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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/my Tesla Model S has a hard time starting what's wrong

my Tesla Model S has a hard time starting what's wrong

Tesla Model S Plaid/Refresh (2021-present)

Severity: highDifficulty: medium1-2 hours
3 min read
420 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 fix starting issues in Tesla Model S. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instructions.

Component
Electrical
Repair Time
1-2 hours

Safety Warnings

  • ⚠Disconnect the main battery pack before working on electrical systems.
  • ⚠Ensure the vehicle is powered down and secure before starting repairs.

Symptoms

  • •Vehicle not responding to key fob
  • •Longer than usual time to power on
  • •Dashboard lights flickering or dim
  • •Error message on display regarding battery health
  • •Unresponsive touchscreen upon startup

Diagnostic Steps

  1. 1Check the 12V battery voltage using a multimeter to ensure it is within the proper range (12.4V or higher).
  2. 2Inspect the main battery pack for any visible damage or warning lights.
  3. 3Test the key fob battery to ensure it is functional.
  4. 4Perform a soft reset of the vehicle’s touchscreen by holding down the two scroll wheels on the steering wheel.
  5. 5Check for any software updates that may need to be installed.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Ensure the vehicle is in a safe location with the parking brake engaged.
  • Disconnect the main battery pack if necessary for safety.

2. Check and Replace 12V Battery

  1. Remove the frunk cover to access the 12V battery.
  2. Disconnect the negative terminal first, then the positive terminal using a socket set.
  3. Remove the old battery and replace it with a new one (ensure the new battery is at least 12.4V).
  4. Reconnect the positive terminal first, then the negative terminal.
  5. Replace the frunk cover securely.

3. Inspect and Reset Systems

  1. Inspect the main battery pack for any signs of damage or corrosion.
  2. If software updates are available, connect the vehicle to Wi-Fi and follow the instructions on the touchscreen to update.
  3. If issues persist, perform a factory reset of the vehicle’s settings through the touchscreen menu.

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
  • Socket set
  • Screwdriver set

Parts Required

  • New 12V battery
  • Key fob battery (if necessary)

Additional Information

Component

Electrical

Repair Time

1-2 hours

Difficulty

medium

Severity

high

Tools

3 items

Parts

2 items

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