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  1. 7 Series - F01 / F02 / F03 / F04 (2008 - 2015)
    not sure if this posted last time There is a black and yellow wired connector that plugs into the side of the positive battery terminal. I had a broken yellow wire and there is a resisiter soldered between the wires as well and I'm not sure why. I've searched wiring diagrams and have come up...
  2. F20 / F21 1 Series (2012 - Current)
    I am wondering what the yellow and black connector that ugs into the back of the RED battery terminal. Mine had a broken wire and a resistor soldered between them that seem to connect them. The yellow wire was broken so I repaired it. Didn't notice it before so I am wondering what it's for.
  3. F10 / F11 (2011 - 2016)
    my car 2012 BMW 528xi I will save you the why I ended up in my situation. I unplugged my dme without disconnecting battery. Plugged it back in and the car will not start. As soon as I hit the on button the relay behind the glove box and relays in the engine bay start clicking repeatedly. At...
  4. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    Hello everyone, I've tried every possible solution to try to fix a crank no start problem I've been having, so I come here for help! how the problem started. Last week I let a friend use my 335, it had a low battery so I told him to turn everything off when parked... didn't listen, so the car...
  5. X1 F48 (2016 - current)
    Car battery died outside of my own state (MA) in Vermont. The car was sitting there for three weeks without being driven while family member was visiting. I would like to call AAA or my insurance roadside assist for a jump start but then I found the article down below which is leading me to...
  6. F10 / F11 (2011 - 2016)
    Hey Guys, So today I found my car alarm randomly going off, intermittently for 10 minutes, then it turned off for 5 minutes and started back up for another 10 minutes. I went to use my key fob and it would not unlock, lock, or turn the alarm off. My trunk would not open with the fob either. I...
  7. E60 / E61 (2004 - 2010)
    2010 BMW 535i 6MT N54 engine Dear all reaching out for your wisdom and experience with potential low voltage alternator issues. My battery (Original OEM BMW) is nearing the end of its useful life after almost seven years, and today I had the first episode of the car not cranking to a start...
  8. E60 / E61 (2004 - 2010)
    Does anyone know what the factory battery specs are for a 2010 E60. AGM vs lead acid, Amp-hour, CCA and size?
  9. New Member Introductions
    Hello all. Edited because I ask too many questions. I currently do not own, but have been looking at some high mileage e90s. I may be on here a lot more in the near future as high mileage will come with some issues and troubleshooting. Anyways! Hello!
  10. X5 Hybrid
    Has anybody received the MY2023 X5 45e PHEV? We are interested in it but we found the 8 year/100k miles warranty on battery was removed ONLY for the new MY2023. The warranty was there for 45e up to MY2022. Below link is the warranty for all MY2023 models, and you can see the section for battery...
  11. X5 F15 (2014 - 2018)
    Hey everyone, My wife's 2016 F15 has been having some problems. It's just shy of 90K miles but has been exhibiting some odd symptoms intermittently for a bit, and just yesterday started having another issue, and I'm wondering if they're all related. Maybe a year or two ago the computer would...
  12. E90/E91/E92/E93 (2006 - 2013)
    The left indicator/turn signal was flashing rapidly, I found online that said before replacing the LED module that disconnecting the battery for 15 minutes may fix the issue. I decided to give it a try but since then I have the red warning with the car on the lift with no lights working or...
  13. X Series
    Our old 2003 x5 e53 2 petrol is getting a second lease of life as a dayvan / recreational/ overnighter, and top of the list is the install of a second battery. I have a 110amperage/hour deep cycle readily available, so questions: Any ideas on easiest mounting location for the second battery...
  14. X3 E83 (2004 - 2010)
    HI newbie here and would like to change my battery but reading online is getting me intimidated based on the following questions. 1. would I need to "reprogram" the new battery? For example, if I get a Duralast Platinum ? 2. confused about the size, Auto zone pulled a couple of different sized...
  15. 5 Series
    The car was working fine, but it had suddenly stop turning on out of nowhere. It would only start by being jumped but it would start shaking until it would turn off. I checked around the battery and noticed the BST cable had separated from the positive cable and battery. I then ordered a used...
  16. E90/E91/E92/E93 (2006 - 2013)
    Hello. I’m pretty new in this forum and usually I don’t get any issue (except a few minors fixed diy) with my BMW E90 325xi 2006 (none idrive). So, today I was running around 40 mph with ac on and on dashboard came up “Yellow gear shape with Exclamation point in it” error and a few seconds...
  17. 7 Series - E38 (1995 - 2001)
    when I received my E38 project in Nov the 2020 dealer installed battery was dead. Likely was for over a month. I put a charge on it and it started the car, but wouldn’t hold a charge. Kept a charger on it. Here comes the 100F+ weather and battery is dead even with a charger. I buy a new battery...
  18. 3 Series Hybrid
    I am currently using a Toyota Prius as a mobile generator. I attach a 1000w inverter to the 12v battery and leave the car running so the 12v never runs flat. Would the same setup work for the 330e range? Does anyone have the 12v battery ratings for the 2017 model? Thanks
  19. General BMW Questions
    Hi all, I have been stuck overseas for nearly 9 months and finally got back, obviously, all cars are dead as hell, so I popped to the shop and grabbed a CTEK MXS5 for recharging, fortunately,it brought all batteries back to life and holding charges, I noticed there is a recond mode and I am...
  20. E60 / E61 (2004 - 2010)
    Hi all, I have a fresh battery where the cat will start and stop several times.no issue. If I leave it for 3,4 days , the battery becomes exhausted. What would cause this? The only thing running is security with doors locked. Why would it become depleted in such a short time. Nothing else...
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