What's with our cooling system?!!!

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Dec 15, 2010 | 07:39 PM

#11

RonVF

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Joined: Oct 2008

Posts: 23

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From: Halfmoon NY

My Ride: 2005 545ia Sport Cold Weather Gray Metallic/Blk, w/Anthracite Premium sound Navigation Voice activation Blue tooth Satellite prep. Xenon w Adaptive light control Park distance

I am reading thru this post because I just found a leak at my coolant sensor coming from the return hose.
It looks like it is coming from the top of the sensor, does that sound like the O-ring and if so how easy is the fix?
I am also reading that these cars have quick disconnect hoses? with o-rings? is this correct? Last car was an e39 540. Haven't really had to do much to my 2005 545 (yet)
I guess at 110,000 the fun is about to begin..

Thanks

RonVF
2005 545

Dec 16, 2010 | 07:39 AM

#12

545felix

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Joined: Jan 2008

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From: Miami

My Ride: 05 545/6

I've had to replace the sensor, the hose the sensor plugs into, the vent pipe, AND the coolant tank in the last month. One at a time, too. I have 59K. At least now it's not leaking anymore. I used to think the E60 cooling system was better than the E39s, but looks like it's only the radiator that's been improved on.

Jan 2, 2011 | 01:53 PM

#13

evo42

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From: MN

I did the repair devildawg shows in his post, only repairing the driver side connection. I used three 1/4 inch clamps, a 1/4 hose to hose connector, and about 3 inches of 1/4 hose. I'll be ordering the replacement part but after the test drive, its all dry up there still.
<holy burry pic! you get the idea>

What's with our cooling system?!!!-fix.jpg

Jan 2, 2011 | 03:57 PM

#14

turboawd

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My Ride: 2006 BMW 550i

do all e60 cars have this tube, or just the 545?

Jan 2, 2011 | 05:51 PM

#15

VTCMart

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Joined: Nov 2010

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From: DFW, Texas

My Ride: '06 530i and '99 E46 328i

Quote:

Originally Posted by turboawd

do all e60 cars have this tube, or just the 545?

My 530i (S52) has a similar hose but it is up underneath the metal shroud, not as easily visible as the 545i from the looks of that picture.

Jan 2, 2011 | 07:01 PM

#16

advancedlogic

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Joined: Sep 2007

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From: Encino, CA

My Ride: 04 545i - Titanium Silver/Black, Sport pkg, Comfort Seats w/ Lumbar, Premium Sound, power rear sunshade, Adaptive Xenon Headlights, Steptronic, Park Distance Control, Fold down rear seats w/ski bag, Aux jack, 6-disk changer, puddle lamps... Engine: Custom Remus cat-back exhaust w/chrome square tips, K&N Air Filter, Charcoal Filter Removed, Sprint Booster :-), 50/50 mix of 91+100 Octane, EuroRev ECU Remap (coming soon lol), Dinan High-Flow Throttle Body (coming soon...maybe lol) Interior: Portable Sirius Stilletto 100 w/car kit, Garmin Nuvi 680 mounted below rear-view mirror, LCI-style I-drive knob, Dark Poplar Center Dashboard Trim. Exterior: E60 forum clings, 5% rear tint, ACS roof spoiler (painted black for distinct look against limo tint), ACS trunk spoiler, ACS add-on front spoiler and rear apron (awaiting installation), "18 Black Staggered BeBeS Style OER (emergency replacement for cracked sport 124 rims), black kidney grill, white accessory lighting (including license and trunk lamps), Angel-eye upgrade, AIB xenon-matched fog lamps, AIB V3's on order, red rear reflectors

Quote:

Originally Posted by VTCMart

My 530i (S52) has a similar hose but it is up underneath the metal shroud, not as easily visible as the 545i from the looks of that picture.

Same with the 545. The metal cover was removed to expose this dastardly hose