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The video above shows you how to replace the battery in your 2008 Nissan Sentra. We recommend changing the battery in Nissans 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 Sentra that you need to replace.
Replacing the battery in your Sentra involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some Sentras, 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 Nissan and they will give you the code for free. In many Nissans, 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.
Minor transmission fluid leaks can often be fixed with the right sealant - see how to do this2008 Nissan Sentra S 2.0L 4 Cyl.
Coolant hoses wear out over time and need to be replaced - check 'em early and often2008 Nissan Sentra S 2.0L 4 Cyl.
Harsh downshifts? Slipping gears? You might be low on transmission fluid2008 Nissan Sentra S 2.0L 4 Cyl.
Do you ever get into your friend's car and notice a bad smell? A dirty cabin air filter could be the culprit2008 Nissan Sentra S 2.0L 4 Cyl.
Stop! Checking your brake fluid from time to time is a great way to ensure safe stopping2008 Nissan Sentra S 2.0L 4 Cyl.
If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems2008 Nissan Sentra S 2.0L 4 Cyl.