Most EVs receive over-the-air (OTA) software updates that can add features, fix bugs, and occasionally improve range or charging behavior. Best practice: install on stable Wi-Fi rather than cellular where possible, make sure the battery is above roughly 20-30% before starting, park somewhere safe since the car may be unusable for anywhere from 20 minutes to a few hours during install, and read release notes since some updates change charging limits, driver-assist behavior, or menu layouts.
At a glance
| Step | Recommendation |
|---|---|
| Connectivity | Prefer home/known Wi-Fi over cellular for large updates |
| Battery level | Keep above ~20-30% before starting |
| Location | Park safely; car may be non-functional during install |
| Timing | Overnight or when the car won't be needed for a few hours |
How EV software updates work
Unlike a traditional car, most modern EVs can update core software wirelessly, similar to a smartphone. Updates range from minor bug fixes to meaningful changes — new charging curve optimizations, updated range estimates, revised driver-assistance behavior, or new infotainment features. Some manufacturers push updates automatically overnight; others require the driver to confirm and schedule the install.
Before you install
- Read the release notes if provided — some updates change default settings (like regenerative braking strength or charge limits) that owners don't expect.
- Make sure the car is parked somewhere safe and won't be needed during the install window; some updates leave core functions unavailable for 20 minutes to a few hours.
- Charge to at least 20-30% if the car doesn't already require a minimum level — some vehicles block updates below a threshold to avoid an interrupted install draining the battery critically low.
- Use home or trusted Wi-Fi for large downloads rather than cellular, both for speed and to avoid data caps on connected-car plans.
- Avoid scheduling an install right before you need to leave — treat it like you would a phone update the night before a big day.
What can go wrong (and how to avoid it)
- Interrupted installs from low 12V battery charge — if your 12V battery is weak, consider having it tested before a major update.
- Unexpected setting changes — some updates reset personalized settings like seat position memory or climate presets; note your preferences beforehand if this matters to you.
- Confusing new menu layouts — many manufacturers publish a summary of UI changes alongside release notes.
It's normal for the touchscreen to go dark, restart, or show a progress bar for an extended period during an update. Unless your manufacturer's guidance says otherwise, avoid disconnecting the charger, opening doors unnecessarily, or attempting to drive until the update reports as complete.
After the update
Take a short local drive to confirm everything — charging behavior, driver-assist features, and infotainment — works as expected before relying on the car for something important. If a feature seems to have changed unexpectedly, check the release notes or manufacturer forum before assuming something is broken; many "bugs" reported right after updates are intentional behavior changes.
Should you install updates right away?
Security and safety-related updates are generally worth installing promptly. For larger feature updates, some experienced owners wait a few days to see community feedback, since occasional updates have shipped with bugs later addressed by a follow-up patch. There's no universal right answer — weigh the update's stated content against your tolerance for early-adopter risk.
Frequently asked questions
Can I drive my EV while it's updating?
How long does an EV software update take?
Do software updates use a lot of data?
Will an update change my car's range or charging speed?
What happens if my EV loses power during an update?
Sources & further reading
- NHTSA — vehicle software and over-the-air update safety recall information
- U.S. Department of Energy — Alternative Fuels Data Center, EV technology
Figures, prices and policy details were current at the last-updated date above. Automotive pricing, incentives and regulations change frequently — verify time-sensitive details with the linked primary sources. Read our editorial policy and fact-checking standards.
