Why is a vehicle in a 'pending' state?

For some brands the activation might be delayed. This is because the car manufacturer did not yet approve/confirm the connection.

This can happen for the following brands:

Although the approval process often completes automatically, there are some things you can do. Make sure you complete all steps as described in the guides for your specific brand, which can be found here. In some cases, driving or charging the vehicle can also trigger the activation.