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.
TERE-070821-004
SA696 Contamination in Auxiliary Power Check valve: Informs service personnel that the check valve will not function if contaminated. The only time the check valve is needed is when auxiliary power option are used. If not checked as part of the daily pre-shift inspection the Auxiliary Power may not function when needed.
tere04072020PN67
Advisory to move the lanyard location on end mount aerials to a position the lanyard snap hook can not hang into the platform.
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.