The typical answer is that most Forester headlight assemblies use two replaceable bulbs for the main beams—one low-beam and one high-beam—though the exact count can vary by model year and trim. Newer Foresters with LED headlights usually don’t use traditional replaceable bulbs for the main beam, and some trims may still rely on bulbs for turn signals or daytime running lights.
What follows explains how the bulb count changes across generations and trim levels, so you can identify what you’ll be dealing with on your particular Forester and how to replace it if needed.
Variations by model year and headlight type
Halogen-based headlamps (older Foresters)
In many older Forester models with halogen headlamps, the main headlight assembly houses two replaceable bulbs for the primary beams: one for low beam and one for high beam. Some trims also include a separate bulb for the front turn signal within the same housing, while daytime running lights may be a separate bulb or integrated, depending on the year and trim. Always verify with your owner's manual or by inspecting your vehicle.
- Two main bulbs for low and high beams in typical halogen configurations
- Possible separate turn signal bulb in the same headlight housing (varies by year/trim)
Practically speaking, halogen-equipped Foresters generally involve two replaceable bulbs for the main headlights, with an additional turn-signal bulb depending on the specific model and option package.
LED-based headlamps (newer Foresters)
For newer Forester models that use LED headlamps, the main beams are produced by LED modules rather than replaceable bulbs. In these configurations, there are typically no traditional headlight bulbs to replace for the main beams. The turn signals and daytime running lights may still use bulbs or LEDs depending on the trim; some trims use LED turn signals while others use separate incandescent bulbs.
- Main headlight units commonly use LED modules, not replaceable bulbs
- Turn signals and DRLs vary by trim—either LED modules or replaceable bulbs
When dealing with LED-based headlights, you generally replace the entire LED module rather than a single bulb. If your Forester has a bulb-based signal light in the same housing, you’ll replace that separate bulb as needed.
What you should check if you're replacing a headlight bulb
To identify the exact bulb configuration for your specific vehicle, follow these steps:
- Check the owner's manual or the official parts diagram for your exact year and trim
- Inspect the headlight assembly to determine whether the main beam is LED or bulb-based
- Note whether the turn signal or daytime running light is a separate bulb or an LED module
Bottom line: the count and type of bulbs depend on generation and trim. Halogen assemblies typically use two replaceable bulbs for the main beams, while LED-equipped headlights rely on LED modules for the main beams and may use bulbs only for ancillary lights, depending on the configuration.
Summary
In summary, older Subaru Foresters with halogen headlights usually have two main-beam bulbs (low and high) in the headlight assembly, with a possible extra bulb for the turn signal depending on the trim. Newer Foresters with LED headlights generally do not use replaceable bulbs for the main beams, though turn signals or daytime running lights may still involve bulbs or LED modules depending on the trim. Always confirm the exact setup for your model year and trim by consulting the manual or a parts diagram.