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      01-23-2018, 11:55 AM   #1
Onthatb0mbshell
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F13 640D Water logged rear passenger footwell

Hi,
Hoping someone knows of the cause of this problem, have noticed the last few days that
rear footwell is saturated with water, thought at 1st maybe a water bottle leaked but definitely not the problem. A quick search suggests something about drains attached to pollen filters?
Any help or recommendations appreciated.
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      01-24-2018, 05:07 AM   #2
NINJA59
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It will be this problem...

http://forum.bmw5.co.uk/topic/116098...in-water-leak/

Essentially the bonnet hinge drain then has a drain down to this area. Now the actual firewall panel is the same for LHD and RHD vehicles. For RHD they take both holes out instead of just the RHD for the steering column. The hole left where the LHD steering column would be is then covered in a yellow grommit.

Unfortunately this area can fill with rubbish and then eventually not drain properly. In so doing the yellow grommit will fail. Some people put holes into the insulation panel to allow it to drain better others just remove it now and again.

The reason for the rear first on the passenger side is because the foam backing up front is thicker and the rear is thinner.

The yellow grommit part number is somewhere in that thread as well.

You may be able to reach down from above and remove it and clean it as well as look at the condition. Other go from underneath the car to do the same.

This potential issue can cause problems on anything sharing this chassis (F01 and the other versions, F06,F07, F10,F11,F12,F13 and from memory the Rolls Royce Ghost, Dawn and Wraith share a similar solution).

5' F07 GT   (09/2008 — 06/2013)
5' F07 GT LCI   (08/2012 — 02/2017)
5' F10   (01/2009 — 10/2016)
5' F10 LCI   (08/2012 — 10/2016)
5' F11   (01/2009 — 06/2013)
5' F11 LCI   (08/2012 — 02/2017)
6' F06 Gran Coupé   (05/2011 — 02/2015)
6' F06 Gran Coupé LCI   (05/2014 — 12/2017)
6' F12   (10/2009 — 02/2015)
6' F12 LCI   (05/2014 — 12/2017)
6' F13   (04/2010 — 02/2015)
6' F13 LCI   (05/2014 — 10/2017)
7' F01   (06/2007 — 06/2012)
7' F01 LCI   (05/2011 — 05/2015)
7' F02   (07/2007 — 06/2012)
7' F02 LCI   (05/2011 — 05/2015)
7' F03   (04/2008 — 05/2012)
7' F03 LCI   (01/2012 — 03/2015)

Last edited by NINJA59; 01-24-2018 at 05:13 AM..
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      01-24-2018, 07:03 AM   #3
Taheemr
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I had this on my f10 tried everything to no end, seals, membranes, blocked drain holes etc, etc, in the end there was a rubber bung missing from the base of the door that was causing water to leak when the door was closed, i suggest you take a look, may be a cheap easyfix
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      01-24-2018, 08:38 AM   #4
NINJA59
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Quote:
Originally Posted by Taheemr View Post
I had this on my f10 tried everything to no end, seals, membranes, blocked drain holes etc, etc, in the end there was a rubber bung missing from the base of the door that was causing water to leak when the door was closed, i suggest you take a look, may be a cheap easyfix
Would agree this is possible on an F06/F07/F10/F11 with a set of rear doors (and I do know people have had issues with the membranes and other seals etc), but the F13 does not.

The fact it is appearing in the rear almost categorically means the yellow grommit is to blame.
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      01-24-2018, 10:26 AM   #5
Taheemr
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Quote:
Originally Posted by NINJA59 View Post
Would agree this is possible on an F06/F07/F10/F11 with a set of rear doors (and I do know people have had issues with the membranes and other seals etc), but the F13 does not.

The fact it is appearing in the rear almost categorically means the yellow grommit is to blame.
Yes in my view membranes / seals etc should not fail on relatively new cars, i have a 30yr old e24 and thats air tight still !!
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      01-25-2018, 07:19 AM   #6
Onthatb0mbshell
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Thanks Ninja59, I'll pass on info to my Mechanic and get him to check it out.
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