Brake abs vsc lights on after 12v battery replacedreplace

If your car is starting and you can drive it, it's usually not the fault of the 12v battery. Many here have suggested that to be the magical fix when you see warning lights, but it's rarely a fix for anything other than a truly dead battery.

 

I guess you were hoping that replacing the 12V would solve your problem, but it is always a mistake to spend money on something that "might" solve a problem without digging deeper into what is really causing it.

With the combination of lights glowing on your dash, the paper clip method of analyzing what is wrong (described here) costs nothing and will point you in the right direction, even if it is not a quick fix. (Unfortunately, many Prius owners seem to believe that their problem can be solved merely by connecting a paper clip to the right pins in the OBDII port, but this method is really only for finding what is wrong, not solving the problem).

Best of luck, whatever you find.

 

The advice is good, but that particular thread makes a kind of confused show of how to do it. After placing the jumper wire and turning the car ON, be sure to count the blinks on all the dash lights that are blinking, and make sure to write them down organized by which codes were blinking on which lights. They are listed in separate tables in the repair manual, and some of the two-digit blink codes overlap; you get the wrong idea if you look one up in the wrong table.

The goofy thing in the thread that was linked above was that the person only posted the 45 that blinked on the traction light—which is a code that means "look at the ECB light for the codes that matter", but no codes from the ECB light were included in the post.

 

Sorry, I was looking for a YouTube video, but all I could find was one where the guy connected the pins properly, but then didn't understand why the lights didn't magically disappear.

 

Yeah, I'm getting that sense. @Johnms2011: were the lights on prior to 12 volt swap?

 

I'm guessing that's what the 'still' meant in that sentence, though it wasn't clear from just the thread title....

 

What were the codes you found before you cleared them? I'm having the same problem with those lights, except none of my scanners show any codes in the system.

But my ScanGuage gives me an option to "force clear", even though there are no codes shown. I don't know what that means and I don't want to mess with that until I get to find what codes might be hidden in memory after my new Techstream gear I ordered comes in next month.

But if it is harmless for me to try it now I'd like to try it and get my car back on the road.

 

That's because none of your scanners are capable of talking to the ecu's that have codes.

AFAIK ScanGauge only communicates with the ECM (engine computer).

Techstream is a good plan.

Another option is to look at the sticky thread at the top of the Technical Discussion forum to read about app and OBD device reviews.

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