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And a question. Has anyone successfully changed a 12V battery themselves? I can't find a how to, and I have a new battery sitting in wait.
Do I need any special tools?
 

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You probably will need a box wrench (I'm going to guess 10mm size).
 

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12V battery swap

If you have to ask, you need to be very careful or get help. If you put a jump battery on the front jumper connections while you swap the rear one you can preserve the engine check data for emissions testing later. You must be very careful as the terminals in back would be hot while the jump battery is connected up front. Again, get help if in doubt as to how to do it safely.... :)
 

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And a question. Has anyone successfully changed a 12V battery themselves? I can't find a how to, and I have a new battery sitting in wait.
Do I need any special tools?
Yes, I have changed many 12V car batteries. You'll see what tools you'll need when you have uncovered the battery, PACAVolt. Given that the main battery maintains the 12V, I'd say do not have the car plugged in and charging while you swap the battery.

And why are you doing this?
 
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