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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to repair a Tesla Model S Original (2012-2020) faulty charger

how to repair a Tesla Model S Original (2012-2020) faulty charger

Tesla Model S Plaid/Refresh (2021-present)

Severity: highDifficulty: hard2-4 hours
3 min read
537 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and repair the charging system issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostics, and solutions.

Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the high-voltage battery before working on the charging system.
  • ⚠Allow all components to cool down before handling.

Symptoms

  • •Charging port indicator light not illuminating
  • •Inability to connect to charging stations
  • •Error messages displayed on the vehicle’s dashboard
  • •Extremely slow charging rates
  • •Intermittent charging interruptions

Diagnostic Steps

  1. 1Inspect the charging cable for visible damage or wear.
  2. 2Test the charging station using a different Tesla vehicle to confirm station functionality.
  3. 3Use a diagnostic tool to check for error codes related to the charging system.
  4. 4Verify the voltage and amperage output at the charging port using a multimeter.
  5. 5Check the vehicle’s charging port for debris, corrosion, or physical damage.
  6. 6Inspect the onboard charger for any signs of overheating or malfunction.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Safety first: Disconnect the vehicle from any power source and ensure the vehicle is in a safe location.
  • Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, cleaning supplies.

2. Inspect and Clean Charging Port

  • Remove any debris or contamination from the charging port using a soft cloth.
  • If corrosion is present, use a contact cleaner designed for electronics and a soft brush to clean the area.

3. Replace Battery Charger Assembly (if necessary)

  1. Remove Underbody Shield

    • Use a socket set to remove bolts securing the underbody shield.
    • Carefully lower and remove the shield to access the charger.
  2. Disconnect Power

    • Disconnect the high-voltage battery connectors to ensure safety.
    • Use safety gloves and goggles.
  3. Remove the Charger

    • Locate the charger assembly, which is typically secured by bolts.
    • Disconnect the wiring harness from the charger.
    • Remove bolts holding the charger in place using a torque wrench to ensure proper removal.
  4. Install New Charger

    • Position the new charger in place and secure it with bolts to the manufacturer’s torque specifications.
    • Reconnect the wiring harness ensuring no pins are bent or damaged.

4. Reassemble and Test

  • Reattach the underbody shield and secure with bolts.
  • Reconnect the high-voltage battery connectors.
  • Reconnect the vehicle to the power source and check for proper functioning of the charging system.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Multimeter
  • Socket set
  • Torque wrench
  • Cleaning supplies

Parts Required

  • Replacement battery charger assembly (if defective)

Additional Information

Component

Electrical

Repair Time

2-4 hours

Difficulty

hard

Severity

high

Tools

5 items

Parts

1 items

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