Coolant Leak B58

Fred633 · 12-27-2022, 06:21 PM

I have a coolant leak (740 B58). Not sure where it is coming from. It looks like maybe the heat management module or possible oil filter housing if coolant runs in it.

Are either a common place for them to leak? If I tackle it myself how hard is it? If I take it to a shop how many hours book time is it?

My understand is the intake comes off and everything comes out the top.

If I do tackle it are there any other parts I need to replace while I am in there?

F82 in QC · 12-27-2022, 07:16 PM

Don't DIY if you find removing bumper is insanity hard.

Fred633 · 12-28-2022, 08:25 AM

Quote:

Originally Posted by F82 in QC

Don't DIY if you find removing bumper is insanity hard.

My Audi S8 that same trim is a minute job. On the BMW the whole front comes off which is insane. I had to replace the night vision camera on the Audi and a parking sensor which involved removing the front bumper. That required a $600 dynamic alignment which the dealer is the only place that can do them. They screwed it up the first time so had to take it back to do it again. It is a 4 hour trip for 2 people to the dealership to leave a car.

I don't like taking bumpers off with sensors I have to take to the dealer when reinstalled for alignment. It wastes a lot of my time and money dealing with there incompetence.

I am just not familiar with the BMW and think I am going to break all the plastic since I don't know where the screws and clips are. Give me something old made out of metal and can remove it no problem.

Fred633 · 12-30-2022, 12:20 AM

Quote:

Originally Posted by F82 in QC

Don't DIY if you find removing bumper is insanity hard.

Rebuilt frontend of a diesel truck this afternoon. All metal, no plastic.

Fred633 · 01-01-2023, 03:39 PM

Quote:

Originally Posted by F82 in QC

Don't DIY if you find removing bumper is insanity hard.

Pulled the intake which was pretty easy except for 2 hoses on the underside that are clipped on. One of the clips went flying and can't find it. Hunted for the past hour and no luck. Will have to get another one.

Snow White1 · 01-01-2023, 05:37 PM

Did you find out where the leak is? Mine is leaking so I took it to the shop.

AlteBMW · 01-02-2023, 11:57 AM

Couldn't be leaking from oil filter could it? Or am I just not familiar with the engine?

Fred633 · 01-04-2023, 12:48 PM

Quote:

Originally Posted by Snow White1

Did you find out where the leak is? Mine is leaking so I took it to the shop.

The oil filter housing was leaking.

12-27-2022, 06:21 PM	#1
Fred633 Private 0 Rep 57 Posts Drives: BMW Join Date: Apr 2017 Location: USA iTrader: (0)	Coolant Leak B58 I have a coolant leak (740 B58). Not sure where it is coming from. It looks like maybe the heat management module or possible oil filter housing if coolant runs in it. Are either a common place for them to leak? If I tackle it myself how hard is it? If I take it to a shop how many hours book time is it? My understand is the intake comes off and everything comes out the top. If I do tackle it are there any other parts I need to replace while I am in there?
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12-27-2022, 07:16 PM	#2
F82 in QC Private First Class 60 Rep 145 Posts Drives: BMW M4,BMW 750iX Join Date: Feb 2020 Location: Montreal iTrader: (0)	Don't DIY if you find removing bumper is insanity hard.
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01-01-2023, 05:37 PM	#6
Snow White1 Registered 2 Rep 3 Posts Drives: 2019 White 740I Join Date: Dec 2022 Location: NC iTrader: (0)	Did you find out where the leak is? Mine is leaking so I took it to the shop.
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01-02-2023, 11:57 AM	#7
AlteBMW Lieutenant Colonel 728 Rep 1,595 Posts Drives: '23 760ix; '23 X3; '23 MB wgn Join Date: Mar 2014 Location: New York iTrader: (0) Garage List 2023 X3 x30 [0.00] 2023 BMW 760ix [10.00] 2023 Mercedes E450 ... [0.00]	Couldn't be leaking from oil filter could it? Or am I just not familiar with the engine? __________________ BMWCCA Current: 23 760ix (Carbon Black/Tartufo) (after first one totaled) '23 X3; '23 MB E Wagon Prior: BMWs (3,5,7 & 8 series (2x!)) X3, MB (C, E, and S), Alfa GTV, MGB, Audi (A4, A6), Saab, Volvo, Toyota, Lincoln, Chrysler, Oldsmobile, Chevy, Rambler.
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