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Toyota Highlander Dome Light Bulbs Replacement Guide
How to change a burnt out dome / rear passenger reading light bulb in a 3rd generation 2014 to 2018 Toyota Highlander.

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2017 Highlander Dome Light
3rd Row Passenger Light
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2014, 2015, 2016, 2017, 2018 plus maybe also the 2019 and 2020 model years) Toyota Highlander SUV in changing a burnt out dome (also known as the rear passenger reading light) bulb in the overhead housings attached to the headliner above the second row and third row of seats.

Owners of other Toyota, Lexus and Scion vehicles such as the 4Runner, Avalon, 86, C-HR, Camry, Corolla, iM, Land Cruiser, Mirai, Prius, RAV4, Sequoia, Sienna, Tacoma, Tundra, Yaris, FR-S, xB,  xD, tC, xA, CT 200h, ES 250, ES 300, ES 330, ES 350, IS 250, IS 350, RX 300, GS 250, NX 300 and RX 350.

The compatible replacement miniature wedge base light bulb part number is 194.

For brighter dome lights, install some 194 LED bulbs.

The only tool needed to access and replace the bulbs is a small flathead screwdriver or a small plastic pry bar tool.

Dome / Reading Light
Insert Screwdriver - Notch
To prevent from scratching the plastic surfaces, you can either cover the tip of your screwdriver with a thin micro fiber cloth or instead use a small plastic pry bar tool.

There are four "dome" or "rear passenger reading / courtesy" lights inside the Highlander.

In this guide, I'm replacing the light bulb in the housing located above the second row of seats on the passenger side of the vehicle.

Insert the blade of the screwdriver into the small notch at the top of the lens cover.

(The notch is located at the inner edge of the lens cover on the light housings over the 3rd row / cargo area.)

Pry Out Lens Cover
Lens Cover Removed
Gently pry out the lens cover.

Avoid using excessive force. The lens cover should pop out relatively easily.

Set the lens cover aside in a safe place.

Old Light Bulb Exposed
Pull Out Old Light Bulb
If the old light bulb was recently turned on, be careful when you remove it. It might still be hot enough to burn your fingers.

Pull the old light bulb straight out of the socket.


Old Light Bulb Removed
Push In New Light Bulb
The OEM light bulb was marked as Toshiba part number 12V8W U6Y.

It can replaced with any miniature wedge base light bulbs such as the number 194, 168, 2825, W5W or a compatible LED.

Lower Tabs In Lower Edge
Gently Snap In Retaining Clips
I recommend testing the new light bulb by pressing the "On / Off" button before replacing the lens cover.

(Tip - If you installed an LED bulb and it doesn't work at first, try pulling it out, rotating the electrical contacts 180 degrees and then 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.)

Lower the two tabs on the bottom edge of the lens cover back into the housing.

Gently snap in the two retaining clips on the top edge of the lens cover.

Lens Cover Replaced
Test New Light Bulb
Be sure to record the bulb change in your vehicle's service records.

Please check out all of my 2014-2018 Toyota Highlander DIY Repair & Maintenance Guides.

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