Dar de alta de un coche/ dar de baja definitiva a un coche

Dar de alta de un coche/ dar de baja definitiva a un coche
 

How can we say dar de alta/ baja definitiva de un coche?
darse de baja del telefono, darse de baja de la luz, de una suscripción a una revista etc....

You can say to register or deregister a car/ to surrender a car registration or title. The title is the legal document of the registration.
You can subscribe or unsubscribe to a magazine, or cancel a magazine subscription.
You can cancel or activate service of just about anything like electricity or phone.