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Mitsubishi Outlander Dome Light Bulb Replacement Guide
How to change a burnt out dome light bulb in a 3rd generation 2014 to 2021 Mitsubishi Outlander SUV.

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2020 Outlander SEL
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Dome Light Bulb Housing
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Two Small Notches
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2014, 2015, 2016, 2017, 2018, 2019, 2020 & 2021) Mitsubishi Outlander SUV in changing a burnt out dome light bulb located in the housing attached to the headliner above the second row of passenger seats.

Owners of other Mitsubishi vehicles such as the Outlander Sport, Eclipse Cross, Mirage, Mirage G4, Lancer, ASX, Montero Sport, Pajero, Xpander, Strada and RVR may also find these DIY instructions to be helpful.

The OEM (original equipment manufacturer) dome light bulb was marked as part number Toshiba A12V8W.

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

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

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

The first step is to sit in the middle rear passenger seat for the best access to the light housing.

Locate the two small notches on the front edge of the lens cover (closer to the front of the SUV).



 

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Pry Out Front Edge
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Lens Cover Removed
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Old Light Bulb Exposed
To prevent from scratching the plastic surfaces, you may choose to either cover the tip of your screwdriver with a thin micro fiber cloth or instead use a small plastic trim panel removal tool.

Insert the blade of the small flat head screwdriver into one of the two notches by the front edge of the lens cover.

Very gently pry out the lens cover.

You may need to remove and reinsert the screwdriver into the other notch to fully remove the lens cover.

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

Set the lens cover aside in a safe place.

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Pull Back Flexible Contact
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Pull Out Old Light Bulb
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Old Light Bulb Removed
Warning - If the old light bulb was recently turned on, it might still be hot enough to burn your fingers. Allow the old bulb to cool off before you touch it.

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

Pull the old light bulb out of the socket.

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Empty Bulb Socket
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Install New Light Bulb
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Test New Light Bulb
Insert a new festoon style number DE3175 light bulb into the socket.

Make sure the new bulb is securely installed in between the two electrical contacts.

If you'd like to have a brighter dome light (also known as the "room lamp"), install a compatible replacement DE3175 LED unit.

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

Tip - If you installed an LED bulb and it doesn't work, try removing it from the socket, rotate it 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.

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Pop In Lens Cover
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Lens Cover Secured
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Testing New Dome Bulb
Line up the lens cover with the opening in the light housing.

Gently snap the lens cover back into place.

Make sure the lens cover is flush with the light housing at every edge.

I recommend moving the switch to the "Door" position so that the dome light will turn on any time one of the passenger doors or the driver door are opened.

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

Please check out all of the 2014-2021 Mitsubishi Outlander DIY Repair & Maintenance Guides.
 

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