2021 Tesla Model 3: Fuse Box Diagram & Amperage
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick Answer
The 2021 Tesla Model 3 has three main fuse box locations:
- Right-Side Kick Panel: Located in the passenger-side footwell, behind a trim panel.
- Underhood: Found under a cover near the front trunk (frunk).
- Rear Body Controller: Situated in the trunk, behind the carpet on the driver's side.
Right-Side Kick Panel Fuse Box
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 15A | Blue | Windshield Wipers |
| F2 | 10A | Red | Exterior Lights |
| F3 | 10A | Red | Steering Column Controls |
| F4 | 5A | Tan | Airbag System |
| F5 | 10A | Red | Infotainment System |
| F6 | 15A | Blue | Cigar Lighter / 12V Power Outlet |
| F7 | 20A | Yellow | Driver's Window |
| F8 | 20A | Yellow | Passenger Window |
| F9 | 20A | Yellow | Left Rear Window |
| F10 | 20A | Yellow | Right Rear Window |
| F11 | 10A | Red | Side Mirrors |
| F12 | 15A | Blue | Seat Heaters |
| F13 | 10A | Red | Interior Lights |
Underhood Fuse Box
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F20 | 40A | Green | Blower Motor |
| F21 | 30A | Green | A/C Compressor Clutch |
| F22 | 60A | Yellow | ABS Module |
| F23 | 40A | Green | Cooling Fan |
| F24 | 30A | Green | Power Steering |
| F25 | 25A | Natural | Headlight - Left |
| F26 | 25A | Natural | Headlight - Right |
Rear Body Controller Fuse Box
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F30 | 25A | Natural | Tail Lights / Park Lights |
| F31 | 15A | Blue | Brake Lights |
| F32 | 30A | Green | Rear Defroster |
| F33 | 20A | Yellow | Fuel Pump |
| F34 | 25A | Natural | Amplifier |
Note: Fuse numbers and protected circuits can vary by trim level and options. Always check the fuse box legend in your vehicle to confirm.
How to Test a Fuse
- Turn off the vehicle.
- Locate the fuse box and remove the cover.
- Find the suspect fuse. Use the diagram on the fuse box cover or your owner's manual.
- Remove the fuse. Use a fuse puller if available.
- Inspect the fuse. Look for a broken filament inside the plastic housing. If the filament is broken, the fuse is blown.
- Test with a multimeter (optional but recommended). Set your multimeter to the continuity setting. Touch the probes to each of the fuse's metal tabs. If the multimeter beeps or shows a reading of 0, the fuse is good. If it doesn't, the fuse is blown.
Common Blown Fuses on This Vehicle
- Cigar Lighter / 12V Power Outlet Fuse: This fuse often blows due to faulty phone chargers or other accessories. If the fuse is blown, first inspect the accessory you were using for any visible damage.
- Blower Motor Fuse: If your climate control fan stops working, the blower motor fuse is a likely culprit. This can sometimes be caused by a failing blower motor resistor or the motor itself.
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Before you pull a fuse on the 2021 Tesla Model 3
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2021 Tesla Model 3
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Tesla Model 3 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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