In this guide, you will find instructions on how to change the battery on an Audi.

To change the battery on an Audi you will need a few basic tools such as a 10mm wrench, terminal cleaning brush, battery protector, and of course a new Audi battery.

What you will need

Procedure

  1. Park your Audi on level ground, set the parking brakes, and remove the key from the ignition.

    park audi

     

  2. Pull the hood release under the dashboard on the driver's side. Next, go to the front of the car and release the hood latch.

  3. Locate the battery at the back of the engine bay, above the firewall. If you have a newer Audi, you need to remove the plastic cover which is held in place with plastic retainers. open trunk to access battery

  4. Use a 10mm wrench to loosen the nut on the negative post. Disconnect the negative battery terminal from the battery.1995-2020 Audi model Change car battery at home negative termnial
  5. Next, use the 10mm wrench again to disconnect the positive battery terminal.
  6. Remove battery hold-down bracket.  In most cases, this will be a 5mm Allen bolt. In a few cases, it may also be a T40 Torx bolt. 
  7. Lift the old battery and remove it. Carefully lower the new battery in the battery tray. Have another person help you with this step. 
  8. Reinstall the battery bracket. 
  9. Use a battery terminal brush to clean the battery terminals. 

  10. Connect the positive battery cable and tighten the 10mm nut. Ensure the terminal is secure and doesn't move or it can't be twisted. 

  11. The last step is to connect the negative cable. Tighten the 10mm nut on the negative clamp. When possible use battery fiber washers to prevent corrosion of the battery terminals. 
  12. Spray battery terminal protector on the battery posts and clamps. A battery protector helps seal the metal surfaces. It helps reduce corrosion and improves current flow.
  13. Replace the battery cover. 
  14. Start the engine.

Symptoms of a bad battery

  • Audi does not start
  • Battery dead or does not hold a charge
  • Engine cranks very slow
  • Audi has no power or lights

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Thank you! 

Visitor
Member since 2020-09

How has the battery performed so far without the coding? Have you had any issues?

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Visitor
Member since 2020-09

How to change an etron battery is so much difficulties

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Visitor
Member since 2020-09

The guide is helpful and I think it would be good if you mentioned how just the labor costs of replacing an Audi battery can be $70-$100! Doing this yourself is a cheaper way for sure. Also, if you go to a dealership, they will probably try to rip off by selling you an overpriced battery claiming how it works better than any other. That is also untrue, because you can use any 'off-the-shelf' batteries such as Duralast or even Diehard.

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Visitor
Member since 2020-09

Don't you have to set the battery code in the Audi?

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Visitor
Member since 2020-09

Don't you have to set the battery code in the Audi?....Audi A6 2010.There are videos suggesting that you should only let the dealership do it so that the code can be entered and sync the electronic?

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Visitor
Member since 2020-09

You have to keep the battery memory powered up or it will be wiped. New battery or not, you will have dead car at that point.

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Visitor
Member since 2020-09

We will find out about the CODING issue as I just purchased a Champion H8 compatible fit from Pep Boys with 25% OFF for $97 without CODING it... I will advise long term effects as day 1 is perfectly fine so far.

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jessicabeckwith
Member since 2020-07

Has everything continued to work fine without the code reset?

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