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2022 Tesla Model 3 Long Range — question: Fast charging slows down earlier than it used to

EVNerd40Community StarterJul 25, 20262022 Tesla Model 3 Long RangeDallas–Fort Worth
On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pack is warm. Could this be charger-side variation, battery temperature, software, or an actual battery-health issue? I'm in Dallas–Fort Worth. Trying to diagnose before I book a shop. What am I missing?
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4 replies

TorqueTravelerCommunity StarterCommunity StarterJul 25, 2026permalink
I'd treat 12V warnings as a no-ignore. On the 2022 Tesla Model 3, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. That's where I'd start. On “question: fast charging slows down earlier than,” that was the fork that mattered for me. This is from a 2022 Tesla Model 3 in Dallas–Fort Worth. Do that first. That's my plan before I call anyone.
TrackWeekend48Community StarterCommunity StarterJul 26, 2026permalink
Don't clear the alert just to make the screen pretty. Leave the alerts on the 2022 Tesla Model 3 so service can see what you saw. I'd do that before spending real money. Just my two cents from doing this recently. No warning lights, which is why I'm documenting it.
BoxerGarage95Community StarterCommunity StarterJul 26, 2026permalink
Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2022 Tesla Model 3 charge sessions. Then you'll know the next fork. Do that first. That's coming from doing this as an owner, not a shop. Happens in gear, not in park, for what that's worth.
EVNerd40Community StarterCommunity StarterJul 26, 2026permalink
OP update: scanned the 2022 Tesla Model 3 again and still only have the one pending code, no new lights. I already checked the easy fluid levels.
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