What if I have a false positive on my Ignition Interlock Device?

When you lose your license following an OWI conviction,  you must fight a long and tough battle to earn back privileges from the Michigan Secretary of State. Typically those privileges require you to equip your car with an Ignition Interlock Device, or BAIID.  A BAIID is a breath alcohol analyzer with computer logic and an internal memory. It connects with a motor vehicle's ignition and other control systems. The BAIID measures your bodily alcohol content [BAC], and keeps the vehicle from starting if your BAC is .025 or higher. The BAIID must include a camera capable of recording a digital image of the individual providing the sample. The device will also ask for random retests while the person is driving [called “rolling retests”].

Test failures, tampering, or other BAIID-related violations may result in an extension of the time before you can ask for another driver license appeal hearing, or may require your original license revocation/denial be reinstated.  If there are alcohol readings or other BAIID violations after the device is installed, the BAIID vendor will report them to the Secretary of State. In those instances, a re-revocation is almost guaranteed.  

Often times, you’ll be informed of violations without intentionally doing anything wrong, or without knowledge of specific violation. For example, you might be served a violation notice for “Tampering” with the BAIID while the car was in the service repair shop.  Other times, drivers are truly innocent (perhaps food or mouthwash caused the violation), but they don’t know how or where to prove their innocence. As a result, the Interlock violation can often be defended or mitigated at hearing. 

Daniel T. Geherin, founder of MiLicenseLawyer.com, has been an OWI and driver’s license appeals specialist for 25+ years. He’s conducted over 1,500 substance-abuse license reinstatement hearings at the Michigan Secretary of State, and has defended thousands of OWI charges throughout the State. His clients come from all over the State of Michigan, and all over the country. He’s helped reinstate over 350 Michigan licenses in the last decade alone. Dan is also the published author of The Michigan Drunk Driving and Driver’s License Handbook, which has a chapter on BAIID violations and false positives. 

Dan and his team frequently get calls from clients who worked really hard to back their driving privileges following a conviction for OWI, only to quickly lose them again for an Ignition Interlock Device violation.  This is especially true for people who “blew numbers” on the device. We’ve received calls like: 

“I used mouthwash (or ate food, or chewed gum, or used cough syrup) just before blowing into the Ignition Interlock Device, and blew a false positive; what should I do?”

“I don’t know what caused the device to lock me out; what are my options?”

“I drank last night, and thought I would be fine by morning; am I in trouble?”

If  you intentionally drink alcohol and then have a start-up failure, almost certainly you’ll face revocation of your license and possibly new criminal charges.  There’s simply no defense or excuse for that, especially if you were granted a license on the condition that you remain totally abstinent from alcohol.  

However, if you truly have a false positive (from food, mouthwash etc.), the best way to fight the violation is to IMMEDIATELY provide a sample of your breath, blood or urine to prove it wasn’t the result of beverage alcohol. Many police stations offer free Preliminary Breath Testing, and most urgent care clinics offer ETG tests (Urine Ethylglucuronide) which can confirm that you haven’t consumed alcohol in the proceeding 48+ hours.  Without these tests, the Secretary of State will assume that you drank alcohol and will impose swift and severe consequences. They just don’t believe claims of false positives without verification.  

If you’ve received notice of an Ignition Interlock Violation for a false positive or need help with your driver’s license reinstatement in Ann Arbor, and need assistance, please call us.  We are well-versed in the mechanics/administration of BAIID devices, and have successfully defended hundreds of BAIID violations.  We have a network of available experts to help testify about the BAIID malfunctions.  And, we never stop fighting for clients to return to the road lawfully and legally.

Geherin Law Group:  We are the KEY to putting you back in the driver’s seat. 

Best Driver's License Restoration Attorney Ann Arbor | Geherin Law Group, PLLC

Restore a Revoked Driver's License in Michigan | Geherin Law Group, PLLC

Meet Dan Geherin

Will My License Be Suspended Following a DUI in Michigan? | Geherin Law Group, PLLC

Geherin Law Group is ranked a Tier 1 firm for DUI/DWI Defense in Ann Arbor in 2022 by U.S. News
- Best Lawyers® "Best Law Firms".

Best Criminal defense lawyers in Ann Arbor Daniel T Geherin - Leading Lawyers 2024 Leading Lawyers - Daniel T. geherin Daniel T. Geherin Selected by Super Lawyers in 2022 Daniel T. GeherinClients’ ChoiceAward 2023 Dan Geherin - Peer Rated for Hightest Level of Professional Excellence Dan Geherin - Best Business of 2021 Martindale Hubble Preeminent Best Criminal Defense Lawyers in Ann Arbor 2020 Avvo criminal defense award Avvo Rating: 10 | Daniel T. Geherin - Top Attorney America's Top 100 Criminal Defense Attorneys 2018® Recipient Award DUI and DWI Avvo Award 2015 Avvo criminal defense award National Board of Trial Advocacy AV Preeminent Martindale-Hubbell Lawyer Ratings Dbusiness Top Lawyers Super Lawyers


Michigan License Lawyer - Geherin Law Group
Michigan Drunk Driving And Driver's Licence Handbook

Download a copy of


by Dan Geherin


Geherin Law Group, PLLC, represents out-of-state residents seeking removal of a Michigan license hold, as well as clients who live anywhere throughout the State of Michigan, including those in Ann Arbor, Adrian, Berkley, Battle Creek, Bay City, Birmingham, Bloomfield Hills, Brighton, Cadillac, Canton, Carleton, Chelsea, Dearborn, Dearborn Heights, Dexter, Detroit, Dundee, East Lansing, Ferndale, Farmington Hills, Flint, Garden City, Grand Rapids, Grosse Pointe, Hartland, Howell, Huntington Woods, Jackson, Livonia, Lansing, Kalamazoo, Livonia, Marquette, Milan, Monroe, Muskegon, Northville, Novi, Plymouth, Pontiac, Portage, Port Huron, Rockford, Rochester Hills, Royal Oak, Saline, Saginaw, Southfield, St. Clair Shores, Sterling Heights, Taylor, Tecumseh, Traverse City, Troy, Warren, Waterford, Westland, and Ypsilanti.

© 2024 by Geherin Law Group, PLLC. All rights reserved.
Disclaimer | Site Map | Privacy Policy

Website Hosting by Network Services Group, LLC | SEO by Michigan SEO Group