Here are optional solutions for those
with a Sd connect C4
cannot be connected via LAN (or wifi).
Operation system: Window 7
Battery: the 6 batteries are
installed, fully charged
when I connect it to the MUX (the 6 batteries are
installed) it tries to connect but it gives up after a minute or
two and I have a yellow triangle over the network icon in
The display on the MUX shows that its number is 00, it also
displays a cable icon and a countdown timer and the
message “Device not in use”
The display doesn’t show the wifi option, only the cable
When I start SDConnect Administration Toolkit it says the MUX
is not cable accessible.
Here are possible solutions from users (try on your own risk) and
working solutions from real professionals but for SD connect mux
off obdexpress.co.uk (confirm yours is the same as that
in obdexpress if you want use the solution).
Possible solutions from users:
Option 1: LAN adapter
Open it and check the LAN adapter soldering if
it gone loose
SDConnect relies on broadcasts/multicasts (like the DHCP
protocol) to discover SDConnect devices. They can
be con completely different subnets and be “detected”
but you cannot interrogate or configure them until you get their
IP addresses configured for basic management setup.
Option 2: Toolkit
For Connection you´ll need the Toolkit.
WLAN is not seen until configured, if you reseted the
SDConnect you´ll need to reconfigure it with the Toolkit.
Option 3: Battery
You may try forcing your NIC in your laptop to 100Mb/Full Duplex,
as many will default and negotiate to 1Gb/s, which I don’t
believe some of the SDConnects talk over too well.
Also, FWIW, I have been getting an error 750 when trying to
communicate to the SDConnect recently. The connection seems
very unstable. I have only used a direct Ethernet connection.
I have not investigated it very much, but I have resorted
to the C3 for right now, which has never failed with 1.2012.
I reset it back to factory settings as well. I have not had
an opportunity to investigate it to any extent, so I am unsure
what the problem may be, but SDNetContol is stating a Network
Error to the SDConnect. It is all connected via CAT6 and no WiFi.
It is best practice to remove the batteries form the SDConnect
when not changing firmware or leave them in there? I have
quality rechargeable batteries I use and typically leave them in
when changing firmware, but I have left them in for a longer
period. When I removed the first set, the batteries clearly
leaked but didn’t appear to damage the SDConnect and
I throughly cleaned it and it has worked since them.
If anyone has any suggesting regarding this
issue, it would be much appreciated.
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,
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
– replace the Config file in c:\program\mecredes-benz\config
STAR C3 Config file download