General Information For Replacing Components

WARNING: This page is about a different car, the 2022 Volkswagen ID.4 and 2021 Volkswagen ID.4. However, it is still accessible from the selected car via links, so may be relevant.

Immediately seal off any open connections and lines (moisture absorption) using plugs from the Engine Bung Set :VAS6122 , for example.

Replace the desiccant bag or the components with a desiccant bag (accumulator) if it is required for certain repair procedures or if the refrigerant circuit has been open for a longer period of time and moisture has gotten in (after an accident, for example). Refer to LEAKING OR DAMAGED COMPONENTS, REPLACING, EMPTY REFRIGERANT CIRCUIT EXCEPT A/C COMPRESSOR AND RECEIVER/DRYER .
The length of time that a refrigerant circuit may be left open without having to replace a component with the desiccant bag (accumulator) largely depends on ambient influences. Given a high ambient temperature and a high humidity level or if the vehicle, for example, has been standing in the open or driven (in wet, foggy weather conditions), the period will be considerably shorter than for a vehicle which has been standing in a heated dry area. The size of the opening through which moisture may ingress into the circuit also influences the period for which a refrigerant circuit can be left open without having to replace the component with the desiccant bag. Refer to LEAKING OR DAMAGED COMPONENTS, REPLACING, EMPTY REFRIGERANT CIRCUIT EXCEPT A/C COMPRESSOR AND RECEIVER/DRYER .