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Mercedes-Benz S 560 Recall 18V910: Steering assist may stay on with hands off the wheel

NHTSA campaign 18V910, reported December 19, 2018, 6,200 vehicles potentially affected.

What this recall means for you

Some Mercedes-Benz S-Class vehicles may have a fault in the Hands-off-Detection system. This can leave the Active Steering Assist system engaged for a long period even when the driver's hands are not on the steering wheel.

If the system stays active while the driver is not holding the wheel, the driver may become inattentive, which increases the risk of a crash.

The remedy is a free software update to the steering control unit performed by an authorized Mercedes-Benz dealer. Owners can contact Mercedes-Benz customer service at 1-800-367-6372, referencing recall number 2019040024. You can also check your vehicle identification number (VIN) for open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 18V910Mercedes-Benz USA, LLC.
Component
LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING; LANE DEPARTURE: LANE KEEP: STEERING ASSIST; STEERING:ELECTRIC POWER ASSIST SYSTEM
Problem
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.
Risk
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.
Remedy
Mercedes has notified owners, and dealers will update the software of the steering control unit, free of charge. The recall began May 13, 2019. Owners may contact Mercedes customer service at 1-800-367-6372. MBUSA's number for this recall is 2019040024.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Mercedes-Benz AMG S6320182019
Mercedes-Benz S 45020182019
Mercedes-Benz S 56020182019