What Causes Ignition Interlock Problems in Cars?


Quick Answer

Ignition Interlock devices are devices that measure the alcohol content in breath and allows the driver to start the vehicle only if the alcohol content is less than the set value. The drivers can face ignition interlock problems mainly because of not complying with the timely servicing of the device.

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Full Answer

The use of the device requires the driver to service it every 60 days, or could be more often, depending on whether there are violations. It is mandatory to visit the service provider for extraction and calibration of the data. A couple of days prior to the servicing appointment, a light flashes on the unit and continues to remain lit after the scheduled date along with a tone to indicate the scheduled servicing overdue.

If the driver of the car fails to report to the service center during this period, the interlock device enters a permanent lockout condition to block the use of the vehicle. In addition to problems faced due to untimely servicing, extreme temperatures can present problems to the ignition interlock devices. In very hot climates, the devices need to be protected to maintain the efficiency while, in very cold climates, the warm up time needs consideration before performing the breath test.

Consumption of foods or mouthwashes that contain alcohol can send a wrong signal to the ignition interlock device and logs a fail. A different breathing pattern can also cause a failure in the test, thus causing a temporary lockout period.

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