How to match the spare car keys?

This depends on whether the car keys have anti-theft chips. If you don't have a chip, you can find a store with a key and get a spare key with a sliding tooth. If you have an anti-theft chip, you need to use a professional computer with a key. The specific operation steps are as follows:

1. Insert the new key into the ignition switch.

2. Select the matching vehicle type.

3. Select Add Key.

4. When matching, the dashboard key icon will flash.

5. At this time, the number of keys is 2, which proves that the spare key has been added and the operation is completed.