hey there i just drained the old coolant ... the way i did it was jacked the car up and used jack stands (safety first ) then from there i unskrewed the drain butterfly under the radiator ..... then it kinda took a while to drain cuz all of my caps were on but then i unskrewed the top cap (where the water pump is ) then the water drained and i bet a whole bunch of air in from there but yea i filled the top (where the water pump is at) all the way untill filled up and then i turned it on and waited and waited and it kepted spweing out coolant thru the top neck where the pump is at ...... nothing happened and i just opend the bottom one and still nothing happened im confused ... but yea can anyone help me out the buzzer is going off and fukken its annoying but i dont wanna blow the engine but yea i have 5k on the motor soo yea im confused

 

This thread is still here?
I seen like 10 of them from the past week.
Some say Oil Level but in your case sounds like Coolant..
Start the car with the filler open, keep adding coolant till it's full.
(Oh yeh, that's the water filler neck you're talking about. by the the water pump. for S4 I think.)
U prlly got air in the system
I use the one by the Passenger side headlight too..