I have a 2024 Volkswagen ID.4 and for the past month the battery won't reach 100% like it used to. It's stuck at 80-85% max. I'm still within the three-year warranty, but I'm not sure if this is a serious issue or normal for electric car batteries.
It's not normal for it to drop like that all of a sudden, especially if it was charging to 100% before. It could be a software issue that's blocking the charge to protect the battery, or a faulty sensor, but either way it's covered under warranty so contact your Volkswagen dealer as soon as possible - don't wait. If you don't deal with it now you risk the problem getting worse and then it'll be harder to prove it was still under warranty when it happened.
Contact VW service right away since you're still under warranty: the charge limit at 80-85% might be intentional by the system to protect the battery (especially if you're always charging to 100%), but a sudden drop compared to before suggests an actual fault, like a sensor issue or a thermal management problem. They have the diagnostics to figure out whether it's software or hardware, and if it's defective they'll fix it for free.
The ID.4 has a battery thermal management system that sometimes limits charging to max if it detects abnormal temperatures or if you're charging to 100% too often. Before rushing to the dealer, try checking whether the problem only happens with public charging stations or also at home: certain home chargers don't communicate well with the vehicle and can trigger these limits.
If the block persists even with different charging methods (like if you charge from a regular outlet vs. the wallbox), then yeah, it's worth contacting Volkswagen. Could be a faulty BMU sensor or a software update that messed something up. Anyway, you're covered by warranty, so you won't pay anything - just don't put it off too long though, because three years go by fast and you'd want to have everything sorted within the coverage period.
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