Help for Connections for Command system
Do anybody have the diagram over the connection on this command system?
Trying to put a new system in, but can’t find the can high/low to start signal.
Thank you very much.
https://mercedes.7zap.com/de/eu/fg/c...220025/fg/0/0/
Last edited by bamberger_1; Nov 26, 2019 at 04:51 PM.
https://mercedes.7zap.com/de/eu/fg/c...220025/fg/0/0/
The car is original from Germany, but came to Denmark in 2013. The radio on the photos is from my car.
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The 98-2003 S class vehicles had several incompatible audio/navigation/telephony systems. Two MAIN differences Command 2.5--the EARLIER systems are different form factor and was CD disc only. for navigation. The later version 2.0 (yes later one was 2.0 while earlier was 2.5) used DVD discs. Both of these used D2B Fiber Optic wiring for ANALOGUE communications in series through everything. There were different versions > You must get a copy of the BUILD SHEET to verify what was installed at the factory for your specific vehicle. The whole network dies if any component fails to connect quickly.. The emergency telephone radio contact device is prone to failure and often by-passed.They then changed to the MOST network protocol Car Area Network onboard network which is a DIGITAL communication system and every component is different from D2B fiber optic units.
The number of possible component form factors, communication protocols, analogue or digital, D2B or MOST, are dizzying. The factory 'Build Sheet' will at least tell you what was there and connected (working) leaving the factory.. Do not expect the Dealer Techs to be much help here except by sheer luck. The 'learning curve' is very steep and not often used so most don't bother with all the study required.




