800-548-3636

of Oklahoma

FAQ2025-08-27T15:49:33+00:00

FAQ

Frequently Asked Questions

The Guardian Interlock device is a hand-held ignition interlock device (IID), attached to the electrical system of your car that measures the Breath Alcohol Content (BrAC) in your exhale. If this device detects alcohol above a pre-set limit determined by your state, your vehicle will not start. The device will also require that you perform periodic breath tests to ensure that you stay below that pre-set limit in order to continue driving your vehicle.

Your installation appointment will typically take about two hours. This time includes not only the device installation and calibration but also a full training session so that you are completely familiar with the operation of the ignition interlock device. Do not consume any alcohol for 24 hours prior to installation and avoid using any products that contain alcohol such as mouthwash.

Guardian’s device uses a simple blow and hum pattern-just say “D000” while exhaling for five seconds. It’s quick and easy, unlike other providers’ complicated, multi-step patterns. You will be required to blow in it to start the car, and retest periodically through your trip.

No, the interlock will never turn off a running vehicle. If a retest is missed or failed, a violation will be recorded, and the device will require early service.

Once your device is installed, you are required to return to the Guardian service center periodically in order for Guardian to download the event logs from your device and make it available to the monitoring authorities. This appointment is mandated by the state and must be at least every 60 days, unless a violation occurs. Your device will display the number of days until the next appointment whenever the device is powered up. Make sure you come on or before you scheduled appointment date in order to comply with this requirement. If you go past your scheduled appointment date, the device will give you 5 days to come in for service. If you go past the 5 day period, it will result in a lockout of the system.

The Guardian interlock device continuously monitors certain aspects of your vehicle, even when the ignition is turned off. As with all interlock devices, this requires a very small amount of battery power. With the Guardian device, it takes even less as there is an advanced “sleep” mode to conserve power.

Your vehicle can be driven by anyone who could drive the vehicle before the device was installed, however, they will be required to pass the same breath tests as you, and any test violations will be registered on your reports to the monitoring authorities. The Guardian service center technicians will train other drivers at no additional charge.

DOs

  • Rinse your mouth out with water before taking a test to avoid contaminants.
  • Use soap and water to clean the mouthpieces regularly. Dry before use.
  • Take retests when requested. You will hear two high-pitched beeps when it is time.
  • Clear any obstruction from your camera before testing, e.g. hats.

DON’Ts

  • Do not use mouthwash, hand sanitizer, perfume, or other products containing alcohol before starting your vehicle.
  • Do not allow others to blow into the device for you and then drive. This is a violation.
  • Do not blow smoke from a vape or cigarette into the device.
  • Do not leave your vehicle running unattended.

5-Star Service

Always friendly and willing to help out any way they can. Highly recommend!

Brooke Y, OKC

Compared to any other interlock provider, this place is the best hands down! Not only is it the best price, but they work hard to make sure you’re driving safely and legal. Anytime someone needs an interlock I send them here!

Cory W, Norman

Best interlock service with the least amount of hassle and least amount of fees! Definitely recommend!

Joe S, OKC

No judgement zone. Very professional and customer service is always beyond expectation.

William L, OKC

This place is incredible. They really care about their customers comfort and convenience and will go out of their

Nick H, Tulsa

I was late for my reset appointment, I called and got there right at closing time. The guys were just extra amazingly fast and super friendly. They care and are there for you. I am VERY pleased with their service.

Isaias V, OKC

Awesome people, very friendly and nice. This is my second time going to them. I highly recommend them.

Angie G, OKC

I came in expecting to get an interlock and Raven was so helpful. She asked if I was sure I needed one because some laws changed. She spent 2 hours on the phone trying to get a hold of DPS for me. Turns out I didn’t have to have one! I’ve never had someone be so helpful!

Erin N, Tulsa

If you have to have an interlock installed, this is the only company you should use. Unlike the other companies, Krissi and her staff at Guardian truly care about their customers. They treat you with respect and appreciate your

Eric F, Tulsa

They made a painful and embarrassing process much less of a hassle and made me feel comfortable. Also, they helped me kind of hide my device to be less conspicuous. Highly recommend.

Donal H, OKC
The service is great, the whole process is painless, the device is detachable and extremely easy to use. I would recommend this place 100%.
Brandon H, Tulsa

Had to switch to this interlock place after mine shut down. The prices are better, the waiting room is clean and inviting, and the staff is really friendly. This is the place to go.

Kyla P, Tulsa
Very affordable and understanding people. Can easily work with you if there’s a situation. 10/10 recommend!
Suzette L, OKC

I had an appointment and Raven was incredibly helpful and selfless. She found out for me that I didn’t even have to have an interlock. Guardian was the only one to do this for me. They saved me almost $2000 over the next year and a half!

Simon R, Tulsa
Great customer service, affordable and they get you in and out quick.
Jessica H, Tulsa

This place is amazing. The staff is very helpful and they truly care about giving you the best deals and work with your schedule. I highly recommend using Guardian in OKC.

Brittany B, OKC

This place is so clean and nice! All the workers are friendly and polite! Makes this much easier to want to do every month.

Shelbi W, Tulsa

This place is actually pretty awesome. Compared to other companies who charge twice as much for worse services!

Joseph M, Norman

Staff is friendly and knowledgeable and the equipment is superior to the competition.

Paul B, OKC

Very friendly staff and affordable installation and maintenance. They always answer my questions when I call.

Shanice S, OKC

Get Started with Guardian Interlock Today!

800-548-3636

Tulsa

OKC

OKC

405-942-5646

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