2024 Tesla Model S Fuse Box Diagram & Amperage

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Quick answer

The 2024 Tesla Model S has a modern electrical architecture that differs significantly from traditional internal combustion engine (ICE) vehicles. While it does have physical fuses for its low-voltage (12V) system, many circuits are protected electronically by the vehicle's body controllers. These electronic fuses, or eFuses, can trip and reset without needing physical replacement.

Physical fuse boxes are found in three main locations:

• Under the Hood (Frunk): Located under a maintenance panel in the front trunk.
• Passenger Cabin: Located behind the right-hand side kick-panel, near the front passenger's footwell.
• Rear Trunk: Located behind an access panel in the rear cargo area.

Important Note: Tesla's design philosophy moves away from many traditional, user-serviceable fuses and relays found in other cars. Components like a "fuel pump," "starter relay," "ignition," or "A/C clutch" do not exist on a Model S, as it is a fully electric vehicle. The high-voltage battery system is separate and should only be serviced by qualified technicians.

Under-Hood (Frunk) Fuse Box

This fuse box primarily handles low-voltage components at the front of the vehicle. You will need to remove the frunk's rear maintenance panel to access it.

Note: Fuse numbers and circuits can vary slightly. Always confirm with the diagram on your vehicle's fuse box cover or the official Tesla service manual.

Passenger Cabin Fuse Box

This fuse box is located behind the passenger-side kick panel in the footwell. It protects most of the interior electronics and low-voltage convenience features.

Rear Trunk Fuse Box

This fuse box is typically found behind a small access panel on the side of the rear cargo area. It manages components located at the rear of the vehicle.

How to test a fuse

If a non-critical component like your 12V power outlet or interior lights stops working, a blown fuse is a likely culprit. Here’s how to check:

1. Turn the vehicle off. For a Tesla, ensure it is fully powered down.
2. Locate the correct fuse box based on the non-working component.
3. Remove the fuse box cover. You should see a diagram of the fuses and their functions printed on the inside of the cover.
4. Identify the suspect fuse. Use the diagram to find the fuse corresponding to the problematic circuit.
5. Remove the fuse. A plastic fuse puller tool is often included in the fuse box. If not, small needle-nose pliers will work—just be gentle.
6. Inspect the fuse. Hold the fuse up to the light. Inside the plastic housing is a small metal wire. If this wire is broken or melted, the fuse is blown and needs to be replaced.
7. Replace with an identical fuse. It is critical that you replace a blown fuse with a new one of the exact same amperage (Amp) rating. Using a higher-rated fuse can cause severe damage to the electrical system and create a fire hazard.

Common blown fuses on this vehicle

While Tesla's electrical system is robust, certain low-voltage fuses are more prone to blowing than others.

• 12V Power Socket (Cigar Lighter): This is the most common blown fuse in any vehicle. It is typically caused by a faulty or power-hungry device plugged into the outlet, like a cheap phone charger, an overloaded power inverter, or a tire inflator with a short.
• Blower Motor: If the main cabin fan for heat and A/C suddenly stops working on all speeds, check the blower motor fuse before assuming the motor itself has failed.

For many other issues, a "blown fuse" may not be the answer. If your main screen is black or a door controller stops responding, a simple "soft reset" of the vehicle (holding down both scroll wheels on the steering wheel) can often resolve the issue by resetting the electronic controllers and their internal eFuses.

Due to the complexity of the Model S electrical system, including its high-voltage components, any recurring electrical issues should be diagnosed by a professional. Do-it-yourself electrical work beyond checking simple low-voltage fuses is not recommended.

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