When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I was a victim of the leaking firewall grommet and the passenger front seat floor got flooded. This was about 10 months ago, but I think this issue I am having is a result of that.
Its a 2009 g37s. My battery drains often and frequently (need to jump it every other start). I think the issue is the bcm. When the car is completely powered off, I sometimes see the key icon flashing on the dash and hear a clicking (see videos below). The clicking appear to be coming from inside the bcm. Everything works on the car, except the battery draining. Does it sound like the entire bcm needs replaced, or is there some module or just part of it that could be related to the key icon flashing where I could just replace that? When I unplug the green connector seen in the below photo, the clicking stopped (maybe that's because I am killing power to it though)
below is a video of the clicking sound
https://youtu.be/KAfgIbtTD8M
and this is a video of the light on the dash blinking
https://youtu.be/mcmuFVG6E28?feature=shared
any suggestions where to get a bcm without dropping $800.
Thank you all very much for reading and any thoughts are appreciated.
Last edited by Scottfreidel; 04-07-2024 at 12:51 PM.
1. Is the light on the cluster really flashing that fast?
2. Can you confirm 100% that the clicking is coming from the BCM? A long screwdriver placed on the side of the module with your ear to the handle will help to confirm.
3. Are there any codes?
If either #'s 1 or 2 are true, then more than likely the BCM will need to be replaced. Keep in mind that replacement WILL REQUIRE syncing (programming) to your car.
9.3amp parasitic draw, every 15 seconds while powered off.
Scott, did you wind up replacing the BCM? Your description of the battery drain while everything else in the car working fine, aligns with my symptoms. I do not see a single dash light nor hear any clicking like you've captured (so far).... I have pinpointed the parasitic draw to be through the Fusible Link (bottom right 3 part position for 40/30/50amp FL) in the fuse box directly in front of the battery, labeled for the Power Windows, ABS ACTR, and VDC... It's literally shooting up over 9.3amps every 15 seconds or so, while parked, so after a couple days the battery is dead. I'd love to learn anything else you encountered or what you wound up doing to solve your scenario, if you don't mind sharing.
Thanks,
JPSwain4
04-07-2024, 12:41 PM
