Side Marker Bulb
Lighting
Improves side visibility of the vehicle to other drivers.
The side marker bulb illuminates the small marker light on the side of the front and rear fenders, helping other drivers judge the vehicle's position and length, especially at night. The filament weakens and fails with age.
⚠️ Owners Often Notice
If the Side Marker Bulb is starting to fail, these are the signs owners most commonly report before it gets worse:
Bulb fails to light
Dim light output
Failed inspection
Related Services
Services commonly performed on or around this part.
Replace Side Marker Bulb(s)
No standard interval on file
Inspect Side Marker Bulb(s)
No standard interval on file
Test Side Marker Bulb(s)
No standard interval on file