How to renew the coolant on the Audi A4 2011 to 2016

[@emilrdk]

I want to change the egr cooler and need to drain the coolant first. I assume is the same process for filling on my Audi a5 tdi 2018? And by bleeding, it means to wait for the bubble to get out? Thanks

[@Nicholas-ze5vv]

How do you flush it out though?