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My 2019 Model 3 is charging super slow or stopping mid-charge!

0

Chris P. · rep 0 · May 25, 4:02 AM · 1 replies · solved · Question

Vehicle: 2019 Tesla Model 3 Long Range

Hey everyone, hoping someone can help me out. My 2019 Tesla Model 3 Long Range has been acting weird with charging lately. Sometimes it charges incredibly slow, like half the speed it used to, even on a Supercharger. Other times, it just stops charging completely after an hour or so, and I get a notification on my phone.

I've tried different Superchargers and even my home Wall Connector, but the issue persists. It's really frustrating, especially when I'm on a road trip. The car has about 60,000 miles on it.

Is this a known issue? Could it be the charging port, the onboard charger, or something else entirely? Any advice on what to check or if I need to schedule service would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:02 AM

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ClearTheCode admin answer:

Slow or interrupted charging on a Tesla Model 3 can stem from several electrical and electronic components. Here's a breakdown:

  1. Check Charging Equipment:

    • Cables and Adapters: Inspect your charging cables (Supercharger, J1772 adapter, Wall Connector cable) for any visible damage, kinks, or bent pins. A faulty cable can restrict power flow.
    • Charging Port: Ensure the vehicle's charging port is clean and free of debris. Use compressed air if necessary, but avoid liquids.

  2. Software & Firmware:

    • Reboot Vehicle: Perform a soft reboot of your Tesla (hold both scroll wheels on the steering wheel until the screen goes black and the Tesla logo reappears). Sometimes a software glitch can affect charging protocols.
    • Check for Updates: Ensure your vehicle's software is up to date. Tesla frequently releases updates that include charging improvements and bug fixes.

  3. Potential Hardware Issues (When to See a Shop):

    • Onboard Charger (OBC): If the issue occurs consistently across different charging stations and cables, the onboard charger in your vehicle might be failing. This component converts AC power to DC for the battery.
    • Battery Management System (BMS): The BMS monitors battery health and temperature. If it detects an anomaly, it might limit or halt charging to protect the battery. Overheating during charging can also trigger this.
    • Charging Port Assembly: Internal damage or corrosion within the vehicle's charging port could cause intermittent connectivity or poor communication with the charging station.
    • High Voltage Battery Pack: While less common for intermittent issues, an internal fault within the main battery pack could also affect charging.

Diagnostics: If a Tesla service center pulls codes, they might see:

  • P0D2A: EVSE (Electric Vehicle Supply Equipment) Communication Error
  • P0D2F: Battery Charger Control Module Performance

If basic troubleshooting doesn't resolve the problem, especially if you're experiencing consistent slow charging or complete stoppages, it's crucial to schedule a service appointment with Tesla. They have specialized diagnostic tools to pinpoint the exact electrical component causing the issue and perform necessary repairs or replacements.

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