2024 Tesla Model 3 Fuse Box Diagram & Amperage

Quick Answer

The 2024 Tesla Model 3 features multiple fuse box locations to protect its advanced electrical systems. You'll find fuse boxes in the following locations:

• Front Under-Hood Fuse Box: Located in the frunk (front trunk) area, typically on the passenger side.
• Cabin (Dash) Fuse Box: Situated behind the passenger side kick panel in the cabin.
• Rear (Trunk/Cargo) Fuse Box: Found in the trunk, often on the right-hand side behind a trim panel.

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Front Under-Hood Fuse Box

The under-hood fuse box in your 2024 Tesla Model 3 primarily houses fuses for critical powertrain components, high-current systems, and some front-end accessories. Always refer to the fuse legend inside the lid of your specific vehicle, as configurations can vary slightly due to trim levels or production changes.

Fuse #	Amp	Color	Circuit / Component Protected
F1	20A	Yellow	Powertrain Control Module (PCM)/ECM (Partial)
F2	15A	Blue	Front Motor Control (Partial)
F3	10A	Red	Headlight - Left Low Beam
F4	10A	Red	Headlight - Right Low Beam
F5	7.5A	Brown	Headlight - Left High Beam
F6	7.5A	Brown	Headlight - Right High Beam
F7	15A	Blue	Fog Lights (if equipped)
F8	25A	Clear	ABS Pump Motor
F9	10A	Red	ABS Valve Solenoids
F10	30A	Green	Blower Motor (HVAC)
F11	10A	Red	A/C Compressor Clutch
F12	5A	Tan	Ignition System (Partial)
F13	20A	Yellow	Cooling Fan (Main)
F14	20A	Yellow	Power Steering Control Module (Partial)
F15	15A	Blue	Horn

Relay Locations (Front Under-Hood):

• R1 (Starter Relay): While Tesla Model 3 vehicles use an electric powertrain, this relay typically controls 12V system pre-charge or auxiliary power to mimic traditional "starter" functions. Consult your vehicle specific manual for exact function.
• R2 (Cooling Fan Relay): Controls the main cooling fan for the battery and powertrain.
• R3 (Horn Relay): Activates the vehicle's horn.
• R4 (Headlight Relay): Controls the main headlight circuit.

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Cabin (Dash) Fuse Box

The cabin fuse box, located behind the passenger kick panel, protects various interior electrical components, infotainment systems, convenience features, and some safety systems.

Fuse #	Amp	Color	Circuit / Component Protected
F16	10A	Red	Radio/Infotainment System
F17	15A	Blue	12V Power Outlet / Cigar Lighter (Front)
F18	5A	Tan	USB Ports (Front)
F19	7.5A	Brown	Instrument Cluster / Digital Display
F20	10A	Red	Airbag Control Module (Partial)
F21	5A	Tan	Supplemental Restraint System (SRS) Sensors
F22	15A	Blue	Power Window - Driver Side
F23	15A	Blue	Power Window - Passenger Side
F24	7.5A	Brown	Wipers (Front)
F25	10A	Red	Interior Lighting
F26	5A	Tan	HVAC Control Module
F27	10A	Red	Seat Heaters (Front - Partial)
F28	20A	Yellow	Door Locks
F29	5A	Tan	Keyless Entry Module
F30	7.5A	Brown	Mirrors (Power/Heated)

Relay Locations (Cabin):

• R5 (Accessory Relay): Controls power to various interior accessories when the vehicle is "on."
• R6 (Power Window Relay): Supplies power to the window motors.

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Rear (Trunk/Cargo) Fuse Box

This fuse box typically handles circuits for the rear of the vehicle, including tail lights, rear power outlets, charging port systems, and specific components related to the rear motor and high-voltage battery management.

Fuse #	Amp	Color	Circuit / Component Protected
F31	10A	Red	Tail Lights / Park Lights (Left)
F32	10A	Red	Tail Lights / Park Lights (Right)
F33	7.5A	Brown	Brake Lights
F34	15A	Blue	Reverse Lights
F35	20A	Yellow	Fuel Pump (HVAC Heat Pump System - if applicable for thermal management)
F36	15A	Blue	12V Power Outlet / Cigar Lighter (Trunk)
F37	10A	Red	USB Ports (Rear)
F38	5A	Tan	Rear Motor Control (Partial)
F39	25A	Clear	Rear Defrost
F40	20A	Yellow	Trailer Brake Controller (if equipped)
F41	10A	Red	Charging Port Latch
F42	7.5A	Brown	High Voltage Battery Management System (Partial)
F43	15A	Blue	Seat Heaters (Rear - Partial)

Relay Locations (Rear):

• R7 (Tail Light Relay): Controls power to the rear tail and park lights.
• R8 (Rear Defrost Relay): Activates the rear window defroster.
• R9 (Trailer Power Relay): Provides power to the trailer connector (if equipped).

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How to Test a Fuse

Testing a fuse is a straightforward process that can help diagnose electrical issues. Here's how:

1. Safety First: Ensure the vehicle is off and the key (if applicable) is removed. For electric vehicles like the Model 3, ensure the vehicle is powered down and in service mode if possible, and always exercise caution around electrical components.
2. Locate the Fuse: Refer to the fuse box diagram (usually under the lid of the fuse box) and find the suspected fuse.
3. Remove the Fuse: Use the fuse puller provided in some fuse boxes, or a pair of needle-nose pliers, to carefully pull the fuse straight out.
4. Visually Inspect: Hold the fuse up to the light. A good fuse will have an unbroken metal wire or strip inside. If it's blown, the wire will be broken or melted.
5. Use a Multimeter (for a more accurate test):
   • Set your multimeter to the continuity or ohms setting.
   • Touch one probe to each metal blade of the fuse.
   • A good fuse will show continuity (a beep or a reading close to zero ohms). A blown fuse will show no continuity or an open circuit (OL).
6. Replace the Fuse: If the fuse is blown, replace it with a new fuse of the exact same amperage rating and type. Using a fuse with a higher amperage can cause severe damage to your vehicle's electrical system or even a fire.

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Common Blown Fuses on This Vehicle

While specific failures can vary, some fuses tend to blow more commonly due to regular use or minor electrical surges. On a 2024 Tesla Model 3, you might frequently encounter issues with fuses related to:

• 12V Power Outlets/Cigar Lighters: These are often overloaded by accessories plugged in, such as phone chargers, portable air compressors, or even faulty electronics. If your 12V outlet isn't working, check F17 (Cabin) and F36 (Rear).
• Infotainment/Radio: While robust, software glitches or accessory conflicts can sometimes trip the fuse. If your screen or audio system is unresponsive, check F16 (Cabin).
• Headlights/Tail Lights: Although modern LEDs are very reliable, issues with wiring, moisture ingress, or external damage could potentially cause a fuse to blow. Check F3, F4, F5, F6 (Under-Hood) for headlights and F31, F32, F33, F34 (Rear) for tail/brake lights.
• Blower Motor: A failing blower motor or an obstruction in the HVAC system can draw excessive current and blow its fuse. If your fan isn't working, check F10 (Under-Hood).

What to Check First:

Before diving deep into diagnostics, consider what happened leading up to the electrical issue. Did you plug in a new device? Did you recently hit a pothole or experience a bump? Start by checking the fuse directly related to the affected component.

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