Where is the water tank filler port on the Envision?
3 Answers
The water tank filler port on the Envision is located at the top of the radiator. Simply unscrew the radiator cap to add coolant. The radiator is situated in the front compartment of the engine. The radiator is marked with a warning not to open the cap when the engine is hot. Do not add ordinary water (tap water or mineral water) to the car's radiator. Coolant composition: Coolant is primarily composed of ethylene glycol and water, meaning it is an aqueous solution of ethylene glycol with certain electrical conductivity. Function of coolant: Coolant prevents the freezing of the liquid in the cooling system during cold winter parking, which could otherwise cause the radiator to crack or damage the engine block or cylinder head due to expansion. Coolant is not just for winter use but should be used year-round. Regardless of the color of the coolant, it should maintain a certain level of transparency. Cloudy products are not of good quality.
I've been driving the Envision for seven or eight years, and I check the coolant level every time I service it. The filler port is at the front right of the engine bay—that translucent plastic tank is the coolant expansion reservoir, with a triangular thermometer-like symbol on the cap. Standing in front of the car, the container with white liquid next to the battery on the right is the one. I usually check the level when the engine is cold to ensure it's between the MIN and MAX marks. If it's low, I unscrew the blue cap and top it up with the same type of antifreeze. But I must remind you not to do this when the engine is hot—my neighbor once rushed to add coolant and ended up with blisters all over his hands. Also, I check it every month when I wash the car. If the level drops too quickly, there might be a leak at the hose connection.
As a mechanical enthusiast, I've studied the cooling system structure of the Envision. The coolant filler port is actually the white plastic expansion tank on the right side of the engine bay, located near the headlight assembly. The semi-transparent tank design allows easy observation of the green or red coolant level, and the cap usually features a snap-on mistake-proof design. To confirm the correct location, look for the English "Coolant" marking on the side of the tank. It's recommended to wait two hours after engine shutdown for the system to cool before opening the cap - I've seen cases where unpressurized operation caused antifreeze spray. Actually, this position is more reasonable than older vehicle designs where the filler port was hidden behind the radiator and hard to find.
