If charging feels different after a Tesla software update, start with what the car can show you. A change in charging speed can come from battery temperature, state of charge, the charging site, household power, or a saved schedule. Timing alone does not prove that the update changed the charging curve.
Tesla rolls software out by vehicle configuration and region. The release notes shown in the car are the best source for changes that apply to that vehicle.
First, Record What Changed
Write down the software version, starting battery percentage, charge limit, outside temperature, charging location, and the power shown on the charging screen. Compare similar sessions. A home charge at 48 amps and a Supercharger session are different tests, and a battery at 75 percent cannot be compared fairly with one at 15 percent.
Check the Charge Limit and Location Settings
Open Controls > Charging. Confirm the current limit and look for a location-specific setting. Tesla can remember charge limits and charging current by location. A one-time trip limit may also return to the previous daily setting after charging.
Follow the daily limit recommended on the touchscreen or in the Tesla app. The appropriate setting depends on the battery and vehicle configuration.
Check Battery Temperature
A cold battery accepts less power. At a Supercharger, route to the site with Tesla navigation so the car can precondition the battery while you drive. Charging also slows as the battery fills, especially near the top of the pack. That taper is normal.
At home, a lower rate may come from a reduced current setting, a shared circuit, a warm connector, or charging equipment that is protecting itself. Check the message on the charging screen and any lights on the Mobile Connector or Wall Connector before blaming the vehicle.
Review Schedules and Release Notes
Charging and preconditioning schedules can be saved for home, work, or the current location. Confirm the days, start time, and desired completion time.
Then open Controls > Software > Release Notes. Tesla says the notes displayed in the vehicle take precedence when they differ from general owner information. If the notes do not mention a charging change, describe the symptom as an observation, not a confirmed firmware change.
When to Reboot and When to Seek Service
A touchscreen restart may clear a display or interface problem, but it does not repair a failing charge port, cable, onboard charger, or high-voltage component. Seek service if the car repeatedly fails to charge, stops at several unrelated locations, displays an alert, or charges well below the expected rate after the battery has preconditioned.
Save screenshots and test at more than one compatible charger if it is safe to do so. Those details help separate a station problem from a vehicle problem.
References & Further Reading
External resources related to this post. We link directly — no paywalls, no affiliate links.
