why does my Tesla Model S Plaid/Refresh (2021-present) battery die when parked for a few days

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

570 words

Problem Statement

Discover how to troubleshoot battery drain issues in Tesla Model S Plaid. Step-by-step guide to diagnose and fix battery discharge when parked.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' mode before performing any checks or adjustments to avoid unintended movement

Symptoms

•Battery drains significantly within a few days of inactivity
•"Battery Low" warning displayed on the dashboard
•Inability to connect to the vehicle via the mobile app
•Reduced range indicated on the display
•Possible malfunction of infotainment system upon startup

Diagnostic Steps

1
Check for any active apps or features that may be consuming power (e.g., Sentry Mode, Cabin Overheat Protection)
2
Inspect the vehicle settings to ensure that energy-saving features are enabled
3
Use the Tesla app to check the battery status and note any unusual drain patterns
4
Run a battery health check via the Tesla app or on the vehicle's touchscreen
5
Verify if any software updates are pending that may address battery management issues
6
Inspect for any physical issues such as damaged wiring or connectors that could cause parasitic draw

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 mobile app
•Vehicle touchscreen interface

Parts Required

•None specifically required for diagnosis or adjustment.

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check for any active apps or features that may be consuming power (e.g., Sentry Mode, Cabin Overheat Protection)
2
Inspect the vehicle settings to ensure that energy-saving features are enabled
3
Use the Tesla app to check the battery status and note any unusual drain patterns
4
Run a battery health check via the Tesla app or on the vehicle's touchscreen
5
Verify if any software updates are pending that may address battery management issues
6
Inspect for any physical issues such as damaged wiring or connectors that could cause parasitic draw

Solution

1. Preparation

Ensure the vehicle is parked in a safe location.
Gather necessary tools and equipment.
Ensure the vehicle is connected to the charger if needed.

2. Disable Unnecessary Features

Navigate to the vehicle settings on the touchscreen.
Disable Sentry Mode:
- Tap on the 'Controls' menu.
- Select 'Safety & Security'.
- Toggle off Sentry Mode.
Disable Cabin Overheat Protection:
- Go to 'Controls'.
- Select 'Climate'.
- Toggle off Cabin Overheat Protection.

3. Check Battery Management Settings

Access the 'Charging' menu.
Ensure that 'Scheduled Departure' is set if you will not be using the vehicle for an extended period.
Enable 'Energy Saving Mode' if available.

4. Update Software

Check for software updates:
- Go to 'Controls'.
- Select 'Software'.
- If an update is available, follow on-screen prompts to install.

5. Inspect Wiring and Connectors

If parasitic drain is suspected, visually inspect the battery and wiring:
- Open the frunk and check the battery connections for corrosion or damage.
- Inspect wiring harnesses for any signs of wear or damage.

6. Battery Health Check

Perform a battery health check:
- Go to 'Controls' > 'Service' > 'Battery Health'.
- Review the health status and take note of any alerts.