sandeep

Check all fuses and relays first. If still has problem, try driving very slow w/o any electronic like ight, radio, AC (try even w/o brake in an empty area) etc and see if this light still appear. If not start switching on things one by one and see what triggers this dash light to appear. So that you can run self diagnose once again and confirm the culprit.

As from problem what looks like its a very minor leak which is not noticeable by eyes under the car. Take some free time and very patiently look in the engine bay nicely in following area: Lift the coolant bottle and see under bottle if there is green marks of coolant leakage. Check the hose joint on radiator bottle Check around radiator all sides Check the two hose that goes in and out of radiator under the clamp Check same two hose at other end that goes in and out of engine under the clamp If you can figure out where is thermostat sits, check around that area If you know where is temperature sending sensor, check around that area. I am sure either of one place you will find some minor leak with green imprints or wet marks.