No SOS or BT Phone after CIC removal

TechieCarGuy · 03-27-2017, 06:15 AM

I recently pulled the CIC head unit out of my 2010 135 in order to install one of Technics wiring harnesses and upon re-installation I got the no/SOS service error and now can not connect to my phone via BT, as if something didn't get connected correctly.

I pulled everything out again and check and all connections on the back of the CIC, but I am wondering if the MOST connectors are finicky and might give such an error if not seated correctly, or am I looking at a bigger problem. Or has my TCU gone bad all of a sudden?

Also, I loosened my center console, in order to run cables to the back of the car (RCA and remote lead from Technics harness) and discovered a Most connector and another plug at the rear most portion of the center console (facing the backseat). Neither were connected to anything but I am wondering what they are for and whether or not I overlooked something and one or both of these are my problem if they were originally connected to something and I accidentally disconnect, however there are only one end of said cables under the console and nothing else to plug into them, that I can see.

Duesentrieb · 04-04-2017, 03:06 AM

Hi,

sounds like a problem with the MOST. Have you plugged in them correctly? Have you removed the MOST cables from the connector? If so, you may have mixed up both wires: one is the input and one is the output.

Normally there isn't any MOST connector under the center console. Are you sure that it is MOST? Can you take a picture?

Greetings

Daniel

03-27-2017, 06:15 AM	#1
TechieCarGuy Private First Class 134 Rep 170 Posts Drives: 2011 E91, 2008 Z4 Join Date: Nov 2015 Location: Florida iTrader: (0)	No SOS or BT Phone after CIC removal I recently pulled the CIC head unit out of my 2010 135 in order to install one of Technics wiring harnesses and upon re-installation I got the no/SOS service error and now can not connect to my phone via BT, as if something didn't get connected correctly. I pulled everything out again and check and all connections on the back of the CIC, but I am wondering if the MOST connectors are finicky and might give such an error if not seated correctly, or am I looking at a bigger problem. Or has my TCU gone bad all of a sudden? Also, I loosened my center console, in order to run cables to the back of the car (RCA and remote lead from Technics harness) and discovered a Most connector and another plug at the rear most portion of the center console (facing the backseat). Neither were connected to anything but I am wondering what they are for and whether or not I overlooked something and one or both of these are my problem if they were originally connected to something and I accidentally disconnect, however there are only one end of said cables under the console and nothing else to plug into them, that I can see.
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04-04-2017, 03:06 AM	#2
Duesentrieb Enlisted Member 9 Rep 43 Posts Drives: E81 116i, F31 LCI 320d Join Date: Feb 2017 Location: Germany iTrader: (0)	Hi, sounds like a problem with the MOST. Have you plugged in them correctly? Have you removed the MOST cables from the connector? If so, you may have mixed up both wires: one is the input and one is the output. Normally there isn't any MOST connector under the center console. Are you sure that it is MOST? Can you take a picture? Greetings Daniel
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