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How to repair MB Sd connect C4 Tourismo bus comm unication error

                                                                             How to repair MB Sd connect C4 Tourismo bus comm unication error

Some days ago, a friend Mike told me, him bought the MB SD C4+Dell E6420 Laptop pre-installed bundle, when he test it have the problem SD Connect C4 cannot power on when connected with Mercedes Tourismo bus, and here is the solution provided by our company engineer.

Complete MB SD Connect C4 diagnosis kit with 2016.7 BENZ software install Dell E6420 laptop
Super mb sd connect c4 with 2016.7 c4 software install E6420 laptop
Him tried 2 different mb sd connect c4 on Tourismo buses and sd connect does not power on. In the meantime those MB SD Connect C4 works normally to any other MB Truck and car.also on Tourismo have check MB Star C3 and works normally. Engineer offer some solution for this problem?you should check:
bus with OBD
pin 4 + 5
both must be connected and ground
In SDConnect “-” is 5 pin only. There is 4 contact not used in 16pin OBD connector.
“i’m getting an communication error when connecting xentry to a Mercedes tourismo.”
A Communication error has occurred when access FPS system
– turn OFF/ON BUS ground switch (our remove battery – cable). FPS1 wake up and MB Star diagnostic recognized FPS1/VIN code.
– enter the DAS ATEGO truck come and place manually and then it will work perfect
” Another problem is : “Currently the speed limit is set to 100 km/h. I’m trying to set it to higher value (with MB SD C4 DAS using modified EOL files). On the menu it tells me that I can, because there are higher values (105 km/h. 112 km/h, etc). But when I try to set the speed limit to higher than 100 km/h it doesn’t allow me to do it (can’t save the changes). When I try to set it below 100 km/h everything goes fine.”
He done the Access special settings , and it working perfect now! Have any question of MB SD connect C4 diagnostic tool with 2016.7 sd c4 software, please feel free contact .