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The video above shows you how to replace the battery in your 2010 Mazda 3. We recommend changing the battery in Mazdas every 4 years. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your 3 that you need to replace.
Replacing the battery in your 3 involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some 3s, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual - it will usually be either a sticker or small card in the booklet. If you can't find it, call Mazda and they will give you the code for free. In many Mazdas, the transmission "learns" how you drive over time and makes adjustments, so you may experience altered driving dynamics as your car re-learns your driving style after changing the battery.
Unlike a waist belt, these usually become looser as they age! Learn how to check it here2010 Mazda 3 i 2.0L 4 Cyl.
Learning how to jump your car before you need to is an excellent idea2010 Mazda 3 i 2.0L 4 Cyl.
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2010 Mazda 3 i 2.0L 4 Cyl.
See how to seal up minor power steering fluid leaks2010 Mazda 3 i 2.0L 4 Cyl.
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2010 Mazda 3 i 2.0L 4 Cyl.
If you have an electrical component that doesn't work, try replacing the fuse first2010 Mazda 3 i 2.0L 4 Cyl.