If you have an ignition interlock device (IID) installed in your car, you may be wondering if you can change the battery yourself or if you need to take it to a professional. The answer depends on the make and model of your IID and the type of battery it uses. Some IIDs use a regular automotive battery that can be changed by anyone, while others use a sealed, maintenance-free battery that must be replaced by a certified technician.
If your IID has a regular automotive battery, changing it is pretty straightforward. Just disconnect the old battery and connect the new one in its place. Make sure to reconnect the negative (-) terminal first, followed by the positive (+) terminal. Once the new battery is connected, turn on your car to test that everything is working properly.
If your IID has a sealed, maintenance-free battery, however, you'll need to take it to a certified technician for replacement. These batteries cannot be opened or serviced by anyone other than a trained professional. Trying to change them yourself could damage the IID and void your warranty.