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01-29-2021, 10:27 AM | #1 |
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Increased battery discharge after CIC SSD upgrade?
Hey all,
Just curious if anybody else has seen this. I did a SSD upgrade on my CIC I drive a few months back. Immediately the next day I got a increased battery discharge warning from the car. Figuring it was probably just unhappy about battery load while I was working on it, I ignored it. It now comes back every month or so. Never had it before the upgrade, and I replaced my battery as well. Got it again yesterday for the first time since replacing the battery. I'm suspecting there might be some issue with the cic unit putting what was the HDD to sleep, and it can draw too much power from the SSD while the car is off. Just curious if anybody else had something similar going on? |
01-29-2021, 11:25 AM | #2 |
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ISTA D can run the power diagnostic to see what module is drawing power when the car is in the low power state. If your CIC shows up as the offender then yes, it could be an issue that the unit doesn't know how to power down the SSD properly.
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01-29-2021, 01:28 PM | #4 | |
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If you don't have access to the software something like this might help: https://www.m3post.com/forums/showthread.php?t=1183365 In this case though, if the correlation is tied to you modifying the hardware there's a good chance that's the result. One option is to just return the CIC to stock and see if it persists after fully charging the battery.
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01-29-2021, 04:52 PM | #5 |
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Is the ssd drive a higher capacity drive than the oem one? If that's the case, I would be willing to bet that that's the culprit for increased battery discharge as higher capacity drives require more power and the oem system wasn't designed to accommodate higher capacity drives.
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01-29-2021, 06:31 PM | #6 | |
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SSDs in general use less power in part because they don't have any moving parts. Don't have to waste power on a motor or moving heads around. The reality of my situation is I am using a IDE to msata adapter for my SSD, which is obviously msata. Something about the combo of parts might be screwing up sleep mode. I'm trying to get ista D so I can take a closer look. |
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01-29-2021, 08:53 PM | #7 | ||
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My main point is that the e9x platform and its electronics are now over a decade old, which might as well be equivalent to dinosaurs roaming the earth in terms of technology. When you upgrade a component on a pc, the OS—and to some degree hardware—are designed for component upgrades/changes in mind. The OS/hardware vendors provide drivers/updates. What you are doing is an upgrade to a component for which the manufacturer never considered anyone doing and configured the proprietary software for specific tolerances based on the components of that time. Unless there is a way to modify these tolerances, I am not sure if this will be a straightforward plug and play upgrade. I am in no way discouraging this effort rather would like to see it succeed. So, good luck and mod on
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01-30-2021, 07:06 PM | #9 |
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cool, didn't know that was a thing.
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02-20-2021, 11:42 AM | #10 | |
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02-20-2021, 07:50 PM | #11 | ||
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The other cables are needed if you move to the F series or later.
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02-24-2021, 10:07 PM | #12 |
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Might as well get a BimmerGeeks Cable if you plan to do more fun stuff. Their cable has the updated firmware that fixes the ability to update DMEs.
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04-17-2021, 09:50 PM | #13 |
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To close the loop on this, it was not the SSD.
Finally tracked it down to something simple, an old battery (10 years old). I had asked for it to be replaced last November when I had some other work done, and I guess it got missed. The discharge message is simply the voltage of the battery getting too low, and the car trying to save itself. The problems just happen to start when I did the SSD upgrade. I did a current measurement, and found the car was going to sleep without issue. It sent me through a loop, because I was assuming the battery had been replaced, and the discharge had to be a parasitic draw. Moral of the story- confirm with data. |
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