How to Set up MB SD Connect C4 WIFI

MB SD Connect C4 is an MB Multiplexer C4 Mercedes Benz diagnostic tool. Wifi / Wireless Mercedes Star Diagnosis MB SD Compact 4 Mux supports UDS chip. Many Benz MB Star Diagnostic SD Connect C4 system owners do not know how to set up / use the WIFI connection. Here the engineers at Obd2tool.com have created step-by-step instructions for connecting MB SD C4 via LAN and WLAN.

MB SD Connect C4 Mercedes Star Diagnosis Compact 4 Mux Wifi MB SD Benz C4 Multiplexer Support Firmware Update

Before we start, please make sure that:

1, The LAN driver and WLAN driver of your computer was installed well.
2, The LAN of MB Star C4 is work properly. (Use OBD cable to connect MB Star C4 and start it.
After start SDConnect C4 MUX can hear 3 beeps and the red LED will flash 3 times. Press ! 3–4 times can see WLAN IP address),
as shown below:


After confirmation we can start connect.

1. First, use green cable to connect MB SD C4 multiplexer and the computer, then use OBD cable connect MUX with the car or 12V power.
Set the LAN IP as As shown below:


After modifying IP, you can see the lower right corner of the computer screen # 21 becomes unlocked state.
That means you have already connect the mux to the computer by LAN cable.


2. Next use WLAN connect the computer and MB SD Connect C4.
First, we need add road24h in WIRELESS NETWORK CONNECTION of the computer, the password is 26 * a. Photo as below.


After setting up, then set the IP of WIRELESS into, as shown below:
Here should be noted that: the IP of computer WIRELESS must be different with the C4 MUX.


After setting the IP of WIRELESS, click # 21 (the lower right corner of the computer) into SDCONNECT TOOLKIT.


Then set the MUX as shown below, the password is 26 * a (26 digits)


After setup unplug the LAN cable, you can see a RADIO icon on the small screen of MB Star C4. This icon means the WLAN of MUX is working now.


The check all WIRELESS connection, you can see a road24h WIFI. Double click to connect, the password is 26 * a,
after connection then restart C4 mux.


Here need to noted that: sometimes can not to see road24h, please try to restart the computer and SD C4 MUX.
If still can not find road24h, please connect the LAN cable and do the above steps again.

If you want to know more about Mercedes Star Diagnostic Tools,  please click benz trouble repair.

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