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 — Steering Assist

Date Announced
DEC 19, 2018
Vehicles Affected
5,754
Mercedes-Benz Recall #
2019040025
NHTSA Campaign #
18V908000
Summary
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018 AMG S63 4MATIC coupe, AMG S63 4MATIC sedan, AMG S63 4MATIC Cabriolet, S450 4MATIC sedan, S560 4MATIC coupe, S560 4MATIC sedan, and Maybach S560 4MATIC vehicles. Due to an incorrect steering boot installation, the Active Steering Assist system may remain engaged despite the driver's hands not being on the steering wheel for a prolonged period of time.
Actions
MBUSA has notified owners, and dealers will inspect the vehicles and correct the steering boot installation, as necessary, free of charge. The recall began May 13, 2019. Owners may contact Mercedes Benz customer service at 1-800-367-6372. MBUSA's number for this recall is 2019040025.