These are Mercedes MB Star diagnosis DAS and MB SD Connect C4 communication solutions by obd2tool technicians:
DAS Fault (1.2)-2.503.9901 with the error “Communication failed”
MB SD connect c4 main unit displays “Device not in use”
This issue usually can be solved as follows:
– re-set IP address:
1) Connect MB SD Connect C4 with LAN cable
2) Open Virtual Network Editor and use vmnet0 (Auto-Bridging )
3) Install (2 ) Local Area Connection
4) Set IP:
Local Area Connection ( 1 ) IP 172.29.127.XXX this for IP MUX
Local Area Connection ( 1 ) IP 192.168.1.XXX this for IP network or IP Network you use
5) Make configuration for SD connect wireless,
(SD C4 usually solve the issue after IP re-match)
– setup the PC date
The date must be the same as the software version
E.g. Your DAS is 2016.09 version, then your PC date should be 2016/09
– replace the Config file in c:\program\mecredes-benz\config
(this is for Mb Star C3 users)
STAR C3 Config file download
https://mega.nz/#!vhFEXBiL!jeFN5y38eCEH3ZitnQ2lvOGKBn3hJTWb4KsZ70I537k
Enjoy！
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