The dcm is not a third party tracker like those installed by dealerships. It’s the connectivity module that powers toyota connected services etc.I just checked mine and it has the same part number on it.
The video I linked above suggested that not all of these trackers are hooked up via the OBD port. It discusses that these systems all seem to have a common fuse known as the DCM ( or DCM/Mayday) fuse. It also says that pulling this fuse does have some side effects as Toyota tied other specific features into the system to deter owners from simply pulling the fuse. One feature they mention is the in car microphone.
I am not familiar with any of these trackers and have no idea if any of the information in the video is accurate.
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