Battery Warning Light On While Driving
The battery warning light on a 2021 Tesla Model Y indicates a potential issue with the high-voltage battery system, charging system, or 12V auxiliary battery. This requires immediate attention to avoid loss of power or vehicle shutdown.
Diagnosis Details
Possible Causes
12V auxiliary battery failure or low voltage
High-voltage battery management system (BMS) fault
Charging system malfunction (e.g., DC-DC converter failure)
Software glitch or sensor error
Related OBD-II Codes
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What You Should Do
Safely pull over and stop the vehicle.
Check the touchscreen for additional warnings or error messages.
If the 12V battery is suspected, try a reset by pressing and holding the brake pedal and both scroll wheels on the steering wheel for 10 seconds.
If the light persists, contact Tesla Roadside Assistance or schedule a service appointment immediately.
Do not continue driving if the vehicle shows reduced power or other alerts.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
