Rain-Sensing Wiper Operation
Rain-sensing wiper operation (when you move the knob one step down from the normal position) gets me crazy. My GX470 was absolutely sensitive to my regulating the sensor sensitivity (via the ring on the knob).
On LX570, adjusting the sensitivity ring seems to result in nothing. The sensor doesn't seems to capture any water drops at all; and rain-sensing function on LX works maybe 10 times worse than on GX.
Tried all customization options but found nothing so far (save for the rear window wiper
The problem is solved:
(edit 13 May '14: some tweaks added to simply the process, following the Russian Lexus forum feedback on a similar post)
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(1) Test the rain sensor operation (the testing manual is here: Inspection.pdf)
Note that testing if the sensitivity adjustment (via the ring knob) takes effect requires driving at th