Four Seasons 20959 A/C Clutch Cycle Switch

Four Seasons 20959 A/C Clutch Cycle Switch

The Four Seasons Pressure Switch, part number 20959, is a system-mounted A/C clutch cycle switch built for HVAC pressure control in automotive air conditioning systems. It uses a 12V electrical design, a 2-terminal male pin connection, and an M12 x 1.50 female thread for direct pressure-switch service.

Compatible with 2004-2005 Lincoln Town Car applications, this Four Seasons 20959 pressure switch meets or exceeds OEM requirements and is built with a plastic and metal construction for system-mounted installation. This part cross-references Global Parts Distributors LLC 1711532 for the same application.

Key Features

• Pressure switch / system mount design for A/C clutch cycling control
• Female fitting with M12 x 1.50 thread size
• 2-terminal male pin electrical connection
• 12-volt operation with weather pack protection
• Open at 0 psi and low-off operate pressure at 19 psi
• Plastic and metal construction
• Meets or exceeds OEM specifications

Detailed Description

Four Seasons 20959 is an A/C clutch cycle switch used in automotive HVAC systems to monitor refrigerant pressure and help regulate compressor cycling. The cycling style and system-mount layout make it a direct-fit pressure switch solution for service work on the air conditioning circuit. For 2004 Lincoln Town Car and 2005 Lincoln Town Car vehicles, this pressure switch supports accurate pressure-based compressor control and replacement of a worn or failed original unit.

The Four Seasons Pressure Switch line focuses on pressure-sensing components for HVAC service, and this part follows that approach with OE-level fit and function. The included 24676 component reference is listed by the manufacturer, and the switch is built for weather-pack protected electrical connection in demanding underhood conditions.

Common Problems This Part Can Help Solve

• A/C compressor cycling too frequently or not cycling correctly
• Loss of compressor engagement caused by a failed pressure switch
• Incorrect pressure signal to the HVAC control circuit
• Air conditioning performance issues tied to pressure-switch failure
• Electrical connection problems at the system-mounted switch

Installation Notes and Tips

Install the switch on the system-mounted pressure port and verify the M12 x 1.50 female thread, terminal style, and connector layout before replacement. Confirm refrigerant system condition and electrical continuity during diagnosis, and compare the original switch configuration to the Four Seasons 20959 before installation. For Lincoln Town Car service, verify the vehicle’s HVAC pressure-switch application against the original part number and connector style.

Quality Assurance

Four Seasons 20959 is listed as meeting or exceeding OEM requirements for pressure-switch service. The part is built for automotive HVAC use and is intended to restore proper pressure-based A/C clutch cycling in confirmed applications such as the 2004-2005 Lincoln Town Car.