Unusual Exhaust Noise at Idle in Tesla Model 3
A Tesla Model 3 is an electric vehicle with no traditional exhaust system. An unusual noise from the rear at idle could be from the heat pump, coolant pump, or a loose underbody panel. It may also be a failing electric drive unit bearing or a stuck brake caliper.
Diagnosis Details
Possible Causes
Heat pump or coolant pump operation (normal but can be louder than expected)
Loose or vibrating underbody panel or heat shield
Electric drive unit bearing wear or debris in the motor
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What You Should Do
Inspect the rear underbody for loose panels or debris.
Listen closely to pinpoint the source.
If the noise is rhythmic or metallic, schedule a service appointment with Tesla.
Check for any recent software updates that may affect HVAC operation.
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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.