Help bring back the full range of fan speeds with the Standard Ignition Blower Motor Resistor RU-742, a rear-position blower motor resistor for the 2012-2015 Mazda 5, designed specifically for Mazda applications. It is a direct replacement for the 2010 Mazda 5 and the 2012-2015 Mazda 5. See the Buyer's Guide tab for engine details on each application.
The blower motor resistor controls the voltage sent to the blower motor, which lets the HVAC controls select different fan speeds for the A/C and heater. When the resistor fails, some or all of the lower speeds can stop working.
Signs this part may need replacing: the blower runs only on its highest setting, or one or more fan speeds don't work. A faulty switch, wiring or blower motor can cause similar symptoms, so diagnose the cause before replacing the resistor.
Interchange: RU1431 · JA1826 · BR642 · CE4961B15
This part cross-references / interchanges with the following part numbers:
Which vehicles does the Standard Ignition RU-742 fit?
It is listed for the 2010 Mazda 5 and the 2012-2015 Mazda 5. See the Buyer's Guide tab for engine details on each application.
Is this a front or rear blower motor resistor?
RU-742 is cataloged in the rear position for the listed applications.
What does an HVAC blower motor resistor do?
It controls the voltage supplied to the blower motor so the HVAC controls can select different fan speeds for the A/C and heater.
What are signs the blower motor resistor may need replacing?
Common signs are a blower that runs only on its highest setting or fan speeds that don't work. A switch, wiring or motor fault can cause similar symptoms, so diagnose the cause first.
Which part numbers does RU-742 interchange with?
It interchanges with RU1431, JA1826, BR642 and CE4961B15.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
