, no less).

The singular worst part is that upon looking back through the photos I have of the spring install (1 week after purchase) the shocks were already showing signs of leaking, and I just hadn't clocked it (at 23k). I am still within warranty, but because I have the RSR downs installed, I think Lexus would laugh if I even attempted to ask about it.

I'm more than comfortable with replacing the shock itself, but I've seen some horror stories about AVS recalibration being an issue. Anyone know if you can DIY the shocks with OEM replacements, and then take it to the dealer for a recalibration, or do they tend to want to do the entire procedure in-house?

 

There shouldn’t be any need to recalibrate AVS. I replaced all four shocks with OEM shocks in my 2015 IS350 F-Sport and there was no issue other than needing an alignment.

 

What's the mileage on your is350? Mind telling me what was the reason for replacement? I am wondering if I should do mine on my 71k mile is350.

 

Yeah for sure. I replaced them at around 75K. All four shocks were leaking and I was getting some clunking / banging noises over bumps.

I’d check and see if the shocks are leaking oil down the sides, that’s usually the first sign they are going out.

If you notice the car rising a lot more during hard acceleration or diving during hard braking that’s also a sign. Another thing to look for is if the car seems to keep bouncing after a dip or bump or if you hear a tire bouncing up and down rapidly when going highway speeds.

I also replaced the springs at this time, it’s a heavy car and replacing the springs made a pretty noticeable difference in ride comfort.