01-11-2021, 04:27 PM | #1 |
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Emergency call battery fault. DIY?
Hi
It seems my new to me G31 has popped up with the emergency call failure error. Error codes show that the TCB battery is end of life. Being a touring and being the TCB is under the headlining, can I easily get to the battery to replace it myself? ISTA shows a whole headlining removal which With all associated work is not something I’m willing to do. I could code it out if I had to, but would rather fix it if i can. Is it possible? Thanks |
01-13-2021, 10:51 AM | #2 |
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01-13-2021, 10:53 AM | #3 | |
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01-13-2021, 01:15 PM | #4 |
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01-14-2021, 02:13 AM | #5 |
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Yea I have a G31. So there is no way round having to take the headliner out? That’s so much work for such a small part!
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01-14-2021, 04:56 AM | #6 | |
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What tool are you using to read the errorcode? I have a bluetooth OBD reader that I'm using with Bimmercode, and OBD doctor but it doesn't show any errors? |
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01-14-2021, 05:23 AM | #7 |
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Bimmercode won't show it, you need to use their sister app bimmerlink. I'ver used both bimmerlink and ISTA and the error appears on both
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01-14-2021, 09:01 AM | #9 |
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How old are your cars? Just wondering when mine will fail. Hopefully before the warranty ends (3 years from new).
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01-14-2021, 11:22 AM | #10 |
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01-15-2021, 04:49 AM | #12 |
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02-12-2021, 03:46 AM | #13 |
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02-12-2021, 02:11 PM | #14 |
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Yes, on my models you have to remove the headliner
Here is how to do it https://www.newtis.info/tisv2/a/en/g...one/1VnbkMkJdi |
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02-12-2021, 02:24 PM | #15 | |
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02-13-2021, 06:07 AM | #16 | |
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Completely apart to 2 hours. Then i ordered a battery (there are more battery variants, therefore you need to look at the battery in the TCU module). Reassembly 2hours. Then delete error via ISTA-D All done on Wednesday afternoon. |
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11-23-2022, 02:39 PM | #17 |
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Sorry to resurrect an old thread, I have a 2018 G31 and the error code has just popped up so I’m guessing it could be the battery issue.
Does anybody know of any instructions now that newtis has been closed? Removing the headlining is not a job I want to do, let alone twice to get a part number, but I can imagine it being very costly from a dealer. |
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11-23-2022, 03:21 PM | #18 | |
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From there, theres a white unit which is the tcu and you see a little notch for a small door. Just take a flathead, push the notch and the battery and door will open up. Replace it and thats all. Its really simple, took like 5 mins. |
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11-23-2022, 04:49 PM | #19 | |
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12-02-2022, 05:39 AM | #20 |
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I have the same problem - 3 months out of warranty and my G31 is showing the call system failure. It's ridiculous that a "regular" replacement item is located so badly (mine has failed after 3.25 years), and BMW want ~£1000 to replace it!
Any help on removing the headlining would be appreciated. |
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12-05-2022, 11:20 AM | #21 |
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I've got the same issue on a late 2017 G31. It's extra annoying because whilst the message is there you can't see the odometer or MPG.
Not sure if it makes any difference but I have the double sunroof. Does anyone have any more info to assist? Can't find much out there? |
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