RF jamming my hybrid system

Discussion in 'Gen 3 Prius Technical Discussion' started by Michael Kent Handy, Oct 12, 2023.

  1. Michael Kent Handy

    Michael Kent Handy Junior Member

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    I have a NIMH battery and I'm using regeneration systems to help it. It's in a 2011 prius, and close to 200,000 miles, but the used dealer did replace some bad cells before I bought it, and I have cleaned my bus bars and checked the voltage on every cell. However, certain places ALWAYS cause my stored battery charge to drop drastically untill I get away from the offending house or apartment building. I know that static magnetic fields cannot affect my electronics, but here in Fort Worth we have giant Lockheed and many people in the neighborhood are current and former Lockheed employees. Now none of that probably means anything to the majority of you on this site, but because of my physics background (I have a BS in physics) and the fact that RF jammers for my keyfob pop up frequently in this area....and my car will suddenly not SEE my keyfob(with a new battery) but then proximity to something seems to be repetitious at the same places(like at my apartment) I have experienced some weird times when for example I'm driving on the highway with the cruise control on, I always keep my battery bars display on, and an expensive car came up fast behind me, my car went into the yellow triangle "check hybrid system mode" and kicked out of my cruise control. That time was last Saturday, my bars went down, came back up, I reset the system with an obd plug in and dr prius app, and it never did that before and has not done it again since Saturday except in the same locations locally that ALWAYS cause it!!!!!! I'm very suspicious that someone is providing RF jammers based on the type of jamming technology that F35 aircraft have. So, if any of you have any clues that strong RF can cause my hybrid battery to display low bars temporarily and my gen3 2011 prius to suddenly go into the check hybrid system mode....then please reply!!! My only other guesses about why my car is doing this is simply my old battery, my inverter coolant needs changing, something like the phantom electrical problems for the gen2 related to the health of the ECU and connector corrosion, or something else that just happens to be affected by my car sitting overnight and the NIMH is not holding charges well for very long. So far I have had successfully charged/discharged my battery to rejuvenate it, but this rapid charge dropping is still only happening in the same places in my area and only once recently at constant speed on the highway!!! Thanks for reading my post!
     
  2. ForestBeekeeper

    ForestBeekeeper Active Member

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    That is very interesting.

    I wonder if 'Faraday Fabric' would be of any use?

     
  3. PriusCamper

    PriusCamper Senior Member

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    The problem that you're pointing out is due to corrosion inside your battery ECU creating micro-shorts in the voltage sensor harness pins that make the ECU think your pack lost charge and it's just a malfunction, the battery pack is fine. This problem is common with older Gen2, but much more rare with Gen3, though now that Gen3 is getting older it's starting to happen more often.
     
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  4. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    From experience, the most common RF jammers I've dealt with in the automotive & remote lock/unlock context are....

    ...aftermarket LED lamps being dimmed or regulated via PWM circuits.

    My old Subaru would ignore remote lock commands if the dome light were on or doing its programmed fade-to-black a few seconds after I got out of the car. Worked fine after i reverted the dome light to an ordinary incandescent bulb.

    Have since seen the same in a few other peoples' cars.
     
  5. Tombukt2

    Tombukt2 Senior Member

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    Roll the twilight zone . Disco version.. great stuff . Yes I don't think I would want to really live in a town where there's lots of defense contractors Colorado Texas California places like that Arizona and at least not be anywhere near a lot of the upper echelon of the folks that work in those places and so on and so forth they like to play around with lots of crazy things I have been to some of these places and the people that work at these places yeah man they're all in You know they they do some funny things it's quite hysterical I've seen cars outfitted with jammers and various things that don't work as intended and jam-up things that aren't supposed to be and oh God it's a real fiasco many times. To get this kind of stuff working correctly is engineering. Implementing certain technologies etc. I guess that can start in one's garage but I imagine the mistakes made along the way You got thousands of people in the town or city doing stuff like this. Like the Twilight zone.
     
  6. Grit

    Grit Senior Member

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    No way!!! Id like the conspiracy explanations from the og post rather than an technical ecu answer!
     
