Coolant Vent hose crack

messygarageBMW · 06-26-2018, 04:14 PM

So my 335i was running great and as we pulled up to the movie theater and parked the car decided to wet itself.

I was a bit nervous until I found out where the coolant was coming from and it was a small hose on the top that runs from the expansion tank to the top radiator hose.

The car spent a couple nights sitting in the theater parking lot while I waited for the part to show up but was an easy fix (did it onsite at the theater) Thought I would share for those interested if it happens to them. I saw somewhere on youtube a guy was charged nearly $300 for the fix. The part (17 12 8 570 061) was less than 50 USD from the dealership (I've even seen it for less online)

Took me longer to film it than it did to fix it. An easy DIY.

Sea-Tac · 06-26-2018, 06:39 PM

I appreciate the clip...it really adds to the DIY knowledge base. Good work. Looks pretty easy. Thank you.

jhentr · 02-21-2020, 01:51 PM

Yeap, happened to my wife's '14 m235i too. She called saying the car is reporting low coolant level in the morning (and she just got to work 50+ miles away). I didn't think much of it since she had low coolant warning before and the dealer just topped off not seeing any leaks. I recently topped off about a month prior to this latest notification from the car.

This time, she got home and reminded me about the 'add coolant' alert. As she pulled in and open the hood, steam was coming out of it. Found that the plastic tube was broken in the same place at that 90' degree elbow! I was mad that this coolant hose was made of brittle plastic? Car had less than 75K on it.

Called the dealer but they wanted $75 bucks for it. Online was ranging about $35-40 dollars.

I DIY with a 5/16in transmission oil hose (<4 ft) and hose clamps for $10 from AutoZone, based on the the genius idea below. I did order the tube online for $35 bucks as a backup. But looking at the permanent solution, this will occur again in about 50-75K miles again...

After the repair, I had to add 1 gallon of coolant to bring back the level to normal and ran thru the instructions to run the 'electric water' pump to burp out air. Also had to clear the CEL of u1408 / P 0128.

I think any longer and the engine could have been damaged.

https://f30.bimmerpost.com/forums/sh...1547622&page=2

E90convert · 04-22-2020, 12:30 PM

Just happened to me while in line for ice cream haha. Left the car in the parking lot and ordered the part from FCP Euro - paid for 1-day shipping. Lets see if I can get it moving again as easily as you did! 95K on my car.

turbotwo28 · 08-11-2020, 07:38 PM

Thanks for the video. Same exact break with my F30. Googled it and your post came up first. Glad its a quick fix.Now I'll have to check the local dealer to see if it's in stock or not.

Chaos236 · 08-11-2020, 07:44 PM

My aftermarket replacement one cracked also after much difficulty trying to install it. Caused overheating and a tow. The second replacement was from a dealer. Went on in two seconds.

antzonthe1 · 01-29-2021, 10:27 PM

Is the purge with the pump procedure a must ? This happened to me today and I got a ride to dealer bought the part and swapped it out. Topped off the coolant. And drove it home. It still steamed after but I assumed that was what was splashed around inside and the heat. Should I still do the purge tomorrow morning?

1QuikWS6 · 01-30-2021, 03:59 PM

Thanx for the heads up & the nifty parking lot DIY

I have heard of this being a 'normal' problem so I went ahead & bought the new line & keep it in my trunk for just in case when it happens.

What was the mileage on your car when this happened?

I have 39K on my 435, just wondering around when I should be expecting this to break

paimon.soror · 01-30-2021, 04:27 PM

had it happen to me at around 40k. Bought a replacement and a spare just incase

chowser51 · 01-30-2021, 06:32 PM

mine blew at 66k

f30jay · 02-01-2021, 05:12 PM

Happen to me 2nd week i got the car lol.... fixed it with fuel line and hose clamps till i got the new part

