During their training, PSA microchips every technician. Like ignition keys, this microchip works on proximity to the (same) transponder. When within five feet of the unit, it sends an "elevated alert" to the various ECUs. This means the assorted modules are switched to a hyper-sensitive mode, so even the weakest signal from a dying sensor is read clearly.
As a result, nothing ever appears wrong.
There is a trailing lag on the response, so for the next twenty minutes following last microchip detection, the elevated alert remains... Does this seem a reasonable postulation?
