Cleaned up the fuel system (injectors?) on my (2012) RX450h with 8oz of "StarBright" fuel stabilizer in full tank of gas.
My suburban stop-n-go MPG for this Hybrid went from 20-22 to 27.5, and acceleration has increased.
Now I want to clean the MAF, but where *is* it ?? Guessing it must be buried back by the firewall
- somewhere near air filter? Anyone with a photo? TIA.

 

Do you still need help?

 

Long time since I posted this, but 3 days ago, on start-up got a check engine light. Also, gas mileage has dropped into the 23-25 mpg range.
TechStream identified the problem as a bad or dirty MAF, so, time to clean the MAF, and, then wait to see if it needs replacement.
Again, need to learn where they've hidden the MAF. Is there a YouTube on getting to the MAF on the (2012) 450h?
OR... a write up (with photos!) on getting there. TIA

 

This link explains where it is buried https://www.clublexus.com/forums/rx-...10-rx450h.html

Your RX should be similar to the Highlander that has the same V6 although not a hybrid.
​​​​​​

 

If only it were exposed like the 350, it would already be cleaned or changed.
The engine bay on the RX450h is MUCH more crowded, unable to see the Throttle Body, MAF, Master Cylinder, etc.

 

See this thread on the Toyota Nation forum. https://www.toyotanation.com/threads...e-3-5.1799328/

 

THANKS !! ... Saved me looking all over YouTube.
Ordered a new MAF, and once it's here will be removing whatever I need to to get at the MAF.
I won't change the plugs or coils back by the firewall at this point, I expect them to still hold up to 100-110k,
I'm at about 82k right now.