The 2010 Ford Focus generally uses H11 bulbs for the low beams and 9005 bulbs for the high beams. If your model has fog lights, those are commonly H11 as well, though variations by market and trim can occur.
Bulb configurations can differ by region and option package. Always confirm the exact sizes for your car by checking the bulb itself, the owner’s manual, or your vehicle’s service documentation, since some markets used different specifications.
Primary headlight bulb sizes
Here are the standard headlight bulb sizes typically found on the 2010 Focus in North American configurations.
- Low beam: H11 (55W)
- High beam: 9005 / HB5 (65W)
These sizes cover the common US-spec trims; always verify with the bulb label or the owner's manual to account for any regional differences or optional packages.
Other lighting considerations
Fog lights and daytime running lights (DRLs) on the 2010 Focus may use different bulbs depending on market and option level. In many US trims, fog lights use H11 as well, but some markets or packages may use alternatives such as H16. Check your specific vehicle’s documentation or inspect the existing bulbs to confirm.
How to replace headlight bulbs
If you are replacing bulbs yourself, follow these basic steps. This is a general guide; refer to your owner's manual for trim-specific details.
- Turn off the ignition and headlights, and open the hood.
- Access the headlight housing from the engine bay and remove any dust covers or panels as needed.
- Disconnect the wiring harness from the bulb socket, then rotate or release the bulb to remove it from the housing.
- Install the new bulb (H11 for low beam, 9005 for high beam) into the socket, secure it, and reconnect the wiring harness.
- Test the headlights to ensure proper operation before driving.
Handle bulbs by the base rather than the glass to avoid oils from your skin shortening bulb life. If you’re unsure or uncomfortable performing the replacement, a professional technician can assist.
Summary
For a 2010 Ford Focus, the typical headlight setup is H11 for low beams and 9005 for high beams, with fog lights commonly using H11 as well in many trims. Always verify the exact bulbs for your specific market and trim via the bulb itself or the owner’s manual, and follow proper replacement procedures to ensure reliable lighting.