Corolla GLi 2015 heat up light

[engnr.mubashir]

So my corolla 2015 GLi auto starting to heat up without any provisional reason heat indicator crossed half mark reached all they way to heat point and heat ip light came up.
I took stop and checked radiator fan and it was working perfectly.
What could be possible reason I have planned to check for operator of T valve on gas stove inside some pot filled with water.

[startechautos270]

1st ur check ur car radiator is cleand after that t vale

[engnr.mubashir]

Have checked the T valve and is working properly opened it 2 to 3 times.
Will get the radiator checked today for any chokes etc.

[haseeb.basharat]

Have checked the T valve and is working properly opened it 2 to 3 times. Will get the radiator checked today for any chokes etc.

What are you using? Water or coolant? If coolant then which one? In how much time it heats up?
Any check lights?

[engnr.mubashir]

Using water but didn’t notice how much time it took to be opened.

[haseeb.basharat]

Using water but didn’t notice how much time it took to be opened.

Check water body whether it's even working or not, or chocked with rust.

Use havoline or Toyota coolant only.
Water isn't recommended to cool down the engine.
Even if you need to top up you need coolant for that.

For havoline, use two bottles of havoline and 2L distilled water.

[engnr.mubashir]

Thanks will check and replace water with coolant.

[engnr.mubashir]

Query resolved radiator was almost choked got it properly cleaned and that’s now going perfectly.
One thing more to mention in my old posts I was complaining about knocking on certain rpm after some time car running in the city and guess what that was because of this heating issue as coolant temperature was reaching 99 to 100 sometimes 102 degree centigrade that supposed to reach maximum of 98 degrees centigrade as fan speeds up reaching 98 degrees and temperature drops to 92 then it slows itself.