Four Seasons A/C Trinary Switch 20949
Four Seasons A/C Trinary Switch 20949 - view 2
Four Seasons A/C Trinary Switch 20949 - view 3
Four Seasons A/C Trinary Switch 20949 - view 4
Four Seasons A/C Trinary Switch 20949
Four Seasons A/C Trinary Switch 20949 - view 2
Four Seasons A/C Trinary Switch 20949 - view 3
Four Seasons A/C Trinary Switch 20949 - view 4

A/C Trinary Switch for 1989-1991 Toyota Celica & More - Four Seasons 20949

Be the first to review this product
$75.99
MPN: 20949
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

Ask an Expert
Four Seasons A/C Trinary Switch P/N:20949
Four Seasons A/C Trinary Switch P/N:20949
$75.99

Keep your air conditioning system's pressure monitoring in check with the Four Seasons A/C Trinary Switch 20949, a system-mounted trinary pressure switch that installs as a direct-fit replacement for the 1990-1991 Lexus LS400 and 1989-1991 Toyota Celica. A trinary switch reads refrigerant pressure in the A/C system and uses that reading to protect the compressor and signal the cooling fan, so a worn or failed original can leave the system unprotected or the fan mis-triggered.

Mechanically, this switch senses refrigerant pressure and opens or closes its circuits to help guard against low- and high-pressure conditions while helping control the cooling fan. If a faulty original switch is the cause of your A/C or fan trouble, this replaces it.

  • Zinc coated to resist corrosion.
  • Includes gaskets, o-rings, or seals to properly replace the product.
  • Color coded for easy identification.
  • Vehicle-specific application for the listed models.

Backed by Four Seasons' decades of mobile A/C experience. See the Buyer's Guide tab for engine-level fitment details.

Interchange: 1551025 · 207761 · 11120949 · 19188173 · S20949 · 1711484 · 8864550010 · A07761 · MT0382 · SW10051

This part cross-references / interchanges with the following part numbers:

1551025, 207761, 20949, 11120949, 19188173, S20949, 1711484, 8864550010, A07761, MT0382, SW10051

Frequently Asked Questions

What does this trinary switch do?

It senses refrigerant pressure in the A/C system and uses that reading to help protect the compressor from low- and high-pressure conditions while helping control the cooling fan.

Which vehicles does the Four Seasons 20949 fit?

It's a direct-fit replacement for the 1990-1991 Lexus LS400 and 1989-1991 Toyota Celica. Check the Buyer's Guide tab for full application details.

Does it come with seals?

Yes. It includes gaskets, o-rings, or seals to properly replace the product.

Is it protected against corrosion?

Yes, the switch is zinc coated to resist corrosion, and it is color coded for easy identification.

What are signs this switch may need replacing?

A failing switch may cause A/C cooling problems or improper cooling-fan operation. Diagnose the cause first; if the original switch is at fault, this replaces it.

Related Products

!