On a 2009 Honda Accord, the rear brake/taillight bulb you’ll likely replace is a 3157 dual-filament bulb for the outer taillight. The center high-mount brake light (the third brake light on the trunk lid) is typically an LED module and not a replaceable bulb in most markets. Always confirm by inspecting the bulb or checking the owner’s manual for your exact trim and region.
How to confirm the exact bulb for your Accord
Because trim levels and regional variants can change the bulb type, use these steps to verify the correct part before purchasing.
- Inspect the removed bulb for markings such as “3157,” “3157A,” or another number that indicates the base and filament configuration.
- Consult the owner’s manual and the rear light assembly diagram for the listed bulb type, if available.
- Cross-check the part number with an auto parts retailer by entering your vehicle’s year, make, model, and trim or VIN.
Using these checks will ensure you buy the exact bulb your car requires.
Common rear-light bulb options for the 2009 Accord
The most common bulb types used in the 2009 Accord rear lamps include dual-filament variants for tail/brake functions, plus other bulbs that may appear in European or specialty markets. Here are the possibilities you might encounter.
- 3157 or 3157A dual-filament bulbs are the standard choice for outer tail/brake lights in many US-spec 2008-2012 Accords.
- 7443 or 7440 bulbs may be used in some markets for similar functions or separate brake/turn signals.
- 194 or W5W-style bulbs are sometimes used for additional side marker or license plate lights, not the main brake lamps.
Note that the CHMSL (center high-mount brake light) on many 2009 Accords uses an LED module and does not require a replaceable bulb.
Replacement tips and installation cautions
Before replacing a bulb, ensure the ignition is off and the key is removed. Wear gloves or a clean cloth to avoid getting oils on the glass. Handle the bulb by the base only, and check the seal and socket for corrosion. If the bulb fails again shortly after replacement, you may have a grounding issue or a faulty socket.
Summary
The most common bulb type for a 2009 Honda Accord’s outer rear brake/taillight is a 3157 dual-filament bulb, but confirm the exact part by inspecting the bulb, checking the owner's manual, or using an online parts lookup with your VIN. The center high-mount brake light is typically LED, not a replaceable bulb. Verify with your specific vehicle to avoid incorrect purchases.