How to replace the intercooler (turbo air cooler) 03F145749B for 1.2 TFSI CBZB engine. Also, you need to clean the intake manifold.
All you need is a screwdriver torx T25, and new antifreeze liquid.
I did this because the intercooler was leaking, and had some engine errors, like codes P0300, P0301, P0302, P0303, P0304, P145A, missing antifreeze.