Q: where is the MAF located? what does it look like? on 1999 Lexus RX300

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I just changed my thermostat, and after that code cleared, 3 more popped on!! 0125 P1153 and1155. was told if i just cleaned out the MAF codes would clear. I changed the air filter when i did the thermostat.. and then was told if i just change the AF bank 2 sensor 1 all other codes would also clear.. now i'm just confused.
(1) Answer
It retained 2 screws and very easily access with a phillips. It's along the nozzle of the intake air by the air filter but on a separate chamber. Don't go to dealer or service station, get it at Advance Auto and do it yourself you will save quite a bit.