For the 2016 Toyota Sienna, the high-beam headlight uses a 9005 bulb. Low-beam fitment varies by configuration: models listed with the L condition use H11, while the Limited configuration uses D4S. Confirm the trim and headlight assembly before ordering, since these low-beam bulbs are not interchangeable.
Fog-light fitment is listed as H11 LED or H16 LED. Daytime running lights are LED on one configuration, while the L condition uses 9005. Front turn signals and parking lights use 7444NA, with 3457A listed for the L condition. The front side-marker bulb also depends on the headlight type: 168NA with halogen headlights or 3457A with LED headlights.
Other notable exterior fitments include 921 reverse lights, 7443R brake and tail lights, 7440A rear turn signals, and LED rear side markers. The center stop light is LED.