2024 Tesla Model Y Bulb Sizes (Headlight, Tail, Fog)

As an ASE-certified master technician, I regularly field questions from electric vehicle owners about basic maintenance. When it comes to the 2024 Tesla Model Y, the conversation about "bulb replacement" is entirely different from traditional internal combustion vehicles. Tesla has fully embraced modern lighting technology, meaning the 2024 Model Y is equipped with factory LED lighting across the board.

Whether you have a Long Range, Performance, or Rear-Wheel Drive trim, your Model Y features integrated LED boards rather than traditional incandescent or halogen bulbs. Below is the comprehensive guide to understanding your Model Y’s lighting system.

Quick reference

Since the 2024 Tesla Model Y utilizes integrated LED assemblies, you will not find traditional bulb sizes (like H11, 9005, or 194) for this vehicle. If a light goes out, the entire housing or LED module typically requires replacement.

Note: 2024 Model Y vehicles utilize advanced "Matrix" LED headlights globally, though adaptive features may be software-locked depending on regional regulations.

LED vs halogen upgrade considerations

For most traditional vehicles, this section covers CANBUS adapters, hyper-flashing, and beam patterns when upgrading from halogen to LED. However, because the 2024 Model Y is fully LED from the factory, there are no halogen bulbs to upgrade.

If you are looking to modify your Tesla's lighting, you will likely be looking at complete aftermarket housing replacements (such as sequential taillights) or custom interior LED color modules.

• CANBUS / Firmware Errors: Teslas are essentially driving computers. If you install aftermarket taillight assemblies or illuminated exterior emblems that draw incorrect voltage, the vehicle's computer will detect the anomaly and display a fault code on your center screen.
• Wiring Modifications: Splicing into factory wiring is highly discouraged on a Tesla, as it can easily void your electrical warranty and trigger high-voltage safety system warnings. Always use plug-and-play adapter harnesses designed specifically for the Model Y.

How to replace each bulb

Because you cannot simply unscrew a burnt-out bulb on the 2024 Model Y, "bulb replacement" actually means "assembly replacement." Here is a brief overview of what is involved if a component fails out of warranty:

• Headlights (Low, High, DRL, Front Turn): If a front headlight module fails, the entire front bumper cover and the frunk tub must be removed to access the headlight mounting bolts. It is a time-consuming process that usually requires a software recalibration via the Tesla service menu afterward.
• Fog Lights: Similar to the headlights, replacing the lower fog light and turn signal combo assemblies requires dropping the front aero shield and bumper fascia.
• Tail Lights (Brake, Turn, Tail, Reverse): The rear taillights are split into two pieces (outer body and inner liftgate). To replace them, you must pry back the trunk interior trim panels. They are held in place by a few 8mm nuts. Unplug the harness, swap the assembly, and re-secure the nuts carefully to avoid cracking the new housing.
• Side Markers (Autopilot Cameras): The side turn signals are integrated into the fender camera modules. These simply pop out of the fender with careful prying, but replacing them requires a camera calibration drive afterward.
• Interior Dome/Map Lights: The interior LEDs are soldered onto a circuit board inside the overhead console. Replacing them involves replacing the entire console piece.

Common lighting issues for this generation

While LED lights are designed to last the lifetime of the vehicle, the 2024 Model Y does experience a few common lighting quirks:

1. Taillight Condensation: This is arguably the most common issue across the Model Y generation. Moisture builds up inside the rear taillight housings after heavy rain or car washes. While a light mist that burns off is considered normal by Tesla, heavy pooling water is a defect and warrants a warranty replacement of the assembly.
2. Puddle Light Failure: The lights under the doors (puddle lights) are known to occasionally short out or have their plastic lenses shatter from door impacts. Fortunately, these are inexpensive and easily pop out with a flathead screwdriver for a quick replacement.
3. Headlight Firmware Glitches: Occasionally, an over-the-air (OTA) update may cause a headlight to go out of sync or throw a warning message on the dash. A simple scroll-wheel reboot or software reinstall usually clears this false positive.

Whether you need to replace a damaged taillight assembly or address a persistent condensation issue, always ensure the work is done safely, especially when working around an EV's electrical systems.

Find a trusted shop on Repairius.