If the system remains active despite the driver not having their hands on the wheel, the driver's inattention may increase the risk of crash.

Steering — Electric Power Assist System
Lane Departure — Lane Keep — Automatic Steering
Lane Departure — Lane Keep — Steering Assist

Summary
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.
Actions
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.

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Date Announced
DEC 19, 2018
Vehicles Affected
6,200
NHTSA Campaign #
18V910000
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