Hi guys. There's two more things you might be referring to. One is the Chrysler Co-pilot. That's a portable unit that can be plugged into the data port to record what's happening when an intermittent problem occurs. That can travel with the vehicle owner for days or weeks if necessary. It can be set to record sensor data for a specific system. That, along with other operating conditions, can be replayed later to see what inputs or outputs changed as the event unfolded. Since the data passes through its memory, just like with the "record" function on scanners, the recording actually begins a few seconds before the "record" button was pressed.
To expand on two of Sean's comments, the second thing you may be referring to has to do with data stored in the Air Bag Computer and Anti-Lock Brake Computer. Those record operating conditions leading up to those computers going into action. For example, if you're in a crash, those computers will show whether the brake pedal was pressed, and for how long and how hard it was pushed. Vehicle speed is also recorded. Some people don't like that because it can prove you were speeding, but it can also prove you were not speeding. That information can only be retrieved by Chrysler. I've been told law enforcement agencies can read it too, but that might only also be through Chrysler.
A different type of event recorder we rarely discuss has to do with warranty work. When any defect is detected by the Engine Computer and it sets the appropriate diagnostic fault code, even after we erase those codes, a permanent record of it is kept in that computer. If a disagreement comes up, such as whether proper procedures were followed related to a recall, Chrysler engineers can take that computer and verify the fault in question really did occur, and how long it took to diagnose or how many repair attempts occurred. Chrysler instructors tell us that record is permanent going back to when the vehicle was new. I never thought to ask what the ramifications are related to installing a used computer into a different vehicle. This permanent record capability goes back to at least the early '90s when none of this silly programming to the vehicle's VIN had been dreamed up yet, so any good used computer could be transplanted into any similar model. Only Chrysler can retrieve that data. That information might be useful in a lawsuit, but I don't know what kind of legal standing it would have.
Thursday, June 9th, 2022 AT 10:26 AM