Mercedes Xentry Diagnosis & Programming

Mercedes-Benz Xentry (formerly known as Star Diagnosis) is the manufacturer-native diagnostic and programming platform for all Mercedes-Benz passenger cars, AMG models, and Sprinter commercial vans. It replaces the older Star Diagnosis DAS system and provides full access to every control unit on Mercedes vehicles from approximately 2004 onwards. Generic OBD tools provide access to powertrain fault codes on Mercedes — Xentry provides access to everything: airbag, ESP, SAM units, COMAND, door control units, and the full programming and coding layer that generic tools cannot reach.

Xentry is required for: SCN (Software Calibration Number) coding — a mandatory Mercedes process when a control unit is replaced, which links the replacement unit to the car's VIN and prevents unauthorised parts from being fitted; manufacturer software updates applied from Mercedes' live release database; variant coding when options are changed or a control unit replacement requires feature configuration; guided symptom diagnosis using Mercedes' own fault-finding trees; and EGS (automatic gearbox) adaptation resets after transmission work.

We carry out Xentry-based work on the full Mercedes-Benz range: A-Class, B-Class, C-Class, E-Class, S-Class, GLA, GLC, GLE, GLS, CLA, CLS, SLK/SLC, SL, AMG models, and Sprinter (W906, W907). If your Mercedes has fault codes that a generic scanner cannot read or clear, or you have been told work requires Xentry access, we are equipped to carry it out at our Brierley Hill workshop.