Mercedes-Benz USA, LLC. (Mercedes) is recalling certain 2018 S450 4MATIC, S560 4MATIC Coupe, S63 AMG 4MATIC Coupe, Maybach S560 4MATIC, S560 4MATIC, S63 AMG and S63 AMG 4MATIC Cabrio vehicles. The Hands-off-Detection system may malfunction, causing the Active Steering Assist system to remain engaged despite the driver's hands not being on the steering wheel for a prolonged period of time.
Mercedes has notified owners, and dealers will update the software of the steering control unit, free of charge. An interim letter was mailed to owners on February 14, 2019 to notify them of the issue. A second notification will be sent when the remedy is available. Owners may contact Mercedes customer service at 1-800-367-6372.