Where is the air conditioning refrigerant charging port on the BMW 5 Series?

[AdalynnRose]

Positioned at the interface of the thick pipe on the external unit, there are two additional nuts. Open them, and the refrigerant is added at the small nut. Inside the large nut, there is a hex socket; turn it counterclockwise two rounds to start charging the refrigerant, then tighten it clockwise after completion. Installation location: Generally installed on the top of the vehicle, with the external unit outside the car and the internal unit on the ceiling inside. The rooftop parking air conditioner increases the height of the RV by 23-30CM. Components included: Mainly consists of: condenser, evaporator, electronic control system, compressor, fan, and piping system. The terminal device utilizes the distributed cooling capacity to specifically manage the air state inside the cabin, providing truck drivers with a comfortable resting environment.