gerryhsu38
Posts: 2
Joined: Sat Jul 29, 2017 5:55 am

Re: Battery Replacement Under Warranty

Mon Jul 29, 2019 9:09 am

I have 2014 BMW i3 REX 54k on the clock, currently kapa show 13.7 max, almost decrease 0.1 every week. i estimate withing 3 month should trigger warranty, any one can share battery warranty experience?

i3Houston
Posts: 232
Joined: Thu Jul 12, 2018 2:30 pm

Re: Battery Replacement Under Warranty

Mon Jul 29, 2019 2:55 pm

Watching this thread.

2015 i3 Rex Range is ~45 miles, 90% freeway ~65MPH, AC set to 70F, Comfort Mode.

I think last year, I used to get ~50 miles range.
TM3 Reservation holder/ 2015 i3 Rex

User avatar
MKH
Gold Member
Posts: 645
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Battery Replacement Under Warranty

Thu Aug 01, 2019 4:54 am

An odd factoid. On another board several i3 owners experiencing noticeable range degradation said that after replacing their (aging) 12v battery and registering the new one, their range went back to near normal. One of the owners this happened to mentioned that when their Dealer was apprised, was told was some sort of GOM/ECU software glitch. :o
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

i3Houston
Posts: 232
Joined: Thu Jul 12, 2018 2:30 pm

Re: Battery Replacement Under Warranty

Thu Aug 01, 2019 7:00 am

MKH wrote:
Thu Aug 01, 2019 4:54 am
An odd factoid. On another board several i3 owners experiencing noticeable range degradation said that after replacing their (aging) 12v battery and registering the new one, their range went back to near normal. One of the owners this happened to mentioned that when their Dealer was apprised, was told was some sort of GOM/ECU software glitch. :o
Good to know that! I had 12v battery was replaced recently so one less thing in the equation for me!
TM3 Reservation holder/ 2015 i3 Rex

XERT
Posts: 8
Joined: Mon Jul 30, 2018 5:41 pm

Re: Battery Replacement Under Warranty

Thu Aug 22, 2019 1:09 pm

YES, YES, and YES they will...As We Just found out today that our local BMW dealership is going to replace all eight battery cells. Not seen much chatter about them stepping up to the plate and replacing them under warranty, in other prior posts and my research I have found that BMW has done everything to try and avoid this expense. To our surprise, we became one of the lucky few. It was unexpected as we had our air conditioning compressor fail last week (our course we are out of our factory warranty) the new compressor cost us almost $3,000 to replace. Unfortunately, we had to bring it back to the dealership the next day because the A/C had cut out again. They performed a battery capacity procedure (takes 24 hours) and when the result came back, they texted me this, "Based on the results of the capacity test I went forward with a request to the BMW electric mobility team for a High Voltage Battery overhaul They have agreed with my assessment and approved my recommendations. All 8 cell modules will be replaced inside the HV battery pack under the battery warranty coverage. I am currently in the process of getting all the needed parts for the repair ordered. Once I know the availability I can provide a better time frame of when the repair may be completed." There is hope for all 2014 owners. And yes BMW does indeed honor that 8/100,000 battery replacement program.
2014 i3 REX Tera world, 20" rims, Iconic Silver, DC fast charge, Juice Box Pro Level 2, 2nd owner Not coded YET.

i3Houston
Posts: 232
Joined: Thu Jul 12, 2018 2:30 pm

Re: Battery Replacement Under Warranty

Thu Aug 22, 2019 1:49 pm

Wow this is the first I am hearing! Sorry to hear about the compressor.
TM3 Reservation holder/ 2015 i3 Rex

lopezjm2001
Posts: 13
Joined: Tue Aug 07, 2018 3:02 am

Re: Battery Replacement Under Warranty

Thu Aug 22, 2019 3:51 pm

I read about BMW i3 AC compressor failures on the 2014/15 models on almost a daily basis sadly on the Facebook page - BMW i3 Worldwide Group. If caught early the replacement is cheap, if not the metal bits from the AC comoressor can go through the whole system which then becomes even more expensive. It can also affect the batteries life as the AC compressor is also used to cool down the HV battery. You are one of the lucky ones.

i3Houston
Posts: 232
Joined: Thu Jul 12, 2018 2:30 pm

Re: Battery Replacement Under Warranty

Thu Aug 22, 2019 7:35 pm

I feel incredibly lucky for sure... Having ac compressor, 12v battery and media control console replaced under warranty in literally last few months of outstanding warranty.
TM3 Reservation holder/ 2015 i3 Rex

Rmns116
Posts: 1
Joined: Fri Aug 23, 2019 2:23 pm

Re: Battery Replacement Under Warranty

Fri Aug 23, 2019 2:29 pm

Newbie here. Purchased a 2014 i3 Rex a couple of months ago. Been reading all the battery kappa stuff and had noticed that my range decreased when sitting at the office. I checked my Kappa yesterday and today. Came in at 13.3 and 13.4. I live in Houston and until the last few days it’s been 100+ with high humidity (great for the skin). I’m not super concerned about getting this checked out but at the same time I wonder if this is normal or if I will maybe qualify for a replacement. Any advise?

opossum
Posts: 5
Joined: Sat Dec 14, 2019 7:21 am

Re: Battery Replacement Under Warranty

Sat Dec 14, 2019 8:24 pm

Well, it looks like we are really close to a battery warranty claim. I'm curious if anyone has any thoughts on our situation.

2014 model. I believe it was originally purchased in February 2015, based on when our various warranties expire.
We purchased the car as a certified pre-owned vehicle in October 2017 (at 37,000 miles).
Now, in December 2019, it has 60,000 miles.

According to BMW's own test this month, we are at 72% of the original capacity, which puts us just 2% away from the warranty threshold. Our real world range and kappa values agree with this.

We live in Phoenix and already went through this heat accelerated battery degradation fiasco with the first model year Nissan Leaf (2011). With the i3's active thermal management, we expected much better results this time around! I know a few local Fiat owners who have seen far less battery degradation with comparable miles and these same battery cells. I fired off an email to our service manager to open a discussion about whether we should be scheduling a follow-up battery test for the spring of 2020 or whether there are any other things to consider, but have yet to hear back. We lost 28% of our capacity in roughly 60% of the warranty period, so clearly we'll be well below the warranty threshold well before the end of the warranty period.

I don't see a way to upload my Excel plot of our recent max kappa values, but here's the data. If you plot this, you'll see the value is dropping quite quickly! The other odd thing you'll see is that after we got the car back (they did a software update and battery test), the max kappa value mysteriously increased from 13.7 to 14.9 and we are seeing a slight increase in range. Did they just 'give' us a sliver of the reserved battery capacity to delay a warranty claim? It has been over a week since we got the car back from the dealer and we still see roughly 10 miles more usable range, though it is still far short of what it once was.

Date Capacity Kappa Miles
6/14/19 77% 14.5 55147
7/30/19 76% 14.3 55937
8/29/19 75% 14.1 56761
9/18/19 75% 14.1 57256
9/29/19 74% 14.0 57609
10/28/19 73% 13.8 58570
11/27/19 73% 13.7 59653
12/5/19 79% 14.9 59819

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