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  1. Battery light constant on battery good alternator good

    General E46 Forum
    I recently replaced my alternator after it went bad (battery light wasn't on when the alternator died, car stopped got it towed). Old alternator tested bad, installed a new one. New alternator and volt regulator work perfect, give 14.3 V at the alternator and at the battery. Battery holds...
  2. 2004 e46 M3 charging issue

    General E46 Forum
    Hey guys. So my 2004 M3 started giving charging issues. It all started when I was driving on the highway and my negative terminal was loose and corroded. I was driving but my car turned off. I pressed the clutch and turned it back on. Then all the dash lights were illuminated. Battery light came...
  3. Car Not Accepting New Battery

    ///M3 Forum
    Hey all, I recently had to replace my E46 M3's battery and I'm having some issues I'm hoping I could get some advice on. It all started when I couldn't start my car a few weeks ago -- the battery was probably 7 years old so it was time. It was a BMW battery, and I replaced it with a Duralast...
  4. Portable Jump Starter Recommendations?

    General E46 Forum
    Hey everyone - looking if anyone may have recommendations on a good portable jump starter for an e46. This past winter after sitting for two days in below freezing weather, my '05 M3's battery died. I first tried using a small portable jump starter (I'm not sure what it was called, but it was a...
  5. 330ci Help: Changed Battery. Abs, Traction & Red Brake Light Stay On

    General E46 Forum
    I recently put in a new battery but now a new problem has come up. The abs, traction & red brake lights stay on when i start the engine & drive. I drove around for 20 minutes to see if it goes away & nothing. Any help would be appreciated. 2002 330ci
  6. Replaced Alternator- battery light flickers and issues persist

    General E46 Forum
    I have a 2003 325i with 156k miles on it. A few months ago I started having electronic issues with the car not starting in the morning and the radio shutting off. I noticed the battery was quite old so I replaced it with a OEM battery from a E90 dated 11/17. The car daily drove for a few more...
  7. 02 Convertible Air Bag Light and Corrosion

    E46 Convertible
    Noob here, trying to sort out the little issues with my 02 convertible. The air bag light is on. When I first got the car a few weeks ago I took it to the dealership to get the air bag recall work done. They said the light was on because of corrosion on the battery terminals. The negative...
  8. Not able to diagnose this Electrical fault? (E46 328i)

    General E46 Forum
    Hello E46Fanatics, So I'm facing this rather strange issue that I haven't been able to diagnose 100%. It's an electrical fault where my Headlights, Turn Signal Indicator, Hazard and AC doesn't work all the time. Of course I did various tests on the Alternator. 1) Disconnected the + while...
  9. Not able to diagnose this Electrical fault? (E46 328i)

    DIY: Do It Yourself
    Hello E46Fanatics, So I'm facing this rather strange issue that I haven't been able to diagnose 100%. It's an electrical fault where my Headlights, Turn Signal Indicator, Hazard and AC doesn't work all the time. Of course I did various tests on the Alternator. 1) Disconnected the + while...
  10. Does the EverStart Maxx H7 car battery work

    General E46 Forum
    Need to replace the battery in my 02 325xi and saw that the EverStart Maxx H7 from Walmart works. Does anyone have any experience with it?
  11. Battery replacement: Vehicle computer system must be reset

    General E46 Forum
    I stopped at autozone to pick up a new battery for my 02 325xi and it says Vehicle computer system must be reset. I looked online some and there was people talking about how their batteries would explode with out registering their battery. I'm a bit confused on the whole thing and was wondering...
  12. Slow cold start, gauges stopped working, car jerking, burning smell in trunk sddsfkl.

    General E46 Forum
    Started the car up new years day after a night of sitting, it didn't sound or feel like the normal startup, I could tell the cold weather had some effect on the battery. The battery light came on and went out after driving for a couple minutes. Then I noticed that my radio had shut off and all...
  13. Battery in opposite way :-(

    General E46 Forum
    Argh... You can't tell me how stupid this was - I already know. I have new glasses coming in a week. I looked at the battery twice, I really truly thought I had it the right way. I didn't: negative/ground went to positive, and vice versa. The headlights came on, as did the windscreen...
  14. Yet another battery light question... >:(

    General E46 Forum
    Hi everyone. Haven't posted in a while so here it goes.. BTW, before posting I did look through the forum for answers with out any luck..My case is slightly unique?? So I got a 2003 E46 330i sedan. With colder months approaching my car started acting up a little bit. First it would take a...
  15. Repeat Alternator Failure??

    General E46 Forum
    Wondering if anyone can shed some light on my latest issues: TL;DR: Bought car, drove it 1000+ miles, wouldn't start. Replaced battery. Alternator light came on. Replaced Alternator (Bosch Reman). Replaced Coolant lines. All good for a week. Mystery whine from engine bay. Alternator light...
  16. Service Engine Soon light !

    General E46 Forum
    Hello guys, soo ive been constanly having battery issues with my car for the last year. Soo now whenever i stop driving the car for a while I disconnect the negative terminal to stop the battery from draining. Now my check engine light is on. And i read my codes and it is a P1515 code. I also...
  17. Handbreak, DSC, Airbag, Run flat warning lights on?!

    General E46 Forum
    Hi there, My BMW has been left for 3-4 weeks on the driveway. According to my other half the alarm kept going off over the period of a few days last week. She disconnected the battery to stop it from happening. When I got back a couple days ago I turned the engine on after putting the battery...
  18. Still battery troubles...

    General E46 Forum
    So before my battery wouldnt last more then a couple days without driving. So i replaced the battery. Now i havnt driven my car for about 3 days and the same notorious sound and no crank. I checked for a short a while ago and after 2 minutes it goes down to about -.05 , the alternator is...
  19. Replaced alternator and battery twice, battery light still on!

    General E46 Forum
    Hey guys, I don't post too much since i can usually figure out my cars issues but today i'm really stumped! About 2 months ago the alternator went out on my 2004 330ci, the car died and the battery light came on. The battery was dead and it was obvious the alternator had given up. I bought a new...
  20. New Battery Now Problems!

    General E46 Forum
    Hey guys so i got a new battery installed about a week back and have been lagging to make this thread. So now with the new battery installed i have had this annoying beep sound like the key is inside the ignition when the door is open. Also when i get out of the car , pressing the lock button on...
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