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Old 10-27-2013, 02:43 PM   #1
ajfaccini
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Help required - wet fuse box

Hi guys,

After a little bit of help, had a problem with my mk 2 focus the other day, Seems that after going through a large puddle flooding the road I've ended up with some water in the fuse box. This wasn't noticed at first and got home, shut the car up and went to bed...

The problems started the next morning, noticed the battery was flat so charged it, now that issue is sorted the battery was put back in place and the car starts etc, moves and all the electronics work as they should when running.

however when the car is shut down Im having problems with the windscreen wipers juddering and moving by their own accord, the internal light of the car stays on or comes on randomly, the bleep that you get when you aren't wearing a seatbelt randomly sounds...

Just to save the battery for tonight I've unplugged the battery to stop all the problems and to stop it draining the battery but does anyone have any idea if,

A) There is a weakness anywhere that might let water in to the fuse box,
B) There is an easy way to dry the fuse box other than just leaving it to dry on its own,
C) If there is a fix to stop this happening again,
D) Have any idea if any long lasting damage can/has been caused.

Many thanks in advance for any help you can offer and just to add this is the fuse box on the passenger side of the car, not the one next to the battery compartment under the bonnet.


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Old 10-27-2013, 03:43 PM   #2
Bogey
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Rice is very good at absorbing, possibly put some rice in a coffee filter and leave it in the fuse box?
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Old 10-28-2013, 02:09 PM   #3
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How deep did you go through?

It may be too late, but you are going to need to disconnect ALL harnesses from the fuse box, along with all fuses and relays.

You will need to spray it all out very quickly with air, and possibly even 99% rubbing alcohol to help extract the moisture. Rice, silica gel (from shoe store) will also help.

Unfortunately, it's likely you will always have electrical gremlins after this as the corrosion has already begun to set in.
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Old 10-28-2013, 02:35 PM   #4
ajfaccini
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Hi guys thanks for the replies! It seems to be fine now (Touch wood) Just have to be careful now with puddles.

I couldn't actually see how wet it got but did disconnect the main wiring harnesses from the fuse box and allowed it to dry as much as possible. Also I got in to it with a few cans of compressed air and a hair dryer etc!

It does seem as though there is a weakness somewhere, its just a case of trying to find how and where water had got in.

Thanks for your help!
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Old 10-29-2013, 01:46 AM   #5
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Which fuse box? Maybe a dehumidifier?
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Old 10-29-2013, 12:17 PM   #6
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It still may come back to haunt you. I'd continue to pull everything apart once or twice more to make sure.

Definitely see if you can get some silica gel for it.
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