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Lexus LS430 Rain Sensor Wipers


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The rain sensor function on my newly acquired LS430 in not working as it should - when auto wipers is selected the wipers start wiping intermittantly.

I have removed the sensor and cleaned the gel, sensor and windscreen. This has not cured the problem

Any ideas what could be the issue? Do the actual sensors develop issues and stop working?

Next step would be to buy another sensor and gel pad and see if that cures the problem.

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If the windscreen has been replaced with a non-OEM screen then the rain sensor often does not work, so the system defaults to being an intermittent wipe with adjustable speed via the twist knob on the stalk.
What there is in the OEM screen to make it work I have no idea, but lots of comments on the US forums about this problem.

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18 minutes ago, BigBoomer said:

If the windscreen has been replaced with a non-OEM screen then the rain sensor often does not work, so the system defaults to being an intermittent wipe with adjustable speed via the twist knob on the stalk.
What there is in the OEM screen to make it work I have no idea, but lots of comments on the US forums about this problem.

Yes - I have read about aftermarket screens aswell however, the screen in my previous 430 was also replaced and the auto wipers worked fine. 

Still searching for an answer . . . . . . 

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