The other day i had the coolant light and error popup while driving (first time its happened)

The Tiguan is 800km's away from its first service, sure enough i pulled over and the coolant res is basically sitting on the low marker, obviously during driving the level moves around and has triggered the sensor.

Should i be worried? Its only done 14,000kms or is it too early to tell if there is a problem? Ive not noticed any coolant on the floor ever and there doesn't seem to be any obvious visual leaks

I would have thought that if there was an airlock or bubbles from filling at the factory that i would have had this problem well before 14,000kms as surely by now the coolant system would be well bled

hmm