Focus MK3 Water in boot - Leak repair

In this video, I will be going through the process of repairing the rear vents which are the main cause of water leaks into the boot of the Ford Focus MK3, made from from 2011to 2016.
First signs are condensation inside the car and then water pooling in the spare wheel well. Then, when it accumulates too much water, it starts to slosh around and to leak into the footwells.
This is what happened to my wife's car.
This process includes the removal of the trim, rear lights, bumper and vents, plus removing the remaining water and resealing the vents with Tiger Seal

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[richardpoynter]

One of the best, most in-depth videos on YouTube! Fantastic work well done

[geoffedgcombe]

My friend, you are a legend! Had exactly the same problem and fixed it exactly the same way. Your instructional video was perfect and helped immensely. I am not a "car person", but managed to fix this problem with your help. Thank you, thank you, thank you!

[richardbond]

great video, was a great help. just a couple of things which I found when I followed your video 1:- I don't think you have to remove the inner trim on either side as the rear lights bolts can be accessed without removing it,
2. If the drain plugs below the vents is removed you can unclip the vents without braking the lugs with the use of a screw driver. cheers

[bassfacer]

There are a few videos tackling this problem but yours is by far the most thorough, both in terms of method and presentation. Other people just reached under and pulled the rubber plugs out of that cavity to allow water to drain through the rear subchassis, but that could result in rust issues in the future. Your method is a lot more work but a much more thorough job.

[chriswarrington]

Fantastic video. I've got the same car and the same problem. I had no idea it could be the vent. I didn't even know there was a vent there! Much appreciated 😌

[limsivimsi]

Bought this car supercheap yesterday. And found a poolparty in trunk the day after 😅 *THIS* video looks exactly like my problem ❤ I love you (and also guys in comments) This will be a great time for me and my son. We will crash the poolparty next weekend 🥳

[teeshabaggs]

Today me and my boyfriend followed your video step by step with success, thank you very grateful, fingers crossed the water in the well doesn't return.

[TroyaJamilyn]

I went to check the air pressure in my spare tire, which was low so I got it back to spec and in doing so I discovered the whole ring-shaped pad underneath the tire was soaked. Not too much water in the well itself and it was easy to clean. I'll drain those compartments tomorrow and then maybe next week if the weather is good I'll do this fix. The car is over a decade old and this is the first time I've found it wet in there, and the car sits in the rain all winter long, so it seems the seals on mine lasted a good long time before going. Thank you for the effort and time you took to make this video. At least it's not too difficult of a thing to fix.

[stevepettifer]

Did this at the start of the first lockdown in 2020 and cured the problem. From memory, there was no need to remove the internal boot trims, you can do it without that. As for the clips on the vents, if you're sticking it in place with sealant anyway then don't stress if they break. Crap plastic anyway. For those asking what is the point of the insulation, it's sound deadening AFAIK, and stopping water getting in where it shouldn't is far better than letting it in and then slowly draining through the bung hole. In winter it'll probably never really dry out and yes, it will accelerate the formation of rust as over time it will allow the protective coatings to be damaged and then you will get rot. The bung is definitely there for a reason - if there wasn't a reason then Ford, penny pinchers that they are, would not include it.

[FabioPiccolo-fd]

Great, great, great tutorial. Did this procedure today on my 2011 mk3. I have it currently in my garage with the bumper unmounted, waiting for the insulation to dry out before sealing back the vents, which I will do tomorrow. Only one note: I totaled the "big" vent on the right side, just to find out that it's easier to remove first the "small" vent (the one on the trunk door side), which goes off easily, then push the clips on the bigger vent through the small vent hole. I removed the vents on the left side in this way without breaking any clip. Hope this helps.

[guppylove]

This video absolutely save my skin. I’ve just brought a 2012 focus with this exact problem. I followed every part of your video although I did drill out the rivets for the bumper retaining bracket just to make life easier and make sure the seal is 100% great stuff. Thank you very much for your video.🎉

[jamesussher]

Very good video - never would of found the problem without this video - all fixed start to finish about an 1 1/2 hours - An hour to take apart and 1/2 hour to put back together

[mervynsprocket]

Thank for such a comprehensive video. My daughter's car has the exact same symptoms. This gave us confidence to effect the solution

[AcousticFool]

Great video mate. I have just bought an ST3 and i noticed that the lower part of the passenger seat back rest was darker alnost as if the leathers had been contaminated, when I checked it the other day after it rained it was noticably wet. After seeing your video and how only one side had failed it makes sense now. First dry day I get I'll be investigating those vents 👍

[predatorcube]

My MK3 to same issue. But like yours only from the driver's side. Once the weather improves I will try to fix it. Thnx for the video. 🤝

[celicaben]

Thanks for the video, very precise. I know what im doing this weekend

[AndyBunyard]

You sir are a legend 🙌 thank you for the detailed video!! .. just done mine today following every step👍 fingers crossed it fixes it lol. Cheers

[MrGsh]

Thanks for your video, I have the same issue and I have just sealed up my vents, fingers crossed it works.

[hughcornes]

Brilliant in depth video. Must have taken a lot of time to film and edit it so well. Thanks for the effort!

[selassiewarrior]

Thank you I was scratching my head until I found you !