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1-20 of 26 Results
  1. E46 General
    My battery light has been on constantly for a while now, even before I started doing major work on the car. Battery voltage car off: 12.6v Battery voltage with engine idling: 14v Battery voltage with all lights on while idling: 13.4v If all these values are sufficient, then why am I getting a...
  2. Electronics
    2003 325i My Battery light is always on. I have gotten the battery and alternator tested and both of them are working at 100% (Battery holds 12.6V when off and 14V when running). I've looked everywhere and can't find out why the battery light would be on if there isn't a charging problem. I...
  3. Electronics
    Hello! I have a 2000 328ci with a standard transmission it has 160k miles. I just finished replacing my starter and now my alternator is not charging my battery there was no battery light but that was because I forgot to plug the connector in. I also changed the oil with 5w40 liquid moly and...
  4. Europe
    Hi, I've got a problem with the battery light on my e46 320d touring (europe) dashboard. When I just insert the key and turn it on until the position part, I can actually see most of the lights on the dashboard light on except the battery red light. The battery light appears for just one second...
  5. E46 XI
    Hi all - I was sent here from Bimmerforums, and was told you folks have forgotten more than I'll ever know about my car, so hopefully you can help! I picked up a 2003 325XI over the weekend for $1600, knowing it had a few issues. Its got 129k on the clock. I've been a DIY mechanic for the...
  6. E46 General
    Hi everyone, Was taking my 05 M3 vert out for a drive today. Wouldn't say I was driving super aggressively but wasn't a stroll around the park either. Oil temp was about 210. I accelerated fairly hard, almost to redline, and all of a sudden the red battery light turned on solid. Immediately...
  7. E46 General
    Last night after work I got to my car, let warm up a bit like I usually do then right before I was ready to leave I see the battery light flashing, so I rushed home( I live literally 3 blocks away) tell my brother he says it could be from the battery being loose so I tighten it turn the car on...
  8. E46 General
    So I have a 2003 325i. It ran very well until the last few months when it began having small intermittent issues that are now happening much more frequently. Occasionally I lose all power and it feels as the engine is gonna stall. Its usually after putting a heavy load on the engine ( large hill...
  9. E46 General
    A little bit of a story: I was driving home from chipotle and noticed that my battery light had come on. I thought this might be from my alternator, as I had been hearing a weird sound coming from the engine that would point to that. Then, I looked and my temp gauge was all the way in the red...
  10. E46 General
    Hi everyone. I'm hoping to get some advice as my issue seems extremely coincidental. Last week my water pump pulley snapped and tore my serpentine belt to shreds. Of course the battery light immediately came on and the power steering froze up. I replaced the pulley and belt and all seemed to...
  11. E46 General
    A question about an e46 M3 battery light. The battery light came on a week ago. I went home and checked the battery (12 months old, from BMW) and the voltage was fine. I then ran the diagnostic test I found here ( https://www.youtube.com/watch?v=svLl2geYxJg ). And it was showing only about...
  12. E46 General
    My 01 330ci started to idle rough a few weeks ago paired with a constant red battery light. Ok, no problem I said. Voltage of battery at 12.7 and tested good. Voltage running is 13.8 and alternator tested good. Starter is fine, all my connections are fine, no blown fuses anywhere. This left me...
  13. E46 General
    My red battery light was on the past few weeks even though the voltages were fine. It turns out it was caused by a bad oil level sensor that was blowing fuse 30. I've been doing a lot of research the past few weeks and I didn't see many stories quite like mine, so I thought I'd share: What...
  14. E46 General
    So I'm driving home tonight and my charging/battery light comes on. Ugh. I get home and check the voltages at the battery: Shut Off = 12.3v Running = 13.95v So wtf is up with the charging light?! Thanks, TVB
  15. E46 General
    new to this sight and bmw's aswell!! i have a 03 plate 318ci i've had pretty bad issues and the obvious doesnt seem to have sorted it. Basically whilst driving the battery light flickers up and the rev's drop as the battery light disappears the power comes back, it will do this a few times...
  16. E46 General
    Hello everyone, I recently moved to Seattle from Southern California. Due to the move, I didn't have time to take care of an oil leak. My car is a 2002 330ci automatic. So here's what happened. I noticed an oil leak a couple of weeks before leaving. Because I was busy with everything else, I...
  17. E46 General
    For past few days the battery light comes on sometimes so I bought a new battery. Car has trouble starting after a day so I assume it's the alt failing. Ran OBC volt test and found 12V when car is off, and 13.1 when it's running. Does this mean the alternator is still somewhat charging the...
  18. DIY Guides
    Hey guys! So I was driving today and my battery light came on. I came to a complete stop behind a car, and went to turn and my power steering was gone. I was able to park and popped the hood. I noticed that the belt was either broken or came off. Is it either a broken pulley? Loose pulley? If...
  19. E46 General
    My red battery dash light just came on while driving. Stereo and A/C still work, steering is not very stiff. I have a ScanGuageII and the volts are reading 11.8 but I don't know if this reads just the battery or the battery and alternator. I also used some belt conditioner before driving and...
  20. E46 General
    After doing some research on here, I replaced the battery in my 01' 330i with the recommended Duralast 49-DL. I live in Iowa and need those high CCA! Worked great right away! The previous owner had a Duralast 48-DL in the car. My problem now, is my battery light comes on and off, almost like it...
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