Tesla Alerts Explained: What Warnings Mean and How to Diagnose Them with AI

How Tesla alerts work

When the car detects an issue it raises a named alert with a short message on the touchscreen (tap the bell / Notifications icon to see recent ones) and sometimes a push notification in the Tesla app. Tesla's owner's manual explains many of them by message, and the public Tesla Service Manual documents procedures for each model. Through the Fleet API, third-party apps can see the car's recent alerts (name, start and end time), not raw diagnostic trouble codes. That means some issues still need a technician.

Common alerts, what they mean and what to do

Alert (paraphrased)	What it usually means	Urgency	Safe owner step
12V / low-voltage battery requires service	The low-voltage battery that powers computers, locks and windows is weak or failing.	High: the car may not wake or restart	Keep it plugged in; schedule service in the app soon.
Tire pressure low / check tire	One or more tires below the recommended cold pressure (on the door-jamb label).	Medium to high	Check all four cold; top up. A tire that keeps dropping is a slow leak: get it inspected.
Charging stopped / unable to charge	Lost power from the charger, a cable or adapter fault, or a charging-port issue.	Low to medium	Re-seat the connector, try another outlet or charger, check the breaker. If it repeats on multiple chargers, book service.
Charge rate reduced	The car lowered charging current, often from a voltage drop, heat, or a worn adapter or outlet.	Medium: overheating outlets are a fire risk	Stop using a warm outlet or adapter; have an electrician check home wiring.
Regenerative braking reduced	A cold or very full battery can't accept much regen energy.	Low, normal in cold weather	Expect normal brakes to do more work; it clears as the pack warms.
Vehicle power reduced / acceleration limited	A very low state of charge, a cold pack, or a powertrain fault.	Medium to high	If the battery isn't low or cold, drive cautiously to a safe place and contact Tesla.
Autopilot features limited or unavailable	Cameras blocked by dirt, fog, snow or glare, or calibration in progress.	Low to medium	Clean the camera areas and windshield; it usually clears. Persistent: service.
Software update installed / required	Informational, or an update is waiting.	Low	Install on Wi-Fi when parked.

Alert names vary by model and software version. This table is a plain-English guide, not Tesla's official wording. When in doubt, follow the message in your car and Tesla's owner's manual.

How to diagnose an alert with AI

AskMyEV's diagnose_alerts tool gives your AI (ChatGPT, Claude or Grok) your car's active and recent alerts with when they started and cleared, plus low-tire flags and a link to the Tesla Service Manual for your model. Your AI can then:

Tell you which alerts are still active versus already cleared.
Explain each one in plain English and how urgent it is.
Walk you through owner-level checks (tire pressures, charging setup, cleaning cameras).
Point to the relevant Service Manual section and tell you when to book Tesla Service.

Grok · AskMyEV connectorExample

Is a tire low? I got a warning this morning.

Grokused AskMyEV

Yes. Front left is 36 psi; the other three are 42 psi (recommended is 42 cold). It dropped 5 psi over 3 days, so it's a slow leak, not just the cold.

Top it up today and have it checked for a nail.

Safety limits

High-voltage work is for trained professionals only. Never open or touch orange cables, the main battery pack or drive units. AI answers can be wrong. For anything affecting brakes, steering, or that comes with “vehicle may not restart”, contact Tesla Service.

Frequently asked questions

Where do I see past Tesla alerts?

In the car, tap the Notifications (bell) icon on the touchscreen for recent alerts. Third-party apps that use the Fleet API, such as AskMyEV, can also show recent alerts with start and end times.

Can AI read Tesla fault codes?

Tesla's Fleet API exposes the car's named alerts, not raw diagnostic trouble codes. AI can explain those alerts and link the Service Manual, but some issues need Tesla Service tools.

What does “12V battery requires service” mean?

The low-voltage battery that runs the car's computers, locks and windows is weak. Keep the car plugged in and schedule a replacement through the Tesla app soon, because the car may not wake or restart.

Is it safe to fix my Tesla myself?

Owner-level tasks (tire pressure, cabin filter, wiper blades, cleaning cameras) are fine and covered in the owner's manual. High-voltage components are dangerous and for trained technicians only.