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  1. E34 (1989 - 1995)
    I bought a 1992 525i E34 recently, everything worked fine just needed a new battery but there seems to be a parasitic draw somewhere and I'm thinking it's the aftermarket radio but i could be wrong. I replaced all my fuses under the rear seat and everything started working perfectly but after an...
  2. F10 / F11 (2011 - 2016)
    I needed a new battery and meineke said they can do it. Took it to the shop, got the battery replaced and left. Everything seems fine and I am assuming it was coded and registered like it should be. But I went to unhook the battery to replace my camshaft sensors and solenoid actuators, and I...
  3. F10 / F11 (2011 - 2016)
    I RECENTLY SWAPPED OUT MY N55 DUE TO ROD KNOCK FROM WORN BEARINGS, UPON REMOVAL OF THE OLD ENGINE I DIDNT TAKE NOTICE OF WHERE THESE PLUGS GO CAN SOMEONE WHO HAS PERFORMED THIS SWAP HELP ME ROUTE AND FIND THE PROPER ACCESSORY CONNECTOR BELOW I HAVE UPLOADED A DIAGRAM OF THE WIRING THAT I NEED...
  4. 7 Series - E38 (1995 - 2001)
    Weird issue I’ve been having. The soft latch mechanism seems to be disrupted by caution lights and turning the lights on and off. Even when unlocking and locking. Something is shorting somewhere. If i leave the caution lights on, the latch will rotate locked and unlocked, in sync with the...
  5. 7 Series - E38 (1995 - 2001)
    I’ve searched a lot of key words trying to figure this out but it’s a weird situation. Car was running beautifully a year ago. I had let it sit and used it as a parts car / learning project. Had 70% of car apart for awhile with everything unplugged. I’ve finally gotten to the point where it’s...
  6. E90/E91/E92/E93 (2006 - 2013)
    I have one more car than garage spaces at a seasonal home, meaning one will have to go into a pole barn that does not have electrical service. I plan to remove the battery and put it on a tender at home. The leading candidate is my 2007 e93. Will this cause any disruption to the electrical...
  7. E85 / E86 Z4 (2003-2008)
    So today on the way to work, I stopped at a light and the car (2006 Z4M / E85) completely died. A total loss of all electrical power. Not even the flashers worked. Just dead, dead, dead. So I called for a tow, not sure what else to do. Tried a couple times to restart and nothing. Sat...
  8. E39 (1997 - 2003)
    Hello, im in need of help with my e39 530d. Symptoms: -Radio playing but no controls work on either steeringwheel or on the radio. -Cluster is not indicating blinkers, headlights, foglights, doors open etc. Works on the outside however. -PDC not working -No lights when unlocking the car Tests...
  9. 7 Series - E38 (1995 - 2001)
    Hey good people! I have been having some issues with some of the electrical components of my e38 and I would love some insight from an expert here. For a while i have been living with the ABS/DSC light coming on every now and then, especially when it's hot out. I assumed this was related to a...
  10. E36/7 Z3 (1996-2002)
    So I'm working on a z3, no power at fuel pump. Eventually i jump 30 and 87 on the relay and get full power to the pump. But checking the voltage between 85 and 86 gives 5v. Am i thinking about this right? If the ECU is controlling a ground to switch the relay then it should be a full 12v across...
  11. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    The other day I was checking fuses in the trunk and after I finished checking (none of them were blown) I got in the car and the screen was not turning and isn’t getting any power. Any ideas what is going on?
  12. Do-It-Yourself H.Q.
    Hello everyone, So here's the problem, my 2001 Z3 windows won't go up. I bought the car like this thinking it's the fuse. There's plenty of threads like this but every one has different symptoms. Here are my symptoms and observations: window or motors make no noise when pressing the...
  13. E60 / E61 (2004 - 2010)
    Hey guys I'm wondering if anyone knows the best method to test to see If Im getting juice from my DME to the Valvetronic Motor. I'm having Valvetronic issues and I want to make sure my issue isnt with the DME itself. Thanks
  14. X3 E83 (2004 - 2010)
    Hello all, I was driving yesterday and i noticed my driverside low beam had stopped working, It had done this in the past and the fix was a bulb and i've noticed when changing the bulb the infamous wire insulation nightmare and decided to use some tape as a temporary fix, it worked fine and...
  15. E90/E91/E92/E93 (2006 - 2013)
    So this one has me scratching my head bigtime. Ive been trying to chase down an issue regarding the DSC module for almost a month now. Im getting absolutely zero communication from the DSC module, ill update the post in 30 or so minutes (depending on the time you see this) with a list of all...
  16. E90/E91/E92/E93 (2006 - 2013)
    I've replaced both fuses (though they seemed fine) in the fuse box that were listed, and no joy on the rear defroster kicking on. I'm not sure if there is a relay for this defroster, as I don't see it listed in the fuse box -- so open to some suggestions on that? I'm also not sure where to get...
  17. E39 (1997 - 2003)
    Hey all, I wanted a place to post all of my current issues with my car in a list format, as most are electrical related would make me insane if I asked each question individually to google. My vehicle is a '99 528it with a m54b30 swap, the entire longblock for reliability (Hasn't aged well I...
  18. E90/E91/E92/E93 (2006 - 2013)
    For the better part of 8 months I’ve been having issues with my 2007 bmw 328xi. it first started when it sat for months over the winter. We first changed the batteryand brought a brand new battery which then became completely drained within days. We eventually realized it was the alternator...
  19. E90/E91/E92/E93 (2006 - 2013)
    This has been a very long journey, and I'm glad I took the long route as I covered so many bases on my way and know the exact condition of the car. The specifics of the car are a 2007 e90 328xi coupe sport with the N51, with 50K miles. IF YOUR OIL LEVEL SENSOR IS OUT, GET IT REPLACED...
  20. E90/E91/E92/E93 (2006 - 2013)
    2009 E90 147000 miles N52 motor and MFG DATE is 05/2009 Have made posts about CAS issues before, motoring voltage along terminal 15, and 30 and sometimes drop. Mechanics says currently, they are reading low voltage. recently got the CAS repaired, and have warranty on part, but I'm wondering...
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