if it is the same body as the 2008, remove the front portion of the drivers side front inner fender.
The battery, on a 2009 Dodge avenger, can be removed by first removing the battery cover. Remove the battery cables and the retaining rod. The battery can be lifted out.
You have to take off your front Save bumper.
You don't, it is a sealed battery.
How do I change a Wiper motor for a 99 dodge avenger?
he car computer module on a Dodge Avenger is located under the hood, close to the battery, mounted to a bracket
In the wheel well on the driver's side.
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In the 2013 Dodge Avenger, the battery is located in the engine compartment, specifically on the driver's side. To access it, you'll need to open the hood and look for the rectangular battery casing, which is typically secured with a bracket. Make sure to disconnect any cables carefully if you need to remove or replace the battery.
Inside the fender, in front of the drive side front tire.
Could be the alternator has failed.
Anyplace that sells the Optima battery can tell you the correct size to purchase.
Dodge Avenger was created in 1995.