thejeremyman9 · 02-01-2021, 05:16 PM

https://f30.bimmerpost.com/forums/sh....php?t=1547622

06-26-2018, 04:14 PM	#1
messygarageBMW Private First Class 102 Rep 148 Posts Drives: F30 335i sport line Join Date: Aug 2015 Location: Granger, IN USA iTrader: (0) Garage List 2012 BMW F30 335i S ... [0.00] 2006 BMW 330xi [0.00] 2007 Toyota FJ Cruiser [0.00] 2003 MINI cooper S [0.00]	Coolant Vent hose crack So my 335i was running great and as we pulled up to the movie theater and parked the car decided to wet itself. I was a bit nervous until I found out where the coolant was coming from and it was a small hose on the top that runs from the expansion tank to the top radiator hose. The car spent a couple nights sitting in the theater parking lot while I waited for the part to show up but was an easy fix (did it onsite at the theater) Thought I would share for those interested if it happens to them. I saw somewhere on youtube a guy was charged nearly $300 for the fix. The part (17 12 8 570 061) was less than 50 USD from the dealership (I've even seen it for less online) Took me longer to film it than it did to fix it. An easy DIY.
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06-26-2018, 06:39 PM	#2
Sea-Tac Major 1453 Rep 1,487 Posts Drives: 2108 X3 xDrive30i Join Date: Apr 2018 Location: Bellevue, Wa iTrader: (0) Garage List 2018 X3 xDrive30i [0.00] 2016 328i xDrive [0.00]	I appreciate the clip...it really adds to the DIY knowledge base. Good work. Looks pretty easy. Thank you.
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02-21-2020, 01:51 PM	#3
jhentr New Member 0 Rep 17 Posts Drives: 2014 m235i Join Date: Oct 2013 Location: Los Angeles, CA iTrader: (0)	Great help Yeap, happened to my wife's '14 m235i too. She called saying the car is reporting low coolant level in the morning (and she just got to work 50+ miles away). I didn't think much of it since she had low coolant warning before and the dealer just topped off not seeing any leaks. I recently topped off about a month prior to this latest notification from the car. This time, she got home and reminded me about the 'add coolant' alert. As she pulled in and open the hood, steam was coming out of it. Found that the plastic tube was broken in the same place at that 90' degree elbow! I was mad that this coolant hose was made of brittle plastic? Car had less than 75K on it. Called the dealer but they wanted $75 bucks for it. Online was ranging about $35-40 dollars. I DIY with a 5/16in transmission oil hose (<4 ft) and hose clamps for $10 from AutoZone, based on the the genius idea below. I did order the tube online for $35 bucks as a backup. But looking at the permanent solution, this will occur again in about 50-75K miles again... After the repair, I had to add 1 gallon of coolant to bring back the level to normal and ran thru the instructions to run the 'electric water' pump to burp out air. Also had to clear the CEL of u1408 / P 0128. I think any longer and the engine could have been damaged. https://f30.bimmerpost.com/forums/sh...1547622&page=2
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04-22-2020, 12:30 PM	#4
E90convert Lieutenant 162 Rep 420 Posts Drives: F87 M2 DCT, F15 X5 Join Date: Dec 2014 Location: Columbus, Ohio Metropolitan Area iTrader: (0)	Just happened to me while in line for ice cream haha. Left the car in the parking lot and ordered the part from FCP Euro - paid for 1-day shipping. Lets see if I can get it moving again as easily as you did! 95K on my car. __________________ ‘18 F87 M2 DCT '17 F15 X5 xDrive35i M-Sport Sold in 2023 '12 F30 335i 8AT Sport Line Sold in 2020 '08 E92 335xi 6MT Sold in 2016 '08 E90 335i 6MT - FBO
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08-11-2020, 07:38 PM	#5
turbotwo28 New Member 2 Rep 24 Posts Drives: 3 series Join Date: Jul 2017 Location: North America iTrader: (0)	Thanks for the video. Same exact break with my F30. Googled it and your post came up first. Glad its a quick fix.Now I'll have to check the local dealer to see if it's in stock or not.
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08-11-2020, 07:44 PM	#6
Chaos236 Lieutenant 209 Rep 458 Posts Drives: Porsche Cayenne , 640 GC Join Date: Jun 2019 Location: Columbus Ohio iTrader: (0)	My aftermarket replacement one cracked also after much difficulty trying to install it. Caused overheating and a tow. The second replacement was from a dealer. Went on in two seconds.
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01-29-2021, 10:27 PM	#7
antzonthe1 New Member 0 Rep 13 Posts Drives: BMW 435i Join Date: Jan 2021 Location: California iTrader: (0)	Is the purge with the pump procedure a must ? This happened to me today and I got a ride to dealer bought the part and swapped it out. Topped off the coolant. And drove it home. It still steamed after but I assumed that was what was splashed around inside and the heat. Should I still do the purge tomorrow morning?
	Appreciate 0 Quote

01-30-2021, 03:59 PM	#8
1QuikWS6 No 55mph 1619 Rep 8,476 Posts Drives: F32 435ix MSport Join Date: Jul 2009 Location: Blitzburgh, PA iTrader: (113) Garage List 2022 BMW M440ix Vert [0.00] 2015 BMW 435ix MSport [0.00] 2000 Pontiac Trans Am [0.00]	Thanx for the heads up & the nifty parking lot DIY I have heard of this being a 'normal' problem so I went ahead & bought the new line & keep it in my trunk for just in case when it happens. What was the mileage on your car when this happened? I have 39K on my 435, just wondering around when I should be expecting this to break __________________ F32 435ix//MGM//M Sport-Prem-Tech-Driver Assist-Lighting-Cold Weather-Dyn Handling Pkgs//M4 Black Lthr Int w/M4 Alum Blade Trim//HK w/Bavsound Stg3//763M//M4 Euro LCI Tails//M4 Mirrors w/CF Covers//AWCarbon CF F/R Spoilers-Side Splitters-Diffuser 6WB/ID6 HU+HUD/IND M4 Alcantara Armrest//PURE S2 Turbo//AA FMIC+DP//ER CP+TIC//3.5bar TMAP/TS DV//AWE Tuning Exh w/Blk Tips//Turner MS CF Intake//BM3 Cary Jordan Tune//MPerf Diff//PrecRW Ignition Kit
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01-30-2021, 04:27 PM	#9
paimon.soror Captain 628 Rep 965 Posts Drives: 2016 F36 435x MSport Join Date: Oct 2017 Location: Hartford, CT iTrader: (3) Garage List 2016 BMW 435xi GC [6.00]	had it happen to me at around 40k. Bought a replacement and a spare just incase __________________ 2010 Mazda RX8 - Sold (11/17) 2016 BMW 435xi GC - Current
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01-30-2021, 06:32 PM	#10
chowser51 Colonel 2025 Rep 2,808 Posts Drives: F33 430 and F39 M35i Join Date: Feb 2009 Location: Cleveland, OH iTrader: (3) Garage List 2018 BMW 430i xDrive [0.00]	mine blew at 66k
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02-01-2021, 05:12 PM	#11
f30jay New Member 9 Rep 29 Posts Drives: 2013 335i Xdrive Join Date: Jun 2019 Location: Toronto iTrader: (0)	Happen to me 2nd week i got the car lol.... fixed it with fuel line and hose clamps till i got the new part
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02-01-2021, 05:16 PM	#12
thejeremyman9 Major General 4358 Rep 7,591 Posts Drives: 2015 BMW 335i Join Date: May 2019 Location: Cali iTrader: (0)	https://f30.bimmerpost.com/forums/sh....php?t=1547622
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