Another coolant leak thread.

PR X13.5i · 06-09-2021, 10:29 AM

Hello.

Been lurking around for a while, first time posting.

Got a 2013 X35i a couple of months ago. It's been leaking coolant. So far radiator, main hoses, coolant reservoir tank and trans. cooler hoses have been replaced. The thing is that the leak is not obvious at first and after about a half hour of driving the coolant leaks out, loosing about half of the systems capacity very quickly.

Any ideas what might be happening?

Thanks.

AK_Wes · 06-09-2021, 04:44 PM

Can you actually see where the coolant is leaking from? Post a couple photos when you get a chance.

chance91 · 06-09-2021, 05:28 PM

Have you checked the oil to make sure its not leaking into the oil?

Three places it can go:
1. on the ground/engine bay

2. into the oil (via the oil cooler housing youtube

3. into the combustion chamber. This appears to be pretty rare on n54/n55 motors. Options are usually head gasket, head or turbo problem, and exceptionally rare.

PR X13.5i · 06-09-2021, 07:06 PM

Coolant went to the ground. Leak was on the right of the radiator. Could notice the coolant gushing out where the hose connects to the radiator. (power steering fluid reservoir side). Car hasn't overheated, no check engine lights.

Sorry for the crappy images.

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bassrebel · 06-10-2021, 05:01 AM

How many miles?

Has it had the the water pump replaced?

Something like that dragged happening to me... it wouldn't leak right away, just when it would activate and it turned out to be the water pump... went ahead and replaced it, as well as the thermostat and haven't had a problem since

PR X13.5i · 06-12-2021, 10:21 AM

Hello.

The car has right around 50k miles. Looks like a water pump and thermostat replacement will be done anyways. That should stop the leaks for another 50k miles.

Thanks for the help.

chance91 · 06-14-2021, 01:56 PM

Quote:

Originally Posted by PR X13.5i

Hello.

The car has right around 50k miles. Looks like a water pump and thermostat replacement will be done anyways. That should stop the leaks for another 50k miles.

Thanks for the help.

You may want to contact the dealer. There was a class action last month for water pumps on some vehicles, not sure if n55s are covered.

cwickberg · 06-15-2021, 05:08 PM

does your X1 have a transmission cooler

AK_Wes · 06-15-2021, 07:01 PM

Quote:

Originally Posted by cwickberg

does your X1 have a transmission cooler

I believe so!

chance91 · 06-15-2021, 09:01 PM

https://www.carcomplaints.com/news/2...by-judge.shtml

Here is the judgement. Dealers are already going them. Free for 1 year for any mileage, then after that 10yr warranty extension from original build.

06-09-2021, 10:29 AM	#1
PR X13.5i New Member 12 Rep 25 Posts Drives: BMW X1 xDrive 3.5i Join Date: Apr 2021 Location: Caguas, PR iTrader: (0)	Another coolant leak thread. Hello. Been lurking around for a while, first time posting. Got a 2013 X35i a couple of months ago. It's been leaking coolant. So far radiator, main hoses, coolant reservoir tank and trans. cooler hoses have been replaced. The thing is that the leak is not obvious at first and after about a half hour of driving the coolant leaks out, loosing about half of the systems capacity very quickly. Any ideas what might be happening? Thanks.
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06-09-2021, 04:44 PM	#2
AK_Wes Private 3 Rep 77 Posts Drives: 2015 BMW X28i Join Date: Oct 2018 Location: Anchorage, AK iTrader: (0)	Can you actually see where the coolant is leaking from? Post a couple photos when you get a chance.
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06-09-2021, 05:28 PM	#3
chance91 Private First Class 23 Rep 112 Posts Drives: 2011 Bmw 335d Join Date: Aug 2015 Location: Minnesota iTrader: (1)	Have you checked the oil to make sure its not leaking into the oil? Three places it can go: 1. on the ground/engine bay 2. into the oil (via the oil cooler housing youtube 3. into the combustion chamber. This appears to be pretty rare on n54/n55 motors. Options are usually head gasket, head or turbo problem, and exceptionally rare. __________________ =\|\|=2011 BMW 335D MSport =\|\|= - gone but not forgotten 2008 BMW 335i FBO 2015 BMW x1 35i DD, mhd stg1 2005 MX-5 LS swap
	Appreciate 1 PR X13.5i12.00 Quote

06-09-2021, 07:06 PM	#4
PR X13.5i New Member 12 Rep 25 Posts Drives: BMW X1 xDrive 3.5i Join Date: Apr 2021 Location: Caguas, PR iTrader: (0)	Coolant went to the ground. Leak was on the right of the radiator. Could notice the coolant gushing out where the hose connects to the radiator. (power steering fluid reservoir side). Car hasn't overheated, no check engine lights. Sorry for the crappy images. [IMG]undefined[/IMG][IMG]undefined[/IMG]
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06-10-2021, 05:01 AM	#5
bassrebel The Lazy one... 54 Rep 344 Posts Drives: 16 C300 4Matic Join Date: Mar 2012 Location: NYC, UES iTrader: (3)	How many miles? Has it had the the water pump replaced? Something like that dragged happening to me... it wouldn't leak right away, just when it would activate and it turned out to be the water pump... went ahead and replaced it, as well as the thermostat and haven't had a problem since __________________ Follow me on Instragram @bassrebel *2014 BMW x1 x3.5i 2016 Benz C300 4Matic*
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06-12-2021, 10:21 AM	#6
PR X13.5i New Member 12 Rep 25 Posts Drives: BMW X1 xDrive 3.5i Join Date: Apr 2021 Location: Caguas, PR iTrader: (0)	Hello. The car has right around 50k miles. Looks like a water pump and thermostat replacement will be done anyways. That should stop the leaks for another 50k miles. Thanks for the help.
	Appreciate 0 Quote

06-15-2021, 05:08 PM	#8
cwickberg Second Lieutenant 32 Rep 279 Posts Drives: X1 35i MSport Ultimate, Join Date: Oct 2013 Location: United States iTrader: (0)	does your X1 have a transmission cooler
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06-15-2021, 09:01 PM	#10
chance91 Private First Class 23 Rep 112 Posts Drives: 2011 Bmw 335d Join Date: Aug 2015 Location: Minnesota iTrader: (1)	https://www.carcomplaints.com/news/2...by-judge.shtml Here is the judgement. Dealers are already going them. Free for 1 year for any mileage, then after that 10yr warranty extension from original build.
	Appreciate 0 Quote