2022 Tesla Model S Fuse Box Diagram & Amperage

As an ASE-certified master technician who has worked on the evolving landscape of electric vehicles, I get a lot of questions about the electrical architecture of modern Teslas. The 2022 Tesla Model S (part of the "Palladium" refresh) is an engineering marvel. Unlike traditional gas-powered cars that rely heavily on dozens of physical blade fuses, the 2022 Model S utilizes a 15V lithium-ion low-voltage system and relies heavily on digital "e-fuses" within its vehicle controllers (VCFRONT, VCLEFT, VCRIGHT).

However, physical fuses and fusible links are still used for primary power distribution, high-draw circuits, and legacy component protection. Below is a comprehensive guide to the physical fuse locations, amperages, and circuits for the 2022 Tesla Model S.

Disclaimer: Tesla frequently updates their vehicle wiring and electronic architecture via mid-year production changes. The information below represents the most common configuration for this generation. Always verify against the printed legend on your fuse box lid or within your specific vehicle's digital service manual before replacing any components.

Quick Answer

If you are looking for the physical fuse boxes on your 2022 Tesla Model S, they are located in the following areas:

1. Under-Hood (Front Trunk / Frunk) Fuse Box: Located beneath the plastic maintenance cowl cover near the windshield wiper assembly and the 15V low-voltage battery.
2. Cabin (Passenger Footwell) Fuse Box: Located inside the cabin, behind the right-side (passenger) kick panel / glovebox area.
3. High Voltage / Rear Pyro Fuse: Located under the rear seat / cargo floor area on the main high-voltage battery pack (Note: This is a pyrotechnic disconnect fuse for emergencies and should only be serviced by certified high-voltage technicians).

Under-Hood (Frunk) Fuse Box Diagram

This primary distribution box handles the high-amperage systems, cooling components, and front-end lighting. You will need to remove the plastic beauty covers in the frunk to access this box.

Note: Many powertrain components like the "fuel pump" (which does not exist in an EV) or starter relay are replaced by direct high-voltage inverter contactors.

Cabin (Passenger Footwell) Fuse Box Diagram

This fuse box manages interior accessories, safety restraints, and convenience features. Access it by pulling back the carpeted trim piece below the passenger side glovebox.

Note: The 2022 Model S does not have a traditional trailer brake controller fuse installed from the factory, as heavy towing is generally not supported natively without an aftermarket inline fuse setup.

How to test a fuse

Testing a physical fuse in a Tesla is the same as in any standard vehicle, but extra caution is required to avoid touching any orange high-voltage cables.

1. Visual Inspection: Pull the fuse out using a pair of fuse pullers or needle-nose pliers. Look at the U-shaped metal wire inside the translucent plastic casing. If the wire is broken or scorched, the fuse has blown.
2. Use a Multimeter: Set your digital multimeter to the "Continuity" or "Ohms" setting. Touch one probe to each metal leg of the fuse. If you hear a beep or see a reading close to 0.00 Ohms, the fuse is good. If it reads "OL" (Open Line), the fuse is dead.
3. Use a Test Light: Ground your test light to a solid bare metal chassis point. Turn the vehicle "On" (so the low voltage system is active). Touch the test light probe to the tiny metal test points exposed on the top of the fuse while it is still plugged in. If the light illuminates on both sides of the fuse, it is good. If it lights up on one side but not the other, the fuse is blown.

Common blown fuses on this vehicle

While the 2022 Model S relies heavily on resetting e-fuses (which simply require a vehicle reboot via the steering wheel scroll wheels or powering down from the touch screen), physical fuses can still blow. Here is what to check first:

1. 12V/15V Power Outlet (Fuse F51) This is the most common fuse to blow on the Model S. Owners frequently plug in high-draw devices like aftermarket tire inflators, high-wattage laptops, or faulty phone chargers into the center console "cigar lighter" outlet. If your power outlet goes dead, always check F51 first.

2. Blower Motor (Fuse F2) If the cabin completely stops blowing air but the touchscreen indicates the climate control is on, the HVAC blower motor fuse might be the culprit. A blocked cabin air filter or a failing blower motor bearing can cause excess amperage draw, popping the 40A fuse to protect the vehicle's low-voltage wiring. Check your cabin filter condition if this fuse blows.

3. MCU / Infotainment Power (Fuse F7) If your main central touchscreen goes entirely black and a standard two-button scroll wheel reset does not bring it back to life, the primary low-voltage power supply fuse to the Media Control Unit may have blown. This is rare but can happen during extreme temperature fluctuations or software update anomalies that cause power spikes.

If you are dealing with persistent electrical issues, blowing the same fuse repeatedly, or suspect a problem with your vehicle's e-fuse controllers, do not attempt to bypass the fuse with wire or a higher-amperage rating. This can cause catastrophic wire melting or a vehicle fire.

Find a trusted shop on Repairius.