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Author Topic: Parasitic battery drain  (Read 160 times)

Offline hcmzah

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Parasitic battery drain
« on: March 22, 2025, 05:12:34 pm »
Hi all,

Struggling with this battery drain I have. Car is drawing 150mA when off. If I pull out F48/SB48 from the engine bay it drops to around 20mA.
The fuse is for the Vehicle electrical system control module (j519). It seems like this controls a lot of things.

I've done a scan with VCDS and I do have a code for the passenger rear door control module - defective. However, I've disconnected this and the draw is still there. Also tested fuses for this.

Does anyone know what F48 controls? Or any advice? Thank you

2007 BWA, Manual