The most difficult bulb to determine has failed in your Suzuki Aerio is the brake light bulb. Unless you have someone assist you checking the rear lights or a prop stick to place on the brake pedal so you can check them yourself, brake light bulbs are often taken for granted until someone lets you know it's out. The sedan and wagon models of the Aerio employ different brake light bulbs, but both require the same procedure to access them.
Open the trunk (sedan) or liftgate (wagon) of the Suzuki Aerio.
Locate the two retaining screws for the respective taillight assembly located on the pillar.
Remove the two screws with the appropriate screwdriver.
Pull the taillight assembly back away from the Aerio to unseat the guide pin from its anchor.
Turn the brake light socket counterclockwise 1/4 turn to remove it from the assembly. The brake light and taillight are in the bottom red section of the assembly. The top bulb is the turn signal.
Pull the brake light from the socket in the sedan. Press the bulb inward on the socket and twist it counterclockwise 1/2 turn on the wagon.
Insert the new bulb by reversing the extraction procedure. Test the bulb by stepping on the brakes and turning on the lights. Shut the lights off.
Reinstall the taillight assembly making sure to align the guide pin to the anchor and push slightly inward.
Replace the retaining screws to the assembly in the side of the pillar.
