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The video above shows you how to replace the battery in your 2004 Ford Mustang. We recommend changing the battery in Fords 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 Mustang that you need to replace.
Replacing the battery in your Mustang involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some Mustangs, 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 Ford and they will give you the code for free. In many Fords, 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.
Harsh downshifts? Slipping gears? You might be low on transmission fluid2004 Ford Mustang 3.9L V6 Coupe
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2004 Ford Mustang 3.9L V6 Coupe
Don't send mixed signals - if your turn signal doesn't blink, or blinks rapidly, you likely have a burnt out bulb2004 Ford Mustang 3.9L V6 Coupe
Power steering fluid is easy to check and many people (mechanics included) often forget about - learn how here2004 Ford Mustang 3.9L V6 Coupe
Avoid tickets and accidents with both working headlights! New bulbs are much brighter too2004 Ford Mustang 3.9L V6 Coupe
Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here!2004 Ford Mustang 3.9L V6 Coupe