The U11A600 fault code in your Mercedes-Benz is a specific alert indicating your vehicle's brain (PTCU) has lost contact with its eyes (radar sensors). While the symptoms can be alarming, the issue is often solvable, sometimes as simply as a software update. However, in other cases, it may require component replacement.
When this code is active, you will likely notice one or more of the following warnings pop up on your instrument cluster: mercedes-benz u11a600
Yellow or red warning icons for ADAS systems (radar icons, steering wheel icon). The U11A600 fault code in your Mercedes-Benz is
You do not need a dealership-level scan tool, but you do need a professional-grade Mercedes scanner (like XENTRY, iCarsoft MB V2.0, Autel MaxiSys, or ThinkDiag). Generic OBD2 readers will show only P0106 (Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance). When this code is active, you will likely
For most owners, replacing the intake manifold pressure sensor and clearing the code resolves the issue permanently. However, if you have a 2012–2017 M276 or M278 engine, always start with a dealer software update—it has saved countless owners from unnecessary sensor replacements.
Clear out historical DTC codes using a Mercedes-compatible OBD2 scanner.
Take the vehicle out on a calibration drive. To teach the sensor back into the system, drive on a clear road with active traffic, maintaining a steady follow distance behind other vehicles at approximately 150 to 250 feet until the system calibration finishes.