This is a reminder of an upcoming appointment.  The device will continue to function as usual.  If you miss an appointment you have 7 days to reschedule before the device will go into lockout mode, preventing the vehicle from being started.


Here are answers to the most commonly asked questions about IIDs

Q: Can someone use a balloon or other air source to mimic human breath?

A: No. The devices currently available have anti-circumvention techniques, which cause the IID to abort phony breath samples.

Q: Can a person with an IID restriction have someone else take the breath test for the driver to start the vehicle?

A: Not legally. Although other drivers may operate the vehicle if they use the interlock.

Q: Will the IID unit lose all memory if the battery is disconnected?

A: No. The unit has a back up lithium battery to protect the data log's memory.

Q: If a driver gets stranded and thinks the IID unit is causing the problem, is there anything he/she can do?

A: Call our 24-hour live support line 800-373-5625.


A: If someone tries to do this, the unit will randomly ask for breath tests while the vehicle is running. If a sample is not given when requested, the device logs a violation and with some devices, the horn starts to honk until the vehicle is shut off.

Q: What happens when the driver forgets his/her service appointment?

A: The device will flash service and lockout indicating a missed calibration appointment.

Q: What If the driver is taking a medicine with an alcohol base?

A: Alcohol is alcohol. If any product containing alcohol is consumed the device will detect it and respond based on alcohol content.

Q: What if the driver uses mouthwash in the morning and the mouthwash has an alcohol base?

A: Again, alcohol is alcohol. If the driver does not allow sufficient time for the alcohol to dissipate from his/her mouth, a FAIL will be registered in the memory.

Q: What happens when a driver fails the breath test?


Q: Can others besides the participating driver drive the IID-equipped vehicle?

A: Yes. However, any intended driver must take and pass a breath test in order to start the vehicle. All other possible drivers should be trained on the operation of the device. The person with the IID restriction is responsible for all readings recorded by the device.

Q: What happens when the IID-equipped vehicle needs repair?

A: The driver needs to contact the IID service provider before having repairs conducted on his/her vehicle in case the repair shop has questions about the IID. Documentation must be provided if the power to the vehicle is interrupted as the unit will record the power disconnect and then reconnect.

Q: If the IID unit malfunctions, will it shut the vehicle off?

A: No. The IID unit has no means of interrupting vehicle operation once it is started.

Q: What happens if the vehicle stalls in traffic?

A: The IID unit permits the driver to restart the vehicle without having to conduct another breath sample, but a breath sample will be requested shortly after restarting.

Q: What happens if the driver is out of California and experiences problems with his/her IID unit?

A: Most states currently have IID programs with service centers to assist them. Drivers are instructed to contact the primary service center to be routed to the closest center for assistance.

Q: Is there any low income program available?

A: Per Section 23575.3 of the Vehicle Code, individuals whose income falls within federal poverty limits may qualify to receive a discounted rate on your ignition interlock device.  Qualification is based on providing appropriate documentation.  Ask today to find out if you may qualify. More information here.

Q: Will installation of the IID damage the vehicle?

A: No. The IID unit is only connected to the wiring under the dash and the hood. At the end of the program, this wiring is restored to pre-ID installation conditions.

Q: Will the requirements to take a "running test' cause the driver to take his/her eyes off the road creating a hazardous situation?

A: No. When the IID signals for a retest, the driver has a few minutes to provide the sample or to pull over to the side of the road in a safe area to provide the breath sample. There are no buttons to push; the driver must only breathe into the unit to complete a breath sample. This is much simpler than using a cellular telephone or tuning a state-of-the-art car StereO.

Q: How often does the device need a calibration check?

A: Typically, every 60 days.

Q: Can the device be tampered with by computer?

A: No. Proprietary software and a special interface connection are needed to communicate with the device.