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Mazda Mazda3 Headlight Bulbs Replacement Guide
How to change a burnt out low beam, high beam or turn signal bulb in the headlights of a 2010 to 2013 Mazda3.

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2012 Mazda3 Headlight
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Low Beam - Resembles Eye
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Black/Green Low Beam Base

This automotive "how-to" guide was specifically written to assist owners of the second generation (2010, 2011, 2012 & 2013) Mazda 3 in changing a burnt out low beam, high beam or front turn signal light bulb in the headlight assemblies.

Owners of other Mazda vehicles such as the Mazda2, Mazda5, Mazda6, MX-5 Miata, Mazdaspeed3, CX-5, CX-7, CX-9, MPV, Tribute, RX-8, Axela, Demio, Verisa, Premacy, and Atenza may also find these DIY instructions to be helpful.

Replacement headlight bulbs with their part numbers are as follows: Low Beam # H11, High Beam # 9005, and Turn Signal # 7444NA.

No tools are needed to replace the low or high beam bulbs. To access the front turn signal bulb, you'll need a Phillips head screwdriver and a small flathead screwdriver.

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1/4 Turn Counter Clockwise
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Press Button - Remove Plug
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Old Low Beam Bulb Removed
The Low Beam bulb is located at the center of the headlight assembly and it resembles a robot eye.

Reach in behind the headlight housing and rotate the black/green base of the low beam bulb 1/4 turn counter clockwise before pulling it straight out of the socket.

Press the black plastic release tab on the power connector and slide it straight off the base of the old low beam bulb.

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Philips H11 LL 12V 55W
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Low Beam Bulb Socket
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Insert New H11 Low Beam
Try to avoid touching the glass part of the new H11 halogen bulb with your fingers or anything greasy in the engine bay. If you do happen to get the new bulb dirty, wipe it clean with an alcohol moistened paper towel.

Insert the new H11 bulb in to the socket and rotate it 1/4 turn clockwise to lock it in place.

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1/4 Turn Clockwise - Lock
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High Beam Headlight
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Black High Beam Bulb Base
The High Beam bulb is located at the inner edge of the headlight assembly.

Reach in behind the headlight housing and locate the black/grey base of the old bulb.

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Press Button - Slide Off Plug
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Power Connector Removed
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1/4 Turn Counter Clockwise
Press the release button on the electrical connector and slide it straight off the base of the old bulb.

Rotate the base of the bulb 1/4 turn counter clockwise and pull it straight out of the socket.

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High Beam Bulb Removed
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Sylvania 9005 12V 60W
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High Beam Bulb Socket



 

Try to avoid touching the glass part of the new 9005 high beam halogen bulb with your fingers or anything greasy in the engine bay.

If you do get the new bulb dirty, wipe it clean with an alcohol moistened paper towel.

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Insert New 9005 Bulb
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1/4 Turn Clockwise
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Push On Power Plug
Insert the new # 9005 high beam bulb in to the socket and rotate it 1/4 turn clockwise to lock it in place.

Slide the power plug on to the base of the new high beam bulb until it clicks securely in place.

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Turn Signal At Outer Edge
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Turn Steering Wheel
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Unscrew Center of Fastener
The Turn Signal bulb is located at the outer edge of the headlight assembly.

To access the bulb, you'll need to go in through the wheel well liner.

The first step is to turn the steering wheel all the way in the opposite direction of the burnt out turn signal bulb.

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Pull Out Plastic Fastener
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Loosen Black Plastic Screw
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Pry Out Fastener
The wheel well liner or "splash guard" is held in place by three black plastic fasteners.

Loosen the black plastic screw at the center of each fastener with a Phillips head screwdriver.

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Unscrew Third Fastener
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Three Fasteners Removed
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Pull Back Wheel Well Liner
Remove the black plastic screw first and then gently pry out the outer piece of each fastener.

Once all three fasteners have been removed, pull back the black plastic wheel well liner.

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Look Up To - Turn Signal
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Light Grey Turn Signal Socket
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1/4 Turn Counter Clockwise
Look up past the wheel well liner and locate the light grey turn signal light bulb socket.

Rotate the socket 1/4 turn counter clockwise and pull it straight out of the headlight housing.

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Pull Out Old 7444NA Bulb
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Turn Signal Bulb Socket
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1/4 Turn Clockwise
Pull the old turn signal bulb straight out of the socket and push in a new amber colored # 7444NA bulb.

Re-insert the socket back in to the headlight housing and rotate it 1/4 turn clockwise to secure it in place.

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Replace Wheel Splash Guard
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Insert Larger Outer Piece
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Push In Black Plastic Screws
Push the wheel well liner back in to place and insert the larger outer pieces of each fastener.

Then pop in the black plastic screws in to the center of each fastener to lock them in place.

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Wheel Well Liner Replaced
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Test New Low Beam Bulb
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Testing Headlight Bulbs
Test the new bulbs by turning on the headlights, activating the hazard signals and flashing the high beams.

For more, check out my other 2010-2013 Mazda Mazda3 Repair & Maintenance Guides.
 

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