Smart Start Ignition Interlock
21 Car Audio2001 N 35th Avenue
Phoenix, AZ 85009
#1 Ignition Interlock from $1.99/day*. Same-day installation available
Services at this Location:
- Sign Up
- Manage Account
- Informational Videos
Book an Installation
With the thousands of locations across the nation, 24/7 customer support, no hidden fees and the most reliable device on the market, Smart Start Ignition Interlock devices are hands-down the best way to get you back on the road fast.
Get a quick and easy IID installation with Smart Start! Get started today!
¡Obtenga una instalación rápida y fácil de IID con Smart Start! ¡Empieza hoy mismo!
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Why Choose Smart Start Ignition Interlock?
From $1.99/Day* - No Long-Term Contracts
Bi-weekly payment options designed to fit your budget.
IGNITION INTERLOCK COSTS3,000+ Locations - Same Day Install
Quick installs by skilled technicians at convenient U.S. locations.
FIND A LOCATIONDiscreet, Easy-to-Use Devices
Reliable, hygienic devices with guided tests and easy English-Spanish switching.
SMART START DEVICES24/7 Knowledgeable State Program Experts
Multilingual support trusted by over 1 million people, ready when you need us.
TALK TO A PROGRAM ADVISOR#1 Ignition Interlock Device Provider at 21 Car Audio in Phoenix
Drive smarter for less with Smart Start Ignition Interlock. We offer an Ignition Interlock Device (IID) designed and priced with you in mind. You deserve a device that is reliable and will get you through your IID requirement. () 201-341983":0,"() 335-559739":160,"() 335-559740":259}">
Our certified shop is located just off the I-10, on N 35th Ave, next to Isaac Middle School. You can find us inside 21 Car Stereo!() 201-341983":0,"() 335-559739":160,"() 335-559740":259}">
We provide service for Phoenix, Glendale, Tempe or anywhere in Maricopa County. Just 10 minutes away from the Phoenix Museum of Art and Encanto Park, there is plenty to do before or after your installation or calibration appointments.() 201-341983":0,"() 335-559739":160,"() 335-559740":259}">
Ignition Interlock Installation in Central Phoenix, Arizona() 342-45418":true,"1() 342-45529":true,"() 201-341983":0,"() 335-559738":40,"() 335-559739":0,"() 335-559740":259}">
We make your Ignition Interlock program simple, affordable, and reliable with 24/7/365 customer service and easy, quick tests. You’ll receive hands-on training with our friendly, licensed technicians until you are comfortable testing with your Ignition Interlock.() 201-341983":0,"() 335-559739":160,"() 335-559740":259}">
Schedule your installation at 21 Car Stereo by calling [shop_telephone] or fill out our online form below to schedule your installation appointment. Be sure to ask about any current state specials or discounts! You can also check here for more Smart Start locations in the Phoenix area.() 201-341983":0,"() 335-559739":160,"() 335-559740":259}">
Frequently Asked Questions
The overall cost of an Ignition Interlock Device is a combination of installation fees, monthly service fees, and removal fees. Exact pricing varies by state. To get a quote today, call (800) 831-3299 to speak with a friendly Program Advisor.
Once you have scheduled your Ignition Interlock Device (IID) installation with Smart Start, you will need to bring the following to your IID installation appointment in Arizona:
- Two valid forms of identification—one of which should include a photo of you.
- Proof of residence.
- Any and all court documents that may be relevant to your Ignition Interlock Device requirement or your restricted driving period.
- Vehicle registration. If you do not own the vehicle on which you’re installing the Ignition Interlock Device, or if that vehicle is not registered to you, you will need to bring a letter of permission from the registered owner stating that you are allowed to install an Ignition Interlock Device on the vehicle.
- The vehicle on which you’ll be installing an Ignition Interlock Device (IID).
If you have any additional questions or concerns about the installation process or what is required for a successful installation, please don’t hesitate to call our customer care team at (800) 831-3299. You can also click on the chat window below to begin a discussion with one of our customer care advocates.
You may be able to service your Ignition Interlock Device at any Smart Start service center nationwide. However, we strongly suggest checking with your state authority in Arizona before seeking service outside of your state. Find the nearest Smart Start service center here.
Typically, you will need to service your Ignition Interlock Device (IID) once every 30-60 days or as determined by your jurisdiction in Arizona.
Ignition Interlock Device violation criteria can vary by state. Any and all of the following may constitute a violation in Arizona:
- A skipped rolling retest
- Tampering with the Ignition Interlock Device in any way
- Any breath sample that registers a BrAC above .02 percent
- Missing your scheduled IID service appointment
Learn more about Ignition Interlock Device violations.
In Arizona, you can pay for your Interlock Device calibration via credit card at the Smart Start service center at the time of calibration or via the online Client Portal.
Nearby Locations
Rules of the Road
3314 W Catalina Dr
Phoenix, AZ 85017
OPEN NOW – Closes at 7:00pm
Services at this Location:
Sign Up, Manage Account, Informational Videos
Facil Insurance
3024 W Van Buren Street
Phoenix, AZ 85009
OPEN NOW – Closes at 5:00pm
Services at this Location:
Sign Up, Manage Account, Informational Videos
Smart Start of Arizona
3801 North 35th Ave
Phoenix, AZ 85017
OPEN NOW – Closes at 5:00pm
Services at this Location:
Installations, Calibrations, Drive Up
See What Everyone Says About Our Ignition Interlock
Excellent TrustScore Rating
June 19, 2025
"Great at explaining "
Jayden Yates.
United States
June 19, 2025
"Erica was great! She was friendly, efficient, and knowledgeable. She explained everything, provided all the information and made the registration process super easy. It’s nice to have a person like Erica helping you during an unfortunate time. "
Amber Fidone.
United States
June 19, 2025
"Was very helpful"
Shawn L.
United States