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MK3 TSB, Recall & Problems Archive The place to chat about TSB and Known Issues for the 2012 Focus.

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Old 05-28-2018, 03:59 PM   #31
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Mine appears to be fixed now. I replaced the reservoir and I replaced the cap again, this time using a Motorcraft cap.
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Old 08-01-2018, 12:44 PM   #32
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Quote:
Originally Posted by maxpowers View Post
Mine appears to be fixed now. I replaced the reservoir and I replaced the cap again, this time using a Motorcraft cap.

The new cap seems to have fixed my issue too. I've put about 6K on my 2014 since replacing the cap with an OE and I haven't seen a drop in the coolant level in the surge tank...thankfully.
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Old 08-01-2018, 12:58 PM   #33
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Just an update for the comment I made below...

Use silicone paste (dielectric grease) on the cap o-rings and they will never "stick" in the neck and make it hard to take off again. Vaseline doesn't hold up well to the heat.


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It's only $8. Smear a thin film of vaseline on the reservoir neck where the two orings in the cap seal against it.:
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Old 08-01-2018, 01:03 PM   #34
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Mine would drop a bit below MIN and settle. I'd fill it, and it would repeat, so I just learned to live with it. I did a drain/fill a few weeks ago, and it hasn't dropped a bit since I filled it to MAX. Hopefully it stays that way.
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Old 08-01-2018, 01:27 PM   #35
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Mine still seems to be holding well since I overfilled it. Weird, but I am not complaining.
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Old 01-19-2019, 12:51 PM   #36
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I just checked mine yesterday and found the coolant level below the minimum level. This is the first time I’ve noticed this. Oddly enough I had it at the dealership just last week getting the purge valve recall done. I’m surprised that they neglected to check fluid levels since they were trying to push a bunch of maintenance items that I’d already taken care of.

I’ll try the coolant cap and report back if this continues.
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Old 01-19-2019, 01:08 PM   #37
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It's funny a reply should pop up as my car has gone back to playing games again and dropping the coolant level after probably a year of stability.
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Old 02-06-2019, 08:41 PM   #38
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Ive had my 2012 focus se hatchback since new...i currently am almost to 250k on it...can i give all the posters on the coolant loss a suggestion from what ive seen? Ok....here goes....two hoses with coolant one takes in n one brings out....firewall....heater core? Anywho...there is a felt pad of sorts on the firewall....check around the hoses after driving the car and see if the felt is damp there....it seeps into the felt and you cant tell its oozing out....the problem is the hoses are not clamped on there from my experience....they are both a quick connect fitting....inside each is a black oring that starts to disintegrate a bit...just enough it seeps coolant by....just something you can check...unfortunately i havent found an exact fit of the oring....buy the hose units
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Old 02-23-2019, 06:20 PM   #39
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A somewhat common place for a focus to leak coolant is from the degas bottle, check to see if it's damp on the bottom. They all crack in the same spot, underneath the bottle, above the engine mount. The coolant level dropping half way down toward minimum seems a bit too much
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Old 08-06-2019, 11:51 AM   #40
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Hidden coolant leak finally found

Hey Folks,

I have had a annoying coolant leak from 30 days from new.

I top up the reservoir every 3-4 months. Dealer said there was no issues.

She left me stranded for the 1st time this weekend.

Initially, it looked like the hex head frost plug on the top right side of the cylinder head. Removed, examined and reinstalled.

Directly below the plug is the coolant adapter.
Four bolts and four hoses and a sensor later.

There was part of the internal gasket plastic wall completely missing and the stretched out rubber no longer able to do the job. Defective since it was installed. It was only the sweet smell.. I could never actually find the source until now. Hope this can help somebody else. See pics
Attached Thumbnails
Coolant loss-20190805_094736_li.jpg  

Coolant loss-20190805_094759-1-_li.jpg  

Coolant loss-20190805_094719p.jpg  

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