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1. Installation WIFI Card on MB SD C4
MB SD C4 diagnostic tool has been proved to be the best diagnostic and programming tool
for Mercedes car models. As a smart workshop owner, I have used it to diagnose vehicles for
more than 1 month. What’s more, it equips with WIFI, which make its function more brilliant,
especially for workshops.
And before diagnosis with WIFI function, you need to know how to install the WIFI Card in
advance. Details to install WIFI Card for MB SD C4 are described below:
1. Use screwdriver to take out the screws with red marks at the picture below
2. Take out the rubber, there is a card slot shown at picture below (Red mark 2).
3. Insert the WIFI Card into the WIFI Card Space. (Notice: make sure the right direction of the
WIFI Card)

2. 4. Ensure that you push the WIFI Card to the end and make it is well installed.
5. Cover the rubber and fix the screws to finish all the work.
With the WIFI Card, mechanics can diagnose vehicles via WIFI network. Under this condition,
they can enjoy an effortless experience using the tool without worrying the situation that they
forget to bring the USB cable.