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  1. X5 F15 (2014 - 2018)
    I've been monitoring a leak around the rear differential, trying to isolate it. I originally thought it was the front seal, but now I'm not convinced; there's moisture on some tubing above the dif, three tubes. One is red, the other is blue, so I've isolated those as air for the shocks the...
  2. General BMW Questions
    Hi everyone Does anyone have the bmw 318i Air conditioning system diagram? I went to a shop to refill the refrigerant today. The guy hooked up the pipes and machine shows 0g of refrigerant and there was a leaking/hissing sound somewhere in the front of the engine (in the video) so i am trying...
  3. X1 E84 (2011 - 2015)
    We have a water leak from what appears to be a hairline crack in a pipe tucked right up beside the gearbox. Gearbox is to the left looking at the photo. Not sure what or how serious this is? Thoughts are its related to the air con rather than the coolant. Can anyone shed any light on this...
  4. E90/E91/E92/E93 (2006 - 2013)
    Hello i just notice that my intercooler pipe that is connected to the turbo is leaking oil on the end where it connects to intercooler The car loses oil every 1500 miles like 0.5 any idea guys. N47 320d xdrive
  5. X3 E83 (2004 - 2010)
    The stupid gasket between the down pipes and the centre pipes on my 2007 X3 keep failing. I did have to drill out the studs and replace with bolts awhile ago. I suspect it's not sealing well and then the gasket corrodes and burns from gases getting by until it fails to the point it just falls...
  6. E30 (1982 - 1993)
    Hello, I have a 1984 E30 318i and recently I started my selling gas while running the car. Turns out there's a pin hole leak in the hose leading from the fuel filter (to the fuel rail?) Picture of the leak is here. The hose is running to this grey canister. So I thought about just...
  7. E46 (1999 - 2006)
    So today I wanted to go out for a drive and when I left I realized my power steering wasn’t working. I drove back home and I was trying some stuff like turning the wheel from lock to lock and I tried turning the car on and off but nothing seemed to work. When I turned the wheel from lock to lock...
  8. F22 / F23 2 Series (2014 - Current)
    Hi: I have a new-to-me M235i convertible with a small drip-drip-drip leak right over the the drivers door during, after rain. I'm not sure if the water is coming from the windshield. the side window, or running along the edge of the top. Anyone have experience with this on an F23 and tell me...
  9. X3 G01 (2018 - current)
    Hello, Anyone having a coolant leak from the bottom of their vehicle? We cannot see anything from under the hood, but there's a leak near a nut at the bottom of the car. I have linked a video of the leak below. Any help is appreciated. Thank you! Youtube Video
  10. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    2018 330i M Sport. 24k miles. I went in for an alignment, and they noticed a minor coolant leak, fixed under warranty. Yay. From their notes: 'Found trail of coolant on belly pan. removed pan/lower engine cover and inspected. found coolant leaking from coolant line from turbo to engine block...
  11. F10 / F11 (2011 - 2016)
    I have a 2016 535i. I noticed today that my passenger side footwell in the front was soaking wet. And i mean SOAKING. Any ideas on what this could be?
  12. E90/E91/E92/E93 (2006 - 2013)
    Dear all! New to the forum, I apologize if the subject had already been discussed before I've tried looking around. Just want to get some info from you guys if any of you have/had an e92 320I (N46), experiencing some newly discovered leak (sure wasn't there three weeks ago :/) around down at the...
  13. X1 F48 (2016 - current)
    I just came home from a nice long weekend to discover that my car somehow has tons of water on the passenger side. The water was about 2-3 inches deep on the floor of the rear passenger side and the floor of the front passenger seat was also soaked. Eventually used a vacuum and got about a...
  14. E39 (1997 - 2003)
    Hey y’all, this is a follow up post to my last one. I have a 2003 525i auto. I’m having a big leak on the underside of the car near where the transmission meets the engine. The leak looks to be a mix of burnt oil, coolant, and possibly some sediment (not 100% sure). I will attach some pics here...
  15. X3 M, X5 M, X6 M, Z3 M & Z4 M
    Hello, I recently started my BMW to have it warmed up before I left for work in the morning and I noticed a small coolant leak from the passenger side, I popped the hood, and noticed a leak from the oil filter/heat exchanger housing, so I ordered the replacement gaskets and replaced those, the...
  16. 7 Series - E65 / E66 (2002 - 2008)
    Hello! I have a 2004 745li with a slow leak in the sun roof cassette (quoted at 6k to fix 🤢). I'm wondering if it's at all viable for me to take off the headliner and apply some type of sealant around the edges of the sunroof? If it is could anyone provide some tips on what kind to use and what...
  17. E36/7 Z3 (1996-2002)
    I’ve got a leak near my upper expansion tank hose and near the radiator hose going to the engine. I’ve noticed that when I drive the car more aggressively, it will leak more and even splatter under the hood. Any idea of what is leaking based on the picture?
  18. E46 (1999 - 2006)
    Hi all, Have a 05 320i with an oil leak. It has caused loads of sensors going, limp mode ect but dont know where the problem is. So far ive replaced rocker cover gasket, vanos sensors and camshaft sensors. Codes continually coming up after clearing are P1056 P1061 P0366 Anyone see anything im...
  19. General BMW Questions
    I have a 2016 435i convertible hardtop. due to heavy rains in the northwest my 2 drains in the trunk clogged and flooded my trunk area where the amp and power top motor are. I took it to the BMW dealership as I have the original manufacture's warranty and a extended warranty. The service...
  20. 5 Series
    I, recently, had a mysterious coolant leak coming from a weep hole near my water pump in my 2009 550i. After calling around to several auto shops, the price seemed like it would be steep to fix the issue. The coolant was actually coming from the front seal of the coolant transfer pipe. After a...
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