2009 Prius - ABS Actuator Out / HV Battery harm?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by HiJoe, Nov 3, 2021.

  1. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Hi All,

    I have a 2009 Prius with about 150K miles.

    A mechanic recently told me that he got a code for "ABS Actuator Out" which apparently means he would replace the ABS Pump assembly.

    (FYI, I didn't get any ABS light on my dash, I only went in for a Check Engine light.)

    The tech explained to me that this broken ABS Actuator (ABS Pump assembly?) somehow pulls current from the HV battery which in turn damages the HV battery.

    So his guidance was to replace the ABS pump assembly for a couple thousand dollars $$$ or risk damaging the HV battery which would be even more to replace $$$$$.

    I'm well out of my knowledge area, so any help is greatly appreciated.

    Thanks in advance!!!
     
  2. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,496
    7,927
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    If you went to this mechanic with just a check engine light, it should only be emission related parts that fail. Not the ABS actuator. I would highly suggest you take the car to another mechanic that won't be ripping you off.

    Damn when you live in HI even mechanics will treat you like a tourist, easy target on your back
     
    SFO likes this.
  3. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    4,580
    4,007
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Welcome to PriusChat!!
    Quite possible that the mechanics OBD2 code reader wasn't hybrid compatible.
    Maybe the code (DTC) that was retrieved wasn't "current", have you ever noticed the ABS light on the dash before?
    It might pull down the 12v when the vehicle is off. Do you hear the ABS pump running all the time?
    The new OEM pump new costs about 1100+, and a new battery is 1600 to 2100 (NiMh vs Lithium), there are other options for less that can be delivered to Hawaii. Both HV batteries would require installation. Do you have a DIY attitude and some basic tools for such?
    You might want to invest a couple of coconuts on a OBD2 bluetooth adapter to use with an App like Dr Prius or Hybrid Assistant, that way you can properly scan this hybrid vehicle without relying on others or additional expense. Before purchasing a OBD2 bluetooth adapter, read up here : Hybrid battery diagnostic and repair tool for Toyota and Lexus

    If you want the same level of diagnostics that the dealerships use and charge for, then you will need a mini-vci cable ($20) and techstream installed on a windows device.


    FYI : you're moderated until you've posted 5 times.
     
    #3 SFO, Nov 3, 2021
    Last edited: Nov 3, 2021
  4. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    16,835
    11,485
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The bigger problem is that the mechanic is so far out of his.

    There is no "ABS actuator out" code. The mechanic should have told you, first and foremost, what actual code(s) he read. Bonus if he told you the fortune cookie(s) also that go with the code(s). I'm usually on here explaining why the fortune cookies are next to useless information, but compared to some made up "ABS actuator out" that isn't even the real fortune cookie for any existing code, well, even the nearly-useless fortune cookies are more useful than that.

    There are some codes that the brake ECU can set only because it is aware of issues in other areas of the car. So it really matters to know what codes were read.
     
  5. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Hi SFO,

    This is supposed to be a "Prius shop." I was even referred there by the dealership, since they didn't have a tech available for a few days, so I think their scanner was probably compatible.

    There wasn't any light on the dash ever in the life of the car, and we're the original owners.

    For the ABS pump, I watched some you tube videos on the Prius ABS, and they show that small clicking sound in the engine that happens for about 3 seconds which I understand is the ABS pressurizing. That doesn't happen any more than it used to.

    For installing a new ABS, I saw the videos on that and for the few hundred bucks it would cost, I'd go to the dealership for that.

    I was thinking about getting an OBD2 scanner, but I understand some of the lower-end ones might not get ABS codes or might not get all of them? I have an iPhone so maybe a better way is to get a plug that can pair with my phone, then I can buy whatever app will read the ABS codes. Not sure if there's a recommended one I could rely on?

    The way the mechanic explained it, since there is a leak, the ABS has to repressurize and pull from the HV battery. He said this is happening all the time, even when the car is off, due to the leak.

    Thanks!!!

     
  6. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Yes, now that the car is getting older, I was thinking of getting a scanner that could pick up the ABS info and that I could continue to use going forward.
    Is there a good plug/pairing device that I could use with an iPhone app?

     
  7. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    ** Update **
    Hi All,

    I called the shop back to get the code as you suggested. The mechanic said he didn't have the code, but he was sure it was the one for the ABS failure.

    I went to an auto parts store where they have a pretty decent looking OBD scanner that they'll scan your car with. It came up with no codes at all for my Prius!

    The only thing I can think of now, other than this just being a rip off, is that maybe there's a better scanner that might pick up more codes? The one at the auto shop definitely didn't look like a cheapo one, so I'm thinking this is just a straight up rip off.
     
  8. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    97,602
    44,281
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    tech stream, or at least dr prius
     
  9. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    16,835
    11,485
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Brake system codes can be retrieved using no scan tool at all, just a short piece of wire and a little counting of dash light blinks.

    This turns out to be handy again and again and again, both for people who are caught with brake warning lights and no scan tool in reach, and for people who have a scan tool that isn't giving them the codes.

    Are you noticing frequent cycling of your brake pump?

    I haven't heard many stories about it continuing to run forever while the car is off; typically the brake system goes to sleep a couple minutes after the car is powered off, and wakes up when the driver's door is opened. If it is never going to sleep (a) I'd think you'd notice that, and (b) it would probably indicate more than one thing wrong.
     
