Dead 04 Prius

Discussion in 'Gen 2 Prius Main Forum' started by DarrylC04, Sep 17, 2020.

  1. DarrylC04

    DarrylC04 New Member

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    I have a Prius Red With 369,610 Miles So The Prius sat from May 9th To September 14th so 4 months. I when to start up my Prius and nothing dead. I got theses after the jump start but after I got the codes the car died again. They tried testing the hybrid fan in the back near the hybrid battery with techstream and it said failed to test or could not perform test. The 12V was at 9.00V ON And 9.51V OFF. What’s the next step I should be taking?

    P3000/123 BATTERY CONTROL SYSTEM MALFUNCTION

    P3011/123 BATTERY BLOCK ONE BECOMES WEAK

    P0A7F/123 HYBRID BATTERY PACK DETERIORATION

    P0A80/123 REPLACE HYBRID BATTERY PACK

    P0A84 HYBRID BATTERY PACK COOLING FAN 1 CONTROL CIRCUIT LOW

    C1259/58/150 HV SYSTEM REGENERATIVE MALFUNCTION

    C1310/51/156 MALFUNCTION IN HV SYSTEM

    C2123/23 NO SINGAL FROM FROM TRANSMITTER ID3 IN MAIN MODE

    C2124/24 NO SINGAL FROM FROM TRANSMITTER ID4 IN MAIN MODE

    C2176/76 RECEIVER ERROR

    C2318 LOW VOLTAGE ERROR (POWER SUPPLY MALFUNCTION)

    U0146/435 LOST COMMUNICATION WITH GATEWAY ”A”

    B1271 COMBINATION METER ECU COMMUNICATION STOP

    B1421 SOLAR SENSOR CIRCUIT (PASSENGER SIDE)

    Here is the battery voltage my mechanic gave me.

    V1 10.03

    V2 16.16

    V3 16.09

    V4 16.11

    V5 16.11

    V6 16.12

    V7 16.11

    V8 16.10

    V9 16.14

    V10 16.13

    V11 16.11

    V12 16.15

    V13 16.20

    V14 16.00
    9D896C58-B3F0-46D4-B86E-0B63D5E0CE1E.jpg 100EBFED-E31B-4E7D-B7CB-1B530F664155.jpg
     
    #1 DarrylC04, Sep 17, 2020
    Last edited: Sep 17, 2020
  2. dolj

    dolj Senior Member

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    At the very least you need a new 12 V battery. You have other issues more than likely, and you will be able to reliably diagnose those much easier with a healthy 12 V battery.

    If those 14 voltages are the block voltages of your HV battery, you need to replace block 1 (2 modules) with 2 modules that closely match the capacity of the other remaining 26 modules. Then charge and balance the whole battery and see where you are.
     
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  3. DarrylC04

    DarrylC04 New Member

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    I will change the 12V today. Yes they are my Voltages for my hv battery my mechanic gave them to me. Remember the 04 Prius sat for 4 months
     
  4. TMR-JWAP

    TMR-JWAP Senior Member

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    The 12V was at 9.00V ON And 9.51V OFF.

    Straight out of the gate, I'd hope your mechanic was all over the above information. That battery needs to be charged, not exceeding 4 amps if it's an original Toyota agm battery. If it's an aftermarket, charge rate will depend on battery style. The 12v battery provides power to boot up all the computers in the car. The Gen 2 Prius has 14+ ecus, so it's extremely important to have proper power on the 12v circuit. Computers don't work well if they don't have the proper power supply.

    The jump/boost allowed the computers to boot up, but unless you allow the car to sit in "Ready" condition for a day or so, it had no chance, whatsoever, to actually charge your 12v battery. Once you turn the car off, you're back to square one, with a dead car.

    Your HV battery has 28 individual 7.2v batteries (modules) inside. These are usually around 7.5-7.7 after sitting unused for a while. The ecu monitors them in groups of 2. Every group of 2 is called a block, so there are 14 blocks. The battery ecu has one sensor on each block to monitor the overall health of the battery. Each sensor registers the combined voltage of 2 modules. Block 1 is the two modules furthest away from the ecu.

    The info the mechanic got while the car had good power on the 12v circuit included-----V1 10.03 and all the others are in the 16v range.

    The 16v is telling you the HV battery was recently (or is currently) in a 'being charged' condition, because that's the only way you could ever have that high of a voltage if the car has been sitting for months.

