why does my Tesla Model S Original (2012-2020) take so long to charge

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

508 words

Problem Statement

Learn how to diagnose and fix extended charging times in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle from the power source before performing inspections.
•Ensure the vehicle is in Park mode to avoid accidental movement.

Symptoms

•Charging time significantly exceeds manufacturer specifications
•Charger indicator shows slow progression
•Charging message remains on for extended periods
•Battery percentage increases at a reduced rate
•Potential overheating of the charging cable or connector
•Charge Port error message displayed in the vehicle's interface

Diagnostic Steps

1
Inspect the charging cable and connector for damage or wear.
2
Check the charging station or wall connector for proper functionality.
3
Verify the battery's state of health using the vehicle's diagnostic tools.
4
Scan for error codes using the Tesla service menu.
5
Confirm the charging settings in the vehicle’s interface are correctly configured.
6
Test the AC and DC charging ports for continuity and voltage output.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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

•Multimeter
•OBD-II scanner
•Electrical contact cleaner

Parts Required

•Charging cable (if damaged)
•Charging connector (if corroded or faulty)

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Symptoms

•Charging time significantly exceeds manufacturer specifications

•Charger indicator shows slow progression

•Charging message remains on for extended periods

•Battery percentage increases at a reduced rate

•Potential overheating of the charging cable or connector

•Charge Port error message displayed in the vehicle's interface

Diagnostic Steps

1
Inspect the charging cable and connector for damage or wear.
2
Check the charging station or wall connector for proper functionality.
3
Verify the battery's state of health using the vehicle's diagnostic tools.
4
Scan for error codes using the Tesla service menu.
5
Confirm the charging settings in the vehicle’s interface are correctly configured.
6
Test the AC and DC charging ports for continuity and voltage output.

Solution

1. Preparation

Gather tools: multimeter, OBD-II scanner, and cleaning supplies.
Ensure the vehicle is parked in a safe environment with adequate ventilation.
Disconnect the charging cable from the vehicle and wall outlet.

2. Inspect Charging Equipment

Sub-steps:
- Examine the charging cable for visible damage (cracks, frays).
- Check the connector pins for corrosion or dirt; clean them with electrical contact cleaner.
- Test the wall outlet with a multimeter to ensure it provides the correct voltage.

3. Verify Battery Health

Sub-steps:
- Access the vehicle’s service menu and navigate to the battery diagnostics.
- Note the state of health (SoH) and capacity retention.
- If the SoH is below 70%, consider contacting Tesla for a battery replacement.

4. Check Charging Settings

Sub-steps:
- Open the Tesla app or vehicle interface and review the charging settings.
- Ensure that the vehicle is set to charge at the maximum allowable current.
- Disable any scheduled charging if it is set to a lower current.

5. Test Charging Ports

Sub-steps:
- Use a multimeter to check the voltage output at the AC and DC ports.
- If any discrepancies are found, inspect the charging port for debris or damage.
- Reseat the connectors and check for any obstructions.