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Nissan Sentra 12V Automotive Battery Replacement Guide
How to change a dead 12 volt car battery in the engine bay of a sixth generation B16 2007 to 2012 Nissan Sentra sedan.

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2012 Sentra 12V Battery
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Loosen 10mm Nut
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Pull Off "-" Negative Terminal

This automotive maintenance tutorial was specifically written to assist owners of the sixth generation "B16" (2007, 2008, 2009, 2010, 2011 & 2012) Nissan Sentra sedan with the MR20DE 2.0L I4 motor in changing a weak or dead 12 volt automotive battery in the engine bay.

Owners of other Nissan vehicles such as the Versa, Cube, Altima, Maxima, Leaf, Pathfinder, 370Z, Juke, Rogue, Xterra, Murano and Quest may also find these DIY instructions to be helpful.

A few compatible replacement "Group Size 35" 12V car batteries for the 07-11 Sentra (2.0L I4) with their part numbers include the following: EverStart Plus 35-3, EverStart MAXX-35N (Walmart), ProStart 35-500PS, Optima RED35, and AutoCraft 35-1 or 35-2.

The tools needed to complete this procedure include a 10mm deep well socket with a ratcheting wrench, or a standard 10mm hand wrench.

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Open "+" Terminal Cover
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Loosen 10mm Nut
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Pull Off Positive Terminal
The first two steps are to open the hood and then move to the right (driver) side of the engine bay.

Loosen the "-" negative terminal first by turning the nut counterclockwise with a 10mm socket and ratcheting wrench.

Lift the terminal straight off the negative post, wrap it in a small towel to prevent accidental contact, and tuck it away on the side of the battery.

Then swing open the red plastic cover on the "+" positive terminal.

Loosen the positive terminal by turning the nut in the counterclockwise direction with the 10mm socket and ratcheting wrench.

Pull the positive terminal straight off the battery post, close the plastic cover to prevent accident contact, and tuck it away on the left side of the battery.

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Loosen Battery Clamp Nut
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10mm Nut Removed
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"J" Bar Hook Removed
Loosen the front and rear nuts on the battery clamp bar by turning them counterclockwise with the deep well 10mm socket and a ratcheting wrench.

One method for removing the clamp is to loosen the two nuts a few turns at a time until you can disengage the two "J" hook bars from their holes and lift out the battery hold down bar assembly as one piece.

Or you can completely remove the front nut, pull out the front "J" bar and then lift out the battery clamp bar along with the rear "J" bar.

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Lift Off Hold Down Bar
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Old 12V Battery Removed
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Clean Off Plastic Battery Tray
Carefully lift the old 12V battery out of the engine bay and set it down on the ground.

Be sure to bring the old battery with you to the store when you buy a new one so that you can avoid paying a "core charge" or "disposal fee". The auto parts store or a big box retailer such as Walmart will have the old battery properly recycled.

If you'd prefer to have a new battery shipped to you, check out the Group Size 35 12V Batteries at Amazon.

Clean off any large debris on the plastic battery tray to make sure that the new battery will rest level in the engine bay.

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Lower In New Battery
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Insert "J" Bar Hook In Hole
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Hook Secure In Metal Hole
Carefully lower the new battery in to the engine bay with the "+" positive post on the left (passenger) side and the "-" negative post on the right (driver) side.

Re-insert the rear "J" hook bar in to its corresponding mounting hole on the rear of the battery tray.



 

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Lower Clamp Over Battery
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Lower In Front "J" Bar
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Clamp Over Front "J" Bar
Carefully lower the metal hold-down bar over the top of the battery while avoiding any contact with the two battery posts.

Re-insert the hook on the front "J" bar in to its corresponding hole at the front bottom edge of the battery tray.

Attach the front "J" bar to the hold down clamp.

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Spin On 10mm Nut
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Tighten 10mm Clockwise
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Tighten Rear 10mm Nut
Spin the 10mm nut on to the top of the front "J" bar in the clockwise direction.

Tighten the two nuts on the battery hold-down bar in the clockwise direction with the deep well 10mm socket and a ratcheting wrench.

Check that both 10mm nuts are tight and the hold-down clamp is secure before moving on to the next steps.

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Push On Positive Terminal
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Tighten 10mm Terminal Nut
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Push On Plastic "+" Cover
Push the "+" terminal on to the positive battery post and tighten the 10mm nut in the clockwise direction until it is snug.

Try to avoid over tightening the terminal to prevent from damaging the battery post.

Snap the red plastic cover closed over the positive terminal.

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Push On "-" Negative Terminal
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Tighten 10mm Clockwise
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12V Battery Replaced
Push the "-" terminal on to the negative battery post.

Tighten the nut in the clockwise direction with the 10mm socket and ratcheting wrench.

Test the new battery by starting the engine and turning on the headlights.

If the engine won't start, turn off the ignition, remove the battery terminals, thoroughly clean them with a wire brush and then re-attach them.

For more, check out my other 2007-2012 Nissan Sentra Maintenance & Repair Guides.
 

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