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I took it to a shop that (I think they used the tesla toolbox?) determined that my battery didn't need to be replaced. They fixed the error code and my car works like before. But I have turned off the wifi so I don't get anymore OTA updates.

It has happened to so many out of warranty batteries .. it makes you wonder.

This is a pretty detailed article about the FUSC promotion.

What's the year of your model S? How many miles? Did the error happen after you got it back from the service center?

I know someone that had their Bolt battery pack replaced and they were given a NEW pack with a NEW 10 yr, 80,000-mile warranty. That's the way it should be.

and GM apparently ...

Did it die after an OTA update? Also, how often did you charge at home vs supercharging? There are a few threads on here that discussed similar events to yours. I think SC eventually charged for the lower quote since the owners didn't approve the higher quotes. The narrative has changed from...

Many owners of 2012-2014 vehicles, which were working just fine, had their vehicles crippled shortly after the warranty period expired. Did yours happen after an OTA software update?

LOL .. you don't hear this anymore. Now the narrative has changed to, "What do you expect from an old battery pack made by a startup?"

@NV Ray @David_Cary -- Here's a list of owners with battery issues from this site. There are similar discussions on reddit, IG, fb, tiktok, etc. A law group that won against Apple for 'batterygate' is looking into this issue.

I'm 100% fine with deterioration over time. At least those owners get to use their vehicles and can pay for a new pack when they feel the price justifies the increased range. They're not forced to make a decision. I know an owner of a 10+ yrs old Leaf. He says that he gets about 60% of the...

Yes, this is totally sus. Tesla is not the only electric car company with battery packs that are 8+ years old -- not to mention hybrids with much older battery packs. But Teslas are the only vehicles that are crippled unless the battery pack is replaced for $15k - $20k ... and these issues...

My prior service rep knew about this so they just copy-pasted the prior response, even if it doesn't really answer the question. And after working with another SC, I found that the answer is not correct since I had the option to select a new or remanuf pack.

Not all service centers are created equal. Some are downright horrible and unreliable. Contact another service center to get a 2nd or 3rd opinion. Maybe they can do remote diagnostics? If you're in NM then you'll have to go out of state, unfortunately.

I got an error message for the passenger airbag. They wanted to charge me $510 to perform an inspection while the vehicle was at the SC. I said no. The light went away on its own.

I saw a 2017 MS 100D with FUSC and only ~70k miles for $57k. Great deal if I knew the company wasn't going to drop a software update that would reduce the charge rate or make me cough up $20k to fix something. I'm selling mine after all the battery issues. Not hearing good things about the 90D...

I read your post regarding Tesla disabling supercharging 'via a command from the supercharger itself': "Seems even offline cars on semi-modern firmware can now have it perm disabled via a command from the supercharger itself." If they can do this to offline salvaged vehicles, then they can do...

For vehicles that are out of warranty, this is a plus. But will everything else -- app, navigation, SC, FUSC, etc -- work?

Or try to get an influencer to say something about it. He's not going to say anything if he thinks a class action lawsuit is coming.

I believe it defaults to 'Ideal' miles if there was a reset. Did you change it to rated?

So charging to 85% would really be 80% of a 90 pack? Maybe your battery will last longer this way? Would be interesting to find out how much they want to charge.

Glad they fixed it and it's working now. I can relate to how your wife feels about the incident. It's a stressful event, and the trust is gone.

@wk057 -- Can you confirm or deny that Tesla built in a 'counter' that counts the number of times a vehicle has been supercharged, and once it hits this number the battery maximum charge level is reduced and the code is activated?

None of the codes that you showed indicate that it's the battery or DU. Hopefully it's the battery and they install a new pack.

Yeah, I was thinking it'll most likely be a remanufactured pack, which hasn't performed well for a lot of folks.

From what I've seen, there's more correlation with the vehicle age is than miles. Once a vehicle is out of the battery warranty (all 2012s and 2013s and some 2014s) they get the BMS_u029 / "Maximum battery charge level reduced" code. It has happened to a 2013 with 30,000 miles, 70k, 75k and...

