ABS VSC and (!) lights and brake warning alarm

No but that constant beep that you have is related to what I have noticed to be some kind of pressure in the ABS accumulator or system that beep is on and it doesn't go away if it does while you're driving down the road the system is reached pressure I drove a car like this for almost a year and a half I can tell you all about it as far as that goes until you get that beep and that pressure cleared up in the accumulator or the ABS brake system that beep is going to stay that! ABS and VSC lights in orange are going to stay just because you don't hear the pump running all the time doesn't mean there's not an internal leak in the system maybe the pump is getting wore out and it doesn't run much anymore It gets hot and stops even worse Do you notice your brakes are very poor when the beep is on I'm guessing you're not driving the car?

 

If you looked here to learn how to take the blink codes: Blink (a/k/a Flash) Codes – How to. | PriusChat

... it also told you what ABS 42 and VSC 45 mean (they both just mean "look at the ECB codes", and also what ECB 41 means: "It means a problem with the voltage arriving at the brake system's electrical connections. The problem can be anywhere along the wiring path bringing power there, but it wouldn't be crazy to start by checking the 12 volt battery. If no glaring problem there, then the repair manual has the rest of the troubleshooting steps."

ECB 43 is trouble code C1377, pertaining to the backup electrical power supply for the brakes. It's the smaller box in the back of the car next to the 12 volt battery. If you can get access to a scan tool that shows INF codes, there are eight possible INF codes for C1377, to tell you more about the issue.

A Prius brake actuator is a complex machine with a bunch of valves and sensors and a lot of ways to fail. Running every few seconds is one of them. I often see posts like "I don't think I have an actuator problem, because I don't have the exact same actuator problem I read about somewhere else", but that doesn't really follow.

On the other hand, the codes you have don't point to an actuator problem, so it's fair to spend more time looking where they do point.

 

Toyota Service Information and Where To Find It | PriusChat

 

A good scan tool for the Prius is an Autel AP200, $55 to $60 at Amazon. Read this thread: https://priuschat.com/index.php?posts/3290690

 

ECB 41 is the same as the DTC C1241 and the diagnostic tree for that code has been posted many times in many posts.

It is reasonable to think there might be a problem with the DC/DC converter part of the Inverter but there are other things. There also are four sub-codes associated with the DTC C1241 – 81, 82, 83, and 84 – which can help focus the diagnostic effort. The six areas highlighted in the RM are:

• ABS NO. 1 relay
• ABS NO. 2 relay
• Harness and connector - Skid control power supply circuit
• Brake control power supply assembly
• Hybrid control system

Following the inspection procedure for the code will help narrow down your efforts.

 

Once you have the scantool set up through the app and connect to the car, go into the system you want to check. Then look at freezeframe data - one of the lines of data will be the detail (INF) code.


Posted via the PriusChat mobile app.

 

No mention of 512 in the ancient 2006-edition manual copy I'm looking in from the internet. I am baffled and have no answer. Maybe a current 2008 edition will shed light: Toyota Service Information and Where To Find It | PriusChat