Four Seasons A/C Trinary Switch 20962
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Four Seasons A/C Trinary Switch 20962
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Four Seasons A/C Trinary Switch P/N:20962

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$34.99
MPN: 20962
Item Package Quantity: 1
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Four Seasons A/C Trinary Switch P/N:20962
Four Seasons A/C Trinary Switch P/N:20962
$34.99

Help your air-conditioning system manage refrigerant pressure with the Four Seasons A/C Trinary Switch 20962, a system-mounted trinary pressure switch. It fits many vehicles, among them the 1998-2001 Nissan Altima, 1999-2002 Nissan Frontier and 1997-1999 Nissan Maxima. It is a direct-fit replacement for the listed Nissan and Infiniti applications. See the Buyer's Guide tab for the full list and engine details.

A trinary switch combines three pressure functions in one unit. It is designed to cut out the compressor when refrigerant pressure is too low or too high, and it signals the cooling fan at a mid-range pressure. If a failed switch is behind a compressor that won't engage or a fan that won't come on with the A/C running, this switch replaces it.

  • Corrosion resistance: Zinc coated to help resist corrosion.
  • Vehicle-specific: Built for vehicle-specific applications.
  • Sealing included: Comes with the gaskets, O-rings or seals needed to properly replace the switch.
  • Easy identification: Color coded so it is simple to identify.

Four Seasons engineers and tests its A/C products and draws on more than 50 years of mobile air-conditioning experience. Diagnose the cause of an A/C fault before replacing parts, and follow the vehicle service information for refrigerant handling.

Interchange: 1551034 · 207774 · 11120962 · 921364P200 · 921374P200 · 921374S100 · 19188183 · 1711491 · A07774 · 2930215 · MT0589 · 26517 · SW10073 · SW10073C · SW11179C

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

1551034, 207774, 20962, 11120962, 921364P200, 921374P200, 921374S100, 19188183, 1711491, A07774, 2930215, MT0589, 26517, SW10073, SW10073C, SW11179C

Frequently Asked Questions

What does a trinary switch do on the A/C system?

It monitors refrigerant pressure. It is designed to shut off the compressor when pressure is too low or too high, and it signals the cooling fan at a mid-range pressure.

Is this a Nissan Altima brake switch?

No. Part 20962 is an A/C trinary pressure switch, not a brake light switch. It is listed for the A/C system on the 1998-2001 Nissan Altima.

Will this work as a Nissan Frontier switch for the A/C?

Yes, it is listed for the 1999-2002 Nissan Frontier. The Buyer's Guide tab shows every vehicle it fits.

What signs may mean the trinary switch needs replacing?

Signs can include a compressor that won't engage, A/C that cycles off unexpectedly, a cooling fan that won't run with the A/C on, or a leak at the switch. Diagnose the cause first.

What comes with the switch?

It comes with the gaskets, O-rings or seals needed to properly replace it. The switch is zinc coated to resist corrosion and color coded for easy identification.

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