EV Charging Help
Residential · Brands & Models8 min read

Home EV Charger Offline or Won't Connect? Wi-Fi and Firmware Fixes

When a home EV charger shows offline, the car almost always still charges: ChargePoint says its Home Flex keeps charging on schedule when Wi-Fi drops, and Wallbox says its Pulsar Plus schedules and static load management work without a cloud connection. The fix usually lives in the home network. Tesla's Australian support page lists a 2.4 GHz network on WPA2 security with no MAC address filtering as the settings to check, ChargePoint's first steps are to confirm the internet works at the charger and to restart the router, and Wallbox suggests a different network or a phone hotspot. Tesla and Wallbox chargers get firmware over Wi-Fi, so an update problem is a connection problem first.

By EV Charging Help editorial teamFor homeownersNov 1, 2026
On this page

A charger that shows "offline" in its app is usually still able to charge your car. What you lose is the app: scheduling changes, usage history, remote start, and firmware updates. That distinction decides how urgent the problem is, so check it first. Plug in, and if the car starts charging, you have a connectivity problem, not a dead charger.

Short answer: Move through the problem in this order. Confirm the car charges. Confirm the internet works at the charger's location. Restart the router. Check that your Wi-Fi network is one the charger can join (Tesla lists 2.4 GHz and WPA2). Then reboot the charger and, only then, call the maker. Firmware updates arrive over that same Wi-Fi link, so a stuck update is almost always a weak or incompatible connection.

First: does it still charge?

Two of the three makers covered here say so in their own documentation.

ChargePoint states that if your Wi-Fi goes down, the Home Flex "will still charge your car on schedule." Wallbox says the Pulsar Plus's smart features, including charge scheduling and Static Load Management, "work without a cloud connection."

Tesla's support page is less direct on this point, but its status-light table separates a charger that has lost power from one that is up and waiting. No lights means the Wall Connector is not receiving power, and Tesla's remedy is to check for an outage or a tripped breaker. That is an electrical problem, not a Wi-Fi one.

If the car does not charge at all, stop here. On a Wallbox, Wallbox's table treats a red error light as a safety fault, not a Wi-Fi problem, and its remedy is to disconnect the connector from the vehicle, switch the circuit breaker off for a few seconds, and switch it back on. If that does not clear it, Wallbox says to contact its service line, and also says to have your installer check that the current selector is not at position 0, 8 or 9.

Why the charger will not join your Wi-Fi

Most "won't connect" cases come from a mismatch between the charger and the home network, not a defect.

Tesla Wall Connector. Tesla's support page for Australia lists the network settings to check when the Wall Connector cannot find your network or does not show checkmarks next to "Connected to Tesla" and "Connected to Internet":

  • 2.4 GHz Wi-Fi, with no 5.0 or 6.0 GHz networks sharing the same name
  • WPA2 security, with no WPA2/3 shared network
  • No MAC address filtering
  • No content filtering

Tesla's U.S. troubleshooting page covers commissioning, status lights and the Diagnose tool, but does not repeat that list, so the Australian page is where we found it stated. Tesla's U.S. page says to commission the unit in the Tesla One app, using the QR code on the front of the Quickstart Guide, and to connect it to home Wi-Fi.

The practical meaning: if the Wall Connector does not show your network after a rescan, check whether your router shares one name across bands or uses mixed WPA2/WPA3 security, and if so set up a separate 2.4 GHz network on plain WPA2, the combination Tesla lists. Your router's manual or your internet provider can tell you how to set that.

ChargePoint Home Flex. ChargePoint's Home Flex troubleshooting page lists these steps, in order:

  1. Check your internet. If your internet provider's connection is down, the charger cannot connect "even if your WiFi network is up and running." Test with a phone or computer on the same Wi-Fi.
  2. Restart the router: unplug it, wait a few seconds, plug it back in.
  3. Check the cables between the router and modem.
  4. If you changed your network name or password, or replaced your access point, open the ChargePoint app and choose Reconfigure WiFi from the home charger settings.
  5. If none of that works, call ChargePoint at 1-888-758-4389.

ChargePoint also says activation and connected features need a Wi-Fi signal at the spot where the charger is installed, and that you may need a range extender. A garage far from the router is the classic cause.

Wallbox Pulsar Plus. Wallbox's North America troubleshooting table for the Pulsar Plus (last updated December 14, 2023 on the page we read) covers a charger that will not connect over Wi-Fi:

  • If the network is unstable, check that another device can reach the internet on it, restart the router, try a different Wi-Fi network, or create a hotspot with your phone.
  • If the network is closed, open the ports Wallbox lists: TCP 80 for data transfer and UDP 123 for time synchronization.

The hotspot trick is useful beyond Wallbox. If the charger joins your phone's hotspot but not your home network, the charger and the app are fine and the home network is the problem.

The app says offline, but the charger works

This is the most common complaint, and often the least serious. Our ChargePoint Home Flex review notes that owners have reported the app showing a charger as offline while it charges normally. ChargePoint's page says a charger that is not connected still follows its schedule.

ChargePoint's page also gives a way to check status directly: open the Home Charger screen in the app. If it says Not Connected, work through the Wi-Fi steps above. If it shows connected and scheduling or data syncing is still wrong, reboot the charger from the app (Home Charger, then Settings, then Reboot Charger).

The same page flags one scheduling issue that has nothing to do with Wi-Fi: some Tesla Model 3 and Model Y vehicles had a software bug that kept the car from waking up for scheduled charging, resolved in vehicle software version 2020.24 or later. If a Tesla will not start on schedule, update the car.

