[ehale50]

I recently purchased a 2007 335i really cheap that had a multitude of problems, the few things that I couldn't find an answer for were no audio, idrive controller didn't work, and a passenger airbag fault. All the search results from multiple forums didn't help me fix the problem, after a lot of troubleshooting I found a corroded plug in the driver (left) floorboard under the carpet left side that was badly corroded with pins broken, I cut the plug off and soldered the wires together and that fixed all my problems. It is a small plug with 5 or 6 wires.

[mecheng77]

Interesting, post a pic if you can

[TunafishE93]

I am guessing X1716?? Its a six pin plug about where you described..

https://www.newtis.info/tisv2/a/en/e...-x9331/RJjERP6

[ehale50]

Originally Posted by TunafishE93

I am guessing X1716?? Its a six pin plug about where you described..

https://www.newtis.info/tisv2/a/en/e...-x9331/RJjERP6

Yes that's the one, there was water in the floorboard causing the corrosion.

[TunafishE93]

Good info thanks.

[AngelFarelli]

👌

[gbalthrop]

This Thread was Cross-posted to Bimmerfest, and here is link with more discussion (but OP has NOT confessed there YET ;-):
https://www.bimmerfest.com/forums/sh....php?t=1366747

I just noticed this thread on this Forum @ ~ 8:15 PM -- Honest "TunafishE93"

MY "Guess" is that your "guess" was MORE than a "guess". Care to share your secret (which obviously has something to do with TIS).

George

[TunafishE93]

No I was trying to figure out where those wires go.. Didn't see the other thread.. I will give credit where credit due.. I did find some weird stuff in the wiring diagrams though.. They have pins makes 7 and 8 but say it's only a 6 pin connector...
And mine was posted before the other forum .. So what's your secret?

[gbalthrop]

The following post by "ehale50" and Reply by me with 2 questions were posted on Bimmerfest:

Originally Posted by ehale33

The purpose of my post was just to let anyone with unexplainable electrical problems was to check for moisture or water in the floorboards, im no mechanic just a utube parts changer. The plug that was bad did have 8 places for wires with only 6 or 7 wires and only 5 or 6 passed thru or were used, i'm not sure of color I just cut one at a time and spliced them together.

Thanks for the Reply. Just two questions:

1) Do you remember if the Connector (a) was "flat & wide" & had all the sockets/pins in ONE row, like the Connector View of X1716 shown in the first link, or (b) was more "square" & had two rows of sockets/pins, like the Connector View of X9331 shown in the second link?
https://www.newtis.info/tisv2/a/en/e...x1716/CT77PMTg
https://www.newtis.info/tisv2/a/en/e...x9331/CTBEq2Dh

2) Do you remember if the Connector/splice point was on the flat/horizontal Floor of the footwell like X9331 in the Installation Location linked below, or on the more vertical transition to the firewall, like X1716?
https://www.newtis.info/tisv2/a/en/e...716/1VnXucB25c

Thanks for any reply, as I realize you would like to do other things. I'm just trying to understand the electrical system.

George

[Evilbean]

These connectors break easily