N63 550i low coolant, where's it go?

Gpfarrell · 08-24-2016, 08:08 AM

My low coolant light keeps coming on. Top it off, it's good for a week or two, and it's back. Spirited acceleration seems to aggravate it. Dealer pressure checked the system and can't find a leak. Any idea where it's leaking?

Car is a 2012 with 28,000 miles and CPO'd.

Thanks in advance for any ideas, and likewise please refrain from N63 bashing, ok?

DDD31 · 08-24-2016, 08:14 AM

Is there white smoke coming from the exhaust?

Gpfarrell · 08-24-2016, 09:07 AM

Not that I've noticed... fortunately! But a small head gasket leak might not make a lot of steam until it gets worse.

Boulder Bill · 08-24-2016, 09:40 AM

Can't answer your question, but nice to see another MT on this board.

Jhenka · 08-24-2016, 11:46 AM

Quote:

Originally Posted by Gpfarrell

My low coolant light keeps coming on. Top it off, it's good for a week or two, and it's back. Spirited acceleration seems to aggravate it. Dealer pressure checked the system and can't find a leak. Any idea where it's leaking?

Car is a 2012 with 28,000 miles and CPO'd.

Thanks in advance for any ideas, and likewise please refrain from N63 bashing, ok?

Is there any smoke coming from the exhaust at wide open throttle? Had the same problem turned out to be some seal by the turbo. It actually started happened right after i got it back from the CCP service.

Gpfarrell · 08-24-2016, 05:09 PM

I haven't looked in the mirror during full throttle take-offs, but I'll try to check. Thanks for the idea!

Sunnyc123abc · 08-24-2016, 11:18 PM

All my factory hose clamps on the top of the motor loosened up.

http://f10.5post.com/forums/showthread.php?t=1275796

http://f10.5post.com/forums/showthread.php?t=1124308

Gpfarrell · 08-25-2016, 08:06 AM

Quote:

Originally Posted by Sunnyc123abc

All my factory hose clamps on the top of the motor loosened up.

http://f10.5post.com/forums/showthread.php?t=1275796

http://f10.5post.com/forums/showthread.php?t=1124308

Thank you, I've wondered if that might be my issue. I don't have any odor yet, but maybe that's coming next!

08-24-2016, 08:08 AM	#1
Gpfarrell Second Lieutenant 43 Rep 216 Posts Drives: 6MT Imperial Blue 550i M-sport Join Date: Mar 2015 Location: Pittsburgh iTrader: (0)	N63 550i low coolant, where's it go? My low coolant light keeps coming on. Top it off, it's good for a week or two, and it's back. Spirited acceleration seems to aggravate it. Dealer pressure checked the system and can't find a leak. Any idea where it's leaking? Car is a 2012 with 28,000 miles and CPO'd. Thanks in advance for any ideas, and likewise please refrain from N63 bashing, ok?
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08-24-2016, 08:14 AM	#2
DDD31 Captain 1649 Rep 891 Posts Drives: 24 M3CS, 95 E320, 85 300CD Join Date: Jul 2015 Location: Michigan iTrader: (0)	Is there white smoke coming from the exhaust? __________________ 2021 MBB M5C (retired) 2018 Daytona Violet M3 ZCP (retired), 2016 AW 550i (retired) 2013 EBII 335i (retired), 2008 Platinum Bronze 535xi (retired), 2007 Monaco Blue 335i (retired) 1999 Hellrot M3 coupe (retired)
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08-24-2016, 09:07 AM	#3
Gpfarrell Second Lieutenant 43 Rep 216 Posts Drives: 6MT Imperial Blue 550i M-sport Join Date: Mar 2015 Location: Pittsburgh iTrader: (0)	Not that I've noticed... fortunately! But a small head gasket leak might not make a lot of steam until it gets worse.
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08-24-2016, 09:40 AM	#4
Boulder Bill First Lieutenant 61 Rep 371 Posts Drives: 2018 Porsche Cayman GTS Join Date: Aug 2012 Location: Colorado iTrader: (0)	Can't answer your question, but nice to see another MT on this board. __________________ 2013 F10 550i \| 6 Speed Manual \| M Sport Package \| Carbon Black \| Oyster & Black Nappa \| Dynamic Handling w/Dynamic Damper Control \| Executive Package (Comfort Access - Soft Close - HUD) \| B&O Sound \| Luxury Seating & Heated Seats (retired: 2002 E39 540i \| 6 Speed Manual)
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08-24-2016, 05:09 PM	#6
Gpfarrell Second Lieutenant 43 Rep 216 Posts Drives: 6MT Imperial Blue 550i M-sport Join Date: Mar 2015 Location: Pittsburgh iTrader: (0)	I haven't looked in the mirror during full throttle take-offs, but I'll try to check. Thanks for the idea!
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08-24-2016, 11:18 PM	#7
Sunnyc123abc Private 30 Rep 74 Posts Drives: 550xi Join Date: Sep 2014 Location: Los Angeles iTrader: (0)	All my factory hose clamps on the top of the motor loosened up. http://f10.5post.com/forums/showthread.php?t=1275796 http://f10.5post.com/forums/showthread.php?t=1124308
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