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Showing results for tags 'could it be the obd port?'.
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I have a 2001 Boxster. If I don't start it and let it run for a while every day, it won't start without charging the battery. I've replaced the ignition switch, after researching other threads on voltage drains. I've used a multimeter to check the ohms on each fuse, the only one that showed any was C3. I removed it, the drain was still present. My car insurance requires a device to be plugged into the OBD port, I unplugged it, and the amperage drain dropped from 400 milliamps to about 40. I waited two days without starting it, instead of the usual one, and it started. I know the sample size is small, but it's the first positive sign I've seen so far. I have a similar device in use on two other cars, and their batteries aren't impacted. Does anyone have a suggestion of what I should try next?