Interlock Installation and Monitoring

MVD is making computer system changes to the ignition interlock program. We are working to get this done quickly and we apologize for any inconvenience during the transition.

An MVD-authorized company must install the interlock. Check the website or call the toll-free number for any company listed below for the availability of service in your area and associated costs. If you have an interlock requirement in multiple states please ensure that the manufacturer you choose can satisfy both states at the same time. This will help prevent you from obtaining an interlock more than once.

Once installed in your vehicle, the interlock device must be calibrated and inspected by a certified installer every 77-90 days. If the device detects any tampering, circumvention, or malfunction, you may be called back into the service center prior to your 77-90 day appointment.

Drivers who do not comply with interlock requirements are reported to MVD and may have the period of time for use extended. In some cases, their driving privilege may be canceled, suspended or revoked.

A.A.C R17-5-604(E) A person whose CIID was installed prior to July 1, 2018, that does not meet all the requirements of Subsection (D) shall return to the person’s IISP by October 1, 2020 to exchange the CIID for a CIID that meets all the requirements of Subsection (D).  (You must get a Camera!)

Please Note: Have your interlock device installed first and then reinstate your driver license. Specific steps are required to establish a starting point for your required ignition interlock time frame. You can reinstate online or visit an MVD or Authorized Third Party office.

Reinstate your driver license online



If you have a complaint about fees charged, please contact your provider directly. 

If you have a complaint about the service you received or the device that was installed, please describe your issues, and include your full name, date of birth and Arizona driver license number, as well as the name and location of the interlock provider, and mail to this address:

Motor Vehicle Division
Ignition Interlock Unit
P.O. Box 2100
MD 530M
Phoenix, AZ 85001

Or, contact MVD