RX Washer Fluid Warning Light

Greetings. I encountered a similar predicament with my previous vehicle, a 2016 Volvo XC60. The symptoms you describe – the persistent low washer fluid indicator despite refilling and the inoperative windshield washer system – mirror my experience precisely. In my case, the underlying issue was not simply low fluid but rather a failure within the washer pump motor itself. Specifically, the motor had seized due to corrosion and particulate contamination within the reservoir. It would be prudent to verify the operational integrity of the pump, as the sensor may be functioning nominally while the pump is defunct.

Thanks for the info. How would I check the washer pump motor on the Lexus? Is it a difficult job?

Verifying the washer pump motor's functionality requires a systematic approach. Firstly, confirm the electrical integrity by employing a multimeter to ascertain voltage presence at the pump connector when the washer system is activated. Secondly, assess the mechanical integrity by discerning if the pump emits any discernible operational noise or vibration upon activation. If voltage is present, yet the pump remains inoperative and silent, it is highly probable that the motor has failed. Replacement necessitates accessing the washer fluid reservoir, disconnecting the electrical connector and fluid lines, and physically removing the pump. While not exceedingly complex, familiarity with basic automotive repair procedures is advisable. Considering the potential for complications, engaging a qualified technician may be a judicious course of action to ensure proper diagnosis and remediation.

Alright, thanks a lot for the detailed explanation. I took it to a local workshop, and it turned out to be a faulty pump motor just like you said. They replaced it for around 25€, and everything is working fine now.