how to check for blown fuses in my Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

529 words

Problem Statement

Learn how to check for blown fuses in your Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is powered off before working on electrical components.
•Handle fuses carefully to avoid electrical shock or damage to the vehicle's electrical system.

Symptoms

•Electrical components not functioning (e.g., lights, infotainment system)
•Warning messages on the dashboard
•Reduced power to certain systems
•Inability to charge the vehicle
•Non-responsive accessories (e.g., power windows, door locks)

Diagnostic Steps

1
Locate the fuse box: Identify the locations of the fuse boxes in the Tesla Model S, which are typically found under the front trunk and in the cabin.
2
Access the fuse box: Open the front trunk and/or the cabin to gain access to the respective fuse boxes.
3
Identify the fuses: Refer to the owner's manual or the fuse box cover to identify which fuses correlate to the non-functioning components.
4
Visual inspection: Examine the fuses visually for any signs of damage, such as a broken wire or discoloration.
5
Test with a multimeter: Use a multimeter to check for continuity on the fuses identified as suspect to confirm if they are blown.

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
•Fuse puller
•Needle-nose pliers

Parts Required

•Replacement fuses (appropriate amperage for the vehicle)

Related Faults

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Diagnostic Steps

1
Locate the fuse box: Identify the locations of the fuse boxes in the Tesla Model S, which are typically found under the front trunk and in the cabin.
2
Access the fuse box: Open the front trunk and/or the cabin to gain access to the respective fuse boxes.
3
Identify the fuses: Refer to the owner's manual or the fuse box cover to identify which fuses correlate to the non-functioning components.
4
Visual inspection: Examine the fuses visually for any signs of damage, such as a broken wire or discoloration.
5
Test with a multimeter: Use a multimeter to check for continuity on the fuses identified as suspect to confirm if they are blown.

Solution

1. Preparation

Gather necessary tools: multimeter, fuse puller, or needle-nose pliers.
Ensure the vehicle is turned off and parked in a safe location.

2. Access the Fuse Box

Front Trunk Fuse Box:
1. Open the front trunk.
2. Locate the fuse box cover and gently pull it off to access the fuses.
Cabin Fuse Box:
1. Open the driver's side door.
2. Remove the cover panel located on the left side of the dashboard to access the cabin fuse box.

3. Inspect and Test Fuses

Use a fuse puller or needle-nose pliers to carefully remove the fuses you suspect might be blown.
Visual Inspection: Check each fuse for a broken filament or blackened appearance.
Multimeter Testing:
1. Set the multimeter to the continuity setting.
2. Touch the probes to each end of the fuse. A continuous beep or reading indicates the fuse is intact; no sound or reading indicates a blown fuse.

4. Replace Blown Fuses

If a fuse is blown, replace it with a new fuse of the same amperage rating. Ensure you have the correct type (e.g., blade fuse).
Reinstallation:
1. Insert the new fuse into its slot.
2. Reattach the fuse box cover securely.

5. Final Check

Recheck all electrical components that were previously malfunctioning to ensure they are now functional.