how to check the 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

486 words

Problem Statement

Learn how to check and replace fuses in your Tesla Model S (2012-2020) to resolve electrical issues. Step-by-step guide with diagnostic procedures.

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 starting any work on the electrical system.
•Handle fuses with care to avoid injury or damage to the vehicle components.

Symptoms

•Inoperative electrical components (e.g., lights, infotainment system)
•Malfunctioning charging system
•Warning messages related to electrical systems
•Loss of power to accessories
•Vehicle not responding to commands

Diagnostic Steps

1
Locate the fuse box by consulting the owner’s manual or checking under the dashboard and trunk area.
2
Visually inspect the fuse box for any blown fuses (look for broken wire or discoloration).
3
Use a multimeter to check continuity across each fuse to determine if they are functioning properly.
4
Reference the fuse diagram located inside the fuse box cover to identify which fuses correspond to specific components.
5
Replace any blown fuses with fuses of the same amperage rating.

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

Parts Required

•Replacement fuses (various amps as needed)

Related Faults

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Diagnostic Steps

1
Locate the fuse box by consulting the owner’s manual or checking under the dashboard and trunk area.
2
Visually inspect the fuse box for any blown fuses (look for broken wire or discoloration).
3
Use a multimeter to check continuity across each fuse to determine if they are functioning properly.
4
Reference the fuse diagram located inside the fuse box cover to identify which fuses correspond to specific components.
5
Replace any blown fuses with fuses of the same amperage rating.

Solution

1. Preparation

Gather necessary tools: a multimeter, fuse puller, and replacement fuses.
Ensure the vehicle is in "Park" and powered off to prevent electrical shock.

2. Locate and Access the Fuse Box

Open the front trunk (frunk) and remove the cover panel to access the fuse box.
Additionally, check under the dashboard on the driver's side for another fuse box.

3. Inspect Fuses

Visual Inspection:
- Remove the fuse cover and inspect each fuse for signs of damage (burnt or broken wire).
Electrical Testing:
- Using a multimeter, set it to the continuity setting.
- Remove each fuse and check for continuity by placing the probes on each end of the fuse.
- A continuous beep indicates a good fuse; no beep indicates a blown fuse.

4. Replace Blown Fuses

If a fuse is found to be blown, remove it using a fuse puller.
Select a replacement fuse with the same amperage rating (located on the fuse or in the manual).
Insert the new fuse into the same slot and ensure it is seated properly.

5. Reassemble and Test

Replace the fuse cover and any panels that were removed.
Power on the vehicle and check the functionality of the previously affected electrical components.