Ignition Interlock Device (IID) Guide
Everything you need to know about California's IID requirements — approved devices, installation standards, costs, reduced fee assistance, exemptions, and all official DMV forms.
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What is an Ignition Interlock Device?
An Ignition Interlock Device (IID) is a breathalyzer wired into your vehicle's ignition system. Before you can start the car, you must blow into the device. If your breath alcohol concentration (BrAC) is above the preset limit, the vehicle will not start.
The device also requires random rolling retests while you're driving. You'll need to provide a breath sample of at least 1.5 liters for both the initial test and retests throughout your trip.
IIDs must be serviced regularly (typically every 60 days) for calibration, data download, and inspection. Failure to service on time, or any tampering/bypass attempts, are reported to the DMV and can result in additional suspension or a pause in your IID restriction term.
Who Is Required to Install an IID?
Under California's Statewide IID Pilot Program (effective January 1, 2019 through January 1, 2033), the following DUI offenders must install an IID:
First DUI Offense
6 months IID
Allows restricted driving privilege during suspension period
Second DUI Offense
1 year IID
Required for license reinstatement
Third DUI Offense
2 years IID
Mandatory with no early removal option
Fourth+ DUI Offense
3 years IID
Maximum restriction period
⚠️ Important: The pilot program applies to DUI offenders convicted of a DUI involving alcohol or a combination of alcohol and drugs, with offense dates between January 1, 2019 and January 1, 2033.
DMV-Approved IID Manufacturers & Devices
Only DMV-approved Breath Alcohol Ignition Interlock Devices (BAIIDs) can be used. Here are all 15 approved manufacturers:
| Manufacturer | Phone | Approved Devices |
|---|---|---|
| A&A Interlock, LLC | (800) 611-6523 | AT 230 |
| Intoxalock | (866) 438-5535 | 1001A |
| Clear2Drive | (888) 663-9847 | Series 5000 |
| Alcohol Detection Systems, Inc. | (855) 450-0064 | Determinator, Determinator 2 |
| Guardian Interlock Systems | (800) 489-4885 | AMS 2000, AMS 2500 |
| Best Labs, Inc. | (877) 715-2253 | FR 9000, WC 9000+ |
| Low Cost Interlock Inc. | (844) 218-5396 | LCI-777 |
| #1 A LifeSafer, Inc. | (800) 210-8087 | Lifesafer FC-100, L250 |
| ALCOLOCK | (877) 258-5696 | ALCOLOCK LR, ALCOLOCK GR, WR3 |
| RoadGuard Interlock | (800) 332-6858 | Draeger INTERLOCK® XT, Draeger INTERLOCK 7000 |
| Smart Start, Inc. | (866) 348-4286 | SSI 20/20, SSI 20/30, SSI Flex, SSI 2035 |
| Smart Alco Solutions, LLC | (844) 425-2627 | Alcobrake A-200 |
| Alcohol Analytics Systems LLC | (844) 748-1185 | AAS 2.0 |
| A Simple Interlock, LLC | (866) 698-7113 | Co-Pilot |
| Autosense International Inc. | (800) 498-9071 | Alco-Sense Ultimate |
Source: California DMV Approved BAIID Manufacturer List
Costs & Reduced Fee Assistance
Typical IID Costs
- Installation$70 – $150
- Monthly lease/rental$60 – $90/month
- Calibration (every 60 days)$25 – $50
- Removal$50 – $100
- Total (6-month program)$500 – $900
Reduced Fee Assistance
If your income falls within Federal Poverty Level guidelines or you receive CalFresh benefits:
Income verification required: federal tax return, 3 months income statements, EDD benefits, or CalFresh verification.
Installation Standards (BAR Requirements)
Per California Business and Professions Code §9882.14, all IID installers must meet strict standards:
- ✅Customers or unauthorized persons cannot observe installation, maintenance, or servicing
- ✅Installer must have all required tools, test equipment, and manufacturer manuals
- ✅Adequate security to prevent access to tamper seals or installation instructions
- ✅Vehicle mechanical and electrical systems must be screened before installation
- ✅Installation must follow manufacturer instructions and accepted trade standards
- ✅IID must be verified as functioning properly after installation
- ✅Installation must not affect IID performance or impede safe vehicle operation
- ✅When removed, vehicle must be restored to original condition — all severed wires permanently reconnected with heat shrink tubing
IID Exemptions
🚗 IID Program Exemption (No Vehicle)
You may qualify if you meet ALL of the following:
- • You do not own a vehicle (PNO vehicles do NOT qualify)
- • You do not have access to a vehicle at your residence
- • You no longer have access to the vehicle used at arrest
⚠️ Must submit DL 4062 within 30 days of suspension/revocation notice. If approved, you must serve your full suspension/revocation term with no restricted driving privilege.
