Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007EDGE FWD V6-3.5LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGREFRIGERANTDESCRIPTION AND OPERATION
2007 Ford Edge FWD V6-3.5L
Refrigerant: Description and Operation
2007 Ford Edge FWD V6-3.5LSECTION Description and Operation
REFRIGERANT SYSTEM DYE
A fluorescent refrigerant system dye "wafer" is added to the receiver/drier desiccant bag to assist in refrigerant system leak diagnosis using a Rotunda approved ultraviolet blacklight. This fluorescent dye "wafer" will dissolve after about 30 minutes of continued A/C operation. It is not necessary to add additional dye to the refrigerant system before diagnosing leaks, even if a significant amount of refrigerant has been removed from the system. Additional refrigerant system dye should only be added if more than 50% of the refrigerant system lubricant capacity has been lost due to a fitting separation, hose rupture, etc.
A fluorescent refrigerant system dye "wafer" is added to the receiver/drier desiccant bag to assist in refrigerant system leak diagnosis using a Rotunda approved ultraviolet blacklight. This fluorescent dye "wafer" will dissolve after about 30 minutes of continued A/C operation. It is not necessary to add additional dye to the refrigerant system before diagnosing leaks, even if a significant amount of refrigerant has been removed from the system. Additional refrigerant system dye should only be added if more than 50% of the refrigerant system lubricant capacity has been lost due to a fitting separation, hose rupture, etc.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.