Stuck on a firmware update

We could not find a published "stuck update" procedure from any of the three makers. What each does say points the same direction:

  • Tesla: Wall Connectors receive firmware updates automatically when connected to Wi-Fi, and its first troubleshooting step is making sure the unit is commissioned correctly so it can download the latest firmware.
  • Wallbox: the Pulsar Plus troubleshooting table says to check that the charger has the latest firmware, and its restart path is in the app under Settings, Advanced Options, Restart. If a repair needs Wallbox service, the page lists (888) 787-5780 and service.na@wallbox.com.
  • ChargePoint: the Home Flex page does not describe firmware updates. Rebooting the charger from the app is the documented reset.

So the order for a stalled update is the same as for a lost connection: confirm the signal at the charger, restart the router, restart the charger from its app, and try again. If it still stalls, contact the maker with the charger's serial number, the firmware version and what the app shows.

What about JuiceBox owners?

If your charger is an Enel X JuiceBox, the Wi-Fi may be fine and the cloud service behind it may be the problem. Our Wallbox, JuiceBox and others lineup explains what changed after Enel X Way shut down its North American operations and where owners reconnect today. The hardware still charges a car as a basic Level 2 unit.

How to avoid the next outage

Connectivity trouble is mostly a home-network chore, so a few habits help:

  • Give the garage a real signal. ChargePoint and Wallbox both point to range extenders or a different position when the signal at the charger is weak.
  • Keep the charger's network name and password in a safe place. A new router or a renamed network is a frequent trigger, and ChargePoint's fix is to reconfigure Wi-Fi in the app.
  • If you rely on utility rebates or managed-charging programs, a connected charger may be a condition. See smart features that matter for which features are worth keeping online.
  • Schedule from the car when you can. Many EVs can set their own charging schedule, which keeps working if the charger is offline.

For a wider view of which models keep their apps and support up over time, see home EV chargers worth considering and the Tesla Wall Connector review.

Last factually verified: November 1, 2026. Checked against Tesla's Wall Connector troubleshooting pages (tesla.com/support/charging/wall-connector/troubleshooting for the U.S., read November 1, 2026; tesla.com/en_au/support/charging/wall-connector/troubleshooting for the 2.4 GHz and WPA2 network settings), ChargePoint's Home Flex troubleshooting page (chargepoint.com/drivers/home/troubleshooting/flex), and Wallbox's Pulsar Plus help center page (support.wallbox.com/na/knowledge-base/pulsar-plus-product-overview/, marked updated December 14, 2023). The ChargePoint page is undated, and Wallbox's page is almost three years old, so check your charger's app for current steps. Tesla's U.S. page does not state the 2.4 GHz and WPA2 requirements; they come from its Australian page and we did not find the same list on a U.S. page. Forum reports of band steering, passwords with special characters and specific firmware versions were not used because they are not manufacturer guidance. We have no affiliate relationship with any manufacturer mentioned.

evcharginghelp.com is editorially independent and receives no compensation from any company mentioned.

Sources & verificationLast verified Nov 1, 2026

This article draws on 4 primary sources, cited inline where each figure appears. We re-check the numbers when incentive amounts, regulations, or product availability change.

Last updated Nov 1, 2026

ShareLinkedInXEmail
Editorial standards
Keep reading

Related articles

For homeowners

2026 NEC 625.4: Who Can Install a Home EV Charger

The 2026 National Electrical Code is rolling out state by state, and it adds a new EV-specific rule: Section 625.4 requires permanently installed home chargers to be put in by a qualified person, a provision that did not exist in the 2023 code. As of this update, nine states enforce the 2026 edition: Arkansas, Colorado, Maine, Massachusetts, Minnesota, North Dakota, Oregon, Texas, and Wyoming. A full 50-state tracker, built from the National Fire Protection Association's enforcement map plus later state sources, shows where every other state stands and which ones are moving toward the 2026 edition. For most homeowners, who already hire a licensed electrician for a permitted 240-volt circuit, this changes little in practice, but it closes a narrower path some jurisdictions left open for a homeowner to hardwire the unit themselves. It does not affect the outlet and circuit that feed a plug-in charger, and it does not by itself determine whether your state requires a licensed electrician; that is a separate question set by each state's licensing board.

Updated Oct 202614 min read
For homeowners

Amperage and EV Charging Speed: What the Numbers Mean

A 48-amp charger adds roughly 30 to 36 miles of range per hour; a 32-amp charger adds roughly 20 to 25. For most drivers, 32 to 40 amps is plenty. Higher amperage only helps if your vehicle's onboard charger can accept it, and many top out around 7.2 kW (about 30 amps) regardless of what your wall unit offers. Circuits are sized at 125% of the charger's continuous draw, so a 48-amp charger needs a 60-amp breaker.

Updated Oct 202611 min read
For homeowners

Best Time to Charge Your EV at Home: Find Your Off-Peak

Off-peak windows and rates vary by utility, not by a national rule of thumb: Georgia Power's Overnight Advantage prices Super Off-Peak at about 2 cents per kWh from 11pm to 7am, while California standardizes a 4pm-9pm peak across PG&E, SCE, and SDG&E. Some utilities charge every kWh in the home at the TOU rate; others, like Con Edison, require a second meter just for the charger. And a charger set to chase the cheapest hour alone can leave you with a cold, unheated car in the morning; pairing off-peak charging with a scheduled-departure feature avoids that trade.

Updated Oct 20269 min read

Want the complete homeowner's guide?

The Home EV Charging Guide covers everything from whether you need Level 2 to installation, incentives, and the best brands. Free, just enter your email.

Get the free guide

The Weekly EV Charging Briefing

One email a week. Just EV news that matters.

By subscribing you agree to our Privacy Policy. Unsubscribe any time.