Mazda MX-5
Miata Dome / Map Light Bulb Replacement Guide
How to change a burnt out overhead dome /
map light bulb in a 4th generation 2016 to 2021 Mazda MX-5 Miata.
2018 Miata Dome Light |
Move Rearview Mirror |
This automotive
maintenance tutorial was specifically written to assist owners of the 4th
generation (2016, 2017, 2018, 2019, 2020 & 2021) Mazda MX-5 Miata in
changing a burnt out overhead dome light bulb (also known as the "map
light") located above the rearview mirror. Owners of other Mazda vehicles such as the Mazda2 (Demio), Mazda3 (Axela), Mazda5, Mazda6 (Atenza), CX-3, CX-5, CX-7, CX-9, RX-8 and MPV may also find these DIY instructions to be helpful. The compatible replacement "festoon" style light bulb is part number DE3715 which is available from various manufacturers such as Sylvania, GE, Eiko and PIAA. If you would like to have a brighter dome light, install a DE3175 LED bulb. The only tool needed to access and replace the light bulb is a small flathead screwdriver or a plastic pry bar tool. |
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Insert Flathead Screwdriver |
Pry Out Lens Cover |
The first step is
to rotate the rear view mirror down to create more working room below the
dome light housing. 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 plastic pry bar tool. Insert the blade of the tool into the small notch at the front edge of the lens cover (closest to the windshield). Gently pry out the lens cover. You may need to re-insert the screwdriver in several locations to fully remove the lens cover. Try to avoid using excessive force. The lens cover should pop out relatively easily. |
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Lens Cover Removed |
Old Light Bulb Exposed |
Set the lens cover
aside in a safe place. If the old light bulb was recently turned on, be careful since it might still be hot enough to burn your fingers. |
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Pry Out Old Light Bulb |
Old Light Bulb Removed |
Use the screwdriver
or plastic pry bar tool to gently remove the old light bulb. Only apply pressure to the metal end caps of the old light bulb. Do not pry at the glass center of the old bulb to prevent from having it shatter and send shards of glass into your face. |
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KHA12V10W |
Empty Bulb Socket |
The original OEM
light bulb was marked as part number KHA12V10W 17F13F which is the same as
the DE3715. If you would like to have a brighter dome light, install a compatible replacement DE3175 LED bulb. Tip - If you installed an LED bulb and it doesn't work, try pulling it out of the socket, rotating it 180 degrees and pushing 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. |
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Push In New Light Bulb |
Line Up Lens Cover |
Push the new light
bulb straight into the socket. Line up the lens cover with the light housing. |
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Pop In Lens Cover |
Test New Dome Light Bulb |
Gently snap the
lens cover back into place to secure the plastic retaining clips. To test the new light bulb, slide the switch to the "On" position. I recommend leaving the switch in the "Door" position so that the light will turn on every time the driver or passenger door is opened. Be sure to write down the bulb change in your vehicle's service records. For more,
check out all of my
2016-2021 Mazda MX-5 Miata DIY Repair & Maintenance Guides. |
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