My 2010 LX with approx 140K miles has a very small leak in the washer fluid system somewhere. (We think). Every 1500 miles or so I get the "Low washer fluid level" warning sign. Never got it in 6 years, but now it's every 1500 miles. Dealer could not find leak. (Maybe it leaks to slowly?) I hardly use the washer fluid, but it's annoying to override this message every time I start the car. Anyone else experience issues with their washer fluid system?

 

Prior to delivery, at about 28,000 miles, Lexus records on my vehicle show the Low level indicator was staying on. Upon inspection, the washer tank level switch was found defective so they replaced it, so assuming the tank is intact it's probably the washer tank level switch.

 

Agree with the above poster and if you can not find the leak, it could be the sensor or is the tank empty when you get this warning.

Might be a good time to pop the hood in the morning to see if anything is getting wet below the water tank.