Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Tesla Model 3 BaseFACTORY OEM SERVICE PROCEDURE
High Voltage System -- Model 3
- High Voltage Testing
- Charge System Inlet
- Actuator - Door Assembly - Charge Port (NA) - Remove and Replace
- Bracket - Busbar - (Charge Port to HV Battery (3-Phase)) - Remove and Replace
- Bracket - Manual Release Cable - Charge Port - Remove & Replace
- Bracket - Retainer - Busbar - (Charge Port to HV Battery (3-Phase)) - Remove and Replace
- Busbars - (Charge Port to HV Battery (3-Phase)) - Remove and Replace
- Busbars - (Charge Port to HV Battery (China)) - Remove and Replace
- Busbars - (Charge Port to HV Battery) - Remove and Replace
- Charge Port and Busbar to (HV Battery (Single-Phase)) - Retrofit
- Charge Port and Busbar to (HV Battery (3-Phase)) - Retrofit
- Carrier Assembly - Charge Port - Remove and Replace
- Charge Port - Manual Release of Cable
- Charge Port (Busbar Type) (3-Phase) - Remove and Replace
- Charge Port (Busbar Type) - Remove and Replace
- Charge Port (China) (Busbar Type) - Remove and Replace
- Charge Port Voltage Check
- ECU - Charge Port (Combo Adapter) Retrofit
- Deadfronts - Pin - Charge Port (NA) (Damaged) - Remove and Replace
- Deadfronts - Pin - Charge Port (NA) (Undamaged) - Remove and Replace
- Door and Hinge Cover - Charge Port - Remove and Replace
- Door Assembly - Charge Port (Busbar Type) (EMEA) - Remove and Replace
- Door Assembly - Charge Port (China) - Remove and Replace
- Door Assembly - Charge Port (EMEA) - Remove and Replace
- Door Assembly - Charge Port (NA) - Remove and Replace
- ECU - Charge Port - Remove and Replace
- Latch Actuator - Charge Port - Remove and Replace
- Latch Pin - AC - Charge Port (China) - Remove and Replace
- Release Cable - Charge Port - Remove and Replace
- Safety Cap - Busbar - (Charge Port to HV Battery) - Remove and Replace
- Sensor Target - Door - Charge Port - Remove and Replace
- Sub-Assembly - Latch - Charge Port (EMEA) - Remove and Replace
- HV Harnesses
- AC Cable - (Charge Port to HV Battery (3-Phase)) - Remove and Replace
- HV Harness - (Center Ski to A/C Compressor) - Remove and Replace
- HV Harness Assembly - (Charge Port to HV Battery (Single-Phase)) - Remove and Replace
- HV Harness Assembly - (Charge Port to HV Battery (Three-Phase)) - Remove and Replace
- HV Harness - (HV Battery to Front Drive Unit) - Remove and Replace
- HV Harness - (HV Battery to PTC Heater and A/C Compressor (Dual Motor)) - Remove and Replace
- HV Harness - (HV Battery to PTC Heater and A/C Compressor (RWD)) - Remove and Replace
- HV Harness - (HV Battery to Rear Drive Unit) (3DU) - Remove and Replace
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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