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What happened to the Ionizer?


Active Member
Supporting Member
Aug 1, 2015
Before version 9, there was a setting to turn the Ionizer on or off. the text in the user manual said, "Ionizer: If on, the air ionizer freshens the air in the cabin."

I cannot find such a control in the settings screen under version 9. I did a search through the latest manual and found no entry for the word "Ionizer."

So, what do you think? Was the setting preserved? is the ionizer now on or off according to how it was set before? or is it perhaps disabled?

Not a big thing, but curious. And not altogether surprising, given the mess that version 9 seems to be in other areas.

(PS: I would have posted this in a version 9 thread, but i did not find a sticky thread for it on the Tesla page. Sorry if I missed it.)
I swear I’d about memorized the old manual when I first dived into things Tesla and I’ve never heard of any ‘ionizer’. I had to look at what country you were from in case this was a foreign thing :D and I’ve got nothing. I can’t even think what this could be except BWD mode...

In Aug 2017, I asked Service via email: "Some time ago, the ionizer setting was removed from the UI. Can you tell me if the setting is on or off in my Model S? If it is on, could you turn it off, where it will stay?"

They replied: "Hi, you are correct. The setting toggle was taken out and whatever setting that was selected would remain active. I confirmed remotely that your ionizer is set to off. Please let us know if you would ever want the functionality restored, we can do so remotely. Thanks!"
..that's a very expensive way to switch something on/off! If you get somebody very competent on the first call, maybe costs Tesla, what $25 - $50 (?) for the expense of a human doing this for you. Multiply this for every telephone tag on Tesla side until finding a competent person.

I wonder if the firmware just switched them all off fleet-wide at time of disappearing the button? Hoping nobody would remember or care about the feature. Put me in that camp.

If it used electricity to run, then off means better range and I'm all for that.