How to Disable Benz W211 SOS Warning Error with DAS?

It is a 2004 Mercedes E320. Been battling with the annoying SOS inactive code for months. Every 5 mins or so randomly the audio cuts out while driving and the white TeleAid SOS warning error pops up on the instrument cluster.

Solution:

This is how it’s done.

 

Permanent solution is to deactivate using MB STAR Diagnostic Software DAS/XENRTY: Control Units – Body – CGW (Central Gateway) – Control Unit Adaptations – Read Coding and Change if Necessary – Telecommunications – Telematics Service “Tele Aid” in combination with MOST technology. Change the coding from PRESENT to NOT PRESENT.

For Pre-2006 car you will 100% need MB special diagnostic system (SD Connect C6, VCI C6 or VXDIAG VCX SE Benz DoIP) with Xentry/DAS software. Neither an OBD2 scanner nor Xentry Passthry worked. Needed an actual MB Star multiplexer.

 

IN DAS::
1. Control unit groups -> Info and comms-> Audio,video,nav ->control unit adaptations->read coding and change if necessary->specified config of MOST-> telematics-> set to NOT PRESENT-> carry out coding.

2.Control unit groups -> body->CGW->control unit adaptation->read coding and change if necessary->telecommunications-> telematics-> set to NOT PRESENT->carry out coding.

3. (Optional) remove the physical control module from the car. You’ll have to put in a fiber optic loop where it was. They’re like $10 on Amazon.

Edit: Keep the TELEAID set to “PRESENT” in the Airbag Module otherwise you will get an SRS code. The SRS needs to be able to output data to the module if it is still in the car.

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