eengwissam

Thanks for your detailed help. I have forgot to mention that the coolant light comes on for few seconds before it disappears. This is why I was checking the coolant reservoir. Yes there is a plastic bottle indicating max and min, and this where my problem is, I cannot see any changes in the level between max and min but as you suggested I will try to use a red coolant, and see if there is any changes. The car does not overheat, as the radiator and coolant reservior consistently full.

Have you topped up the coolant? If so, can you please let me know if you can see red/blue coolant between level max and low. If I were you, I would check the radiator reservoir make sure it is full.

Thank you for your reply. No, the radiator cap is metal while the coolan cap is made of plastic and a tube connected to it. The coolant reservior levels (Max and Min) do not indicate any coolant at all, but once I open the coolant reservior, the plastic cap, I find enough water there. Even if I put more coolant it floods outside with the levels (Max and Min) show no coolant between them. The radiator on the other hand does not leak and holds the water rather well as the it is always full.

Hey. I have a Lexus IS200 2001 Manual. I have noticed that it was losing coolant, so I used a sealant poured into the coolant reservior. This was about three months ago. The sealant did its job. However, I checked the coolant reservior level it says its empty. By this I mean, the see through plastic did not indicate any water level. I opened the coolant cap, it shows me plenty of water. I tried to top it up but it overfilled. Now the radiator is full and it holds the water rather steadily. The mechanic wants to change the whole system, which I think is just waste of money and a decent radiator. It is worthy mentioning that I get steamy windows on the inside, which according to my knowledge refers to heat matrix leak. But the most furstrating bit is the level of coolant showing empty while clearly it is full. Any help is greatly greatly appreciated.