Will Failing an Ignition Interlock be a Violation in Arizona?
Fail Ignition Interlock: Common Causes and How to Resolve Device Test Failures
Understanding Ignition Interlock Violations
Using an ignition interlock device brings stress to your daily driving routine. These devices detect even small amounts of alcohol on your breath and sometimes trigger false readings from common items like breath mints or mouthwash. The device cannot distinguish between a false reading and actual alcohol consumption, which puts you at risk each time you test.
Your state determines whether a failed test counts as a violation. Different rules apply based on your age and the number of failed tests. For example, if you are 21 or older, you may face a violation after two failed breath tests. Drivers under 21 might receive a violation after just one failed test. Missing or failing three rolling retests in a row can also trigger a violation.
Key factors that determine violations:
- Your age at the time of testing
- The number of failed breath tests
- Whether you missed required rolling retests
- Your state's specific DUI regulations
You receive notification before authorities take action against your driving privileges. This gives you time to request a hearing where you can challenge the violation. You can present evidence that the failed test resulted from a false reading rather than alcohol consumption.
Getting Behind the Wheel with a Restricted License in Arizona

When you face a DUI arrest in Arizona, your license can be suspended right at the scene or later in court. Most suspensions happen immediately after you fail a breath test or refuse to take one.
After your license gets suspended, you get 15 days before it actually takes effect. You can drive normally during this time. Use these days wisely to prepare for what comes next.
You can fight the suspension during those 15 days. Talk to a lawyer quickly so you have time to go to court and challenge it. If the court upholds the suspension, the penalties depend on how many offenses you have:
- First offense: 90-day suspension, possible jail time up to 10 days, fines up to $1,600
- Second offense: One-year suspension, possible jail time up to 90 days, fines up to $3,000
- Third offense: Three-year suspension, jail time from 4 to 24 months, fines up to $150,000
Restricted License Options
You don't have to wait out your entire suspension without driving. Arizona lets you apply for a Special Ignition Interlock Restricted Driver License. This allows you to drive anywhere in the state.
To get this restricted license, you must install a certified ignition interlock device in your vehicle. This device requires you to blow into it before your car will start. You need to complete at least 90 days of your suspension first. You also need proof that the device is installed and proof that you finished an alcohol screening from an approved provider.
The ignition interlock restriction means your vehicle won't start unless you pass the breath test. Breaking the rules can lead to more suspension time or criminal charges.
What is an Ignition Interlock Device?

An ignition interlock device (IID) is a breath-testing system installed in your vehicle to prevent drunk driving. Before you can start your car, you must blow into the device to measure your breath alcohol level. Companies like Smart Start provide these systems as part of ignition interlock programs.
The device works by blocking your engine from starting if it detects alcohol above a set limit. In most cases, this limit is 0.02% blood alcohol concentration. If you fail the initial breath test, the system locks you out for a short period before allowing you to test again.
Rolling retests happen while you drive. The IID will ask you to provide breath samples at random times during your trip. If you fail one of these tests, your vehicle will trigger an alarm. You must pull over safely, turn off your car, and provide another sample to turn off the alert.
The ignition interlock records all your test results and shares this data with monitoring agencies.
Ignition Interlock Violations

An IID violation occurs when you don't follow the program rules or fail to meet testing requirements. These violations can lead to serious consequences that affect your driving privileges.
Types of Violations and Their Penalties
A failed breath test happens when your BAC exceeds the allowed limit. If you're under 21, any failed test counts as a violation. Drivers 21 and older get one warning before the second failed test triggers a violation. This adds six months to your IID requirement.
Missing or failing a rolling retest creates problems too. You'll receive a violation after three instances of not providing a breath sample when the device asks. This includes shutting off your car during a retest request. Like failed breath tests, this extends your requirement by six months.
You must attend calibration appointments every 90 days. Skipping these scheduled checkups resets your time period and can suspend your license.
Tampering with or trying to bypass the device is taken very seriously. This violation adds six months and may result in criminal charges. Removing the device early has similar consequences. Your license gets suspended and the entire requirement starts over.
The only exception is when switching vehicles. You have 72 hours to move the device to another car, but you cannot drive during this changeover. A permanent lockout can occur if violations continue, preventing your vehicle from starting entirely.
Qualifying for a Six-Month Deferment

If you received a first-time DUI and must use an ignition interlock device for one year, you might qualify to remove it after six months. This option requires you to meet specific requirements and maintain good behavior.
You must satisfy all of these conditions:
- No other DUI offenses in the past seven years
- Your DUI was not classified as extreme
- No accident occurred during your DUI incident
- Completion of 16 hours of substance abuse education classes
- Zero ignition interlock test failures in the first six months
- Attendance at four required 90-day calibration appointments with reports sent to ADOT
- Your most recent calibration check occurred within 35 days
- At least six months passed since your reinstatement date
Once you meet these requirements, you can apply through the MVD or an authorized third-party office. If your application gets approved, the remaining six months become a probationary period. During this time, you will not need the device installed in your vehicle.
Tips to Avoid False Alarms With Your Ignition Interlock Device

False alarms create unnecessary problems when you use an ignition interlock device. You can prevent most false readings by following simple habits during your program period.
Before each test, rinse your mouth with water. This clears away any residue that might affect your reading.
Stay away from all alcoholic drinks completely. You should also skip mouthwash that contains alcohol and check labels on medicines like cold syrup before taking them.
Additional steps to prevent false readings:
- Skip breath mints and gum while driving
- Brush your teeth well after meals
- Pay extra attention after eating bread, pizza, or drinking juice since these items can break down in your mouth
Food particles and liquids can build up between your teeth and create fermentation. This process produces small amounts of alcohol that trigger false readings. Regular brushing removes these particles and keeps your device working correctly.
Get Support for Ignition Interlock Defense

Even when you follow all the rules, ignition interlock systems can fail or produce errors that result in violations. These violations can create serious problems if you depend on your car for work or daily needs.
When Problems Occur:
- Device malfunctions may trigger false violations
- System errors can happen despite proper use
- Mistakes in reporting can lead to penalties
If you think a violation was issued by mistake, you have the right to challenge it. Working with a criminal defense attorney can help you protect your driving privileges and present your case effectively in court.
Getting legal help quickly matters when you face DUI charges. Your decisions early on can affect both your court case and your ability to drive.
Call Arizona Criminal Lawyer at (602) 610-5019 to set up a private consultation. Taking action now gives you the best chance to protect your rights and your future.
