For most 2015 Scion tC models with halogen headlights, the low-beam bulb is H11 and the high-beam bulb is 9005 (HB3). Fog lights are typically H11 as well. If your car has HID or LED headlights, or if you’re in a market with a different trim, bulb types may differ. Use the verification steps below to confirm the exact size for your vehicle.
The 2015 Scion tC comes with variations by trim and region, and some builds may use different lighting configurations or upgrades. This guide covers the common halogen setup and explains how to verify the correct bulb size for your exact vehicle.
Headlights: Halogen configuration
The most typical configuration for 2015 Scion tC headlamps is halogen bulbs. The two primary functions require different bulbs.
Bulb sizes for halogen headlights (typical configuration):
- Low beam (dipped headlights): H11
- High beam: 9005 (HB3)
Note: Some vehicles may use HID or LED options instead of halogen bulbs. If your tC has HID or a non-standard setup, halogen bulb sizes may not apply. Always verify by checking the bulb housing, the current bulb labeling, or the owner's manual.
Fog lights
Fog light bulb sizes can vary by market and trim. The most common size for the 2015 Scion tC with halogen fogs is H11, but some versions use H16 depending on regional specifications.
Bulb sizes for fog lights (typical options):
- Fog lights: H11 (typical)
- Alternative in some markets: H16
As with headlights, check the exact part by inspecting the fog light bulb or consulting the owner's manual or dealer to confirm the correct size for your vehicle.
Special cases: HID headlights or LED replacements
Some 2015 Scion tC models, or aftermarket upgrades, may use HID or LED lighting. HID systems use xenon bulbs with a ballast, and common factory HID configurations differ from halogen bulbs. If your car uses HID (often labeled as D2S/D4S-type bulbs in the headlamp assembly), you will not use halogen H11 or 9005 bulbs. LED lighting is also not a simple halogen swap and may require compatible modules or ballast adjustments.
How to confirm the exact bulb type
Inspect the headlight or fog light assemblies, read the bulb markings, or consult the owner's manual for the precise bulb part number and type. If you’re unsure, contact a Scion/Toyota dealer or a reputable parts retailer and provide your VIN to ensure an exact match.
How to confirm the correct bulb size on your car
To avoid buying the wrong bulb, use these verification steps:
- Check the owner's manual under Lighting or Bulbs for the listed sizes for low beams, high beams, and fog lights.
- Remove the current bulb and read the markings on the base (for example, H11 or 9005).
- Inspect the headlight/fog light housing or refer to the service manual for your exact trim and market.
- If in doubt, ask a parts specialist or your dealer to confirm compatibility using your VIN.
Conclusion: Align the bulb sizes with your vehicle’s exact configuration to ensure proper fit and performance. Market and trim variations can cause differences, so verification is essential.
Summary
For the 2015 Scion tC with typical halogen headlights, expect low beams to be H11, high beams to be 9005 (HB3), and fog lights to be H11 (with some markets using H16). If your tC has HID or LED headlights, the bulb types will differ (e.g., D2S/D4S for HID) and halogen replacements won’t apply. Always verify with the owner’s manual or by inspecting the current bulbs to confirm the exact size for your specific vehicle, trim, and market.