Re: Battery Drain and Strange noise coming from BCM Area
There’s a small fan in the ECU/BCU/Relay control module box at the bottom. There could be an issue with this or you could be having an issue with the alarm
The alarm is located in the cowl (fresh air intake area) under the wipers right around the ECU/BCM/ relay module box.
Lots of posts here on how the test to remove alarm.