    Every battery ever manufactured has some amount of self-discharge, which typically gets progressively higher as the battery ages and cycles. The 10.03v is telling you that one or both of the modules in Block 1 have self discharged or failed while the car was stored. (There is always the slim chance that a different problem is causing the low voltage reading.) The possibility does exist that you can fire the car up, force charge the HV battery, and it will recover Block 1 well enough to let you start driving again. Self discharge problems in individual modules can sometimes be overcome just by driving the car often, preventing the self discharge from being enough to trigger a code. Even if force charging works, at some point, it would be in your best interest to replace one or both modules in block 1.

    Think of your HV battery as having 28 water jugs, each with a different sized hole in the bottom. None of the jugs will go empty if you keep adding water to them faster than it's draining out. Driving the car every day, allowing it to charge the HV battery, is like adding that water, but eventually, one of the holes just becomes too big and it's time to replace that jug....
     
  5. DarrylC04

    DarrylC04 New Member

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    Thanks for the information but what about my combination meter and my tires and the cooling fan and my gateway ECu? What do I do about them? I don’t care about B1421 since most Prius have them when you’re in dark Areas.
     
    #5 DarrylC04, Sep 18, 2020
    Last edited: Sep 18, 2020
  6. PriusCamper

    PriusCamper Senior Member

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    After you charge or replace 12v... One of the two modules in block #1 has a self discharge issue/bad cell. If you lived near me I'd do a full charge & balance of the pack and see how many error codes go away after than and then replace the bad module and replace all the corroded hardware and then recondition the pack and you'd be good to go for anywhere from 3 months to 3 years.
     
  7. DarrylC04

    DarrylC04 New Member

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    Where do u live. Washington state?
     
  8. DarrylC04

    DarrylC04 New Member

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    I have changed the 12V battery 12.60V OFF 14.59V ON but the car won’t turn off still even with the 12v Disconnected.
     
    #8 DarrylC04, Sep 18, 2020
    Last edited: Sep 18, 2020
  9. PriusCamper

    PriusCamper Senior Member

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    Olympia
     
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  10. strawbrad

    strawbrad http://minnesotahybridbatteries.com

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    When the combination meter goes dark holding the power button down for three seconds will shut off the car. The fix is to replace the combination meter.

    The P0A84 battery fan codes is usually caused by a corroded white plastic wiring plug next to the battery fan. That plug can get wet from leaky hatch seals.
     
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  11. DarrylC04

    DarrylC04 New Member

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    I did press the button for 4 seconds and the car turned off. So next options where to get the hv battery and combination meter and cooling fan fix
     
  12. dolj

    dolj Senior Member

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    I would do those in reverse of that – cooling fan fix, combination meter, and HV battery. Retest the car after each fix.
     
  13. DarrylC04

    DarrylC04 New Member

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    I have a code scanner I bought about from autozone about two years ago.
     
  14. DarrylC04

    DarrylC04 New Member

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    So what are my options?
     
  15. DarrylC04

    DarrylC04 New Member

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  16. dolj

    dolj Senior Member

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    Matt at Texas Hybrid Batteries is well known here and recommended. He has a good deal, get in touch and he'll see you right. Your car is a 2004, so also look into upgrading to the 2006-2009 CM and to do this you will need to replace your light cluster with one Matt can supply you. This will fix the 299,999 miles max limitation that the 2004-2005 had.
     
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  17. DarrylC04

    DarrylC04 New Member

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    I’m going to get the combination meter fix first then get the my Hybrid battery and my cooling fan fix my mechanic will install the hybrid battery cooling and cm for me and afterwards how do I five C2123 C2124 And C2176 do i just need some new tires? And if the gets combination meter fix will that fix my gateway code I have? 500$ battery Hybrid $600 for cm cooling fan 130$ and tires $35 12v was $175 regenerative breaking will be $150 if needed gateway ecu will be 115$ if needed grand totaled will be $1,740 so really 1,565$ since 12v was replaced by him already without regenerative breaking and gateway ECu will be 1,475$ Or $1300 since 12v was replaced by him already with a 5 year warranty on the hybrid battery and a 3 year warranty on the 12v and 5 year warranty on the combination meter
     
    #17 DarrylC04, Sep 20, 2020
    Last edited: Sep 20, 2020
  18. TMR-JWAP

    TMR-JWAP Senior Member

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    Please review post #10. It is VERY RARE for a Gen 2 fan to fail. There is a wire harness plug clipped near the fan that has corrosion problems. I've seen it in EVERY Gen 2 I've worked on. I typically clip the wires and buttsplice them together and use heatshrink to insulate them. I do this free for every customer that purchases one of my batteries. The one in the photos below has pretty mild corrosion.

    Connector by fan 1.JPG Connector by fan 2.JPG
     
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