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Thread: Capacity and health data on high voltage batteries in VAG EVs and Plugin Hybrids?

  1. #1
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    Question Capacity and health data on high voltage batteries in VAG EVs and Plugin Hybrids?

    A relative of mine has a Euro mk7 Golf GTE plugin Hybrid. He feels that his EV range has decreased noticeably since the car was new.

    I did connect to it with VCDS and quickly browsed through Meas Values, but did not find any apparent values at that time. Does anyone here know where to find health and usage data on high voltage batteries?

    Afterwards I did some google searching, and read that there should be values called:
    Param_SOHP
    Param_SOHQ
    (and a value in nn%).

    I also found this:
    Function call-up: sys x 1 0413 11 Start Stopp Kapitel 6 MQB 00011

    Test step: Supply

    Test step: Vehicle selection

    Test step: Battery monitoring measured values

    /Param_MatchRecorDataIdent 12 05
    /Param_RecorDataIdent EM_prcSoh
    /Param_DataRecor/Param_SOHP 89.0%
    Is this some kind of VAS/ODIS procedure?
    Can this be done in VCDS?

    It would be interesting to know procedures to do this on all VAG EVs and plugin-hybrids:
    Golf GTE, Passat GTE, e-Golf, Audi A3 e-tron, Audi Q7 e-tron.

    I may also obtain access to the new Audi e-tron EV SUV soon, it would be interesting to look into the real battery specs there as well (in addition to a controller map/full scan perhaps?).

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    Benevolent Dictator Uwe's Avatar
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    Andy drives a 2018 A3 e-tron. We've got complete maps from it. I'm not seeing anything that correlates directly with what you've got there, nor anything that's obviously related to battery health. However, there's a boatload of "History Data" available. Since he's had the car a bit more that year now and has driven it primarily on electric power, I suppose it would make sense to pull a fresh set of maps. He has observed that temperature has a strong influence on electric-only range and efficiency (miles per kWh).

    A scan and maps from the new Audi e-tron pure EV would be greatly appreciated.

    -Uwe-
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    VCDS Distributor NEtech's Avatar
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    You can use search in measurement data and search for: SOH
    in [19-CAN Gateway].

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    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by NEtech View Post
    You can use search in measurement data and search for: SOH
    in [19-CAN Gateway].
    Hmm.. I was looking for it in the battery itself (address 8C). But yes, the Gateway has:

    ENG106155-ENG118436 -- EM_prcSoh - SOH_P
    ENG106155-ENG118435 -- EM_prcSoh - SOH_Q

    -Uwe-
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    Administrator Andy's Avatar
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    I just ran out and checked my 2018 A3 e-tron which has 15969km or 9922miles on the odometer:

    ENG106155-ENG118436 EM_prcSoh-SOH_P 96 %
    ENG106155-ENG118435 EM_prcSoh-SOH_Q 95 %

    Interestingly, I ran maps in July 2018 (when the car had 7054km / 4383mi) and it showed:

    ENG106155-ENG118436,EM_prcSoh-SOH_P,100, %
    ENG106155-ENG118435,EM_prcSoh-SOH_Q,100, %
    Last edited by Andy; 01-08-2019 at 09:18 AM. Reason: more data

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    Thanks,

    I will look for SOH values in the Gateway.

    Quote Originally Posted by Uwe View Post
    A scan and maps from the new Audi e-tron pure EV would be greatly appreciated.
    What is the optimal procedure for doing that?

    I saw this thread:
    https://forums.ross-tech.com/showthr...st-long-coding
    And this page:
    http://wiki.ross-tech.com/wiki/index...ol_Module_Maps

    Is this the best way? - Do an Auto-Scan with Debug Level set to 2 in the options?

    Does it create both pre label files and (human readable) CSV files for all modules?
    I want to study/review data after I no longer have access to the car as well.

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    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by bjornb View Post
    Is this the best way? - Do an Auto-Scan with Debug Level set to 2 in the options?
    Yes.

    Quote Originally Posted by bjornb View Post
    Does it create both pre label files and (human readable) CSV files for all modules?
    I want to study/review data after I no longer have access to the car as well.
    On a car that's all UDS, and I'm quite confident this one will be all UDS, pre-label files are not terribly useful, so it should all be CSVs.

    -Uwe-
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    Quote Originally Posted by Uwe View Post
    However, there's a boatload of "History Data" available
    Where and how can I see this history data?

    Related to this?
    https://forums.ross-tech.com/showthr...y-History-Data

  12. #9
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by bjornb View Post
    Where and how can I see this history data?
    Make a measuring values map of your 8C module; you should see it in there.

    Quote Originally Posted by bjornb View Post
    I would suppose it is conceptually similar, but I'm not at all sure anyone has made an "interpreter" for it yet.

    -Uwe-
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  13. #10
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    I retrieved data from a neighbours e-golf (2015, 68k km), found this in the gateway:
    ENG106155-ENG118436 EM_prcSoh-SOH_P 91 %
    ENG106155-ENG118435 EM_prcSoh-SOH_Q 89 %

    EDIT: I also found this:
    IDE09074-MAS08256,Vehicle properties-Max energy content,18850, Wh
    Last edited by bjornb; 01-10-2019 at 07:37 AM.

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