shelton
Posts: 5
Joined: Tue Sep 08, 2020 10:41 am

Re: Electrical system failure: Stop!

Fri Sep 11, 2020 8:46 pm

Just got a call that my car is ready. All I know so far is that my battery was “defective” and they replaced it under warranty. The person on the phone didn’t know much more, will ask for more details when I pick it up tomorrow.

f1geek
Posts: 876
Joined: Fri Jan 23, 2015 1:18 pm
Location: SF Bay Area

Re: Electrical system failure: Stop!

Fri Sep 11, 2020 10:08 pm

Defective 12 V battery? Was it a Varta?
2017 e-Golf LE, Multi Coat White with Black Vegan Leather interior

somethingcool
Posts: 28
Joined: Mon Jun 01, 2020 4:40 pm

Re: Electrical system failure: Stop!

Mon Sep 14, 2020 3:41 pm

Must have been the 12v, no way they replaced the HV battery in 3 days.

shelton
Posts: 5
Joined: Tue Sep 08, 2020 10:41 am

Re: Electrical system failure: Stop!

Mon Sep 14, 2020 5:16 pm

Just picked it up (was delayed due to the fires) and it was indeed the 12V they replaced. One cell inside was defective, he said.

f1geek
Posts: 876
Joined: Fri Jan 23, 2015 1:18 pm
Location: SF Bay Area

Re: Electrical system failure: Stop!

Mon Sep 14, 2020 7:31 pm

What was the brand of the defective 12 V battery? New 12 V battery? thanks!
2017 e-Golf LE, Multi Coat White with Black Vegan Leather interior

shelton
Posts: 5
Joined: Tue Sep 08, 2020 10:41 am

Re: Electrical system failure: Stop!

Mon Sep 14, 2020 9:17 pm

I don't know the make of the one that was replaced, unfortunately - didn't think to check it before it was towed, and it's not on the paperwork. New one is a Varta.

cnc
Posts: 3
Joined: Sun Apr 25, 2021 5:20 pm

Re: Electrical system failure: Stop!

Sun Apr 25, 2021 5:28 pm

Another 2019 e-Golf battery pack failure with the same "Stop!" message. It's at the dealer now with a battery balancing issue, with the pack to be rebuilt by an engineer who is not on-site. The dealer has been friendly and helpful, but no ETA. They haven't even ordered parts yet, and tomorrow is day 10 of this vehicle being in the shop since 2019, after another electrical issue last year.

Edit - just for posterity, this car was literally never fast charged.
Last edited by cnc on Wed Apr 28, 2021 4:06 pm, edited 1 time in total.

f1geek
Posts: 876
Joined: Fri Jan 23, 2015 1:18 pm
Location: SF Bay Area

Re: Electrical system failure: Stop!

Mon Apr 26, 2021 7:11 am

Sorry to hear about your troubles. Do you know the mV difference between the cell with the highest voltage and the cell with the lowest voltage? How many cells are bad?
2017 e-Golf LE, Multi Coat White with Black Vegan Leather interior

cnc
Posts: 3
Joined: Sun Apr 25, 2021 5:20 pm

Re: Electrical system failure: Stop!

Wed Apr 28, 2021 3:51 pm

Hey f1geek,

Those are very good questions, and I'm not sure of the answer to either of them. No issues with the dealer or even VW necessarily. They're certainly spending resources to address the issue.

I'm mostly concerned at this point about repair timelines, and whether "fixed" really means fixed. Now that I've had this happen, I'm uncovering a number of these issues with 2019s (something like 8-10 in total) reported across the Internet, including at least one person who had this repair done and then had other parts of the battery fall out of compliance a few months later. I love the car, but this has unfortunately introduced a real confidence issue in my vehicle and 2019 eGolfs in general.

f1geek
Posts: 876
Joined: Fri Jan 23, 2015 1:18 pm
Location: SF Bay Area

Re: Electrical system failure: Stop!

Wed Apr 28, 2021 7:42 pm

Thanks for the update. I wonder if this issue has to do with cell manufacturing location? The Samsung SDI cells were supplied from Hungary and I believe China as well. Maybe one of the sites produced less than high quality cells? At least VW is taking care of it for you, albeit slowly. I am keeping an eye on the cells delta voltage in my car's pack and right now it's 10 mV. I wonder what the threshold is to trigger a system error.
2017 e-Golf LE, Multi Coat White with Black Vegan Leather interior

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