This is the most common hardware solution discussed on MHH Auto. These cheap, widely available Volkswagen/Audi diagnostic cables use the FTDI FT232RL chip, which can mimic the K-Line communication protocol required by Eberspacher heaters. Wiring the Connection To connect a standard KKL cable to your heater harness:
For more technical details on the diagnostic capabilities of EDiTH, refer to the overview at Fleet Equipment Magazine eberspacher espar edith diagnose software mhh auto verified