Dorman 904-613 HVAC Pressure Switch

Reliable HVAC Pressure Switch for Audi and Volkswagen Models

The Dorman 904-613 HVAC Pressure Switch is designed specifically for select Audi and Volkswagen vehicles, ensuring precise control of your air conditioning system. This 12-volt pressure switch is engineered to work with R134a refrigerant, providing accurate pressure monitoring to maintain optimal HVAC performance.

Key Features of the Dorman 904-613 HVAC Pressure Switch

• Voltage: 12V compatible with standard automotive electrical systems
• Refrigerant Type: Designed for R134a refrigerant systems
• Pressure Limits: Opens at 20 psi and closes at 29 psi for reliable system control
• Maximum Pressure Rating: Supports up to 551 psi for durability under high pressure
• Connector: Black oval-shaped female connector with 3 male blade terminals
• Mounting: Bolt-on installation with a 0.125 inch thread diameter
• Housing Material: Durable metal construction for long-lasting use
• Specific Fit: Engineered for precise fitment on Audi and Volkswagen models

Detailed Description of the Dorman 904-613 HVAC Pressure Switch

This HVAC pressure switch from Dorman is a vehicle-specific replacement part designed to maintain the proper operation of the air conditioning system in various Audi and Volkswagen models, including the A3, Golf, Jetta, Passat, Tiguan, and TT series. The switch monitors refrigerant pressure within the system, opening and closing electrical contacts at preset pressure limits (20 psi open, 29 psi closed) to protect the compressor and ensure efficient cooling. Its metal housing and blade terminal design provide durability and secure electrical connections, while the black oval female connector matches factory specifications for straightforward installation.

Common Applications and Issues Addressed

• Prevents compressor damage by monitoring refrigerant pressure
• Helps maintain consistent air conditioning performance
• Resolves HVAC system shutdowns caused by faulty pressure switches
• Eliminates intermittent cooling issues related to pressure sensor failure
• Ensures proper cycling of the A/C compressor in Audi and Volkswagen vehicles

Installation Notes and Tips

• Designed for bolt-on installation; ensure thread diameter matches 0.125 inches
• Verify connector compatibility with the vehicle’s black oval female plug
• Disconnect the battery before installation to prevent electrical shorts
• Check refrigerant type (R134a) compatibility before replacement
• Consult vehicle service manual for torque specifications and safety precautions

Quality Assurance and Warranty Information

Dorman manufactures the 904-613 HVAC Pressure Switch to meet or exceed OEM standards for fit, form, and function. The metal housing and quality terminals ensure reliable operation under typical automotive conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in materials and workmanship for a specified period. Always verify warranty details with the product documentation or supplier.