Whenever you see a notice that your ignition interlock device needs service, you must take your vehicle to a service center within the allotted time. If you don’t, you’ll experience a service lockout and need to call your local service provider for assistance.
In most cases, the interlock device can be unlocked remotely. However, some states require that the vehicle be towed to the service center. Typically, you will have a grace period of a few days to take your device in for service.