![]() UPDATE: I found this Toyota TSB that addresses this specific issue (although it is not 2016 Prius specific, so my assumption is the 16' Prius will behavior in a similar manner). I am guessing this means disconnect the Techstream laptop from the OBD-II connector (Toyota calls this the DLC3) and connect pins #4 (chassis ground) and #13 (timing check) together for at least 30 seconds while the vehicle ignition is in the "On" state. The error message (top of this thread) seems to be saying to connect the Timing Check (TC) pin to the Chassis Ground (CG) for 30 seconds to terminate this initialization.Īs a Techstream newbie I am hesitant on shorting anything to ground. But last year, Toyota had some parts delivery issues, and I could. The second set only requires the initial programming once, then you can toggle between the 2 sets using the head unit. I think the fact that the system (tire pressure monitoring ECU/system) is stuck in the initializing process is causing the registration failure. When I got my new set of winter tires and wheels last year, I was prepared to put OEM TPMS in. When you begin the registration there is a warning (below) that the registration will fail if " the system is still in the process of initializing". ![]() ![]() I upgraded Techstream to v11.20.19, but there is no change in the behavior (same error message after the last sensor ID is entered).
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