LI54.71-P-080345

Complaint Brief (a few seconds), self-healing "driver assistance systems unavailable" messages are expected and normal due to system limitations and environmental effects. This can occur during startup of the vehicle but also during driving. No case is necessary for these. Please refer to the Owner's Manual for driver assistance system limitations and environmental effects. For "driver assistance systems unavailable" that are persistent or show on every key cycle AND Vehicle was produced prior to February 27, 2026. Cause Cause 1: In rare cases, one or more of the fault codes U05B555, U05B655, U05B755 or U05B855 (implausible data was received from the front/rear outer right/left radar sensor. The component part is not configured.) is "Active" in the N62/5 control unit. This cause mainly occurs in vehicles produced prior to September 5, 2025. Cause 2: The initial calibration of the acceleration sensor (IMU) in the N62/5 control unit was not performed/completed. There is no relevant fault code active in the N62/5 control unit. This cause mainly occurs in vehicles produced prior to February 27, 2026. Remedy Remedy 1: Navigate to N62/5 control unit via XENTRY and carry out: "Adaptations > Teach-in processes > Calibration of the N62/5 control unit (driver assistance system control unit)." If it is not possible to perform this process or the system is recognizing that all sensors are already calibrated and nothing further needs to be completed, we alternatively recommend carrying out "Calibration drive after exchange of the component part front bumper or rear bumper" under Teach-in processes. Once the calibration is started, the calibration screen will appear on the head unit. Xentry will instruct the user to disconnect the device from the vehicle and perform the driving calibration. XENTRY MUST be disconnected and cannot be left connected. Remedy 2: Navigate to N62/5 control unit via XENTRY and carry out: "Adaptations > Teach-in processes > Calibration of the N62/5 control unit (driver assistance system control unit)." If there are no identified calibrations, perform calibration drive for the N62/5 control unit. No XENTRY diagnostic device is required for this, as the calibration does not need to be initiated via XENTRY! Perform a calibration drive of at least 5 minutes and at least 20 turns (left/right evenly distributed) without interrupting the drive (stop and go is permissible, but no ignition cycling). The driving speed should be approximately 20 km/h, and the steering wheel angle about 180 degrees (ideal are 90° turns that must be driven through at more than 10 km/h). No message is displayed to indicate that the calibration has been successfully completed. After the calibration drive, the vehicle must be parked and locked for at least seven minutes to allow the vehicle bus to enter sleep mode. Once the bus sleep mode has completed, the fault messages should no longer be displayed in the driver display. Driver support systems may still not be fully available at this time. This is indicated by the ADAS system icons (see picture ADAS icons). These are available after a further driving time of approx. 10 minutes. Connect the vehicle to Mercedes me Connect. MB.Drive, Navigation, and On-Demand features REQUIRE that the vehicle is linked to a profile. Please also note the additional information regarding the connection between Mandatory Pairing (Head Unit Profile) and Pre-Delivery Inspection (PDI).