F31 30d

ToilandTrouble · 11-06-2025, 03:04 AM

Can anyone with a F31 330d tell me what their current draw is with the ignition on? Bimmerlink has the battery current in the sensor section.

Mine shows as 8a. Headlights off, so just angel eyes as DRL. Interior lights off, just door lights etc on. All other auxiliaries off. Seems high? Or is this a electrical aux water pump I'm seeing?

Billfitz · 11-06-2025, 07:13 AM

8a at 12v is only 96 watts. The iDrive computer is likely responsible for most of that.

ToilandTrouble · 11-06-2025, 10:46 AM

Quote:

Originally Posted by Billfitz

8a at 12v is only 96 watts. The iDrive computer is likely responsible for most of that.

Yeah fair point. I think the issue is I was sat with the ignition on for such a long time, it flagged a low battery.

Did a manual test with a multimeter and camera in the boot. Like 10a just beefore locking, drops to 6 for exactly 3 minutes, then dropped to 100mA - lowest decimal on the 10a meter scale, and it was flickering to zero, so I'll say 75mA or less. Sounds fine to me, phew!

11-06-2025, 03:04 AM	#1
ToilandTrouble New Member 2 Rep 17 Posts Drives: F31 330d Join Date: Jan 2025 Location: Scotland iTrader: (0)	F31 30d - ignition current draw Can anyone with a F31 330d tell me what their current draw is with the ignition on? Bimmerlink has the battery current in the sensor section. Mine shows as 8a. Headlights off, so just angel eyes as DRL. Interior lights off, just door lights etc on. All other auxiliaries off. Seems high? Or is this a electrical aux water pump I'm seeing?
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11-06-2025, 07:13 AM	#2
Billfitz General 9834 Rep 18,386 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	8a at 12v is only 96 watts. The iDrive computer is likely responsible for most of that.
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