For most 2015 Highlanders with halogen headlights, the bulbs are H11 for the low beams and 9005 for the high beams, with H11 also used for fog lights. If your Highlander has factory HID headlights, the system uses xenon bulbs (D4S) with a ballast. Always verify by checking your owner's manual or inspecting the bulb sockets, as trim and options can vary.
Bulb sizes by headlight type
Identify your headlight configuration to determine the correct bulb sizes. Halogen systems are the most common on mid-level trims, while higher-end trims may feature HID projector headlights. The following lists cover the typical configurations you are likely to encounter.
Halogen headlights
The majority of 2015 Highlanders with halogen headlights use separate bulbs for low and high beams, and most trims also share the same size for fog lights.
- Low beam: H11
- High beam: 9005 (HB3)
- Fog lights: H11 (on most trims)
Halogen setups are the most common; if your Highlander uses these, you can replace with standard H11 and 9005 bulbs from automotive retailers or online stores.
Xenon/HID headlights (factory)
Some Highlander trims feature factory HID headlights; these use xenon bulbs that require ballasts. This is not replaced as a simple "bulb swap" like halogen bulbs.
- Bulb type: D4S (with ballast)
If your vehicle has HID headlights, replacement involves the HID bulb with ballast or a ballast assembly; consult the owner's manual or a Toyota dealer for exact parts and procedures.
What to check before buying
To ensure you get the correct bulb, verify the exact bulb size by one of the following methods:
- Check the owner’s manual or the bulb replacement label on the inside of the headlight cover.
- Inspect the existing bulb for stamped size codes (e.g., H11, 9005, etc.).
- Consult a dealer with your Vehicle Identification Number (VIN) for the exact specification.
Taking these steps helps avoid ordering the wrong size and ensures compatibility with the wiring harness and ballast (if equipped).
Summary
In summary, most 2015 Toyota Highlanders with halogen headlights use H11 for low beams and 9005 for high beams, with H11 also used for fog lights. Trims equipped with factory HID headlights use D4S xenon bulbs with a ballast. Always double-check your specific vehicle’s manual or markings on the bulb housing to confirm the exact size for your trim and options.