[tommyb13662]

2016 i8 36k miles No re-start issue: Codes

P1d37 current
P21a0 current
P21a1 current
P2354 current
P0b3c Current
P0b2c Pending
P1b41 pending
P1bdc pending
P1e51 pending

Car still has warrant until 5/2024 or 100k. However I want to start learning about the hybrid system so i can repair it as i intend to keep this car permanently.

Drove the car the night before. parked no issues. Next day would not start. Dash said dont turn off car restart not possible. honestly hoping is an issue with the hybrid battery since have noticed that the E only range recently has been crap even after a 100% charge from the wall.

[tommyb13662]

Hello,

So Im at BMW JACKSONVILLE today. First they tried to claim it was a 12v battery issue. I said no... only reason 12v battery is dead was because we were trying to diagnose it. And so without the high voltage battery supplying the 12v of course the 12v was drained... wouldnt diagnose it until they replaced the 12v battery... So they did and now they are finally diagnosing the real issue 🙄. Will keep you updated.

[fbuzila]

Originally Posted by tommyb13662

Hello,

So Im at BMW JACKSONVILLE today. First they tried to claim it was a 12v battery issue. I said no... only reason 12v battery is dead was because we were trying to diagnose it. And so without the high voltage battery supplying the 12v of course the 12v was drained... wouldnt diagnose it until they replaced the 12v battery... So they did and now they are finally diagnosing the real issue 🙄. Will keep you updated.

I just took my i8 from there (Tom Bush Jax) after 2 months…in my case they replaced half of main batteries…

[tommyb13662]

Update:

Now that the first tech determined that the 12v battery ISN'T the fault... There is a new tech in charge. He is their electrical "Specialist". He says according to the voltagesp/readings on their system all the cells currently look like they need replacement. He thinks there was an issue that may have fried all the control modules and overcharged the cells. Half were overcharged into the "dead" zone that they are supposed to never charge past. Other half are drained into the dead zone they are never supposed to be discharged past.
They still want me to buy a 12v battery... supposed dead cell...

[fbuzila]

Originally Posted by tommyb13662

Update:

Now that the first tech determined that the 12v battery ISN'T the fault... There is a new tech in charge. He is their electrical "Specialist". He says according to the voltagesp/readings on their system all the cells currently look like they need replacement. He thinks there was an issue that may have fried all the control modules and overcharged the cells. Half were overcharged into the "dead" zone that they are supposed to never charge past. Other half are drained into the dead zone they are never supposed to be discharged past.
They still want me to buy a 12v battery... supposed dead cell...

Make sure they order all the parts they need to replace the batteries; in my case they forgot some connectors and lost another 3 weeks…

[tommyb13662]

What year/miles is yours?

[tommyb13662]

I suspect part of the issue with mine was its 2016. Bought last year with under 20k miles. Sat long time dead previous owner kept as garage queen never drove it. Then would randomly charge it and go for a drive again leave it dead for a while.

[fbuzila]

Originally Posted by tommyb13662

What year/miles is yours?

2019, 10k miles, roadster

[tommyb13662]

Lol i really wanted an older style with the hood vent. Just personal preference/ style. But also really wanted the larger battery better electric range. So hopefully aftrr these repairs ill get the complete car I wanted. Now ill just have it painted the burnt copper color an it will be 100% what i wanted.

[tommyb13662]

Update:

I was told today that the HV battery and associated systems would not be covered under ANY warranty (BMW or my extended) as "there is suspicion of engine tuning" I am beyond pissed.

[fbuzila]

Originally Posted by tommyb13662

Update:

I was told today that the HV battery and associated systems would not be covered under ANY warranty (BMW or my extended) as "there is suspicion of engine tuning" I am beyond pissed.

wow…do they have any proof? was the car tuned?

[tommyb13662]

I yelled and threatened legal action for quite some time. They finally said that it has been forwarded to BMW NA. There is a code S0777 on the ECU. An entirely different controller than the battery and HV system. Meaning tuned or not it has ZERO correlation to the current issue at hand. But due to hurricane i will not hear back from the dealership until friday at the very earliest. Most likely not until monday/tuesday. Oh they also wanted to make a claim that because I coded in a new 12v battery since the HV system was not charging the 12v system. I had "significantly tampered" with the design and opperation of the system.

