What does this do?

[TOXIC]

As per title.

Please see attached pic.

[NemesisUK]

Windscreen wiper defrost. It heats the screen where the wipers park.

[Normski]

Turns on the heater elements where the wipers come to a rest. Idea is that you turn it on and it defrosts the wipers (a little) to avoid you ripping your wipers when they're frozen solid...

[dublet]

Activates self destruct.

[NemesisUK]

7 minutes ago, dublet said:

Activates self destruct.

[TOXIC]

15 minutes ago, dublet said:

Activates self destruct.

I initially thought that’s what it was for, I was too scared to touch it until I’d posted on here.

[rich1068]

14 hours ago, NemesisUK said:

Windscreen wiper defrost. It heats the screen where the wipers park.

Ooo, nice touch.

@TOXIC if you're missing an owners manual I think you can download them from Lexus UK. If they don't have the 250 then I'm certain Lexus US will. They seem to go back further.

[Texas]

Funny enough the US spec car does not have this feature! It has a blank plate or a coin holder in place of the switch!

( note pics are from LHD )