The fog lights will improve visibility at night and during foggy conditions. To turn the fog lights on, rotate the fog light switch to the position. The headlight switch must be in the. position before turning on the fog lights. To turn the fog lights off, do any of the following: Rotate the fog light switch to the. position.
You’ll find Mazda 3 headlights featuring exclusive designs and bright illumination in our store. Our factory-style headlights will help you retain the stock look and original characteristics, whereas custom headlights will make your car one of a kind. Projector headlights provide particularly focused light beams.

I found this thread when I needed some help searching for headlight bulb replacement info. I wrote this how-to guide that has pictures of the little headlight clips, part numbers, and etc. I just thought I'd leave a link here for anyone else that ends up here: Mazda 3 Headlight Bulb Replacement

I have a 2011 Mazda 3 w/ technology package. The auto on/off headlights are not working. Anyone have any ideas on a cause/fix for this? When I start my car in my dark garage the lights come on immediately. They will never switch off even in bright sunlight after that. If I start the car in bright sunlight the lights are off. The Socket is not made for the H7 bulb but it will work on it, I couldn't locate a socket for the H7 bulb so I used this one, I like that the wires are a bigger guage than the factory, less resistance in the wires, and the wires are copper instead of aluminum or some other cheap material.
2005 mazda 3 brake lights non functioning. tried fuses and bulbs, have come to conclusion that it is brake light wsitch except for 3rd brake ight functions when you depress the brake pedal. read more
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mazda 3 headlights not working