How to Replace the Audi TT Battery

When a battery becomes old or damaged, it will no longer hold a charge or be able to start a vehicle. Audi TT's are not exception to this fact. When an Audi TT battery no longer functions properly, it needs to be replaced immediately to allow the car to work and be driven.

1. Pull the switch inside the car that operates the hood release. Open the hood and prop it open.


2. Use a 3/8 ratchet to remove the plastic box that covers the battery. There should be two bolts that hold the plastic cover in place. Remove each bolt and set it aside. Remove the cover to access the battery.


3. Remove the negative battery cable from the battery. This is the black cable. Once the negative battery cable has been removed, remove the positive cable as well.


4. Use a wrench to remove the relay box that is located on top of the battery. Set the relay box aside.


5. Pull the battery straight up to remove it from the vehicle. Most batteries have a strap attached. Use the strap to help remove the battery and carry it.


6. Put the new battery in the old battery's place. It should drop into place easily.


7. Place the relay box on top of the new battery and use the wrench to bolt it back into place.


8. Reconnect both the negative and positive battery cables, and use the wrench to secure them to the new battery.


9. Put the battery cover back on the battery and push down on it to secure it into place. Replace both bolts that hold the cover in place.


10. Close the car's hood and start the car to make sure the new battery is functioning properly.