[jamestwojames]

Car is 2007 328i Base sedan.
Hi Guys,
So yesterday I discovered that my battery was dead. At the same time I realized that id left my drivers seat door unlocked (It was closed, but the lock thing was in the upward, or unlocked position). I assumed that me leaving it unlocked somehow drained the battery because the car hadn't told itself that I was gone.
I wired another fresh battery that I had in the garage to the jump points in the engine bay, to see if I could get the car to start, and I kept hearing the fuel pump "priming" every once in a while once I did this, but did not pay any attention to it. Car wouldnt start, but the locks worked and I could at least open the trunk to get to the battery. Decide to pull battery and see if I could charge it up on my trickle charger and see if that would fix the problem.
Fast forward to today, battery is charged and holding its charge when sitting unplugged and idle just fine (wanted to make sure battery wasn't screwed). Plug it back in, car starts fine. But now I'm hearing the fuel pump prime every minute and fifteen seconds, even when the car is locked and the key is well outside of comfort entry proximity(they're in my room 60ft and four walls away). Why would my fuel pump be continuously priming, this seems to be why the battery drained, and how do I get it not to do that?
Thanks in advance.

[9352e90]

I have heard by fuel pump priming occasionally when the car is off after I have parked it. Never after the car has been off for a while. Has done this for years but never caused an issue.

[Chris S.]

Originally Posted by jamestwojames

Car is 2007 328i Base sedan.
Hi Guys,
So yesterday I discovered that my battery was dead. At the same time I realized that id left my drivers seat door unlocked (It was closed, but the lock thing was in the upward, or unlocked position). I assumed that me leaving it unlocked somehow drained the battery because the car hadn't told itself that I was gone.
I wired another fresh battery that I had in the garage to the jump points in the engine bay, to see if I could get the car to start, and I kept hearing the fuel pump "priming" every once in a while once I did this, but did not pay any attention to it. Car wouldnt start, but the locks worked and I could at least open the trunk to get to the battery. Decide to pull battery and see if I could charge it up on my trickle charger and see if that would fix the problem.
Fast forward to today, battery is charged and holding its charge when sitting unplugged and idle just fine (wanted to make sure battery wasn't screwed). Plug it back in, car starts fine. But now I'm hearing the fuel pump prime every minute and fifteen seconds, even when the car is locked and the key is well outside of comfort entry proximity(they're in my room 60ft and four walls away). Why would my fuel pump be continuously priming, this seems to be why the battery drained, and how do I get it not to do that?
Thanks in advance.

You ever figure this out? Mine just started doing the same. Odd for it to make the 1 sec priming noise every 70ish secs. It stops after about 10 mins.