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The Genuine Subaru OEM HVAC Evaporator Temperature Switch (Part #73540SA010) is an exact-fit replacement for the factory air conditioning system in 2003–2008 Subaru Forester XT models equipped with automatic climate control. This OEM sensor monitors evaporator core temperature to prevent freeze-up and ensure efficient, reliable cabin cooling — just as Subaru engineered it from the factory.
| Subaru Part Number | 73540SA010 |
|---|---|
| Part Type | HVAC Evaporator Temperature Switch |
| OEM / Aftermarket | Genuine Subaru OEM |
| Climate Control Type | Automatic (Auto A/C) |
| Application | 2003–2008 Subaru Forester XT |
This part is compatible with the following Subaru vehicles equipped with automatic climate control:
| Year | Model | Trim / Notes |
|---|---|---|
| 2003–2008 | Forester XT (FXT) | Automatic Climate Control only |
Important: This switch is designed for vehicles with automatic (dual-zone or auto) climate control systems only. Verify your Forester XT is equipped with automatic A/C before ordering. Cross-reference OEM part number 73540SA010 to confirm fitment.
The evaporator temperature switch is located within the HVAC evaporator housing, typically accessible from behind the dashboard. While some experienced DIYers may be comfortable with this repair, professional installation by a qualified Subaru technician is recommended, as dashboard disassembly may be required. No special programming is needed — this is a direct plug-and-play OEM replacement.
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