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Mazda CX-9 Dome Light Bulb Replacement Guide
How to replace the overhead dome light bulb in a 2007 to 2015 Mazda CX-9 SUV with picture illustrated instructions.

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Mazda CX-9 Dome Light
Pry Out Lens Cover
This automotive "how-to" guide was specifically written to assist owners of the 1st generation (2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 & 2015) Mazda CX-9 crossover SUV in replacing a burnt out overhead dome light bulb.

Owners of other Mazda vehicles such as the MAZDA2, MAZDA3, MAZDA6, MX-5 Miata, RX-8, MAZDASPEED3, MAZDA5, Tribute SUV, and CX-7 crossover may also find this guide to be helpful.

A replacement light bulb for the overhead dome light of a '07-15 Mazda CX-9 is part # DE3175 available from manufacturers such as Sylvania, GE, Phillips, Wagner, PIAA and Eiko.

You can also use a compatible DE3175 LED bulb.

The only tool needed to replace the overhead dome light bulb is a small flathead screwdriver.

Insert the blade of the screwdriver in the notch on the lens cover opposite of the On/Off switch and gently pry it out.

Dome Lens Cover Removed
Old DE3175 Bulb Exposed
Once the dome light cover is removed, you'll see the old # DE3175 bulb in the socket.
Pry Out Old Dome Light Bulb
Old DE3175 Light Bulb

Remove the old dome light bulb by pushing up on the metal tab in the socket with your finger or the small flathead screwdriver.
Dome Light Socket
Push In New # DE3175 Bulb
Push in a new # DE3175 light bulb into the socket and test it by sliding the switch to the "On" position.

If you are installing an LED unit and it doesn't work at first, try flipping it around in the socket.

Test New Light Bulb
Snap Lens Cover Back On
Insert the side of the lens cover closest to the light switch first and then gently snap the other side into place.

For more, check out my Mazda CX-9 Repair & Maintenance Guides page.

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