It's pretty random. Also check out "BMS_u029" which is the error code associated with the "Maximum battery charge level reduced" message. But it has happened to a lot of people 1) after the battery warranty expired (2013s and some 2014s), and 2) after an OTA update.

Sorry you're going through this. I'm going to cancel my appt for a new pack (exact same as yours), and sell my vehicle. I'll wait until they come out with more stable products. Even if it's the DU it's another $10k

**** ... another 10 grand. Hopefully not. Which code would indicate the DU? It looks like the BMS codes happened while it was serviced. BMS_f033 The Battery Management System (BMS) will trigger this alert when it senses a loss of contactor power while the contactors are closed. The BMS...

Damn that sucks. Did you visually confirm that a 1014116-00-C was installed?

I got the same part numbers and price. No tax is a nice 'discount'!

Similar situation with me except my MS 85 is still working but only charging up to 85 miles (thankfully). You can definitely sell it but you'll prob get low to mid twenties for it. Some questions: Is yours an 85? How many miles? Did you do an OTA update recently? Did the SC share with you the...

Please share what pack they put in under warranty. Hopefully it's new.

If you logged into your account and you can still see the SC01 code then it's a good chance you will keep it. Was the car registered under the dealership or the prior owner's name? It's unusual for a dealer to offer a Tesla with FUSC because it usually gets removed once it's sold to a dealer...

When did your battery warranty expire? Did the battery fail shortly after an OTA software update?

New 90 KWH packs are going for $17k and you'll get 4yr/50k warranty. It'll be interesting to see what they'll offer for your current pack.

I had to go to another SC to get someone to respond to my request. My initial SC said that they don't sell remanuf packs -- go figure. Your battery is still under warranty, correct? My understanding is that they are putting in remanuf battery packs for warranty work. And it won't extend your...

When does/did your battery warranty expire?

There are over 40 others (including myself) on this site that experienced battery issues on their 2013s after the warranty period expired ... many after an OTA software update. I suspect we'll see a batch of 2014s with the same issues after their warranty expires.

Did you contact them by email? Or snail mail? When was it sent?

New SC is quoting $17k for a new 90 KWH pack vs $13.5k for a remanufactured pack. Both have the 4 years / 50,000 miles warranty. Going new is a no-brainer for the $3.5k difference.

It would have been nice "if Tesla added detection checks or additional diagnostics in the newer firmware" during the warranty period. But that would have been expensive for them. :-) No fun doing that.

Canceled my appointment with the prior SC because they wouldn't quote me for a remanuf pack. Got one from another SC. Remanuf pack costs $4,500 less but the quote is $5k less because of labor charges.

My only warning was "Maximum battery charge level reduced". I was surprised that they wanted to replace the 12V because it was the last service performed at the same SC. I got the "Schedule service. Low voltage battery needs replacing" warning in August 2022 and that's when I replaced it. (They...

Will soon need a poll / thread for "Maximum battery level reduced with 2022.X.XX.X Software".

After reminding them that the 12V was replaced in August, they removed the line item. Now, it's just the HV.

I thought it was broader but after reading it again, it looks like it's related only to that period. Thanks. https://angeion-public.s3.amazonaws.com/www.ModelsVoltageUpdateSettlement.com/docs/Settlement+Agreement.pdf (bolded for emphasis) Release of Claims 1. As of the Effective Date of this...

My app says that the estimate is outdated, contact the service advisor ... I'm asking my SC for a quote on the refurb battery and they give me the same canned response: "We do not pick what pack or part number we use it is up to the distribution center ..." Hope that's not the case.

They're quoting me $18k and the pack they're referencing (1014114-00-D) is my current original 85KWH pack. When I asked them if I can receive your price and battery pack (since I also have a 2013 MS 85), here's their response:

Would a new battery pack on an older model increase the charge speed?