  10. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    4,580
    4,007
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Hope the prius shop didn't charge you for that code scan. Seems odd that the dealership didn't have someone around that could plug in a cable to do a quick OBD2 scan, and then charge you 100+ (or does Servco charge 200?) for 5 mins of work.

    Sounds like the 'prius shop' person might be confusing your vehicle with another that has a brake issue, or thinks there is a wallet in the wide open position. Given what little we know about the business/owner/technician, you might want avoid this shop going forward, even if the local stealership recommends them. They are either looking for a quick buck, or a discounted 2009 to add to their fleet/showroom.

    Is the check engine light still on?
    Do all of the warning lights briefly flash or appear when you first start the vehicle?
    Unlikely that a dealer (especially Servco Toyota in Hawaii) would do the labor for only few hundred, but if they do please let us know. Still can't believe they sent you packing to an independent shop either.
    Did you use the link mentioned above (and now below) to read up on the different OBD2 adapters, and which not to buy?

    Hybrid battery diagnostic and repair tool for Toyota and Lexus

    Besides the iphone, do you also have a ios/winblows laptop available?
    Calling BS on the mechanic. Only the inverter and the AC would be using the HV battery, and never when the car is off.
     
    TheLastMojojomo and Raytheeagle like this.
  11. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Wow -just saw the Tech Stream demo on You Tube! Fantastic!!!!!!

     
    bisco likes this.
  12. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    For "cycling of the brake pump" is it that brief ticking sound from the engine that lasts for a few seconds? If so, no, that's no happening very much at all.



     
  13. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    97,602
    44,281
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    it is the buzzing sound you hear when opening the drivers door to get in. then it continues at some pushes of the brake pedal to replenish, but less audible because the car is running
     
  14. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    16,835
    11,485
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    I think it sounds a little bit like a toy rattlesnake rattling for a second or two. (Does anybody make a toy rattlesnake? Kind of disturbing....)

    If you're at all unsure what sound that is, you can just sit still in the car and push the brake pedal a few times, until you hear it. Then you'll think "oh, ok, that sound."
     
  15. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    I just went to an auto parts store that said they loan stuff to customers, and asked them to scan it, so it was free.

    That Tech Stream program looks fantastic, so I'm thinking if I get that I can see if there is some different ABS code that a generic scanner didn't see maybe?

    I will definitely avoid that shop especially if I can't find any ABS code, even with Tech Stream. Funny thing is, the shop I went to has a better reputation than the Toyota dealership which are the main/only options in my area. :-(

    I intend to get the cable and to run Tech Stream on my Macintosh. I saw the cable has some electronics in it, I hope there's no problems with some viruses, etc on the cable or the software.

    The reason I went to the independent shop was that here they only have Prius techs available on certain days, and I told them I only had the one car and needed to get it fixed asap.

    The check engine light was fixed. I got a new.... (err, showing my ignorance here) coil, ignition coil and plugs which seemed to have been the issue with a misfire code they saw. Anyway, yes, fixed or at least the light is off on the dash.

    As for all the lights on the dash, yes they all come on and the go off when I start up.

    For my understanding, the HV battery the one that moves the drivetrain, right?


     
  16. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    4,580
    4,007
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Since you have an iOS device, you will need an emulator. Here is one example : Oracle VM VirtualBox
    Yes, as does the engine, and both together as well.
     
    Raytheeagle and bisco like this.
  17. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Yes, I know that sound well.

    It does happen from time to time, but certainly not frequently or constantly which sounded like what that mechanic was describing was happening to re-pressurize the brake system due to a leak.

     
  18. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    97,602
    44,281
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    when the lights come on, it is a system check. if they all go out, you're good
     
  19. HiJoe

    HiJoe New Member

    Joined:
    Nov 3, 2021
    12
    2
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    Two
    Hi ChapmanF - I'm curious what technique you're referring to when you said that "Brake system codes can be retrieved using no scan tool at all, just a short piece of wire and a little counting of dash light blinks."

     
  20. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    16,835
    11,485
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The repair manual shows codes for the brake system with the five character code you would see on a scan tool, a slash, and the corresponding two digit code that gets blinked on the dash when the Tc and CG pins are jumpered together at the diagnostic connector.

    This is the frustrating thing about a forum site as opposed to something more like a wiki. (There is in fact a wiki on this site, but it gets very little love for whatever reason.) On a wiki you can explain something once and people find it. On a forum you explain the same thing eighty seven gazillion times.

    This is one thing I think has been covered enough on PriusChat that if you made a search phrase out of some of the stuff in the first sentence above, you'd find a bunch of posts explaining it, some fairly completely. I hope this doesn't come across as personal, it's more me ... this topic in particular just feels like one I've burned out on writing repeated explanations of.

    Kind of a shame too, as it is such a useful thing to know about, given it works wherever you are if you get caught with warning lights and no scan tool handy, and it seems to stay such a well kept secret, and people still post questions and get two pages of replies telling them if they don't have X software and Y hardware to scan with, they can't find out the codes.

    The limitation is not all the ECUs in the car can do the blink trick. The brake ECU is one of the ones that can, and that's handy, because brake warning lights seem to be among the more common ones to get.
     
    #20 ChapmanF, Nov 5, 2021
    Last edited: Nov 5, 2021
    mr_guy_mann and SFO like this.
Loading...