So I have an audi a4 2008. Had some oil problems with it but the car went in for service and now that is all good. After we got the car back I put gas in the tank since it had under 20 miles left worth of gas. Got 25$ worth which usually fills up the tank halfway. When I did that, shortly after the engine light went on. We called up the dealership and the guy said that is probably because air is in the engine. We have to open up the gas tank thing on the side of the car every once in a while. The issue should resolve itself after 65 miles. I havent driven 65 miles but the light is on after another half a tank of gas.

Anyone heard of this problem before? Is that all that this light is and it will probably go away soon? Thanks!