  7. Brian1954

    Brian1954 Senior Member

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    Instead of resetting (clearing) the system (trouble codes), read what the trouble code is that was triggered by the ECU and post it in this tread. Knowing what the trouble code is saying will help you determine what is wrong with your Prius. It probably is about the HV battery.

    Posted via the PriusChat mobile app.
     
  8. Michael Kent Handy

    Michael Kent Handy Junior Member

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    Well the code is the p080 check hybrid system, but you are right that its the battery health. Since I posted the comment I checked at Toyota to see if the software update was applied and it was. I got the license(11.99) to use the dr prius battery life test(19% left). I've since run the regeneration cycles again and more charge is holding. I still have a drop after restarting after hours of sitting and that's easy to hold off the p080 code by using regenerative braking to repeatedly move slightly then come to a stop. Thanks for posting the shielding fabric! I still have no idea why this happened on the highway except I like the other comments about the affect of led lights RF on electronic controls! I still could benefit from changing my inverter coolant because it is the primary charging source for my hybrid battery. I'm hoping to delay replacing my battery until something better than lithium phosphate becomes available, but I keep seeing dates years away.....so probably just going to have to look for a good one from a wrecked prius!
     
  9. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    car-part.com shows several available from North Texas auto recyclers, most of them around $1,000.

    Personally I would not take one from anything older than a 2015, just too much chance of having to do it again soon.

    ...And preferably a 2015 that was only crashed last week so the battery hasn't had time to go stale on the shelf.
     
  10. Michael Kent Handy

    Michael Kent Handy Junior Member

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    Yes! Thank you and it's true that likely the 2010 thru 2015 are the same bolt in gen3 part. I only know of 1 wrecking yard that has a gen3 that I got a small part from, but it's been there for a while. It's possible that some of the yards have access to a recent part because they usually remove the engines, transmission, wheels and other parts that are easily sold. I will check the site you mentioned!
     
  11. Tombukt2

    Tombukt2 Senior Member

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    Why would you buy one from a junkyard now you got guys that are pretty good at this they'll build you a battery from two or three old ones and stuff and that seems to work better just buying one from a junkyard it could have been sitting there a minute so on and so forth could code the next day all of that this kid up here that doesn't in Greensboro charged me like 750. Did it bang up job the battery was clean the modules were clean there wasn't a speck of anything anywhere look good ran great then all of a sudden the battery was leaking to the frame p o a a six whatever. He came back a week later with another battery ready to go that he pre-tested for a week in the vehicle that he drives around changing batteries with exactly like mine 08 loaded Prius car been running great since now he'll blast that battery apart that he took see which one module is leaking through the screw or whatever is going on and that's that.
     
  12. Brian1954

    Brian1954 Senior Member

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    Can you please explain what you mean by "regeneration cycles"?

    The P080 that you listed is not a valid trouble code. Did you mean P0A80? If so, the description for that code is "Replace Hybrid Battery Pack". The code is triggered when there is too big of a difference in the voltages between the 14 battery blocks.

    What are the voltages for the 14 battery blocks as shown in the Dr. Prius app? It would be nice if you could post a screen shot of the voltages, but you can not do that until you have made more than 5 posts in this forum. Can you please post the highest and lowest voltage shown of the 14 battery blocks. Usually, one or more battery modules go bad.

    A Dr.Prius life expectancy test of 19% is very poor. It sounds like you need to get the HV battery repaired or replaced sooner rather than later.



    Posted via the PriusChat mobile app.
     
