Mercedes-Benz USA is recalling 6,200 model year 2018 S450 4MATICs, S560 4MATIC Coupes, S63 AMG 4MATIC Coupes, Maybach S560 4MATICs, S560 4MATICs, S63 AMGs & S63 AMG 4MATIC Cabrios.
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.
If the system remains active despite the driver not having his hands on the wheel, the driver's inattention may increase the risk of crash.
What to do
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 owners 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.