The Lexus CT200h uses an H9 bulb size for high beam headlight operation and an H11 bulb size for low beam headlight operation. The replacement chart covers vehicle production spanning 2011 to 2017 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H9 bulb is specified for the high beam headlight position across all Lexus CT200h model years from 2011-2017. This bulb type operates at 65 watts and uses a PGJ19-5 base, belonging to the H-series halogen family designed for focused, high-intensity beam projection.
The H11 bulb is specified for the low beam headlight position across the same 2011-2017 model range, exclusively in vehicles fitted with halogen capsule headlamps. The H11 operates at 55 watts and uses a PGJ19-2 base, also within the H-series halogen family.
Although the H9 and H11 bulbs share a physically similar base housing, they are not interchangeable. The H9 base has an open design that allows its filament to run hotter, while the H11 base is enclosed. Substituting one for the other risks improper fitment and potential damage to the headlamp assembly.
The low beam specification for the Lexus CT200h (2011-2017) carries a halogen capsule headlamp qualifier, indicating that this H11 fitment applies specifically to vehicles equipped with that headlamp configuration rather than projector or other system variants.
The H9 and H11 types are both single-filament bulbs, meaning each serves a dedicated function rather than combining high and low beam output within a single unit. This design requires separate bulb replacements for each beam function.