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The video above shows you how to replace the battery in your 2004 Cadillac DeVille. We recommend changing the battery in Cadillacs 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 DeVille that you need to replace.
Replacing the battery in your DeVille involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some DeVilles, 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 Cadillac and they will give you the code for free. In many Cadillacs, 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.
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2004 Cadillac DeVille DTS 4.6L V8
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2004 Cadillac DeVille DTS 4.6L V8
If you have an electrical component that doesn't work, try replacing the fuse first2004 Cadillac DeVille DTS 4.6L V8
Sure you can take it in for a $19 lube, but are you OK with a stripped oil pan and cheap parts in return?2004 Cadillac DeVille DTS 4.6L V8
Don't be caught in the fog with burnt out fog light bulbs2004 Cadillac DeVille DTS 4.6L V8
Burnt out brake lights increase your chance of getting rear ended - check and change yours today1997 Cadillac DeVille 4.6L V8 Sedan