It often happens when you just have an oil change, but the oil change light still appears. Well, there is nothing to be worried about as the scenario takes place quite commonly. The reason here is the light needs to be manually reset. For that, you need to follow some instructions, ...
Unlike motor oil, transmission fluid is not burned off or consumed by a car so if the level is low then there is a leak somewhere that must be patched. It is recommended to top up the fluid anyway even if the leak still exists to make sure there is enough fluid for the transmission ...