Originally Posted by GTyankee
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now they put the OIL SERVICE Indicator in the Rams, you can go by that, it is like sending a sample to a laboratory & having it tested for the % of oil life that it still has
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The oil service indicator light is not like sending in an oil sample to a lab. You will never get the accuracy from the oil change indicator that you will get from an analysis of the oil.
Here are two articles from Allpar about how the Chrysler oil change indicator works:
Chrysler adds Oil Change Computer
Fewer Oil Changes needed
from How Stuff Works that covers the systems in general.
I don't know if they can tell that the indicator was reset without the oil being changed, but I would not ignore it if you are under warranty. If it is coming on at only 2,500 miles you may want to find out why. Are you getting condensation in your oil or some other contaminant?