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On Demand Coupling Module for Rear Differential (RDCM)
eastrnma
 

Posts: 29
Joined: Dec 2011
Location: Boston
Post: #1
On Demand Coupling Module for Rear Differential (RDCM)

Has anyone experienced this module failure? Perhaps SSM 72237... Any info/insight will be appreciated. Is this a hardware fix or sensor module?
(This post was last modified: 11-03-2016 01:07pm by eastrnma.)
11-03-2016 02:10am
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eastrnma
 

Posts: 29
Joined: Dec 2011
Location: Boston
Post: #2
RE: On Demand Coupling Module for Rear Differential (RDCM)

Update: Wasn't the RDCM... Looking at rear differential/transfer case/Haldex.... huge repair at 80k miles.
18-03-2016 10:50pm
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wheels
 

Posts: 155
Joined: Jul 2015
Location: Sweden
Post: #3
RE: On Demand Coupling Module for Rear Differential (RDCM)

Did it leak oil?
19-03-2016 04:54am
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jitenc
 

Posts: 550
Joined: Sep 2011
Location: london
Post: #4
RE: On Demand Coupling Module for Rear Differential (RDCM)

What is the difference in driving when you get this failure? Does it make a grinding noise around 40mph?
My Evoque has done 60k miles and the grinding noise looks like it coming from underneath the car.

Got mine : Dynamic Fuji White with Lux Pack and black contrast roof.
Optional extras : Privacy glass, Heated steering wheel and TPMS.
Me: Very HappyVery Happy
19-03-2016 06:04am
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eastrnma
 

Posts: 29
Joined: Dec 2011
Location: Boston
Post: #5
RE: On Demand Coupling Module for Rear Differential (RDCM)

Didn't leak oil that I noticed... The problem started as what felt like a slight surge or slip of the front or rear wheels (it seemed to vary) under acceleration up to about 30mph. Started out intermittently at first, and quickly became quite regular between 0-50mph. Dealer reported it was switching between 2 and 4 wheel drive, but it felt to me that the traction control was engaging randomly.
19-03-2016 12:42pm
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eastrnma
 

Posts: 29
Joined: Dec 2011
Location: Boston
Post: #6
RE: On Demand Coupling Module for Rear Differential (RDCM)

Another update: Wiring harness fault caused intermittent communications with the RDCM and subsequent rear differential failure.
25-03-2016 10:36pm
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Stevendi
 

Posts: 1
Joined: Aug 2018
Location: Uk
Post: #7
RE: On Demand Coupling Module for Rear Differential (RDCM)

Hello, I'm new here I've just had a cable on the wiring harness for the on demand coupler break.

It's with range who have said you can not just get a spare wire. Instead have quoted me 1800 for a new on demand coupler and 1900 for labour as it takes 18 hours to fit.

I was just wondering how you repaired it in the end?

Thank you
09-08-2018 04:27pm
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