2024 MERCEDES-BENZ E 350 4MATIC

The lane-keeping assist function (In-Lane control, part of the driver-assistance suite) does not turn off when commanded. The driver selects the control to disengage, and the system remains active and continues to apply steering input. This is a recurring condition and it is getting more frequent. A driver-assistance steering function that cannot be switched off removes driver authority over the steering at the moment the driver is trying to take control, which is a safety risk in normal driving and especially during evasive maneuvers, lane changes, and construction or debris avoidance. The condition was reported to the selling dealer in writing on June 17, 2026 as part of a recurring driver-assistance concern. During the subsequent B service visit the dealer inspected the radar sensors and applied software updates to the steering column module, steering wheel, electric power steering, and driver-assistance control units. The dealer could not duplicate the concern and did not perform a system calibration. The condition has continued after that service. The vehicle has approximately 17,428 miles. There has been no crash, no injury, and no fire. A separate recurring concern on the same vehicle: it reports its doors as unlocked when they are in fact locked, and issues a vehicle-unlocked notification while the vehicle is locked. This now occurs on a near-daily basis and was also reported to the dealer on June 17, 2026 with no diagnosis on record.