It hasn't been done even once in 200k+ miles. I want to see what shape it is in and if it needs replacement. Thanks.
Rideshare Sienna
You'd have to remove the intake to even see it. Would not recommend for DIY unless you are a decent mechanic already.
I'm not familiar with the 2021, but before you bother cleaning it you might want to price out a new one. On the 1st-gen a new PCV valve is less than ten bucks. (I still clean mine since I'm a miser, just blast it out with Brakleen followed by compressed air.)
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