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      02-08-2019, 06:22 PM   #155
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No info available on its battery life, anyone?
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      02-09-2019, 12:06 AM   #156
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No info available on its battery life, anyone?
do you leave it plugged in even after it may be fully charged?
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      02-09-2019, 03:22 PM   #157
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do you leave it plugged in even after it may be fully charged?
I charge it wirelessly, so it stops charging by itself when full. Could of course be that its ability to detect its charge level is inaccurate.


Anyone else charge theirs wirelessly?
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      02-09-2019, 03:30 PM   #158
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Quote:
Originally Posted by 416tt View Post
do you leave it plugged in even after it may be fully charged?
I charge it wirelessly, so it stops charging by itself when full. Could of course be that its ability to detect its charge level is inaccurate.


Anyone else charge theirs wirelessly?
ah i see.. I use the plug! mine seems to last quite a long time as well!

I don't think it would hurt to complain to your dealer about it? perhaps they can reset it?

did you vehicle come with it? I had to purchase mine separately. I wonder if there are settings which keep an active sync or sync when you turn the display on?

I haven't really played around with mine but I will check it out.
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      02-09-2019, 04:29 PM   #159
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I did complain to my dealer, and they said it should last "up to 3 weeks". Which is a meaningless statement

Mine was a retrofit, by the dealer.

My suspicion is that its the wireless charging i.e. the key stops before its full, even though the display shows it to be full. I suspect the (key) battery remaining virtual gauge is inaccurate.
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      02-12-2019, 02:34 AM   #160
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Have anyone successfully retrofitted a key to a 2014 model? Seems like there are some for sale on Ebay tighter with a new receiver. Anyone know something about it?
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      02-12-2019, 01:21 PM   #161
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I'm not expert, but you may have a challenge getting any key sourced from EBay to work on your car as it needs to be coded to your vehicle.
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      02-13-2019, 12:50 AM   #162
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Quote:
Originally Posted by JasH View Post
I did complain to my dealer, and they said it should last "up to 3 weeks". Which is a meaningless statement

Mine was a retrofit, by the dealer.

My suspicion is that its the wireless charging i.e. the key stops before its full, even though the display shows it to be full. I suspect the (key) battery remaining virtual gauge is inaccurate.
does anyone know of a reset method? I mean im sure you have already thought about this but I was thinking maybe drain the battery fully and charge with a cable to full and see if you notice a difference?

and if there is some sort of soft reset or gard reset method anyone else knows of that would great !
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      02-13-2019, 04:28 PM   #163
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I'm currently doing a daily test and log of its battery drain (unused) from 100% wireless charge. I will repeat that from a wired charge after it reaches "zero".


"Zero" being where the display does not work. The key still holds reserve to work the locks and ignition at that point of course.
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      03-15-2019, 02:48 PM   #164
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Post Data log & conclusions

Daily LOG with notes. With Key unused, and simply checked daily using an Alexa daily reminder at 9pm.

Conclusions are:

1/ Key battery life is rather short at 16 days.
2/ Battery indicator is faulty, as the battery was depleted virtually as soon as it indicated 50% life remaining.
3/ Battery indicator is not fit for purpose.

Outcome:
BMW replaced my DisplayKey today under warranty (but new key is not fully working yet, as it has less info and will not pre-condition i8)




DisplayKey LOG:

Wirelessly charged 100% 10 Feb 2019, 18:29. Display indicates full battery.

12 Feb, 21:14. Full battery
13 Feb, 21:00. Full battery
14 Feb 21:00. Approx 90%
15 Feb 21:24. Approx 90%
16 Feb 21:00. Approx 90%
17 Feb 21:00. Approx 90%
18 Feb 21:00. Approx 80% - hard to be sure, could be unchanged at 90%
20 Feb 21:00. Approx 80%
21 Feb 21:00. Approx 80%
23 Feb 15:42. Approx 80% - hard to be sure, this and above ones could be 75%
23 Feb 21:00. Approx 75% - as above, could be 80%
24 Feb 21:00. Approx 75%
25 Feb 21:00. Approx 60%
26 Feb 21:00. Approx 60%
27 Feb 21:00. Approx 50% - but Key “crashing” and shutting down. This is the usual first sign of v low battery. Screen therefore effectively unusable properly. Then tried to use it again, and key will not activate (display remains off).
Placed it on wireless charging pad & tried to activate & charge it. Screen shows charging symbol, but otherwise will not active (boot up).
Checked every 30 mins.
27 Feb 23:01. Shows 100% but is still charging. Key can now be used.
27 Feb 23:08, screen self-activated and the key completed charging.
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