I had this come op on display today on my 2015 lariat 7.6 with 12000 miles on it
Has anybody had this happen or any ideas, no lack of coolant in tank. Thanks
Frank.

 

There is a test kit that is used to check the coolant it's supposed to come on from time to time you can either get the test kit or take it to the dealer and they will check it. The test will indicate wether you will need to add the additive or not.

 

Thanks Mike I went true the manuel last night and it states to have it checked every 15000 miles so sounds like it is youst a generick type of warning, may ignore till next oil change.