Rein OE Quality power steering pressure switches are manufactured to factory specifications using copper electrical circuit components for superior conductivity and low resistive losses. A P/S pressure switch serves two critical functions, the warning of low system oil pressure, and in some applications, the steering demand feedback for the ECU to control the engine speed during low speed steering situations. A sign of a failing or failed power steering oil pressure switch may include a warning light on the dashboard and or engine speed instability during low speed steering. Trust the quality of Rein's 100% tested OE fit, form and function automotive oil pressure switches