BYD Denza 2015 - Clicking Sound, Won't Start
A rapid clicking sound when trying to start your BYD Denza 2015 indicates a weak or dead battery, or a poor electrical connection, preventing the engine from cranking.
Diagnosis Details
Possible Causes
Weak or dead 12V auxiliary battery (common in hybrids/EVs like Denza; the high-voltage battery doesn't start the engine directly).
Corroded or loose battery terminals or ground connections, reducing power to the starter.
Faulty starter motor or solenoid, though less common if battery is weak.
Related OBD-II Codes
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What You Should Do
First, check the 12V auxiliary battery terminals for corrosion or looseness and clean/tighten them if needed.
Try jump-starting the car using another vehicle or a portable jump pack (follow EV safety guidelines).
If it starts, the battery likely needs replacement.
If not, the starter or a deeper electrical issue may be at fault; have a mechanic test the battery and charging system.
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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.
