Prius Washer Fluid Sensor Issue

I had a similar problem with my Prius. First, are you absolutely sure it's full? Sometimes the sensor is finicky. Also, do you hear the washer motor running when you try to spray? If not, the motor might be dead or there's a blockage.

No, I don't hear the motor at all. It's usually pretty obvious. Where is the motor located? And how would I check for a blockage?

The washer motor is usually attached to the washer fluid reservoir, often at the bottom. Given that there is an error stored in the error memory and you don't hear the motor, it’s best to have it checked by a workshop. It is possible that the washer motor requires replacement.

Turns out the washer motor was toast. 25€ later and everything is working great again. Thanks for the advice!