WARN, FAIL and VIOLATION on Your Interlock Device

interlock device testing

At Smart Start, a successful and seamless Interlock Device program is our number one goal for all our clients. We do understand, however, that a warn, fail or violation could occur as a test result on your Device.

So, what do these types of results mean?


A warn reading means that alcohol is present in your breath sample, but was below your state’s fail level. The Interlock Device will not stop your vehicle following a warn result. Be cautious, however. It is possible that you could fail subsequent tests if you decide to continue driving.


A fail result means that alcohol is detected at or above your state’s specific fail level. It may not mean that you are at the violation level indicated in your state’s standards. For initial tests, you will not be able to start your vehicle. If you need assistance, our 24/7/365 customer service center is available, even during weekends and holidays, at 800-831-3299.


A violation is a little different than a fail reading.

Violations could mean the Interlock Device detected alcohol at or above your state’s fail level, but there are other reasons as well. For example, if you missed any of your tests, or the Device detected tampering, circumventing, bypassing or disabling of the Device, this will be a violation result.


violation lock day on smart start interlock device

An example of a Violation Lockout screen reading on your Interlock. Some states may not list a countdown on your Interlock Device. This means you will need to visit a Smart Start service center.

Keep in mind that if the allowable number of violations in your state occurs, your Device will go into Lockout Mode. Some states require that the Lockout Mode occurs if you receive one violation. Visit this blog to learn more about Lockout Mode and how you can quickly get back on the road again. You can also call our 24/7/365 customer care center at 800-831-3299 for any help that you need.

Don’t forget, our website is a resource for you if you have any questions about your Device. You can read general Interlock FAQ’s or your state’s regulations on Interlocks.

Do you need to make an Interlock Device appointment? We can also provide you a quote. Call Smart Start today at 800-831-3299 or fill out our quick and simple online form.