how to check the battery health of my Tesla Model 3 Original (2017-2023)

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

464 words

Problem Statement

Learn how to check the battery health of your Tesla Model 3 (2017-2023) with step-by-step diagnostic procedures and tips for optimal battery maintenance.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always follow Tesla's safety guidelines when handling electrical components.

Symptoms

•Decreased driving range compared to initial specifications
•Frequent warnings about low battery charge
•Longer charging times
•Inconsistent power delivery during acceleration
•Battery degradation observed in the Tesla app

Diagnostic Steps

1
Access the Tesla app or the vehicle's touchscreen to view battery metrics.
2
Check the battery's capacity percentage compared to the original capacity.
3
Look for any error messages or alerts related to battery health.
4
Use the vehicle's built-in diagnostics to check for any anomalies.
5
Monitor the battery temperature during charging and discharging cycles.

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

•Tesla app
•Vehicle touchscreen
•Charger

Parts Required

•None

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Diagnostic Steps

1
Access the Tesla app or the vehicle's touchscreen to view battery metrics.
2
Check the battery's capacity percentage compared to the original capacity.
3
Look for any error messages or alerts related to battery health.
4
Use the vehicle's built-in diagnostics to check for any anomalies.
5
Monitor the battery temperature during charging and discharging cycles.

Solution

1. Preparation

Tools Required: Tesla app, vehicle touchscreen, charger
Ensure that the vehicle is parked in a safe location and is turned on.
Make sure the vehicle is connected to a charger for accurate data.

2. Access Battery Information through Tesla App

Open the Tesla app on your mobile device.
Navigate to the 'Battery' section to view the current state of charge and health metrics.
Note any information regarding the battery's capacity and degradation.

3. Check Battery Health via Vehicle Touchscreen

On the vehicle's touchscreen, tap on 'Controls.'
Select 'Charging' to access detailed battery information.
Review the 'Battery Health' section to assess the current capacity and any alerts.

4. Conduct a Range Test

Fully charge the battery to 100% and note the mileage range indicated.
Drive the vehicle under normal conditions and track the distance until the battery reaches 20% charge.
Compare the actual range with the range displayed on the touchscreen to evaluate performance.

5. Monitor Battery Temperature

While charging, monitor the battery temperature displayed on the touchscreen.
Ensure it remains within the normal operating range (typically between 20°C to 60°C).
Look for any abnormal temperature readings that could indicate health issues.