Mercedes-benz U11a600 Jun 2026

If the steering systems perform normally and no warning messages illuminate the dashboard, the fault code can be safely ignored. Real-World Symptoms of a Genuine Malfunction

If the code is accompanied by real-world system failures, the radar unit itself may be struggling to read the road environment.

This sensor is typically positioned low in the front bumper, either behind the emblem or at the center of the lower grille. JustAnswer mercedes-benz u11a600

If you are seeing dashboard warnings like "Active Distance Assist Inoperative" alongside this code, the issue might actually be hardware-related rather than a software glitch.

: It is notably common in Model 247 (B-Class) vehicles equipped with Active Lane Keeping Assist (SA code 243). Potential Underlying Causes If the steering systems perform normally and no

The forward-facing radar module (often nested directly behind the central Mercedes-Benz grill emblem or lower bumper) operates within exceptionally tight physical tolerances. If the vehicle hits a deep pothole, suffers a minor parking-lot bump, or undergoes a front-bumper removal during service, the sensor can shift. A deviation of just horizontally or vertically will cause the control network to reject the sensor's data, resulting in a communication-type fault code. 2. CAN Bus Wiring and Voltage Instabilities Fault code U11A600 stored steering control unit - nhtsa

: The front radar is highly sensitive. If the front bumper takes a minor hit (even from parking), or if the sensor bracket bends by more than 3 degrees, the module shuts down communication. Heavy mud, ice, or thick, non-factory metallic paint over the bumper emblem can also block the signal. JustAnswer If you are seeing dashboard warnings like

: If cleaning the sensors doesn't clear the error, technicians typically use the Mercedes-Benz Star Diagnosis system to pinpoint if the issue is a software glitch or a physical hardware failure.

Technically, U11A600 is defined as "Communication with the 'radar sensor system' control unit has a malfunction". In many Mercedes models, such as the Model 247 (B-Class/GLB) , this code is frequently found residing in the N68 steering control unit

Dirt, mud, ice, or heavy rain blocking the sensor's "view".