Where is the coolant located in the Jetta?

[MacRhett]

The coolant in the Jetta is located in a plastic container on the right side under the hood, next to the windshield washer fluid filler. Coolant prevents the freezing and expansion of the liquid in cold winter conditions, which could otherwise crack the radiator or damage the engine block or cylinder head. Generally, vehicle coolant should be replaced every 2 years or 40,000 kilometers. This is just a reference interval. For commercial vehicles that cover longer distances, the replacement interval should be shorter. Since driving conditions vary for each vehicle, the replacement should be based on actual usage. Regularly check the coolant level and top it up if it is low. If you notice any suspended particles, sediment, or discoloration in the coolant, replace it immediately and flush the system. The key indicators for coolant are its freezing and boiling points. In the market, coolants are available with freezing points of -15°C, -25°C, -30°C, and -40°C. It is advisable to choose a coolant with a freezing point at least 10°C lower than the lowest temperature in your region.