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VW Jetta 12V Automotive Battery Replacement Guide
How to change the 12 volt car battery in the engine bay of a sixth generation 2011 to 2016 MK6 Volkswagen Jetta.

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2012 Jetta 12V Car Battery
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Flip Open Battery Cover
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"-" Loosen 10mm Nut

This automotive maintenance tutorial was specifically written to assist owners of the 6th generation MK6 (2011, 2012, 2013, 2014, 2015 & 2016) Volkswagen Jetta in removing and replacing a dead 12V automotive starter battery in the engine bay.

Owners of other VW Group vehicles such as the Passat, CC, Tiguan, Golf, Touareg, Beetle, GTI, SportWagen, Eos, Rabbit, Bora, Vento, Lavida, Audi A3, A4, S4, A6, S6, A7, A8, Q5, Q7, A5, S5, and TT may also find these DIY instructions to be helpful.

The OEM battery in this 2012 VW Jetta is part number       5K0 915 105 D (A.K.A. # 5K0915105D or 5K0-915-105-D).

Other compatible replacement batteries with their part #'s include the Exide Edge FP-AGML4/94R, ACDelco 48AGM, Bosch S6585B S6, Bosch # H6-760B, AutoCraft 48H6 or 47H5 and Exide EA640.

To replace the battery, you'll need a 10mm socket with a 1/4" drive ratcheting wrench, a 13mm socket, extension bars and a 3/8" drive ratcheting wrench.


Some of the symptoms of a weak or "dead" 12V battery include slow starting, a slow cranking starter motor, headlights that dim when stopped or become brighter when accelerating and just hearing a clicking noise when attempting to start the car.

Most car batteries tend to last about 3 to 5 years depending on your climate and driving conditions. If your battery is around 3 years old, I would recommend replacing it as well having your alternator and starter tested at an auto parts store.

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Pull Off Negative Cable
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Tuck Back "-" Cable
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Loosen 10mm "+" Cable
The battery is located at the right rear area of the engine bay in between the air intake tube and the fuse box.

Flip open the top flap of the battery cover to access the electrical posts.

Loosen the negative "-" cable first by turning the nut counter clockwise with the 10mm socket and ratcheting wrench.

Pull the negative terminal off the post, cover it with a rag and tuck it away on the side of the battery.

Then loosen the nut on the positive "+" battery terminal by turning it counter clockwise with the 10mm socket and ratcheting wrench.

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Lift Off Positive Cable
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Lift Up Battery Box
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Battery Cover Removed
Lift the positive terminal off the post and tuck it away to the side of the battery.

Pull the soft battery box up and off the old battery and set it aside in a safe place.

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Left Side Battery Clamp
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Loosen With 13mm Socket
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Use Extension Bar
The old battery is still held in place to the battery tray by a metal clamp on the left side secured with a 13mm bolt.

Attach a 13mm socket to a long extension bar and a 3/8" drive ratcheting wrench and loosen the bolt by turning it counter clockwise.

You don't have to completely remove the bolt in order to pull out the old battery.



 

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Lift Out Old 12V Battery
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Silver Clamp On Left
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Clamp - Loose But Attached
Carefully lift the old battery straight off the tray and out of the engine bay.

Be sure to bring your old battery with you to the auto parts store or Wal-Mart to avoid having to pay a "core" charge (deposit) or a "disposal fee" for the recycling of the old battery.

If you can wait a few days for delivery, the ACDelco 48AGM battery has excellent reviews on Amazon.

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VW Part # 5K0915105D
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Old 12V Battery Removed
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Lower Down New Battery
Lower a new battery down in to the engine bay and on to the battery tray with the "-" negative side facing the are of the vehicle and the "+" post near the front of the car.
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Tighten 13mm Battery Clamp
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Lower Battery Cover
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Battery Cover Replaced
Make sure that the metal battery clamp is in place over the lip on the bottom left edge of the new battery.

Tighten the bolt by turning it clockwise with the 13mm socket and ratcheting wrench.

Lower the soft battery cover down over the new battery with the flap on the top side.

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Replace "+" Cable
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Tighten 10mm Clockwise
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Replace Negative Cable
Push the "+" terminal down in to place over the positive battery post.

Tighten the terminal by turning the nut clockwise with the 10mm socket and ratcheting wrench.

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Tighten 10mm Clockwise
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Close Battery Top Flap
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New 12V Battery Installed
Then replace the "-" negative battery terminal and tighten the nut by turning it clockwise with the 10mm socket and ratcheting wrench.

Close the flap on the top of the battery cover to finish the job.

For more, check out my other VW Jetta DIY Repair Guides.
 

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