📄 Download DL 4062🌎 Out-of-State Exemption
If your DUI occurred in California but you reside in another state, you may qualify if:
- • You have completed a California DUI treatment program
- • You have not completed your mandatory IID restriction period
Must submit DL 4062 (check Out-of-State box) + one acceptable residency document.
📄 Download DL 4062🏥 Medical Exemption
If you have a medical condition that prevents you from breathing with sufficient strength to activate the IID (minimum 1.5 liters breath sample), you may qualify for a medical exemption.
Both the driver and medical provider must complete the DL 4063 form. Must be submitted within 30 days. If approved, you will NOT receive a restricted driving privilege.
📄 Download DL 4063📧 How to Submit Exemption Forms
E-mail completed forms to:
DMVOPSIIDEXEMPTIONS@dmv.ca.govQuestions about DUI suspension or revocation:
Mandatory Actions Unit: (916) 657-6525Downloadable DMV Forms
DL 4062 — IID Exemption Request
No-vehicle or out-of-state IID exemption
Download PDF →DL 4063 — IID Medical Exemption
Medical condition preventing IID use
Download PDF →DL 921 — Notice of Non-Compliance
Report IID tampering, bypass, or missed service
Download PDF →DL 923 — Notice to Employers
Notify employer of IID restriction
Download PDF →DL 925 — IID Installation & Removal Request
Request eligibility check for IID install/removal
Download PDF →DL 4006 — Application for Termination of Action
Out-of-state residents requesting termination
Download PDF →SR-1 — Report of Traffic Accident
Report traffic accident to DMV (required within 10 days)
Download PDF →🏛️ Statewide IID Pilot Program (2019–2032)
California's Statewide IID Pilot Program requires all repeat and injury-involved DUI offenders (alcohol or alcohol + drugs) convicted on or after January 1, 2019, through December 31, 2032, to install an IID. Participants may immediately comply without serving any suspension period.
Source: California DMV
Mandatory IID Restriction Periods
| Prior DUI Convictions (10 yrs) | Non-Injury (VC §23152) | Injury (VC §23153) / Manslaughter |
|---|---|---|
| 0 (first offense) | N/A | 1 year |
| 1 | 1 year | 2 years |
| 2 | 2 years | 3 years |
| 3 or more | 3 years | 3 years |
| 1+ prior felony | 3 years | 4 years |
📋 Requirements for IID-Restricted License
- ✅ Clear all other outstanding suspensions/revocations
- ✅ Install IID and submit Verification of Installation (DL 920)
- ✅ Provide DUI Program Enrollment (DL 107) or Completion Certificate (DL 101)
- ✅ Provide California Insurance Proof Certificate (SR 22)
- ✅ Pay all applicable reissue, restriction, and administrative fees
🍷 First-Time Alcohol Offenders
Court may order IID for up to 6 months. Without court order, you may opt for IID (up to 6 months) or employment/treatment restriction (1 year).
💊 Drug-Only Repeat Offenders
Not subject to mandatory IID. May qualify for IID-restricted license after serving 1 year of suspension/revocation.
🔬 Admin Per Se (APS)
May opt for IID immediately — 4 months (1st offense) or 12 months (repeat). IID time credits toward mandatory period if convicted.
💰 Reduced Fee Assistance (Federal Poverty Level)
If your income qualifies, you pay a reduced percentage of IID program costs:
| Income Level | You Pay |
|---|---|
| 100% FPL or below | 10% |
| 101–200% FPL | 25% |
| 201–300% FPL | 50% |
| CalFresh recipients | 50% |
| 301–400% FPL | 90% |
Required docs: prior year tax return, 3 months income statements, or EDD unemployment verification.
⚠️ IID Non-Compliance
All non-compliance MUST be reported to DMV and can result in suspension, revocation, or a pause in your IID term:
- • Bypass attempts — trying to circumvent the device
- • Tampering — physical interference with the device
- • Removal attempts — trying to disconnect the device
- • 3+ missed service appointments
- • Failure to service within 60 days
Installers report non-compliance using form DL 921, faxed to DMV within 3 working days.
Driving for Work with an IID
Under CVC §23576, if you're required to drive for work and the vehicle is owned by your employer, you may operate it without an IID installed if:
- • Your employer has been notified of your IID restriction
- • You have proof of notification in your possession or with the vehicle
- • You are NOT an owner or partial owner of the business
Use form DL 923 to formally notify your employer.
📄 Download DL 923Need Help with IID Requirements?
Get guidance on IID installation, reduced fees, and license reinstatement.
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