Audi Replace Battery in 15 Minutes
Can’t start your Audi due to a dead battery? Learn how to replace the battery by following the procedures below.
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
- Audi Car Battery
- The battery type is listed in your owner’s manual. It is also printed on the old battery.
- Common batteries used on Audi are the H8, H6, and H5.
- Battery Protector
- Mechanic Toolset Metric
- Battery Terminal Brush
- 5mm Allen Hex Bit
- or 7/32″ Allen Bit
Procedure
Park, your Audi on level ground, set the parking brakes, and remove the key from the ignition.
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. 
Locate the battery above the firewall at the back of the engine bay. If you have a newer Audi, you need to remove the plastic cover held in place with plastic retainers.
Use a 10mm wrench to loosen the nut on the negative post. Disconnect the negative battery terminal from the battery.
Next, disconnect the positive battery terminal using the 10mm wrench again.
Remove the 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.
Lift the old battery and remove it. Carefully lower the new battery in the battery tray. Have another person help you with this step.
Reinstall the battery bracket.
Use a battery terminal brush to clean the battery terminals.
Connect the positive battery cable and tighten the 10mm nut. Ensure the terminal is secure, doesn’t move, or can’t be twisted.
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. 
Spray battery terminal protectors on the battery posts and clamps. A battery protector helps seal the metal surfaces. It helps reduce corrosion and improves current flow.
Replace the battery cover.
Start the engine.
Symptoms of a bad battery
- Audi does not start
- The battery is dead or does not hold a charge
- The engine cranks very slow
- Audi has no power or lights
We hope you found this guide on replacing Audi dead battery helpful. Check these troubleshooting and repair guides for more help on your Audi vehicle.
How to change an etron battery is so much difficulties
How has the battery performed so far without the coding? Have you had any issues?
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.
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.
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?
Don’t you have to set the battery code in the Audi?
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.