Charging problems…

Floating_Bus | 2026-03-09 11:04 | 3 views

21 MY LR - Saturday night I charge to 80%, Sunday afternoon (69%) I set to charge to 100%, because of travel in the evening. Level one charger (Tesla charger) **!CORRECTION: Level 2 - 240v I come out to a car charged to 68%, says it’s at 100% because of reduced capacity. I travel slower and make it to my destination with 14%. Overnight on a level one, it’s now only charging to 28%. Different charger BTW (non Tesla) **!CORRECTION: Level 2 - 240v I’ve made an appointment for tomorrow afternoon. I’m within warranty at 98k miles. I’m thinking it’s the battery. Smart, right? I’ve got a few questions: Could it be something else? What could I try? When I give it to them in service, will they provide a loaner? If my car for some reason tomorrow night only charges to 10% and can’t make it to the dealer, will they tow at no charge? Thanks. *** UPDATE *** I brought in my car. Service person looked and said “Wow! Major issues with the battery. We’re going to replace the whole pack. They were transparent that the battery isn’t going to be new, but comparable to my old pack before failure or better. They also had a loaner for me waiting before our conversation ended.

Comments (4)

cincinnerdi 2026-03-09 12:17

I have a 2018 M3 (expecting 2026 MY soon) and have not seen this before, though I've had poor experience with 120V level one charging. I wish I had a better answer, but a few questions: Can you try a Tesla L2 charger? Or a L3 Tesla Supercharger? Photos of error messages on screen / app?

Floating_Bus 2026-03-09 13:02

I corrected above, level 2 charger. Error codes were multiple: BMS_a079 - max charge level reduced. There was another error, I’ll update when I get a chance to go out to my car, I’ll also post a pic. It was concerning that while driving if there was a reduction in speed it kept saying the same error over and over. I’m guessing slowing down acts like “charging“ so it kept beeping. Concerning on a 100 mile roadtrip on a Sunday night.

cincinnerdi 2026-03-09 16:38

Oh, I think your conclusion may be right. Battery management system error. I found this: https://www.reddit.com/r/TeslaLounge/s/CRdXQP9lGe

No_Individual1336 2026-03-10 23:18

I just had my charge port ecu replaced and that was not included under the battery warranty, unfortunately. However this issue sounds more like battery failure.

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