HOW TO RECHARGE AC SYSTEM ON LINCOLN MKX MKS MKT MKZ NAVIGATOR AC NOT WORKING FIX

Introduction

This tutorial will guide you through the process of recharging the air conditioning (A/C) system in Lincoln MKX, MKS, MKT, MKZ, and Navigator models. If your A/C is blowing hot air, this step-by-step guide will help you diagnose and fix the issue by recharging the system effectively.

Step 1: Gather Necessary Tools and Materials

Before starting the recharging process, ensure you have the following tools and materials ready:

• A/C Pro Recharging Kit
• Thermometer
• Safety goggles and gloves (for protection)

You can find the recommended A/C Pro Recharging Kit here and a thermometer here.

Step 2: Locate the A/C Service Ports

1. Open the hood of your Lincoln vehicle.
2. Identify the A/C service ports:
   • The low-pressure port is usually located near the accumulator (a metal canister).
   • The high-pressure port is typically found near the compressor.

Make sure you can easily access these ports, as you will be connecting the recharging kit to them.

Step 3: Check the Current A/C Pressure

1. Attach the pressure gauge from the A/C recharging kit to the low-pressure service port.
2. Read the gauge:
   • If the pressure is below the recommended level (usually indicated in the kit), you will need to recharge the system.
   • If the pressure is adequate, the issue may lie elsewhere in the A/C system.

Step 4: Prepare to Recharge the A/C System

1. Ensure the vehicle is running with the A/C set to the maximum cool setting.
2. Set the fan to high to help circulate the refrigerant.

Step 5: Connect the Recharging Kit

1. Remove the cap from the low-pressure service port.
2. Connect the hose from the recharging kit to the low-pressure port. Ensure it clicks into place securely.

Step 6: Recharge the A/C System

1. Start the recharging process by following these steps:

   • Open the valve on the canister to let refrigerant flow into the system.
   • Monitor the pressure gauge as you add refrigerant.
   • Stop adding refrigerant once the desired pressure level is reached.

2. Check for leaks:

   • Inspect the connections and hoses for any signs of leaks. If you suspect a leak, it’s advisable to have it professionally diagnosed.

Step 7: Final Checks

1. Disconnect the recharging kit from the low-pressure port.
2. Replace the cap on the service port.
3. Turn off the engine and check the A/C performance.

Conclusion

By following these steps, you should be able to successfully recharge the A/C system in your Lincoln MKX, MKS, MKT, MKZ, or Navigator, restoring its cooling efficiency. If the problem persists after recharging, consider consulting a professional mechanic to diagnose potential issues. Regular maintenance and checks on your A/C system can help prevent future problems and ensure a comfortable ride.