Tesla
Noisy or Failing Contactor
Wall Connector makes loud clicking, buzzing, or chattering noises when starting or during charging
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Weak contactor coil, Low control voltage, Mechanical wear of contactor, Loose mounting hardware causing vibration
How to Fix / Troubleshooting
Safety: Repeated chattering can overheat contacts. Turn off power before opening the unit.
- Identify source: Listen carefully to confirm the noise is from the Wall Connector and not from the service panel or other equipment.
- Inspect contactor: With power off and cover removed (qualified person), check that the contactor is firmly mounted and that no foreign objects are interfering with its movement.
- Check supply voltage: Ensure the Wall Connector is receiving stable line voltage within Tesla's specified range.
- Replace unit: If the contactor continues to chatter or buzz loudly, the internal contactor or control board is failing; replace the Wall Connector.
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Repair Difficulty
Hard
4/5
Required Part
Tesla Wall Connector internal contactor
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