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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why does my Tesla Model S battery drain overnight when parked

why does my Tesla Model S battery drain overnight when parked

Tesla Model S Plaid/Refresh (2021-present)

Severity: mediumDifficulty: medium1-2 hours
3 min read
454 words

Problem Statement

Discover how to diagnose and resolve battery drain issues overnight in your Tesla Model S. Step-by-step guide with diagnostic procedures and solutions.

Component
Electrical
Repair Time
1-2 hours

Safety Warnings

  • ⚠Ensure the vehicle is in park and on a flat surface before performing any diagnostics or updates.

Symptoms

  • •Battery percentage decreases significantly overnight
  • •No active apps or features running during the drain period
  • •Vampire drain reported in vehicle settings
  • •Inability to maintain charge for expected duration when parked
  • •Occasional alerts or notifications from the vehicle regarding low battery

Diagnostic Steps

  1. 1Check the vehicle's software version and ensure it is up to date.
  2. 2Inspect for any scheduled charging settings that may affect battery management.
  3. 3Review energy usage statistics in the Tesla app for abnormal activity.
  4. 4Examine whether any third-party applications are causing excessive battery drain.
  5. 5Perform a battery health check through the Tesla service menu.
  6. 6Monitor for any unusual vehicle behavior or notifications while parked.

Solution

Solution

1. Preparation

  • Gather necessary tools and materials for inspection.
  • Ensure the vehicle is in a secure, well-ventilated area.
  • Tools Required: Tesla mobile app, OBD-II scanner (if needed for diagnostics).

2. Update Software

  • Connect the vehicle to Wi-Fi.
  • Navigate to the software update section on the touchscreen.
  • Follow prompts to install any available updates.
  • Restart the vehicle after installation is complete.

3. Check Scheduled Charging and Features

  • Access the vehicle settings through the touchscreen.
  • Disable any scheduled charging or preconditioning features if not needed.
  • Confirm that "Sentry Mode" and "Dashcam" features are off if not in use.

4. Inspect Battery Health

  • Open the Tesla app and select 'Service' to initiate a battery health check.
  • If battery capacity is notably below optimal levels, contact Tesla service for evaluation.
  • Consider replacing the battery if it is significantly degraded.

5. Disable Third-Party Apps

  • Review any third-party applications connected to your vehicle.
  • Uninstall or disable any apps that may be causing excessive energy drain.
  • Monitor the vehicle's battery performance over the next few days.

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
  • OBD-II scanner (if needed for diagnostics)

Parts Required

  • None required for this diagnostic and solution process.

Additional Information

Component

Electrical

Repair Time

1-2 hours

Difficulty

medium

Severity

medium

Tools

2 items

Parts

1 items

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