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2023 Model 3 RWD - Charging Port Malfunction, Not Charging

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Ashley M. · rep 0 · May 22, 5:21 AM · 1 replies · solved · Question

Vehicle: 2023 Tesla Model 3 Rear-Wheel Drive

Hello Tesla community,

I'm having a major problem with my 2023 Tesla Model 3 Rear-Wheel Drive. For the past two days, I haven't been able to charge it at all. When I plug in, the charging port light flashes red, and I get a 'Charging Fault' message on the screen. I've tried both my home Wall Connector and a Supercharger, and the result is the same.

I've checked the charging cable for any visible damage, and it looks fine. I've also tried restarting the car multiple times, but the issue persists. This is a brand new car, so I'm really surprised and frustrated. Could this be a problem with the charging port itself, or something internal?

Has anyone with a newer Model 3 experienced a charging port malfunction like this? What was the diagnostic process? Any advice on what to do next would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:21 AM

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ClearTheCode admin answer:

A 'Charging Fault' message and a red flashing charging port light on your 2023 Tesla Model 3 Rear-Wheel Drive indicate a significant issue with the vehicle's charging system. Since it's happening with both your home Wall Connector and a Supercharger, the problem is almost certainly with the car itself, not the charging infrastructure.

Potential Causes:

  • Charging Port Assembly Failure: The charging port itself, including its internal sensors, latching mechanism, or communication pins, could be faulty.
  • Onboard Charger (OBC) Malfunction: The OBC converts AC power from your home or public chargers into DC power for the battery. A fault here would prevent charging.
  • Battery Management System (BMS) Issue: The BMS monitors and controls the charging process. If it detects an anomaly or has an internal fault, it can prevent charging as a safety measure.
  • High Voltage Contactor Issue: Internal contactors connect the battery to the charging system. If one fails to close or open correctly, charging will be inhibited.
  • Wiring or Connector Damage: Although less likely in a new car, internal wiring or connectors within the charging path could be compromised.
  • Software Glitch: While less common for a complete charging failure, a software bug could potentially interfere with the charging handshake protocol.

When to See a Shop:

You must schedule a service appointment with Tesla immediately. A charging fault means your vehicle cannot be recharged, which will eventually render it unusable. This is a critical diagnostic issue that requires specialized tools and expertise. Do not attempt to force charging or disassemble the charging port.

What to Expect at the Shop:

  1. Diagnostic Scan: Technicians will connect to your vehicle to retrieve specific charging system fault codes. These codes are essential for identifying the precise component or system that is failing.
  2. Charging Port Inspection: They will visually inspect the charging port for any physical damage, debris, or corrosion.
  3. Component Testing: The onboard charger, contactors, and the Battery Management System will be tested for proper function and communication.
  4. Wiring Harness Check: Internal wiring related to the charging system will be inspected for continuity and integrity.
  5. Repair/Replacement: Depending on the diagnosis, this could involve replacing the charging port assembly, the onboard charger, or addressing a BMS-related issue.

Given that your Model 3 is a 2023 model, this issue should be covered under warranty.

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