Used for: Back Up Reverse Light Bulb
Used for: Parking Light Bulb(without LED parking Lights), Turn Signal Light Bulb Front(without LED parking Lights)
Used for: Turn Signal Light Bulb Front(with LED parking Lights), Turn Signal Light Bulb Rear
Used for: Dome Light Bulb
Used for: Interior Door Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
Used for: Interior Door Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
Used for: Vanity Mirror Light Bulb
This 2017 Toyota Prius bulb size guide is designed to help you verify the correct bulb type by lighting position, so you can replace the right lamp without guessing. Because the Prius can use different lighting setups depending on trim, market, and package, it is important to match the bulb to the exact location on the vehicle.
Use this page as a quick reference for exterior and interior bulbs on the 2017 Prius, including headlights, brake lights, turn signals, reverse lights, license plate lights, and cabin bulbs. The listed bulb sizes reflect the available fitment data for this model year and can help narrow down the correct replacement before you buy.
Fitment can vary on the 2017 Toyota Prius, especially between trims with LED lighting and versions that use conventional bulbs in certain positions. Some lamps are listed as LED from the factory, while others may use standard bulb sizes such as 921, 7444NA, 7440A, 168/917, 194/7441, or DE3175. If you are considering an aftermarket LED conversion, make sure the bulb base, polarity, and physical clearance are compatible with the housing, and check whether resistors or a CANbus-compatible design are needed to prevent warning lights or fast flashing. Before ordering replacements, it is always smart to inspect the installed bulb or confirm the original equipment by VIN, trim, and lighting package, since the same 2017 Prius may not use identical bulbs across every market or body style.
The available fitment data for the 2017 Toyota Prius lists the low beam headlight as LED. Because the headlight assembly may differ by trim or market, confirm the exact lamp type before replacing it.
The high beam headlight is listed as LED on this page. If your Prius has factory LED headlamps, the bulb may be part of the headlamp assembly rather than a simple replaceable halogen bulb.
The back up reverse light bulb is listed as 921. This is one of the most common service bulbs on the 2017 Prius and is typically used for the rear backup lamps.
The license plate light bulb is listed as LED. If your car has factory LED plate lighting, you may need to replace the full LED unit or a specific serviceable bulb depending on the housing design.
For models without LED parking lights, the front turn signal bulb is listed as 7444NA and the rear turn signal bulb is listed as 7440A. For models with LED parking lights, the front turn signal bulb is also listed as 7440A.
The parking light bulb is listed as LED on versions with LED parking lights. On versions without LED parking lights, the parking light bulb is listed as 7444NA.
The brake light bulb is listed as LED. On many Prius trims, the brake light may be integrated into an LED rear lamp assembly, so replacement may not be a simple bulb swap.
The tail light bulb is listed as LED. As with other rear lighting on this model, the exact service method can depend on the trim and lamp assembly.
The dome light bulb is listed as DE3175. This is the cabin dome lamp size shown in the available bulb chart for this model year.
The map light bulb is listed as 168 or 917. These same sizes are also shown for the trunk or cargo area light and the interior door light.
The vanity mirror light bulb is listed as 194 or 7441. If you are replacing both sides, check the installed bulb and match the base and wattage requirements.
Yes. Trim and lighting package can change the bulb setup, especially for LED exterior lighting. Always verify the exact position on the vehicle instead of assuming every 2017 Prius uses the same bulb.
