I own a Toyota Corolla Axio NKE 165 (2014). I have some query regarding the cooling system. Your kind advise and input would be highly appreciated.
On Friday, 8/March, when I started the car in the afternoon it was making some unusual noise and I had my mechanic come over and see the car. He claimed that the A/C motor was the cause and advised that I replace it. Also, the front shock absorbers were worn out, so the A/C fan with the shock absorbers were replaced and the car was handed to me on Saturday (next day). After which, I went for a short drive and everything seemed normal.
On Sunday, 10/March, I took the car and set off down the Katunayake highway towards Kandy, when I noticed an error message on the dashboard that read “check engine water / coolant level”. This error message popped up near the exit toll gate, so I drove to the nearest fuel station, about 1 to 2 km away, and checked my engine (the Coolant reservoir tank, not by opening the radiator cap). I was shocked to see that there was no coolant in the reservoir tank at all.
Later, I handed over the car to the mechanic and he is claiming that it is an issue with the “engine water pump” and that it needs replacement.
My query is;
1. How can all the coolant be lost suddenly? (note - there are no visible leaks including in the engine)
2. According to the mechanic, he claims that if the engine water pump stops working, then the coolant will overflow from the radiator/reservoir tank and it will be lost (his explanation for an empty coolant reservoir tank). Is this true? Can this happen?
3. Could all of this be due to some fault/error made by the mechanic during replacement of the A/C fan motor (as this fan also plays a vital role in the cooling process, according to somethings I read)?
Please note, there has been never an instance, before this, when the coolant level has been low. All this issue started after the replacement of the A/C fan motor.
Your kind advise would be a great help.