1. Open alldatadiy.com >> Log in to your account.
   

2. Click Account in the top bar.
   

3. Click Display/Renew Current Subscriptions.
   

4. Click Yes to extend the subscription for the desired vehicle.
   

5. Click Checkout.
   

6. Select your payment method below:

Use an activation code purchased from AutoZone

7. In the Gift Certificate field, enter the Subscription Code that is found on the back of the subscription card or on the back of the CD sleeve >> click Apply.
   

8. Select 12 Months or 5 Years >> click Continue.
   

9. Click Vehicle in the top bar for an updated list of vehicles and expiration dates.
   

Use a credit/debit card

7. If you have a discount code, enter it here >> click Apply. Otherwise, click Skip.
   

8. Enter payment information >> confirm that the address listed matches the address on file with your debit/credit card company >> click Submit.

• If the address does not match, update accordingly or the purchase will not go through.
  

9. Click Vehicle in the top bar for an updated list of vehicles and expiration dates.