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lt shouldn't be possible unless you've put dirty water in the reservoir bottle.
ls the motor running but no water coming out of the jets at all? They don't run constantly, only on the upsweep of the wiper.
I recall them visibly spraying out, and recently only seen to rinse along with the wiper if that makes sense. This seems to have changed after I completely coated my vehicle in mud on a recent excursion.
FWIW mine is a 2020 model, I believe the design in the 2023+ wipers may be different.