Dear Experts, this is my first time here and i really need your help. Have tried all local maintenance spots but cant get it resolved. I have recently purchased this 2012 Gen 3 Prius JDM imported from Japan. It is with LED parking lights and HID low beam. At day there is no issue with lights Off, even no issue on parking lights On but as soon as the headlights are turned On i get the fault indicator and some warning in Japanese language on inner screen. Apparently, all lights on the other hand are working fine. When i took the car to repair shop, they installed the diagnostic computer and it showed B2430 and B2431, LED headlight RH and LH, whereas my model is with HID headlights, not LED headlights. At day its ok, i get normal info on inner info screen but at night this error triangle and error message keeps showing instead of normal info and is a cause of fear for me as well because i dont know how serious it may become. Your help is really needed.
Thanks for replying. Auto leveling apparently is working fine. The only error i am getting on screen is as above in pictures and if connect with diagnostic computer it show: B2430 LED headlight RH B2431 LED headlight LH
Tried dear, kept terminals off for few minutes, but error is still here. Also, Reset by diagnostic computer was already done by workshop but not resolved.
the only thing i can find is passenger seat heater, malfunction or performance. but that's for gm and probably doesn't apply. are you using toyota tech stream to scan for codes?
Those are the Prius G HID lowbeam headlights. There are several members here on priuschat that have retrofitted them on their Gen 3 vehicles. IIRC, there is an extra sensor wire for an ECU that is present on LED equipped cars. It sounds like the Prius G headlights either lack this signal wire, or it is not connected. Hopefully, another member will chime in soon. I don't think you need to worry about the error though. It's not serious, just annoying to get it all the time.
OP, check out this thread: Is there a fix for the LED headlight" chi headlight system" error???? | PriusChat It is exactly as you describe, where a Prius originally equipped with LED is fitted with the HID headlights and an error is encountered. Perhaps you can send a private message to the OP, sfv41901 to see if he ever resolved the problem?
Yes, and the code was B2430 and B2431, both of which also give in description for LED headlights RH and LH
Ok c Ok checking this out. But i imported this vehicle myself from japan and original pictures of vehicle also show these headlights and not the LED versions with distinctive extra small projector lenses. But, its a possibility that original owner and user in japan changed those or something... I think i can check this in a way, my mechanic has an imported pair of LED headlights he got online for someone, i can request to get those connected and check if error stays or not.
I have checked the thread and yes it seems to be similar in nature, but i have just checked wiring connections on both headlights and no unused wire or connector found. Will thoroughly check once again
Thanks to sfv41901 and all others, following is the progress till now: 1- The BCM in car is 89221-47140, no way of knowing till now what part number to look for replacement which is for HID lights. There are some BCM online for sale but how to know which one is for me? 2- A person told me that each LED headlights connector has 5 wires, 2 for LED, 1 for computer (which checks if LEDs are working fine) and 2 for parking lights LEDs. 3- I was advised that as i have HID lights installed so the 3rd wire, for computer must be free and if connected with live wire of HID, it will remove the error as computer thinks its working. 4- When i opened the wiring, it had only 4 wires, 2 for HID and 2 for Parking Light LED. It seems someone who swapped the LED Headlights also swapped the wiring harness under the hood. 5- Is it possible to know which 2 wires or pins on BCM correspond to that signal from LED Headlights? I don't have any wiring diagram for BCM and neither could find online but i wish to try this to connect those wires with HID power line to see the results.... Any help on this is requested...
So i gotta same issue as like you, btw i am from #Mongolia. So here in my country nobody can fix this issue and im having trouble with this. But as written above it seems does not seriouz problem hehe. But i dont like it when this message flashes on the screen. So finally did you fix it