Flypenfly

Wanted to check on the pressure of the AC but not clear to me which port I should be reading from in a 2013+ GLK350?

Anyone have a guide?

Plutoe

Look to the covered shrader valves---once you find them what are you going to do next----then you need to know the capacity of your system---then you need to know high and low bar and have some experience reading the gauge----do a search or go to night school and enroll in a twelve week air con course---then make a you tube vid and you will become a famous DIY'er