How to fix When MB Star C4 Initialization of diagnosis multiplexer failed

I have a 04 SL600 and several other vehicles in my garage, and half of the fun of owning these vehicles is in being able to perform all the maintenance with car diagnostic tools on them. I have worked on vehicles all my life, and I recently bought a MB Star C4 for the SL600, as it is just part of my hobby. It will get used regularly, well maintained and deeply loved.

Buy from Autonumen.com MB STAR C4 2015.3 for the first time?MB Star C4 Initialization of diagnosis multiplexer failed, how to fix it? Please operate by following steps.

Here are pictures of the two error messages:


I chatted with one of our technicians who later asked was he using the built-in com port on the laptop and was the disk a mobile hdd or d630 hdd?The customer said it was a mobile hdd, software was installed on a Latitude E65000 laptop, and sent me photo of the connection, as shown below:

Once saw this photo, the technician said the problem was caused because of the connection. The cable should be connected to the built-in com port on the laptop or use a PCMCIA card or use a Z-TEK USB1.1 to RS232 Convert Connector for connection.Car is no longer a special transport, and Mercedes-Benz.MB STAR C3 in the high growth, the new version comes with Mercedes-Benz continued. Therefore, the new Mercedes-Benz diagnosis should update speed, new car series. When a new version comes out, which means that C4, C3 version is dismissed. But the result was expelled, C3 is no point of view is that we should pay attention. We need to consider is why it may take longer C4 C3, C4 or C3 on what benefits. See it together.