A 2015 Subaru headlight bulb can usually be replaced without replacing the entire assembly. In most trims, you’ll access the bulb from the engine bay or, if needed, through the wheel well or by removing a duct or battery. The process involves unplugging the connector, releasing a retaining mechanism, swapping in a new bulb, and testing before closing up. This guide lays out practical steps you can follow for common Subaru configurations.
Bulb types and access points
2015 Subarus vary by model and trim, but several configurations are common. Knowing the right bulb type and where to reach it helps you avoid damage and install the correct replacement.
- Low-beam bulbs are typically H11 on many 2015 Subaru models.
- High-beam bulbs are commonly 9005 (HB3) on models with separate high beams.
- Some trims may use HID or LED headlights with non-replaceable bulbs or require different service steps; always verify the exact bulb type for your vehicle in the owner's manual or on the bulb label behind the headlight.
Consult your owner’s manual or the back of the headlight housing label for the precise bulb specification for your exact model and trim. If you encounter an HID or LED setup, the replacement approach can differ significantly and may require professional service.
Tools and safety
Gather these basics before you start to ensure a smooth, safe bulb swap. A well-prepared toolkit reduces the risk of damage to the headlight assembly or bulb.
- Replacement bulb of the correct type (e.g., H11 for low beam, 9005 for high beam, per your model)
- Clean gloves or a clean cloth to handle the bulb (to avoid oil from your skin on the glass)
- Flathead screwdriver or socket wrench (only if needed to access ducts or fasteners)
- Flashlight or work light for visibility
- Owner’s manual or a smartphone with the vehicle’s bulb guide for reference
Safety tip: Ensure the vehicle is powered off, the keys are out of the ignition, and the headlights are off before starting. If you’ve been driving, allow the engine and headlight components to cool to avoid burns.
Step-by-step replacement
Follow these steps to replace the headlight bulb on most 2015 Subarus. If your model requires different access, adapt accordingly and consult the manual.
- Park the car on a level surface, engage the parking brake, and open the hood. Turn off the headlights if they are on and remove the ignition key.
- Locate the back of the headlight assembly. If a dust cap is present, remove it to expose the bulb housing. Some models require removing a plastic air intake duct or moving the battery to gain access; do so if necessary and follow the vehicle’s service notes.
- Disconnect the electrical connector from the bulb by firmly pulling it straight off the bulb’s connector. Do not yank on the wires; grip the connector.
- Release the bulb restraint: this may be a retaining clip, a twist-and-lock ring, or a simple push-and-turn retainer. Release or rotate it to free the bulb.
- Carefully pull the old bulb straight out. Avoid touching the glass with bare fingers; if you do touch it, wipe the glass with a clean alcohol pad or replace the bulb.
- Prepare the new bulb, aligning any notches or tabs. Insert the new bulb, ensuring it seats fully and the alignment markings match.
- Reattach the electrical connector to the new bulb. Reinstall the retaining mechanism and any dust cap, duct, or battery assembly you removed. Ensure everything is secure and properly seated.
- Test the headlight by turning on the lights from inside the cabin. Check both low and high beams if applicable and confirm a steady, bright output without flickering.
If the light does not illuminate after replacement, double-check the bulb type, confirm the connector is fully seated, inspect fuses related to the headlamp circuit, and verify the ballast if you’re dealing with HID headlights. If there’s any doubt, consult a professional to avoid electrical damage.
Model-specific notes
Outback and Forester
For many Outback and Forester models, you’ll access the bulb from the engine bay. If the bulb is a typical halogen low beam (often H11), you may need to move or remove a cover or duct to reach the bulb after removing the dust cap. If a dual-headlight design is used, ensure you’re replacing the correct low- or high-beam bulb according to your model’s bulb labeling.
Impreza and Legacy
Impreza and Legacy models generally follow the same approach: access the back of the headlight from the engine side, remove the dust cap, unplug the harness, and swap in the new bulb. Some trims may require additional disassembly, such as detaching a mounting bracket or loosening nearby components to gain access. Always confirm the bulb type before purchasing.
Note: If your 2015 Subaru uses HID or LED headlights, bulb replacement may involve ballast modules or LED assemblies rather than a simple bulb swap. In such cases, replacement of the entire headlight assembly or ballast may be necessary, and a dealership or qualified automotive electrician should perform the work.
Testing and troubleshooting
After replacement, test the headlights again to ensure proper operation. If a bulb appears dim or flickers, consider reseating the bulb, checking the wiring harness for damage, and confirming you selected the correct bulb type. If both headlights are affected or you encounter an electrical issue, inspect related fuses and the vehicle’s lighting control module or consult a technician.
For peace of mind, keep a spare bulb of the correct type in the glove compartment and review the owner’s manual for any model-specific cautions or steps.
Summary
Changing a 2015 Subaru headlight usually involves identifying the correct bulb type (commonly H11 low beams and 9005 high beams on many trims), gaining access to the bulb from the engine bay (or via limited disassembly such as removing a duct or battery), unplugging the connector, removing the old bulb, installing a fresh bulb with clean hands, and testing the light before finishing. Model variations exist, so consult your owner’s manual or the headlight’s labeling to confirm bulb type and access points. If your vehicle uses HID or LED headlights, seek professional assistance for safety and proper functionality. Regular maintenance and proper bulb handling help ensure clear nighttime visibility and safe driving.