Odis_download_dest !full! -

Many users report that this folder grows rapidly, sometimes consuming dozens or even hundreds of gigabytes of storage. This often happens if the background service repeatedly attempts to download updates that fail to install.

However, based on typical naming patterns, it most likely refers to a used within SAP ODIS (Offline Diagnostic Information System) or a similar diagnostic tool for vehicles (especially Volkswagen Group). odis_download_dest