How do I change the original amount of a fixed asset (vehicle purchase)

Greetings, @camaines.

You're referring to the Opening Balance of your fixed asset, right? If so, here's how to change the amount:

1. Go to the Gear icon, then select Chart of Accounts under Your Company.
2. Locate the account, then hit View Register. 
3. Click the Opening Balance amount and update the correct amount.

      4. Tap Save, then Yes. 

For additional information about the process, please check this article: Understand the QuickBooks Chart of Accounts.

To learn more on how to edit, merged, and add account numbers in Quickbooks Online, you may browse these articles: 

• Manage default and special accounts in your chart of accounts
• Use account numbers in your chart of accounts

Please let me know if you have any other concerns, and I'll get back to you as soon as possible. I'd be happy to help. Enjoy your weekend!