Earlier this morning, started up the engine and drove for like like only 500m, all of a sudden the temperature blinking light pops out with a constant ring... well I shut down the engine and restart again and drove all the way to Selayang from Cheras without any problems (the temperature light did not pop out).

Anyone can rectify this matter?
I'm driving a Polo Hatchback 1.6 2015, 23000KMs done, next service would be 34k.

Greatly appreciated.