Tesla Model S Owners & Service Manuals

Tesla Model S: Power grid or vehicle issue limiting AC charging

Tesla Model S (2012-2023) Owner's Manual / Consumer Information / Troubleshooting Alerts / Power grid or vehicle issue limiting AC charging

Unplug and retry / Try different charging location

Charging speed has been reduced due to a condition that affects your vehicle's ability to charge with AC power. DC fast charging / Supercharging should still function as expected.

This condition could occur due to power supply disturbances caused by the external charging equipment or by the electrical power grid. In some cases, this condition can even result from turning on nearby electric devices that draw a lot of power.

If these possible causes can be ruled out, then a condition with your vehicle itself may also be affecting AC charging.

This alert may be accompanied by another alert that specifies the condition affecting AC charging. If so, it is recommended you start by investigating that alert.

Further troubleshooting tips based on equipment type:

  •  If using a Mobile Connector, try charging your vehicle with a different wall outlet.
    •  If charging speed is no longer reduced, the issue was likely with the original wall outlet. It is recommended that you contact an electrician to inspect the building wiring connection to that outlet.
    •  If charging speed is still reduced, the issue may be with the Mobile Connector or the electrical grid.
  •  If using a Wall Connector, try charging your vehicle with different charging equipment like a Mobile Connector powered by a separate wall outlet.
    •  If charging speed is no longer reduced, the issue was likely with the Wall Connector. Contact an electrician to inspect the building wiring connection to the Wall Connector. They should make sure that all wires are properly connected and torqued according to the installation guide for the Wall Connector.

As this alert may be present due to external charging equipment and power sources, it is recommended that you:

  • Try charging with different wall outlets.
  • Try charging with multiple, different types of charging equipment at different locations.

You can also try charging your vehicle using a Tesla Supercharger or Destination Charging location, all of which can be located through the map on your vehicle's touchscreen display. See Maps and Navigation for more details. Additional third-party charging stations may also be available in your area to help you to pinpoint the issue.

If this alert persists when attempting to charge at multiple locations and with different charging equipment, it is recommended that you schedule service.

For more information on troubleshooting Mobile Connector or Wall Connector status lights, refer to the product's Owner's Manual at Charging & Adapter Product Guides. If using other external charging equipment, refer to the manufacturer's provided documentation for troubleshooting tips.

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