Mazda CX-9
Cargo Area Light Bulb Replacement Guide
How to change a burnt out cargo area
light bulb in the tailgate of a 2nd generation 2016 to 2021 Mazda CX-9.
 2019 CX-9 Cargo Light |
 Insert Screwdriver |
 Pry Out Lens Cover |
| This automotive
maintenance tutorial was specifically written to assist owners of the second
generation 2016, 2017, 2018, 2019, 2020 and 2021 Mazda CX-9 SUV in changing
a burnt out cargo area light bulb located in the housing attached to the
plastic interior panel on the tailgate door. Owners of other Mazda vehicles such as the CX-5, CX-3, CX-30, MX-30, CX-8, Mazda8 (MPV), MX-5 Miata, Mazda2 (Demio), Mazda3 (Axela), Mazda6 (Atenza) and Mazda5 (Premacy) may also find these DIY instructions to be helpful. The compatible replacement festoon style light bulb part number is DE3175. If you would like to have a brighter cargo area light that will also last much longer before burning out like the traditional incandescent 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 two steps are to open the tailgate door and then locate the cargo area light housing. Locate the small notch on the left (passenger) side of the lens cover situated near the "On / Off" switch. Insert the small flat head screwdriver or a plastic pry bar tool into the notch. Gently pry out the lens cover. Try to avoid using excessive force. The lens cover should pop out relatively easily. |
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 Lens Cover Removed |
 Flexible Electrical Contact |
 Pull Out Old Light Bulb |
| Set the lens cover
aside in a safe place. If the old light bulb was recently turned on, be careful when you remove it. The old light bulb might still be hot enough to burn your fingers. Push back the flexible metal electrical contact on the right (driver) side of the light housing to release the old light bulb. Pull the old light bulb straight out of the socket. |
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 Old Light Bulb Removed |
 Empty Bulb Socket |
 Install New Light Bulb |
| The OEM (original
equipment manufacturer) light bulb in this 2019 CX-9 was marked as part
number KHA12V8W 48F06B. Push a new number DE3175 light bulb into the socket. First, insert the bulb into the opening in the electrical contact on the left and then pop it into the flexible electrical contact on the right side of the socket. |
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 Push On Lens Cover |
 Lens Cover Secured |
 Test New Light Bulb |
| Make sure the new
light bulb is securely installed in the socket. Line up the lens cover with the light housing. Gently pop the lens cover back into place to secure the retaining clips. To test the new light bulb, move the rocker switch to the "On" position. Tip - If you installed an LED bulb and it doesn't work, try removing it from 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 in the correct orientation. Don't forget to write down the bulb change in your vehicle's service records. For more,
please check out all of the
2016-2021 Mazda CX-9 DIY Repair & Maintenance Guides. |
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