ECUPRO was key in helping me trouble shoot my 2003 C240 Mercedes, with 170k. Luckily for me the car died in my driveway, no fault codes logged but no crank, with the cooling fan running on full high. I like this car, but didn't want to spend thousands of dollars having it towed and possibly repaired. Thought for sure the ECU had failed, but ECUPRO proved me wrong, this was a huge help in ruling out this component ,turns out the problem was the SAM had failed. Found a used one on Ebay, and I was back in business. I couldn't justify spending thousands on a car this old, and with your help there is one less Mercedes in the junkyard ! Thank you for the great job that you do ,it is much appreciated. Ron Dickinson