How much freon to fill 1999 Toyota?

To fill the air conditioning system of a 1999 Toyota, you'll typically need about 1.5 to 2.0 pounds of R-134a refrigerant. It's important to check the specific model and system specifications, as the required amount can vary. Always ensure the system is properly evacuated before refilling and consider having a professional handle the service to avoid overfilling and potential damage.