Wiper sensitivity?
Only an issue because as a result I get rubber buildup on the windshield quickly and I get squeaking.
It also occasionally does a single random wipe on a dry day when I turn corners (seriously!).
My previous Lexus LS worked just fine so I know how it is supposed to function.
I am guessing this isn't normal ...

What about a wiring harness issue, have you checked the harness at the firewall area just where the wiper arms are attached? Some cars have had wear on the harness because of non-ideal routing.


