Tesla Model 3 No Start – No Sound
The vehicle shows no response when attempting to start, with no audible sounds. This indicates a complete electrical failure, likely related to the 12V battery, high-voltage system, or a critical control module.
Diagnosis Details
Possible Causes
12V battery is dead or failed – common in Tesla Model 3, especially after 3-4 years.
High-voltage battery contactor failure or pyrofuse blown.
Main ECU or BMS (Battery Management System) fault preventing power-up.
Related OBD-II Codes
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What You Should Do
Attempt to jump-start the 12V battery using the front trunk (frunk) terminals.
If the car powers on, replace the 12V battery.
If no response, contact Tesla Roadside Assistance or a certified EV technician for diagnostics.
Related Repairs
Estimated Repair Cost
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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.