Hi I seem to have a parasitic draw that's draining my battery. With everything switched off an amp clamp is showing a draw of 0.4 amps. Strangely though when I close the door and the interior light is on this current drops to almost 0 then, when the interior light dims and goes out, the current climbs back to 0.4 amps again. I've taken the interior light fuse out but the current remains constant. I'd be grateful for any suggestions as to why this is happening. Thanks in advance.
If it goes to 0 when ~500 mA of lights are on, I would first verify the calibration and zero point on the amp clamp.
/.randy
Does you clamp have the option of using leads? If so I’d use them just to be sure. Your working with pretty low amperage. Most meters are good to 6-10 amps. What time frame is the battery going flat in.
The Z3 has a draw of about 40 mA when asleep to drive unlock monitoring , radio codes, clock etc. Don't expect it to go to Zero mA.
1999 2.8L Z3 Roadster,
2000 3.0L Z3 Roadster,
There is only one thing more pleasurable than working on a Z3, that's driving it top down on a fine day.
Maybe this method will help. I’ve not tried it
https://youtu.be/lRcj1fQcWwU
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Thanks for the replies, I'll try the fuse switching method to try to pinpoint the module causing it. The battery takes about 5 days to drain but I've got it on a conditioning charger meantime.
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