[FatMama]

hi,
if simulation is not work probably because of no sim files that were copied by das to c:\programData\mercedes-benz\csd\writefile\sim.
you have to check if there are sim files in there.

if in real diagnostic, SDConnect can't diag older obd2 truck, we have to know what error code it is.
is it 9500, 9511 or what? 
it is better if you can upload the error code and also the 'self-test' sdconnect report.
in 24v, the most common error is in the process of k-line protocol process.
i forgot the process name.

Hi, thanks for your post. The error (1.3) - 3.515.2019   Error during initialization. No linkcould be established between diagnostic gateway and the control unit....