Owners of other Toyota or Lexus vehicles such as the Tundra, 4Runner, Hilux, Highlander, C-HR, Avalon, Camry, Corolla, Supra, Land Cruiser, Prius, RAV4, Mirai, Sequoia, Sienna, Yaris, CT 200h, ES 300h, RX 350, GX 460, LX 570, NX 300, RX 450h, UX 200 and UX 250h may also find these DIY instructions to be helpful.

The compatible replacement festoon style light bulb part number is DE3175 which is available from various manufacturers such as Sylvania, Philips, Bosch, PIAA and Eiko.

If you would like to have a brighter dome light that will also last much longer before burning out, install a DE3175 LED unit.

Update 1-20-2024: I received an email from another Tacoma owner who said that these specific 29mm long LED bulbs work perfectly in his truck - AuxLight 6614 29mm LED Festoon Bulbs.

The only tool needed to access and replace the light bulb is a small flat head screwdriver such as from a jeweler's screwdriver set or a plastic pry bar tool.

The first step is to sit in the back passenger seats.

Locate the two small notches on the front edge of the translucent plastic lens cover near the "Door / On" switch.

Carefully insert the blade of the screwdriver into one of the two notches on the front edge of the lens cover.

Gently pry out the lens cover.

You may need to re-insert the screwdriver into the other notch on the opposite side of the switch to fully remove the lens cover.

Try to avoid using excessive force. The lens cover should pop out relatively easily.

Do NOT pry at the rear edge of the lens cover. There are two plastic tabs on that side that could break.

If the old light bulb was recently turned on, be careful when you remove it. The bulb might still be hot enough to burn your fingers.

Gently pull back the flexible metal electrical contact on the left (driver) side of the bulb socket.

The OEM (original equipment manufacturer) light bulb was marked as part number Toshiba 12V8WAL 98.

If you would like to have a brighter dome light, install a compatible replacement DE3175 LED bulb.

Update 1-20-2024: The owner of a 2022 Tacoma emailed me that these LED bulbs fit perfectly - AuxLight 6614 29mm LED Festoon Bulbs.

To test the new light bulb, slide the switch to the "On" position.

Tip - If you installed an LED bulb and it doesn't work, try pulling it out of the socket, rotate it 180 degrees and push it back into the socket. Some LED bulbs are polarized and will only work when the "+" positive and "-" negative electrical contacts are in the correct orientation.

First, re-insert the two tabs on the rear edge into the housing.

Then gently snap in the retaining clips on the front edge.

Slide the switch to the "Door" position so that the dome light will illuminate every time you open the driver or passenger doors.

Be sure to write down the bulb change in your truck's service records.

Please check out all of the 2016-2021 Toyota Tacoma DIY Repair & Maintenance Guides.