One of Tesla’s largest EV charging stations in Southern California, the 64 unit Supercharger location at 2450 W. Arrow Route, Upland, has been shut down due to power and labeling issues that San Bernardino County says do not meet state requirements for electric vehicle charging. The issue is being addressed now, and the site is expected to reopen soon.

Public Information Officer David Wert said the county has been working with Tesla for six months to resolve the issue, but decided the chargers needed to be shut down until changes are made.

One of Tesla’s largest EV charging stations in Southern California, the 64-unit Supercharger location at 2450 W. Arrow Route, Upland, has been shut down due to power and labeling issues that San Bernardino County says do not meet state requirements for electric vehicle charging. Courier photo/Peter Weinberger

All EV chargers must meet state requirements for amperage to ensure consumer safety, with each charger displaying a tag listing its electrical output. At the Arrow Route location, the chargers’ output is reportedly set too high, not matching the correct amperage stated on the tags.

Wert noted that other charging stations in Orange County could have similar issues. Although it’s unclear how widespread the problem is, San Bernardino County decided it could no longer wait for a fix, citing safety concerns.

According to a Tesla Energy employee, the re-labeling project at the Upland Supercharger site has been completed, and the company is now awaiting final approval from San Bernardino County Department of Weights and Measures. Once confirmed, the 64-unit charging station is expected to return to service.

The employee said the discrepancy in question was minor — just 0.01 kW off from the labeled amperage. A similar issue occurred at another Tesla location in Orange County, which has since been corrected with shutting down any chargers.

Scott Brown, owner of Connie and Dick’s Service Center in Claremont, said there’s no cause for alarm.

“Tesla’s battery management system ultimately controls the energy flow and its measuring and throttling of that flow,” Brown explained.

So, are Tesla vehicles at risk of serious electrical issues? Experts say no. The margin of error was too small to pose a danger, and the vehicles themselves are equipped with systems designed to make necessary adjustments automatically.

The good news for Tesla owners is the issue is nearly resolved, and the Upland site is on track to reopen soon.