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Fluorescent Dye Detection

NOTE: Ford Motor Company vehicles are produced with R-134a fluorescent dye installed in the refrigerant system from the factory. The location of leaks can be pinpointed by the bright yellow-green glow of the fluorescent dye under a UV lamp. Since more than one leak can exist, make sure to inspect each component, line and fitting in the refrigerant system for a leak.
  1. Check for leaks using a Rotunda-approved UV lamp.
    • Inspect all components, lines and fittings of the refrigerant system.
      Fig 1: Checking For Leaks Using Rotunda-Approved UV Lamp
      G04653749Courtesy of FORD MOTOR CO.
  2. If a leak is found, recover the refrigerant. For additional information, refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING  in this article.
  3. Repair the refrigerant system leak(s).
  4. Evacuate and charge the refrigerant system. For additional information, refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING  in this article.
  5. After the leak(s) is repaired, remove any traces of fluorescent dye with a general purpose oil solvent.
  6. Verify the repair by running the vehicle for a short period of time and rechecking the area of the leak with a Rotunda-approved UV lamp.
    Fig 2: Checking Area Of Leak With Rotunda-Approved UV Lamp
    G04653750Courtesy of FORD MOTOR CO.
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