MB Star C4 Connect Compact Description: Mercedes Benz MB Star C4 is professional OBD2 diagnostic tool with WIFI wireless function,support multi-language.MB SD Compact C4 mainly function is diagnose and program for your benz cars and trucks from 1989-2016. How to Use MB Star C4 Diagnostic Fix 2003 CL600 ESP Distronic Errors Problem description: 2003 CL600 throwing P0120 (throttle position sensor); dash display reads ESP and Distronic errors (white, not red); check engine light is intermittent, and car is in limp mode. Have replaced throttle pedal assembly, passenger coil pack (found a cracked coil), and plugs. Found oil around some of the plugs, and at 39K mi they looked like they had 139K miles on them…ugly. Also spotted a vac hose with a hole, and had a cracked nipple on the air sensor closest to the throttle body. Car also idles rough occasionally…have checked fuses and relays for all the above-named suspects…even going under rear seat on driver’s side. I’m confused because the idle makes me think the issue is mechanical in nature…but the car behaves differently when my OBDII scanner is connected. MB Star C4 Diagnostics SD Connect to use and how to do: you have to get a Xentry DAS without…