Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
KC-337
Correct Installation Of Permanent Electronic Log Devices ( eLog, E-Log )( Qualcomm, PeopleNet, GPS, Location Tracker, Etc.) On The Data Link; Installation Instructions And Information For Third Party ( Aftermarket ) Devices Connected To The Data Link
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.