[tommyb13662]

I am beyond annoyed with bmw at this point. NOTHING has been done to the car. Got a call today that they cant continue diagnostics until the 12v battery is replaced. Because it has to be submitted to some tssro system. $550 for battery, 200$ labor. Then they will clear the codes with the new 12v battery. And finally submit my results to their bmw system. Basically because the hv system died it killed ther tiny 12v battery. And they wont accept any battery besides the one they sell at the shop. Not even a bmw battery. Yet last week was told they would be replacing the hv batteries... so im entirely pissed that they accomplished nothing in a week and a half.p

[tommyb13662]

They explained the issue slightly better. The BMW repair guys in the shop are simply parts replacers. They read the codes send it to bmw engineers, Who then tell the shop guys what to replace. So with the 12v battery dead killed by the hv system not charging it. There were a ton of codes for 12v system too. Bmw would not do anything until they removed the codes for 12v system. So now that they charged me $800 after tax they will continue on with the repair. But according to bmw the HV batteries should be replaced under warranty now. 🤷 im just livid that they refused my brand new bmw battery forced me to buy another... and that it took a week and a half to get the 12v battery replaced so bmw would actually do diagnostics on the car 😡🤬🤬🤬🤬😡

[tommyb13662]

Update: BMW jax just called.. A battery safety module is fried. Apparently it is also covered with the batteries for the extended bmw battery warranty. Bad news both batteries and module are backordered...

Side note BMW USA is considering replacing my 12v battery as the death of the HV system killed the 12v system battery. But they had to place an escalation ticket in for this to be approved. I was told NOT to get my hopes up.

[ChiTownM]

Originally Posted by tommyb13662

Update: BMW jax just called.. A battery safety module is fried. Apparently it is also covered with the batteries for the extended bmw battery warranty. Bad news both batteries and module are backordered...

Side note BMW USA is considering replacing my 12v battery as the death of the HV system killed the 12v system battery. But they had to place an escalation ticket in for this to be approved. I was told NOT to get my hopes up.

Thank you for the detailed updates, sorry to hear. Good news you will have brand new EV functionality, not a bad outcome.

In regards to the 12V battery, keep pushing for it via your dealer, since they are the ones that can influence that decision. I tend to say no to me paying for stuff and politely asking them to continue escalating it.

Good luck

[tommyb13662]

Well turns out the 12v battery was replaced on 10/19/2020. Means bmw 2 year warranty would not expire until later this month anyway. I brought the car in well before that anyway. So here I shelled out almost 800$ and they wasted over a week and a half of my time for something that needed to be warrantied anyway. Pisses me off.

[tommyb13662]

Update:

BMW USA has declined to warranty the 12v battery even though it is obviously under warranty. They claim that my removing the battery to charge it since the HV system died is enough cause to void the warranty on the battery... what a load of BS. Im tempted to seek legal action. Its a waste of time probably. But im pissed enough to become a thorn in their side. If I didnt like the car that much I would consider dumping it after repairs are made...

[Ed.pabich@gmail.com]

5 out of 6 HV batteries were shot on my 2017 i8 with less than 15k miles. It took 4 months and 3 weeks to get the parts! It was covered under warranty, but that is too long. If BMW wants to expand into EV, they need to get their act together. Sounds like more and more i8's with HV battery problems. Hope you have better luck.

[tommyb13662]

The HV batteries are covered under warranty. My issue is they force you to replace the 12v battery. The hv system lets it die so you are have to let them replace it before they will do any work on the car. Even though my 12v battery is less than 2 years old i have the paperwork for a battery replacement done already they refuse to warranty the 12v battery.

[tommyb13662]

Originally Posted by fbuzila

2019, 10k miles, roadster

How long did it take for them to get your batteries? Im told they are still on back order. The car has been at bmw since 9/22/22. 2+ months now still sitting waiting for batteries. Ugg This is the 3rd time the i8 has been stuck for repairs months on end. Havnt even owned it 3 years yet :-/

[fbuzila]

Originally Posted by tommyb13662

How long did it take for them to get your batteries? Im told they are still on back order. The car has been at bmw since 9/22/22. 2+ months now still sitting waiting for batteries. Ugg This is the 3rd time the i8 has been stuck for repairs months on end. Havnt even owned it 3 years yet :-/

Almost 2 month…mainly because they messed up and didn’t order all the parts they needed first time.