Q: How do you access and replace the Fog Light Bulb and other related bulbs on Toyota Matrix?
A: The park/turn signal lights and side marker lights are integrated into the headlight housing, with access to the bulbs available from behind, though it may be challenging. For left-side bulbs, removing the battery may help. To replace a bulb, rotate the bulb holder counterclockwise and pull it out, then remove the bulb from the holder. In some models, the side marker light is a separate unit located in the front fender, requiring access from underneath after partially removing the inner fender splash shield. The process for installation follows the reverse order of removal. The taillight, brake, turn signal, and side marker bulbs can be accessed by removing panels in the cargo area; similarly, rotate the bulb holders counterclockwise to remove the bulbs, with installation reversing the removal steps. For the center high-mounted stop light, open the liftgate, remove the pushpins securing the bottom cover, take out the screws, lower the bulb housing, twist the bulb holder counterclockwise to remove it, and pull the bulb straight out. The installation follows the reverse order. The front overhead interior light can be removed as an assembly using a pry tool, with the bulb pulling straight out from between the terminals, and installation is the reverse. For the license plate light, use a plastic trim tool or taped screwdriver to remove the access cover on the liftgate's interior side, then remove the bulb holders and replace the bulbs, with installation reversing the removal. To replace the fog light, raise the vehicle and secure it on jackstands, remove the lower engine splash shield, twist the bulb holder from the housing, and replace the bulb, with installation following the reverse order.