Four Seasons HVAC Blower Motor Resistor P/N:20181
Searching for a Four Seasons switch for a heater and A/C fan that has lost speeds? Meet the Four Seasons HVAC Blower Motor Resistor / Blower Motor Control Module (P/N 20365), a direct-fit replacement for the front HVAC system. It fits many Hyundai and Kia models, among them the 1999-2005 Hyundai Sonata, 2005-2019 Hyundai Accent and 2001-2006 Hyundai Tiburon — see the "Vehicles it fits" section for the full list.
This component regulates the current feeding the front blower motor so the fan runs at each selected speed. When it fails, you may lose one or more speeds (often the lower settings) or the blower may stop responding altogether. If a faulty resistor/module is the cause of those symptoms, this unit replaces it — diagnose the circuit first, since other faults can share the same signs.
Note: this part is listed under both names — the catalog part type is a switch/resistor, while the manufacturer copy calls it a blower motor control module.
What does this Four Seasons 20365 part do?
It regulates the current sent to the front HVAC blower motor so the fan runs at each selected speed. A failed unit often causes lost speeds or a blower that won't run.
Is this the right 1999-2005 Hyundai Sonata switch?
Yes — it's listed for the 1999-2005 Hyundai Sonata, along with many other Hyundai and Kia models. Check the "Vehicles it fits" section to confirm your exact year and vehicle.
Why is it called both a resistor and a control module?
It's listed under both names. The catalog part type is a switch/resistor, while the manufacturer copy calls it an HVAC blower motor control module — it's the same part.
Does it include any seals or gaskets?
Yes. It contains the gaskets, o-rings, or seals needed to properly replace the product, and uses OE-style connectors for a plug-in fit.
My blower only works on high — will this part fix it?
Losing lower fan speeds is a common sign this component may need replacing. If the resistor/module is the cause, this replaces it, but diagnose the circuit first since other issues can share the symptom.
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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.