I have a wicked bad habit of overexplaining things, so here's my best attempt at a quick run down: • I got the speed sensor and hub replaced what hitting a pothole. • Less than a month later, the car flashed an error on the screen saying I needed to put the car in park. Additionally the dash lit up like a Christmas tree, so I immediately parked. • I ran a scan using this Hyper Tough HT500 Bluetooth Scan Tool. I've attached the results. • Evidently, my trunk had a leak, and water pooled in the bottom, including around the 12v. • I undid the 12v, and trickle charged it fully before reinstalling it. • I cleaned up at the water and tried to dry everything best I could, including areas around the hybrid battery. • I haven't had any error lights again since then, but the fuel system is acting hinky. It seems like the engine is always on. e.g. I drove 18 miles, but the gauge said I used 40ish miles. In less than a mile of that, the gauge dropped 10miles. Think I should try this?
Quite a stretch of events. Do you record your car's fuel consumption for each trip? Did the economy get worse immediately after replacing the speed sensor? Or did you not pay attention to it? Many ECUs adapt their systems to the current electrical parameters during long-term operation, and disconnecting the 12V power supply resets them to the initial level. When connected, the ECU starts the process over again, which can introduce some errors into the already adjusted operation.
That video has come up before; it's made by someone who doesn't even know what he has done with that paper clip. There are a handful of different relearning and resetting procedures that involve a jumper between those two pins (or the next pin over). They're described in the repair manual for anyone really needing to know how to use them. Toyota Service Information and Where To Find It | PriusChat There's a bit of information about them on this page: Blink (a/k/a Flash) Codes – How to. | PriusChat I don't see anything in your case suggesting any of that is necessary. Your displayed miles remaining is an estimate based on the fuel in the tank and the car's record of your average MPG. Right after the average MPG has been reset (or lost because the battery was disconnected), the calculation bounces around a lot, while the denominator is just the small number of miles driven since reset.
