N57 Diesel flooded DDE?

capt_slow · 05-17-2026, 11:41 AM

Quote:

Originally Posted by Mio

Hello,
"Thank you for your reply. I did that too, but unfortunately my control unit is already full of diesel, i have to get another one!.

It is "moist" in there, but doenst look like diesel is pouring out of the DDE. I would try the least aggressive method first. Unplug the battery. Thoroughly spray the DDE connectors and harnesses with electrical contact cleaner, allow the residue to run off to a towel. Then, let the connectors dry out.

I would also focus on pins 10, 22, 57, and 58 of the large DDE connector as those go to that pesky sensor.

Mio · 05-17-2026, 01:33 PM

Quote:

Originally Posted by capt_slow

It is "moist" in there, but doenst look like diesel is pouring out of the DDE. I would try the least aggressive method first. Unplug the battery. Thoroughly spray the DDE connectors and harnesses with electrical contact cleaner, allow the residue to run off to a towel. Then, let the connectors dry out.

I would also focus on pins 10, 22, 57, and 58 of the large DDE connector as those go to that pesky sensor.

I have already cleaned everything with the brake cleaner, blown it out and let it dry. I turned the control unit upside down and made it a bit hot with a hair dryer, but I didn't get out sooo much. Then i cleaned and dried everything with a brake cleaner. The car ran about 30 - 45 minutes, then went out again with 50 - 60 embassy errors. I will try to clean everything again with an electric cleaner, but don't think that will help

ssf556 · Yesterday, 10:12 AM

For anyone coming into this thread I would add a check the DDE to your PM plan. In the case of a 328d it is rather easy to get to the DDE...in a 2018 X5 it takes a little bit of work but worth it. Put you eyes on them monthly if possible.

cezar22 · Yesterday, 12:36 PM

I probably need to worry about this because I have a cracked LCI unit with a tune on it.

Anyone know if there is a process to buy a new unit and crack it and copy the firmware over, to have as a spare?

ssf556 · Yesterday, 04:51 PM

Quote:

Originally Posted by cezar22

I probably need to worry about this because I have a cracked LCI unit with a tune on it.

Anyone know if there is a process to buy a new unit and crack it and copy the firmware over, to have as a spare?

DuDMD can copy DDEs

cezar22 · Yesterday, 05:45 PM

Quote:

Originally Posted by ssf556

DuDMD can copy DDEs

good stuff,. thanks. that name rings a bell

Yesterday, 10:12 AM	#25
ssf556 Second Lieutenant 84 Rep 236 Posts Drives: 2018 X5d 2018 328d Join Date: Mar 2022 Location: SC iTrader: (1)	For anyone coming into this thread I would add a check the DDE to your PM plan. In the case of a 328d it is rather easy to get to the DDE...in a 2018 X5 it takes a little bit of work but worth it. Put you eyes on them monthly if possible. __________________ https://hbf.shopamsoil.com/
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Yesterday, 12:36 PM	#26
cezar22 Private First Class 52 Rep 148 Posts Drives: 2016 328dX Join Date: Oct 2020 Location: The South iTrader: (0)	I probably need to worry about this because I have a cracked LCI unit with a tune on it. Anyone know if there is a process to buy a new unit and crack it and copy the firmware over, to have as a spare?
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