Why would my Differential Control Module be unplugged???!!!

03evoIII · 04-11-2018, 10:46 PM

So I have been getting a Chassis Stability malfunction, second time in 3 weeks since owning this car. It has been to the dealer to get 'fixed' once already. Since it happened again today I wanted to get under the car to see if any wires were lose on the suspension components. When I was disconnecting the battery, I found this module unplugged, just the rear connector was unplugged, not the top smaller connectors. Any reason why this may have been done? I'm starting to think whoever owned this car before or worked on it was a hack or trying to hide something. Appreciate the help!

Edit - Is this the EDC Module? I was reading that people disconnect this when coding out EDC? Just looking for some clarity on this.

milk242 · 04-12-2018, 11:14 PM

That is the edc module and most likely was disconnected when they replaced their suspension with aftermarket coilovers. Weird that the dealer didn’t catch it.

F3IGHTY · 04-13-2018, 08:36 AM

Quote:

Originally Posted by milk242

That is the edc module and most likely was disconnected when they replaced their suspension with aftermarket coilovers. Weird that the dealer didn’t catch it.

Nope, GHAS controls the diff. VDC controls the EDC dampers.

milk242 · 04-14-2018, 05:17 PM

Quote:

Originally Posted by F3IGHTY

Nope, GHAS controls the diff. VDC controls the EDC dampers.

My bad.

Not to sure why that would be disconnected then.

03evoIII · 04-15-2018, 11:07 AM

Yeah agreed ...strange that they didn’t catch it especially when trying to resolve a chassis stability malfunction. It’s obvious they didn’t do much investigation to try and actually resolve the issue. I had EDC coded back in. Alex from Alpine MS found my two front shocks were showing up not even connected. Upon inspection I saw a rubbed through wire on the front driver side shock sensor (idiots who put the stock suspension back on didn’t even put the wire back into its holder on the shock) due to tire hitting it. I fixed it and now I’m getting a “chassis malfunction - contin driving possible”. Thanks for the responses!!

Marvins · 03-05-2020, 06:35 PM

Sorry to revive this thread but did you ever find out why the GHAS was disconnected?

Rumour is this is done when you have a differential upgrade that no longer requires the components connected to it, I.e the servo motor.

FrozenGT · 03-09-2020, 08:22 AM

I don't get how people are buying M cars without having them fully checked over. Was your car BMW certified?

04-11-2018, 10:46 PM	#1
03evoIII Scot - 2015 M3 SO 4 Rep 47 Posts Drives: 2015 Sakhir Orange BMW M3 Join Date: Mar 2018 Location: Parker, Colorado iTrader: (0)	Why would my Differential Control Module be unplugged???!!! So I have been getting a Chassis Stability malfunction, second time in 3 weeks since owning this car. It has been to the dealer to get 'fixed' once already. Since it happened again today I wanted to get under the car to see if any wires were lose on the suspension components. When I was disconnecting the battery, I found this module unplugged, just the rear connector was unplugged, not the top smaller connectors. Any reason why this may have been done? I'm starting to think whoever owned this car before or worked on it was a hack or trying to hide something. Appreciate the help! Edit - Is this the EDC Module? I was reading that people disconnect this when coding out EDC? Just looking for some clarity on this. Attached Images __________________ Scot - 2015 M3 Sakhir Orange, catback, BM3 Last edited by 03evoIII; 04-11-2018 at 10:56 PM..
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04-12-2018, 11:14 PM	#2
milk242 Captain 184 Rep 760 Posts Drives: Car Join Date: Apr 2008 Location: Dallas iTrader: (4)	That is the edc module and most likely was disconnected when they replaced their suspension with aftermarket coilovers. Weird that the dealer didn’t catch it.
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04-15-2018, 11:07 AM	#5
03evoIII Scot - 2015 M3 SO 4 Rep 47 Posts Drives: 2015 Sakhir Orange BMW M3 Join Date: Mar 2018 Location: Parker, Colorado iTrader: (0)	Yeah agreed ...strange that they didn’t catch it especially when trying to resolve a chassis stability malfunction. It’s obvious they didn’t do much investigation to try and actually resolve the issue. I had EDC coded back in. Alex from Alpine MS found my two front shocks were showing up not even connected. Upon inspection I saw a rubbed through wire on the front driver side shock sensor (idiots who put the stock suspension back on didn’t even put the wire back into its holder on the shock) due to tire hitting it. I fixed it and now I’m getting a “chassis malfunction - contin driving possible”. Thanks for the responses!! __________________ Scot - 2015 M3 Sakhir Orange, catback, BM3
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03-05-2020, 06:35 PM	#6
Marvins New Member 7 Rep 20 Posts Drives: M5 F10 Join Date: Mar 2020 Location: Germany iTrader: (0)	Sorry to revive this thread but did you ever find out why the GHAS was disconnected? Rumour is this is done when you have a differential upgrade that no longer requires the components connected to it, I.e the servo motor.
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03-09-2020, 08:22 AM	#7
FrozenGT Captain 1144 Rep 846 Posts Drives: 2021 Z4 M40i - Lexus NX300 F Join Date: Oct 2019 Location: Ashburn VA iTrader: (1)	I don't get how people are buying M cars without having them fully checked over. Was your car BMW certified?
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