What is the function of this button?

17025 Views 9 Replies 8 Participants Last post by Matt_RN, Jun 27, 2011

jeffp

Discussion Starter · Jun 27, 2011

Filtered air? If so, is the air not always filtered?

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The manual from the online Lexus service says:

"Micro dust and pollen filter button.
Operates micro dust and pollen filter on/off. Outside air mode switches to (recirculated air) mode. Pollen is removed from the air and the air flows to the upper part of the body. Usually the system will turn off automatically after approximately 3 minutes."

But I'm not sure why you would want to bypass it. I know our Prius always filters the air.

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CT200Kev

· #3 · Jun 27, 2011

jeffp said:
Filtered air? If so, is the air not always filtered?

I call it the hay-fever button - as dont suffer from this never used it.

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jimmyc13

· #4 · Jun 27, 2011

jjay said:
The manual from the online Lexus service says:

"Micro dust and pollen filter button.
Operates micro dust and pollen filter on/off. Outside air mode switches to (recirculated air) mode. Pollen is removed from the air and the air flows to the upper part of the body. Usually the system will turn off automatically after approximately 3 minutes."

But I'm not sure why you would want to bypass it. I know our Prius always filters the air.

According to my dealer, the pollen filter feature filters the air that is already inside the cabin. Don't the other cabin filters in other cars only filter the air that is entering the cabin from the outside? Pretty sure that's the case, as when replacing these in my other cars, they have contained pollen, pine needles, etc....pretty sure that what's different about this and might not be in your Prius.

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jjay

· #5 · Jun 27, 2011

Thanks! Yes, the Prius filter catches a lot of coarse debris that makes it through the metal screen on the outside.
The pollen filter makes more sense now.

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maxa

· #6 · Jun 27, 2011

yepp, so if you have a pollen allergic person in the car during pollen intense period you simply push that button and it will go over to internal air that is separately "cleaned" from pollen by this mode.
I notice a big difference for my son thats allergic, when you use a filter for this solo purpose it seems much more efficient than using it always for everything like the normal filter.

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dkid

· #7 · Jun 27, 2011

It also helps if you go through an area with a bad odor. Hit the button and the odor goes away.

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SteveRD66

· #8 · Jun 27, 2011

dkid said:
It also helps if you go through an area with a bad odor. Hit the button and the odor goes away.

Hmmm could be useful after the next curry night !

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Matt_RN

· #9 · Jun 27, 2011

Yeah. The purpose of it is to blast the pollen that has settled on your clothes in the car cabin, then it filters it intensively so you're, theoretically, no longer exposed to the pollen on your clothes. It's like the air shower Lexus employees must go through when entering the car factory in Japan.

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Matt_RN

· #10 · Jun 27, 2011

Good for wiping out outside odors too, I suppose, since it does kick the filter into high gear. I'm not sure if there is a separate pollen filter or if it uses the same cabin air filter.

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