  13. Michael Kent Handy

    Michael Kent Handy Junior Member

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    Yes....it's the p0A80 code, but I don't get the red triangle....it's yellow and the message is "check hybrid system" However, I do have a charger and discharger that I bought from a link on the dr prius app....and, the 19% result from the app longevity test was before I ran another charge/discharge/recharge cycle. So, now it's holding more charge while I drive....it's just after it sits overnight that I have to get the regenerative braking system to build up the bars by a couple to stop it from throwing another p0A80 code. I've got a nexas obd device to drop the code when it pops up to give my car time to bring up the charge. I've talked to Matt at Texas hybrid in weatherford about gen3 rebuilt batteries....and he does not have them, and they are more than 1,300 from some places, so If I go that route it will be always better than any battery from LQK in Burleson(about 1,068 with no gurantee). I likely will make my current battery keep working until I can plan on a purchase of a new LiPho battery from a dr prius supported link in California. I've read that my current system will work well with the characteristics of that battery type. It's about 2,500 and I've seen comments from users about immediately getting great mpg(60)
     
  14. rjparker

    rjparker Tu Humilde Sirviente

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    just an fyi… the engine charges the hybrid battery most of the time, not just regen. In fact the forced charge you did as part of the dr Prius test is engine charging.

    The lifespan of the aftermarket cells is still a question. Two or three years at $2500 can’t come close to oem for the same price or hundreds less.
     
  15. Brian1954

    Brian1954 Senior Member

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    Hopefully, this 2011 Prius is not your only car, and you don't need to use it daily.

    It sounds like you purchased the Prolong system from Hybrid Automotive. The charging/discharging/charging will not help very much when you already have a bad module in the battery pack. All the modules are connected in series, so one bad module will have a big effect on the whole battery pack. If I were you, I would not travel very far from home with the car until the HV battery pack is repaired.

    Can you please post a screenshot from the Dr.Prius app showing the voltages of the 14 battery blocks?


    Posted via the PriusChat mobile app.
     
  16. Michael Kent Handy

    Michael Kent Handy Junior Member

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    I tested all the modules in the pack with a meter and a 12 volt bulb for a load. All of the modules have the correct reading, so none of them have failed. And to the other post on the life of the LiFeP04 battery....it's been reported that it's life should be over 10 years. All of the comments in another thread were very positive even for results with much older Prius models even.
     
  17. Michael Kent Handy

    Michael Kent Handy Junior Member

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    I tested all the modules in the pack with a meter and a 12 volt bulb for a load. All of the modules have the correct reading, so none of them have failed. And to the other post on the life of the LiFeP04 battery....it's been reported that it's life should be over 10 years. All of the comments in another thread were very positive even for results with much older Prius models even.
     
  18. rjparker

    rjparker Tu Humilde Sirviente

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    Thats what they said about the cylindrical NiMH cells but users are seeing them die quickly. The lithium has its problems trying to emulate NiMH and now has recent revisions. Effectively it’s lifespan testing has reset to zero. Realize several members have an interest in that business and several others were beneficiaries of beta trials.
     
  19. Michael Kent Handy

    Michael Kent Handy Junior Member

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    The technical threads about how the LiFeP04 battery fits well into the design of the charging program are well written and provide plenty of supporting information. The Nexcell team has provided updates as they are needed. The full reports I have read are extensive. A few customers have not seen improvement and there always are things like dirty intakes from oil blowby that is common for many Toyotas, and some may have a head gasket problem like mine had. Mine has over 200,000 and I'm still managing the original battery, I'm using Mobil 1 0W 40, bars/leaks 2 part oil additive, I have a leak at my oil pan gasket and oil pressure sending unit....which I'm going to fix by replacing the oil pressure sending part, and am planning on getting a LiFeP04 battery from LaVerne Ca in the near future. I'm expecting to see a 10mpg improvement and a lifespan for the V2 Nexcell battery of more than 10 years based on the reports from users experience. I'm not sure where you are getting your information.
     
  20. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    It might make for great reading, but when the time comes for our car I'm pretty certain I'll be happy to read the boring Toyota warranty card that comes with their genuine replacement pack.
     
  21. rjparker

    rjparker Tu Humilde Sirviente

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    I like the idea of increased mpg with a lithium upgrade but not if it just lasts two or three years. The first buyers are now faced with upgrading their adapter boards after undisclosed issues were addressed. Its a matter of choice perhaps, uncertain reliability for hoped for improvements. By the time my second OEM battery wears out (and they do wear out) the car will have twenty years and maybe 500,000 miles on it without battery teardowns for modules or adapter boards.