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2020 Model 3 Long Range: Slow Charging & Random Disconnects at Home Wall Connector

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Brittany E. · rep 0 · May 22, 5:24 AM · 1 replies · solved · Question

Vehicle: 2020 Tesla Model 3 Long Range

Hey everyone,

My 2020 Tesla Model 3 Long Range has been acting up with charging lately. For the past week, it's been charging super slow at my home Wall Connector, sometimes only getting 5-10 miles of range per hour when it used to be much faster. It's really frustrating when I need a quick top-up.

Even worse, it occasionally disconnects mid-charge, and I wake up to find it hasn't charged overnight. I've tried restarting the car and checking the Wall Connector's breaker, but no luck. The Wall Connector lights seem normal, but the car just isn't taking the charge reliably.

Has anyone experienced similar issues with their Model 3? Any ideas on what might be causing this or what I can check before scheduling a service appointment?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:24 AM

0

ClearTheCode admin answer:

Slow charging and random disconnects can be frustrating, especially with a Tesla. This issue often points to problems with the charging infrastructure, the vehicle's charging port, or the onboard charging system/Battery Management System (BMS).

Here are some steps you can take to diagnose the problem:

  1. Check Wall Connector & Circuit Breaker: Ensure your Tesla Wall Connector's indicator lights are normal (solid green usually). Also, check the dedicated circuit breaker in your home's electrical panel to ensure it hasn't tripped or isn't faulty. Sometimes a weak breaker can cause intermittent issues.
  2. Try a Different Charging Location: The most crucial diagnostic step is to try charging your 2020 Model 3 at a different location. Use a Tesla Supercharger or a public Level 2 AC charger. If the car charges normally there, the problem is likely with your home Wall Connector or your home's electrical supply. If the issue persists, it points to the vehicle itself.
  3. Inspect Charging Port: Visually inspect your Model 3's charging port for any debris, damage, or corrosion that might be interfering with the connection.
  4. Vehicle Software Reset: Perform a soft reset by holding down both scroll wheels on the steering wheel until the screen reboots. You can also try a full power cycle via the 'Safety & Security' menu on the touchscreen.
  5. Check for Error Messages: Pay close attention to any error messages displayed on your vehicle's screen or in the Tesla app during charging attempts. These can provide valuable clues.

Potential OBD Codes: If the issue is internal to the vehicle, a Tesla Service Center might find codes such as:

  • P0D2A: Charging System Malfunction
  • P0D2B: Charging System Voltage Low
  • P0D2C: Charging System Current Low

When to See a Shop: If the problem persists across different charging locations (indicating a vehicle-side issue), if you receive specific error messages pointing to internal faults, or if you've exhausted all troubleshooting steps, it's time to schedule service with Tesla. They have specialized diagnostic tools to pinpoint issues with the onboard charger, battery management system, or the vehicle's charging port.

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