An Ignition Interlock Device (IID), also known as a car breathalyzer, is a device installed to the ignition system of a vehicle. To start the car, the driver must provide a breath sample using the device to turn on the vehicle. The breath sample provided must have a blood alcohol concentration (BAC) that meets or is below the legal limit.
Car breathalyzers are usually mandated by law for those convicted of a DUI; however, just having the device installed isn’t enough. Failing to maintain compliance with your IID can have legal and costly consequences.

Legal Repercussions
Failure to comply with your IID Program can lead to serious legal consequences. Driving without an IID or tampering with the device can lead to license suspension or revocation. It will take longer to regain your restricted license, and there may be a time extension to your IID program.
Financial penalties include fines and court fees that can cost up to $5,000 or more. Some states may even impound your vehicle, adding to the expense. In certain jurisdictions, non-compliance can even lead to jail time, potentially leading to additional misdemeanor or felony charges, depending on state laws.
Common Compliance Practices
- Use the Device Properly: During your interlock installation, consult with the technician to receive thorough training on the use of the device.
- Avoid Triggers: Be aware that substances beyond alcohol, such as certain foods, drinks, and medications, can also influence your BAC.
- Maintenance and Calibration: Make regular appointments to ensure your device is working correctly and adhere to the required calibration schedule. Depending on your ignition interlock program, calibration can be every 30, 60, or 90 days.
- Keep Accurate Records: Maintain a log of all tests, maintenance appointments, and any issues encountered with your ignition interlock device.
- Communicate with your Provider: Immediately communicate with your IID Provider if you encounter any malfunctions with your device, see any false positives, or see any warning lights.
- Understand your State’s Laws: Familiarize yourself with any DUI Laws or IID Maintenance regulations in your state, as laws can vary from state to state.
- Separate Fact from Fiction: When researching your device, be wary of misinformation and rely on credible sources. If you’re unsure, call your IID provider.
Ignition Interlock Device compliance is a legal requirement for DUI/DWI offenders, impacting license restoration and preventing further legal consequences. LifeSafer Ignition Interlock understands that the process can be challenging, so customer care is offered 24/7. Their website also offers helpful resources, including state information, answers to frequently asked questions, and troubleshooting tips. Whether you have a quick question about your device, a concern about your program, or need assistance with any issue, LifeSafer representatives are always a phone call away.